System i: Programming DDS for display files

System i
Programming
DDS for display files
Version 6 Release 1
System i
Programming
DDS for display files
Version 6 Release 1
Note
Before using this information and the product it supports, read the information in “Notices,” on
page 285.
This edition applies to version 6, release 1, modification 0 of IBM i5/OS (product number 5761-SS1) and to all
subsequent releases and modifications until otherwise indicated in new editions. This version does not run on all
reduced instruction set computer (RISC) models nor does it run on CISC models.
© Copyright International Business Machines Corporation 2001, 2008.
US Government Users Restricted Rights – Use, duplication or disclosure restricted by GSA ADP Schedule Contract
with IBM Corp.
Contents
DDS for display files . . . . . . . . . 1
PDF file for DDS for display files . . . . . . . 1
Defining a display file for DDS . . . . . . . . 1
Conventions and terminology used in the DDS
information . . . . . . . . . . . . . . 2
Positional entries for display files (positions 1
through 44) . . . . . . . . . . . . . . 3
Positional entries for display files (positions 1
through 7) . . . . . . . . . . . . . 3
Condition for display files (positions 7 through
16). . . . . . . . . . . . . . . . 3
Specifying a condition for a field or for more
than one keyword . . . . . . . . . 4
Display size condition names . . . . . . 5
Type of name or specification for display files
(position 17) . . . . . . . . . . . . 7
Reserved for display files (position 18). . . . 7
Name for display files (positions 19 through 28) 7
Reference for display files (position 29) . . . 8
Length for display files (positions 30 through
34) . . . . . . . . . . . . . . . 10
Data type and keyboard shift for display files
(position 35) . . . . . . . . . . . . 11
Keyboard types . . . . . . . . . . 11
Valid entries for display files . . . . . 13
Decimal positions for display files (positions
36 and 37) . . . . . . . . . . . . . 24
Usage for display files (position 38) . . . . 25
Location for display files (positions 39 through
44) . . . . . . . . . . . . . . . 27
Line (positions 39 through 41) . . . . . 27
Position (positions 42 through 44) . . . . 27
Beginning attribute character . . . . . 27
Ending attribute character . . . . . . 28
Overlapping fields . . . . . . . . . 28
Display length . . . . . . . . . . 29
DDS keyword entries for display files (positions 45
through 80) . . . . . . . . . . . . . . 29
ALARM (Audible Alarm) keyword for display
files . . . . . . . . . . . . . . . . 30
ALIAS (Alternative Name) keyword for display
files . . . . . . . . . . . . . . . . 30
ALTHELP (Alternative Help Key) keyword for
display files . . . . . . . . . . . . . 31
ALTNAME (Alternative Record Name) keyword
for display files . . . . . . . . . . . . 32
ALTPAGEDWN/ALTPAGEUP (Alternative Page
Down/Alternative Page Up) keyword for display
files . . . . . . . . . . . . . . . . 32
ALWGPH (Allow Graphics) keyword for display
files . . . . . . . . . . . . . . . . 34
ALWROL (Allow Roll) keyword for display files 35
ASSUME (Assume) keyword for display files . . 37
AUTO (Auto) keyword for display files . . . . 37
BLANKS (Blanks) keyword for display files . . 38
BLINK (Blink) keyword for display files . . . . 40
© Copyright IBM Corp. 2001, 2008
BLKFOLD (Blank Fold) keyword for display files 40
CAnn (Command Attention) keyword for display
files . . . . . . . . . . . . . . . . 41
CFnn (Command Function) keyword for display
files . . . . . . . . . . . . . . . . 43
CHANGE (Change) keyword for display files . . 44
CHCACCEL (Choice Accelerator Text) keyword
for display files . . . . . . . . . . . . 46
CHCAVAIL (Choice Color/Display Attribute
when Available) keyword for display files . . . 46
CHCCTL (Choice Control) keyword for display
files . . . . . . . . . . . . . . . . 49
CHCSLT (Choice Color/Display Attribute when
Selected) keyword for display files . . . . . 50
CHCUNAVAIL (Choice Color/Display Attribute
when Unavailable) keyword for display files . . 52
CHECK (Check) keyword for display files . . . 53
CHGINPDFT (Change Input Default) keyword
for display files . . . . . . . . . . . . 63
CHKMSGID (Check Message Identifier) keyword
for display files . . . . . . . . . . . . 65
CHOICE (Selection Field Choice) keyword for
display files . . . . . . . . . . . . . 66
CHRID (Character Identifier) keyword for
display files . . . . . . . . . . . . . 68
CLEAR (Clear) keyword for display files . . . 69
CLRL (Clear Line) keyword for display files . . 69
CMP (Comparison) keyword for display files . . 71
CNTFLD (Continued-Entry Field) keyword for
display files . . . . . . . . . . . . . 71
COLOR (Color) keyword for display files . . . 73
COMP (Comparison) keyword for display files
77
CSRINPONLY (Cursor Movement to
Input-Capable Positions Only) keyword for
display files . . . . . . . . . . . . . 78
CSRLOC (Cursor Location) keyword for display
files . . . . . . . . . . . . . . . . 78
DATE (Date) keyword for display files . . . . 79
DATFMT (Date Format) keyword for display files 80
DATSEP (Date Separator) keyword for display
files . . . . . . . . . . . . . . . . 82
DFT (Default) keyword for display files . . . . 83
DFTVAL (Default Value) keyword for display
files . . . . . . . . . . . . . . . . 84
DLTCHK (Delete Check) keyword for display
files . . . . . . . . . . . . . . . . 85
DLTEDT (Delete Edit) keyword for display files 85
DSPATR (Display Attribute) keyword for display
files . . . . . . . . . . . . . . . . 86
DSPMOD (Display Mode) keyword for display
files . . . . . . . . . . . . . . . . 93
DSPRL (Display Right to Left) keyword for
display files . . . . . . . . . . . . . 94
DSPSIZ (Display Size) keyword for display files 94
DUP (Duplication) keyword for display files
100
Programming for the Dup key. . . . . . 101
iii
EDTCDE (Edit Code) keyword for display files
EDTMSK (Edit Mask) keyword for display files
EDTWRD (Edit Word) keyword for display files
ENTFLDATR (Entry Field Attribute) keyword
for display files . . . . . . . . . . . .
ERASE (Erase) keyword for display files . . .
ERASEINP (Erase Input) keyword for display
files . . . . . . . . . . . . . . .
ERRMSG (Error Message) and ERRMSGID
(Error Message Identifier) keywords for display
files . . . . . . . . . . . . . . .
ERRSFL (Error Subfile) keyword for display files
FLDCSRPRG (Cursor Progression Field)
keyword for display files . . . . . . . .
FLTFIXDEC (Floating-Point to Fixed Decimal)
keyword for display files . . . . . . . .
FLTPCN (Floating-Point Precision) Keyword for
Display Files . . . . . . . . . . . .
FRCDTA (Force Data) keyword for display files
GETRETAIN (Get Retain) keyword for display
files . . . . . . . . . . . . . . .
HELP (Help) keyword for display files . . . .
HLPARA (Help Area) keyword for display files
HLPBDY (Help Boundary) keyword for display
files . . . . . . . . . . . . . . .
HLPCLR (Help Cleared) keyword for display
files . . . . . . . . . . . . . . .
HLPCMDKEY (Help Command Key) keyword
for display files. . . . . . . . . . . .
HLPDOC (Help Document) keyword for display
files . . . . . . . . . . . . . . .
HLPEXCLD (Help Excluded) keyword for
display files . . . . . . . . . . . . .
HLPFULL (Help Full) keyword for display files
HLPID (Help Identifier) keyword for display
files . . . . . . . . . . . . . . .
HLPPNLGRP (Help Panel Group) keyword for
display files . . . . . . . . . . . . .
HLPRCD (Help Record) keyword for display
files . . . . . . . . . . . . . . .
HLPRTN (Help Return) keyword for display
files . . . . . . . . . . . . . . .
HLPSCHIDX (Help Search Index) keyword for
display files . . . . . . . . . . . . .
HLPSEQ (Help Sequencing) keyword for
display files . . . . . . . . . . . . .
HLPTITLE (Help Title) keyword for display files
HOME (Home) keyword for display files . . .
HTML (Hypertext Markup Language) keyword
for display files. . . . . . . . . . . .
INDARA (Indicator Area) keyword for display
files . . . . . . . . . . . . . . .
INDTXT (Indicator Text) keyword for display
files . . . . . . . . . . . . . . .
INVITE (Invite) keyword for display files . . .
INZINP (Initialize Input) keyword for display
files . . . . . . . . . . . . . . .
ERASEINP(*ALL) keyword . . . . . . .
INZRCD (Initialize Record) keyword for display
files . . . . . . . . . . . . . . .
KEEP (Keep) keyword for display files . . . .
iv
System i: Programming DDS for display files
102
107
108
112
113
114
115
118
119
120
121
121
122
123
124
127
128
128
130
131
132
132
133
134
134
136
136
137
138
139
140
141
141
143
144
146
146
LOCK (Lock) keyword for display files . . . .
LOGINP (Log Input) keyword for display files
LOGOUT (Log Output) keyword for display
files . . . . . . . . . . . . . . .
LOWER (Lower) keyword for display files . .
MAPVAL (Map Values) keyword for display
files . . . . . . . . . . . . . . .
MDTOFF (Modified Data Tag Off) keyword for
display files . . . . . . . . . . . . .
MLTCHCFLD (Multiple-Choice Selection Field)
keyword for display files . . . . . . . .
MNUBAR (Menu Bar) keyword for display files
MNUBARCHC (Menu-Bar Choice) keyword for
display files . . . . . . . . . . . . .
MNUBARDSP (Menu-Bar Display) keyword for
display files . . . . . . . . . . . . .
MNUBARSEP (Menu-Bar Separator) keyword
for display files. . . . . . . . . . . .
MNUBARSW (Menu-Bar Switch Key) keyword
for display files. . . . . . . . . . . .
MNUCNL (Menu-Cancel Key) keyword for
display files . . . . . . . . . . . . .
MOUBTN (Mouse Buttons) keyword for display
files . . . . . . . . . . . . . . .
MSGALARM (Message Alarm) keyword for
display files . . . . . . . . . . . . .
MSGCON (Message Constant) keyword for
display files . . . . . . . . . . . . .
MSGID (Message Identifier) keyword for
display files . . . . . . . . . . . . .
MSGLOC (Message Location) keyword for
display files . . . . . . . . . . . . .
NOCCSID (No Coded Character Set Identifier)
keyword for display files . . . . . . . .
OPENPRT (Open Printer File) keyword for
display files . . . . . . . . . . . . .
OVERLAY (Overlay) keyword for display files
OVRATR (Override Attribute) keyword for
display files . . . . . . . . . . . . .
OVRDTA (Override Data) keyword for display
files . . . . . . . . . . . . . . .
PAGEDOWN/PAGEUP (Page Down/Page Up)
keywords for display files . . . . . . . .
PASSRCD (Passed Record) keyword for display
files . . . . . . . . . . . . . . .
PRINT (Print) keyword for display files . . .
PROTECT (Protect) keyword for display files
PSHBTNCHC (Push Button Field Choice)
keyword for display files . . . . . . . .
PSHBTNFLD (Push Button Field) keyword for
display files . . . . . . . . . . . . .
PULLDOWN (Pull-Down Menu) keyword for
display files . . . . . . . . . . . . .
PUTOVR (Put with Explicit Override) keyword
for display files. . . . . . . . . . . .
PUTRETAIN (Put-Retain) keyword for display
files . . . . . . . . . . . . . . .
RANGE (Range) keyword for display files . .
REF (Reference) keyword for display files . . .
REFFLD (Referenced Field) keyword for display
files . . . . . . . . . . . . . . .
147
147
148
148
149
150
150
153
154
158
159
161
162
163
166
166
167
169
171
171
172
173
174
175
176
176
178
179
181
183
184
186
187
188
189
RETKEY (Retain Function Keys) and
RETCMDKEY (Retain Command Keys)
keywords for display files . . . . . . . .
RETLCKSTS (Retain Lock Status) keyword for
display files . . . . . . . . . . . . .
RMVWDW (Remove Window) keyword for
display files . . . . . . . . . . . . .
ROLLUP/ROLLDOWN (Roll Up/Roll Down)
keywords for display files . . . . . . . .
RTNCSRLOC (Return Cursor Location)
keyword for display files . . . . . . . .
RTNDTA (Return Data) keyword for display
files . . . . . . . . . . . . . . .
SETOF (Set Off) keyword for display files . . .
SETOFF (Set Off) keyword for display files . .
SFL (Subfile) keyword for display files . . . .
SFLCHCCTL (Subfile Choice Control) keyword
for display files. . . . . . . . . . . .
SFLCLR (Subfile Clear) keyword for display
files . . . . . . . . . . . . . . .
SFLCSRPRG (Subfile Cursor Progression)
keyword for display files . . . . . . . .
SFLCSRRRN (Subfile Cursor Relative Record
Number) keyword for display files . . . . .
SFLCTL (Subfile Control) keyword for display
files . . . . . . . . . . . . . . .
SFLDLT (Subfile Delete) keyword for display
files . . . . . . . . . . . . . . .
SFLDROP (Subfile Drop) keyword for display
files . . . . . . . . . . . . . . .
SFLDSP (Subfile Display) keyword for display
files . . . . . . . . . . . . . . .
SFLDSPCTL (Subfile Display Control) keyword
for display files. . . . . . . . . . . .
SFLEND (Subfile End) keyword for display files
SFLENTER (Subfile Enter) keyword for display
files . . . . . . . . . . . . . . .
SFLFOLD (Subfile Fold) keyword for display
files . . . . . . . . . . . . . . .
SFLINZ (Subfile Initialize) keyword for display
files . . . . . . . . . . . . . . .
SFLLIN (Subfile Line) keyword for display files
SFLMLTCHC (Subfile Multiple Choice Selection
List) keyword for display files . . . . . . .
SFLMODE (Subfile Mode) keyword for display
files . . . . . . . . . . . . . . .
SFLMSG (Subfile Message) and SFLMSGID
(Subfile Message Identifier) keywords for
display files . . . . . . . . . . . . .
SFLMSGKEY (Subfile Message Key) keyword
for display files. . . . . . . . . . . .
SFLMSGRCD (Subfile Message Record)
keyword for display files . . . . . . . .
SFLNXTCHG (Subfile Next Changed) keyword
for display files. . . . . . . . . . . .
SFLPAG (Subfile Page) keyword for display files
SFLPGMQ (Subfile Program Message Queue)
keyword for display files . . . . . . . .
SFLRCDNBR (Subfile Record Number) keyword
for display files. . . . . . . . . . . .
190
191
191
192
193
195
196
197
197
198
199
200
200
201
203
203
205
205
206
209
210
211
212
213
215
217
219
220
221
222
224
226
SFLRNA (Subfile Records Not Active) keyword
for display files. . . . . . . . . . . .
SFLROLVAL (Subfile Roll Value) keyword for
display files . . . . . . . . . . . . .
SFLRTNSEL (Subfile Return Selected Choices)
keyword for display files . . . . . . . .
SFLSCROLL (Subfile Scroll) keyword for display
files . . . . . . . . . . . . . . .
SFLSIZ (Subfile Size) keyword for display files
SFLSNGCHC (Subfile Single Choice Selection
List) keyword for display files . . . . . . .
SLNO (Starting Line Number) keyword for
display files . . . . . . . . . . . . .
SNGCHCFLD (Single-Choice Selection Field)
keyword for display files . . . . . . . .
SYSNAME (System Name) keyword for display
files . . . . . . . . . . . . . . .
TEXT (Text) keyword for display files . . . .
TIME (Time) keyword for display files . . . .
TIMFMT (Time Format) keyword for display
files . . . . . . . . . . . . . . .
TIMSEP (Time Separator) keyword for display
files . . . . . . . . . . . . . . .
UNLOCK (Unlock) keyword for display files
USER (User) keyword for display files . . . .
USRDFN (User-Defined) keyword for display
files . . . . . . . . . . . . . . .
USRDSPMGT (User Display Management)
keyword for display files . . . . . . . .
USRRSTDSP (User Restore Display) keyword
for display files. . . . . . . . . . . .
VALNUM (Validate Numeric) keyword for
display files . . . . . . . . . . . . .
VALUES (Values) keyword for display files . .
VLDCMDKEY (Valid Command Key) keyword
for display files. . . . . . . . . . . .
WDWBORDER (Window Border) keyword for
display files . . . . . . . . . . . . .
WDWTITLE (Window Title) keyword for
display files . . . . . . . . . . . . .
WINDOW (Window) keyword for display files
WRDWRAP (Word Wrap) keyword for display
files . . . . . . . . . . . . . . .
DDS for 3270 remote attachment . . . . . . .
System/36 environment considerations for display
files . . . . . . . . . . . . . . . .
Keyword considerations for display files used in
the System/36 environment . . . . . . .
ALTNAME (Alternative Record Name)
keyword . . . . . . . . . . . . .
CHANGE record-level keyword . . . . .
HELP and HLPRTN keyword . . . . . .
MSGID keyword . . . . . . . . . .
PRINT(*PGM) keyword . . . . . . . .
RETKEY (Retain Function Keys) and
RETCMDKEY (Retain Command Keys)
keywords. . . . . . . . . . . . .
RETKEY keyword . . . . . . . . .
RETCMDKEY keyword . . . . . . .
Considerations for specifying RETKEY
and RETCMDKEY keywords . . . . .
Contents
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241
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243
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246
246
247
247
248
250
252
255
259
260
261
261
262
262
262
263
264
264
265
265
265
v
USRDSPMGT (User Display Management)
keyword . . . . . . . . . . . .
Unicode considerations for display files . . .
Positional entry considerations for display files
that use Unicode data . . . . . . . .
Keyword considerations for display files that
use Unicode data (positions 45 through 80) .
CCSID (Coded Character Set Identifier)
keyword . . . . . . . . . . . .
Double-byte character set considerations for DDS
Positional entry considerations for display files
that use DBCS . . . . . . . . . . .
Length (positions 30 through 34) . . . .
Data type (position 35) . . . . . . .
Decimal positions (positions 36 and 37). .
Keyword considerations for display files that
use DBCS . . . . . . . . . . . .
vi
System i: Programming DDS for display files
. 266
. 266
. 267
. 268
. 268
270
.
.
.
.
270
270
270
271
. 271
CNTFLD (Continued-Entry Field) keyword
GRDATR (Grid Attribute) keyword . . . .
GRDBOX (Grid Box) keyword . . . . . .
GRDCLR (Grid Clear) keyword . . . . .
GRDLIN (Grid Line) keyword . . . . . .
GRDRCD (Grid Record) keyword . . . .
IGCALTTYP (Alternative Data Type)
keyword . . . . . . . . . . . . .
IGCCNV (DBCS Conversion) keyword . . .
Additional considerations for describing display
files that contain DBCS data . . . . . . .
272
273
274
277
278
280
281
282
283
Appendix. Notices . . . . . . . . . 285
Programming interface information .
Trademarks . . . . . . . . .
Terms and conditions. . . . . .
.
.
.
.
.
.
.
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.
.
.
.
. 286
. 287
. 287
DDS for display files
You can use data description specifications (DDS) to define display files. This topic collection provides
the information you need to code the positional and keyword entries that define these display files.
This information is only a quick reference for display file coding. For detailed information and examples
about DDS for display files, see the Application Display Programming book
you are just getting started with DDS for display files.
. This book is helpful if
Note: By using the code examples, you agree to the terms of the “Code license and disclaimer
information” on page 284.
PDF file for DDS for display files
You can view and print a PDF file of this information.
To view or download the PDF version of this document, select DDS for display files (about 3413 KB).
Saving PDF files
To save a PDF on your workstation for viewing or printing:
1. Right-click the PDF link in your browser.
2. Click the option that saves the PDF locally.
3. Navigate to the directory in which you want to save the PDF.
4. Click Save.
Downloading Adobe Reader
You need Adobe® Reader installed on your system to view or print these PDFs. You can download a free
copy from the Adobe Web site (www.adobe.com/products/acrobat/readstep.html)
.
Defining a display file for DDS
When you specify positional entries for display files, you need to follow some specific rules for filling in
positions 1 through 44 of the data description specifications (DDS) form.
v Specify the entries in the following order to define a display file:
1. File-level entries
2. Record-level entries
3. Help-level entries
4. Field-level entries
v Specify at least one record format in the file.
The maximum number of record formats in a display file is 1024. The maximum number of fields in
any one record format is 32 763. The maximum number of fields that can be displayed per record is
4095. The maximum combined length of all named fields and indicators in a record format is 32 763
bytes, regardless of the usage (I, O, B, M, H, P). For more information, see “Usage for display files
(position 38)” on page 25. Also, see the Application Display Programming book
number of input-capable fields.
© Copyright IBM Corp. 2001, 2008
for the maximum
1
Note: Specify the file name through the Create Display File (CRTDSPF) command, not through DDS.
Results
You can find an explanation of file-level, record-level, help-level, and field-level entries as well as syntax
rules for specifying DDS keywords in Rules for DDS keywords and parameter values.
The following figure shows a display file example.
|...+....1....+....2....+....3....+....4....+....5....+....6....+....7....+....8
00100A* DISPLAY FILE EXAMPLE
00101A*
00102A
REF(PAYROLL)
00103A
R MENU
00104A
H
HLPARA(1 1 12 80)
00105A
HLPRCD(RECORD1 FILEA)
00106A N01
00107AO 02
FLDA
20I 2O 2 2DSPATR(HI)
00108A
FLDB
22N 2B 3 2
00109A 72 73
00110AO 60 61 62
00111AA 63
DSPATR(HI)
00112A
FLDC
7Y 0B 7 20DSPATR(RI PC)
00113A 42 43
00114AO 60 61
00115AO 62
9 2'Constant'
00116A
FLDD
R
11 2
Figure 1. Display file example
Related reference
“DDS keyword entries for display files (positions 45 through 80)” on page 29
You type the keyword entries that define display files in positions 45 through 80 (functions).
“Keyword considerations for display files used in the System/36 environment” on page 261
You cannot specify some keywords in display files that contain the USRDSPMGT keyword.
Related information
Example: DDS for each file type
Conventions and terminology used in the DDS information
DDS information uses these conventions and terminology.
v A keyword is a name that identifies a function.
v A parameter is an argument shown between the parentheses on a keyword that identifies a value or set
of values you can use to tailor the function the keyword specifies.
v A value is an actual value that you can use for a parameter.
v In the keyword descriptions, this field or this record format means the field or record format you are
defining.
v The expression use this file- or record-level keyword means the keyword is valid only at the file or record
level.
v To specify a keyword means to code the keyword in the DDS for a file. This contrasts with to select a
keyword or when a keyword is in effect, which both mean that any conditioning (such as one or more
option indicators) is satisfied when an application program issues an input or output operation.
v Current source or source you are defining means the DDS that together make up the description of one
file.
v In sample displays, character fields are shown as Xs and numeric fields are shown as Ns.
v The 5250 Workstation Feature is a feature of the OS/2® communications manager that allows the
personal computer to perform like a 5250 display station and use functions of i5/OS®.
2
System i: Programming DDS for display files
v Logical file includes join logical files, simple logical files, and multiple-format logical files.
v Page means to move information up or down on the display. Roll means the same as page. Paging keys
are the same as roll keys. The PAGEDOWN keyword is the same as the ROLLUP keyword. The
PAGEUP keyword is the same as the ROLLDOWN keyword.
Positional entries for display files (positions 1 through 44)
You specify positional entries in the first 44 positions of the data description specifications (DDS) form for
display files.
Related reference
“DDS keyword entries for display files (positions 45 through 80)” on page 29
You type the keyword entries that define display files in positions 45 through 80 (functions).
Positional entries for display files (positions 1 through 7)
You can specify the sequence number, the form type, and comments in positions 1 through 7.
Sequence number for display files (positions 1 through 5)
Use these positions to specify a sequence number for each line on the form.
The sequence number is optional and is for documentation purposes only.
Form type for display files (position 6)
You can type an A in this position to designate this as a DDS form.
The form type is optional and is for documentation purposes only.
Comment for display files (position 7)
You can type an asterisk (*) in this position to identify this as a comment.
Use positions 8 through 80 for comment text. A blank line (no characters specified in positions 7 through
80) is also treated as a comment. Comments can appear anywhere in DDS and are kept only in the source
file. Comments are printed on the source computer printout but are not printed on the expanded source
computer printout.
Condition for display files (positions 7 through 16)
Positions 7 through 16 are a multiple-field area in which you can specify option indicators.
Option indicators are 2-digit numbers from 01 to 99. Your program can set option indicators on (hex F1)
or off (hex F0) to select a field or keyword. You can use option indicators to select fields to display
different data on different output operations instead of defining a different record format for each
combination of fields.
A condition is a grouping by AND of two through nine indicators that must all be in effect before the
field or keyword is selected. An AND condition is set off if N is specified and it is set on if N is not
specified. You can specify a maximum of nine indicators for each condition and nine conditions for each
field or keyword. Therefore, a maximum of 81 indicators can be specified for each field or keyword. An
AND condition occurs when you specify a condition that requires more than one indicator must be on or
off before the condition is satisfied. You can join the first indicator with the second, and the third, and so
on, by AND to form a condition. These indicators must all be in effect before the condition is satisfied
and the field or the keyword is selected. You must specify the field or the keyword on the same line as
the last (or only) set of indicators specified.
DDS for display files
3
You can also specify several conditions for a field or keyword such that if any one of them is satisfied,
the field or the keyword is selected. This is called an OR relationship. You can join the first condition
with the second condition, and the third condition, and so on, by OR to form an OR relationship.
Conditions within the OR relationship can consist of just one indicator or of several indicators joined by
AND. Indicators can be joined by AND to form a condition. Conditions can be joined by OR to give your
program several ways to select the field or keyword.
Position 7 (AND)
If you need more than three indicators to form an AND condition, specify the indicators on the
next line or lines. You can specify an A in position 7 on the second or following lines to continue
the AND condition, or you can leave it blank because A is the default.
Position 7 (OR)
If you specify several conditions that are to be joined by OR, each condition must start on a new
line and each condition, except the first, must have an O in position 7. An O specified for the first
condition produces a warning message, and that position is assumed to be blank.
Position 8, 11, 14 (NOT)
If you want an indicator to be off instead of on to satisfy a condition, specify an N in the position
just preceding the indicator (position 8, 11, or 14).
Related reference
“DSPSIZ (Display Size) keyword for display files” on page 94
You use this file-level keyword to specify the display size to which your program can open the
display file.
Specifying a condition for a field or for more than one keyword:
If you specify a condition for a field, the field name (or the constant) and the last (or the only) indicator
must be on the same line.
If you do not select the field for an output operation, no keywords specified for that field are in effect,
regardless of how the condition for the keywords is specified. For example, in the following figure, FLDA
is selected if either indicator 01 is off or indicator 02 is on. If FLDA is not selected, any keyword
associated with that field, such as DSPATR(HI), is ignored.
|...+....1....+....2....+....3....+....4....+....5....+....6....+....7....+....8
00100A* DISPLAY FILE EXAMPLE
00101A*
00102A
REF(PAYROLL)
00103A
R MENU
00104A
H
HLPARA(1 1 12 80)
00105A
HLPRCD(RECORD1 FILEA)
00106A N01
00107AO 02
FLDA
20I 2O 2 2DSPATR(HI)
00108A
FLDB
22N 2B 3 2
00109A 72 73
00110AO 60 61 62
00111AA 63
DSPATR(HI)
00112A
FLDC
7Y 0B 7 20DSPATR(RI PC)
00113A 42 43
00114AO 60 61
00115AO 62
9 2'Constant'
00116A
FLDD
R
11 2
Figure 2. Display file coding example
If you want to specify a condition for one or more keywords, the last (or only) indicator must appear on
the same line as the keywords. If the condition applies to keywords on more than one line, you must use
keyword continuation for the indicators to apply to all keywords. You can use a plus (+) or a minus (–)
sign as a continuation character. For more information about keyword continuation, see Rules for DDS
keywords and parameter values.
4
System i: Programming DDS for display files
Display size condition names:
If you want your program to open this file to display devices with display sizes other than 24 lines x 80
characters, specify the DSPSIZ (Display Size) keyword at the file level. You can then specify a condition
for the use of keywords and the location of fields with the display size condition names specified for the
DSPSIZ keyword.
If you do not specify the DSPSIZ keyword, your program can only open this file to display devices with
a 24 x 80 display.
The following table shows the display size condition name for each display device.
Device
Display size
Display size condition
name (see Note)
3179
3180
3196
3197
3476
3487
3488
3486
5251
5291
5292
24 x 80 characters (1920
characters)
*DS3
27 x 132 characters (3564
characters)
*DS4
(Models C1 and C2)
(Models HA, HC, HG, and HW)
(depending on the monitor that is attached to the display device)
(Models BA and BG)
(Models 11 and 12)
3180
3197 (Models D1, D2, W1, and W2)
3477 (Models FA, FC, FD, and FG)
3487 (Models HA, HC, HG, and HW)
Note: You can specify a user-defined display size condition name instead of *DS3 or *DS4. See “DSPSIZ (Display Size) keyword for display files” on
page 94 for an explanation of how to specify user-defined condition names.
Figure 3 shows how to specify the DSPSIZ keyword and display size condition names.
|...+....1....+....2....+....3....+....4....+....5....+....6....+....7....+....8
A
1
2
00010A
DSPSIZ(27 132 *LARGE 24 80 *NORMAL)
00020A
R RECORDA
00030A
FIELDA
10 0
1 2
00040A
FIELDB
10 0
1120
00050A *NORMAL
1 49
00060A
FIELDC
10 0 27 1
00070A *NORMAL
15 1
A
Figure 3. Specifying the DSPSIZ keyword and display size condition names
In Figure 3, the display size condition name for the primary display size is defined as *LARGE 1 (column
52 to 64). The display size condition name for the secondary display size is defined as *NORMAL 2
(column 66 to 75). FIELDA appears on line 1, position 2 for both display sizes. FIELDB appears on line 1,
position 120 for the primary display size (*LARGE by default), and on line 1, position 49 for the
secondary display size (*NORMAL specified in positions 9 through 16). FIELDC appears on line 27,
position 1 for the primary display size, and on line 15, position 1 for the secondary display size. Only
secondary display sizes (in this example, *NORMAL) can be used to specify a condition for field
locations.
Use display size condition names similar to the way you use option indicators, except that display size
condition names do not appear in your program and do not appear in the output record. A display size
condition is on if the display file is opened to the corresponding display size. When you use display size
condition names, the following rules apply:
v Specify the DSPSIZ keyword to designate the primary display size and the secondary display size. If
you do not specify the DSPSIZ keyword, the default is DSPSIZ(*DS3).
DDS for display files
5
v You can specify only one display size condition name for a condition. You cannot specify AND or OR
with other display size condition names or option indicators.
v The display size condition name must start in position 9.
v The display size condition name can be user-defined. See the keyword description for DSPSIZ (Display
Size) keyword for display files for more details.
v You can specify N in position 8 to designate a NOT condition (for the primary display size).
Note: Specifying N in position 8 implies an OR relationship between the remaining display size
condition names. For example, N*DS4 implies *DS3 when *DS3 is specified as a secondary
display size on the DSPSIZ keyword.
v You must not use display size condition names that alter the line or position sequence of a field within
a record. Fields are ordered in the display file by primary locations. A severe error occurs at file
creation time if the secondary location alters this primary sequence.
For example, FLD1 and FLD2 are on the primary display. FLD1 is located on line 2, position 2 and
FLD2 on line 4, position 2. You cannot use a display size condition name to display FLD2 before FLD1
on the display (on line 1) for a secondary display size.
v When you specify the location of a field on a secondary display size, you can only specify positions 8
through 16 (condition) and 39 through 44 (location).
v If you do not specify a condition name for a keyword for which condition names are valid, the
primary condition name specified on the DSPSIZ keyword is the default.
Table 1 shows the correct and incorrect combinations of display size condition names and primary
display sizes, when both display sizes are specified on the DSPSIZ keyword and the first one specified
varies.
Table 1. Valid display size condition specifications
Display size condition name1
24 x 80 DSPSIZ(*DS3...) or
DSPSIZ(24 80...) primary display
size
27 x 132 DSPSIZ(*DS4...) or
DSPSIZ(27 132...) primary display
size
*DS3
Error2
Valid
*DS4
Valid
Error2
N*DS3
Valid
Error3
N*DS4
Error3
Valid
Notes:
1. See the DSPSIZ keyword description for user-defined names for these display size condition names.
2. The display size condition names are in error because that display size is the primary display size.
3. These display size condition names are in error because a primary and a secondary location are implied for the
same display size. A condition name specified with the NOT condition implies an OR relationship. For example,
N*DS4 implies *DS3.
Figure 4 and Figure 5 on page 7 show a display size condition for a keyword (in this case, MSGLOC,
Message Location).
|...+....1....+....2....+....3....+....4....+....5....+....6....+....7....+....8
00030A
DSPSIZ(*DS3 *DS4)
00040A *DS4
MSGLOC(26)
A
Figure 4. Display size condition (example 1)
In Figure 4, the display size condition name *DS4 is specified, so that the message line is line 26 for a 27
x 132 display and line 25 (the default) for a 24 x 80 display.
6
System i: Programming DDS for display files
|...+....1....+....2....+....3....+....4....+....5....+....6....+....7....+....8
00080A
DSPSIZ(*DS4 *DS3)
00081A
MSGLOC(26)
A
Figure 5. Display size condition (example 2)
In Figure 5, the message line is also line 26 for the 27 x 132 display and line 25 (the default) for the 24 x
80 display, even though no display size condition name is specified, because the primary display size
(*DS4) specified with the DSPSIZ keyword is the default.
Type of name or specification for display files (position 17)
You can specify a value in this position to identify the type of name in positions 19 through 28.
The valid entries for display files are:
Entry
Meaning
R
Record format name
H
Help specification
Blank Field name
The example in “Defining a display file for DDS” on page 1 shows how to code the name type.
Related concepts
“Name for display files (positions 19 through 28)”
You use these positions to specify record format names and field names.
Related reference
“HELP (Help) keyword for display files” on page 123
You use this file-level or record-level keyword to enable the Help key.
Reserved for display files (position 18)
This position does not apply to any file type. Leave this position blank unless you use it for comment
text.
Name for display files (positions 19 through 28)
You use these positions to specify record format names and field names.
The names must begin in position 19.
The example in “Defining a display file for DDS” on page 1 shows you how to specify record format
names and field names.
Record format name
When you specify R in position 17, the name specified in positions 19 through 28 is a record format
name. You can specify more than one record format for a display file, but each record format name must
be unique within that file.
Field name
When position 17 is left blank, the name you specified in positions 19 through 28 is a field name. Field
names must be unique within the record format.
DDS for display files
7
Constant fields
Constant fields are unnamed fields (positions 19 through 28 must be blank). The following rules apply to
constant fields:
v Positions 17 through 38 must be blank.
v The location of the field is required (positions 39 through 44).
v The field can be conditioned using option indicators (positions 7 through 16).
v You can specify secondary display locations using display size condition names (positions 8 through
16). Only the display size condition name and location can be specified. That is, positions 7, 17 through
38, and 45 through 80 must be blank.
v The constant itself is defined in positions 45 through 80 using one of the following entries:
– Explicit DFT keyword (specify the value within single quotation marks with the DFT keyword)
– Implicit DFT keyword (specify the value within single quotation marks without the DFT keyword)
– DATE keyword (specify no value; see the DATE keyword description)
– TIME keyword (specify no value; see the TIME keyword description)
– SYSNAME keyword (specify no value; see the SYSNAME keyword description)
– USER keyword (specify no value; see the USER keyword description)
– MSGCON keyword (specify the message description, the message file, the library name, and the
length of the message description)
How to determine the order of fields in a record format
The order of the name fields that you specify in a record format is the order in which the name fields
appear in your program when it is compiled. (Unnamed fields do not appear in your program.)
The locations of named and unnamed fields you specify in positions 39 through 44 determine the order
that the fields appear in the display. Hidden fields (H in position 38) and Program-to-System fields (P in
position 38) do not appear on the display.
Related concepts
“Location for display files (positions 39 through 44)” on page 27
You use these positions to specify the exact location on the display where each field begins.
Related reference
“Type of name or specification for display files (position 17)” on page 7
You can specify a value in this position to identify the type of name in positions 19 through 28.
Rules for DDS keywords and parameter values
Reference for display files (position 29)
You can specify R in this position to use the reference function of the i5/OS operating system. This
function copies the attributes of a previously defined, named field (called the referenced field) to the field
you are defining.
The referenced field can be previously defined in either the display file you are defining or a previously
created database file (the database file to be referred to is specified with the REF or REFFLD keyword).
The field attributes referred to are the length, data type, and decimal positions of the field, as well as the
following keywords:
v ALIAS (alternative name)
v CCSID (Coded Character Set Identifier)
v FLTPCN (floating-point precision)
v TEXT
v DATFMT
8
System i: Programming DDS for display files
v
v
v
v
DATSEP
TIMFMT
TIMSEP
Editing and validity checking keywords
If you do not specify R, you cannot use the reference function for this field and you must specify field
attributes for this field.
Position 29 must be blank at the file, record, and help levels.
If the name of the referenced field is the same as the field you are defining, you need only specify R in
position 29 (in addition to specifying the name of the field you are defining in positions 19 through 28). If
the name of the field you are defining is different from the name of the referenced field you must specify
the name of the referenced field with the REFFLD (Referenced Field) keyword.
You can specify the name of the file defining the referenced field as a parameter value with the REF
(Reference) or the REFFLD keyword.
You do not need to copy all attributes from the previously defined field to the field you are defining. To
override specific attributes of the referenced field, specify those attributes for the field you are defining as
follows:
v To override the EDTCDE (Edit Code) or EDTWRD (Edit Word) keywords, specify EDTCDE or
EDTWRD for the field you are defining. You can delete these keywords by specifying the DLTEDT
(Delete Edit) keyword for the field you are defining.
v To override the CHECK (Check), COMP (Comparison), RANGE (Range), and VALUES (Values) validity
checking keywords and the CHKMSGID (Check Message Identifier) keyword, specify any validity
checking keyword for the field you are defining. You can delete these keywords by specifying the
DLTCHK (Delete Check) keyword for the field you are defining.
When you override some specifications, others are also affected:
v If you specify keyboard shift attribute, field length, or decimal positions for the field you are defining,
neither editing nor validity checking keywords are copied from the referenced field.
v If you override the previously defined data type to character (by specifying M, A, X, or W in position
35), decimal positions are not copied. However, if you specify N, D, or I in position 35 and leave
blanks in positions 36 and 37 (decimal positions), the field you define has the decimal positions of the
referenced field. For D, the decimal positions must be zero.
v Packed decimal and binary fields are not supported for display files. Therefore, when you refer to
fields of these types, the data type assigned is zoned decimal with a keyboard shift as follows:
– If editing is in effect for the field you are defining, the keyboard shift is numeric only (Y in position
35).
– If no editing is in effect for the field you are defining, the keyboard shift is signed numeric (S in
position 35).
v When the referenced field contains the REFSHIFT (Reference Shift) keyword, the value specified for
REFSHIFT is used as the display file keyboard shift. However, if the data type specified for the new
field is not compatible with the keyboard shift specified on the REFSHIFT keyword, the keyword is not
copied to the new field.
Note: After the display file is created, you can delete or change the referenced file without affecting the
field descriptions in the display file. Delete and create the display file again to incorporate changes
made in the referenced file.
Related concepts
DDS for display files
9
“Length for display files (positions 30 through 34)”
You must specify a length for each named field unless you are copying the length from a referenced
field.
Related reference
“REF (Reference) keyword for display files” on page 188
You use this file-level keyword to specify the name of a file from which field descriptions are to be
retrieved. You can also use this keyword when you want to duplicate descriptive information from
several fields in a previously described record format.
“REFFLD (Referenced Field) keyword for display files” on page 189
You use this field-level keyword to refer to a field when the name, record format, file, or library of the
referenced field differs from its equivalent in positions 19 through 28.
Related information
When to specify REF and REFLD keywords for DDS files
Length for display files (positions 30 through 34)
You must specify a length for each named field unless you are copying the length from a referenced field.
The length is the number of bytes of data to pass to or receive from your program when I/O operations
are done for the field. This is called the program length of the field.
The length of a field when it appears on the display is called the display length. The display length is
greater than or equal to the program length. The display length of a field is determined by the keyboard
shift (specified in position 35) and other field specifications, such as decimal positions (positions 36 and
37), and editing functions.
The display length does not include beginning and ending attribute characters of a field. However, you
must consider these attribute characters when planning the display layout for field locations. Within a
record, the ending attribute character of a field can overlap the beginning attribute character of the next
field, requiring only one space between fields.
The maximum length of a character field is equal to the display size minus one. (This allows space for
the beginning attribute character.) The maximum length of a numeric (zoned decimal) field is 63
positions. The maximum length of a single-precision floating-point field is 9 digits. The maximum length
of a double-precision floating-point field is 17 digits.
You must not specify a field length for a constant field. See “DATE (Date) keyword for display files” on
page 79, “DFT (Default) keyword for display files” on page 83, “MSGCON (Message Constant) keyword
for display files” on page 166, or “TIME (Time) keyword for display files” on page 241 for information
about the lengths of constant fields.
If you specify length, it must be right-aligned. Leading zeros are optional. Figure 6 shows incorrect and
correct field length specifications.
|...+....1....+....2....+....3....+....4....+....5
00010A
FIELD1
7
A
00020A
FIELD2
7
A
00030A
FIELD3
R
+7
A
Figure 6. Incorrect and correct length specifications
Note: FIELD1 shows the field length specified incorrectly. FIELD2 and FIELD3 show the field length
specified correctly.
10
System i: Programming DDS for display files
If you use a referenced field, you can override the length of the field by specifying a new value or by
specifying the increase or decrease in length. To increase the length, specify +n, where n is the increase.
To decrease the length, specify -n, where n is the decrease. For example, an entry of +4 for a numeric
field indicates a field that is 4 digits longer than the referenced field.
In some cases, some keywords specified with the field in the database file are not included in the display
file if you specify a value for length.
A field cannot occupy the first position on the display. The first position is reserved for an attribute
character. For example, on a 24 by 80 display, an entry of 1 in positions 39 through 41 (line), and 1 in
positions 42 through 44 (position) is not allowed for a signed numeric field since the field starts in
position 1.
Related concepts
“Data type and keyboard shift for display files (position 35)”
The entry you make in position 35 is the data type and keyboard shift attribute for display files.
“Location for display files (positions 39 through 44)” on page 27
You use these positions to specify the exact location on the display where each field begins.
“Reference for display files (position 29)” on page 8
You can specify R in this position to use the reference function of the i5/OS operating system. This
function copies the attributes of a previously defined, named field (called the referenced field) to the
field you are defining.
Data type and keyboard shift for display files (position 35)
The entry you make in position 35 is the data type and keyboard shift attribute for display files.
This entry does not determine the data type of the field used in your program. The entry in positions 36
and 37 (decimal positions) determines the data type of the field.
The keyboard shift attribute automatically shifts 5250 workstations with data-entry keyboards and can,
for all keyboards, limit what the workstation user can type into a field. However, the keyboard shift
attribute does not shift 5250 workstations with the typewriter-like keyboard. Nor does the keyboard shift
attribute restrict in any way what your program can write to a field. Your program can write alphabetic
characters to a numeric field and, in most cases, read that field and receive those characters. Any
restrictions are enforced solely by the programming language used for your program.
Related concepts
“Length for display files (positions 30 through 34)” on page 10
You must specify a length for each named field unless you are copying the length from a referenced
field.
“Decimal positions for display files (positions 36 and 37)” on page 24
You use these positions to specify the decimal placement within a zoned decimal field and also to
specify the data type of the field as it appears in your program.
Keyboard types:
There are two types of keyboards on the System i® platform: a typewriter-like keyboard and a data-entry
keyboard.
Display stations can have either the typewriter-like or the data-entry keyboard.
Typewriter-like keyboard:
The typewriter-like keyboard functions in either uppershift or lowershift.
DDS for display files
11
Type the upper symbol (for the keys with two symbols) when the keyboard is in uppershift. Type the
lower symbol (for the keys with two symbols) when the keyboard is in lowershift. Type uppercase
characters for alphabetic keys (which have only one symbol) when the keyboard is in uppershift. Type
uppercase alphabetic characters when the keyboard is in lowershift, unless the Check Lowercase
(CHECK(LC)) keyword is specified. If the CHECK(LC) keyword is specified, and you place (or leave) the
keyboard in lowershift, you can type lowercase a through z characters.
Note: None of the keyboard shift attributes causes an automatic uppershift for the typewriter-like
keyboard.
The following figure shows the typewriter-like keyboard.
Data-entry keyboard:
The data-entry keyboard functions in either numeric shift (upper) or alphabetic shift (lower).
The upper symbol (for the keys with two symbols) is typed when the keyboard is in uppershift. On this
keyboard, the numbers 0 through 9 are the upper symbols on alphabetic keys. The lower symbol (for the
keys with two symbols) is typed when the keyboard is in lowershift. The alphabetic characters A through
Z are the lower symbols and are always in uppercase. The data-entry keyboard does not support
lowercase characters a through z, even if you specify CHECK(LC) keyword.
The following figure shows the data-entry keyboard.
Sys
Req
#
@
Cmd
Attn
Del
Ins
Erase
Inpt
Help
Print
Roll
+
Q
Home
Roll
Reset
Num
’
%
)
E
W
>
S
A
Z
.
<
$
*
¢
R
:
D
?
X
’
H
G
=
V
1
U
Y
T
;
F
"
C
0
/
Dup
!
B
2
I
4
J
(
N
Reset
5
K
7
M
&
P
3
O
Rec
Adv
Field
Exit
Field
-
6
L
8
,
9
.
Alpha
Enter/
Rec Adv
RSLL616-0
Note that you type the numbers 0 through 9 by using the lowershift on the typewriter-like keyboard and
by using the uppershift (numeric) on the data-entry keyboard. Therefore, when a field has one of the
numeric keyboard shift attributes (numeric shift or numeric only), the typewriter-like keyboard is in
lowershift and the data-entry keyboard is in uppershift. In both cases, you can type numeric characters
without pressing a shift key.
12
System i: Programming DDS for display files
Valid entries for display files:
These entries are valid for display files.
Entry keyboard shifts
Blank
X
A
N
S
Y
W
I
D
M
Data type (see note)
F
L
T
Z
Meaning
Default
Alphabetic only
Alphanumeric shift
Numeric shift
Signed numeric
Numeric only
Katakana (for Japan only)
Inhibit keyboard entry
Digits only
Numeric only character
Data type permitted
Floating point
Date
Time
Timestamp
Numeric
Character
Character
Character or numeric
Numeric
Numeric
Character
Character or numeric
Character or numeric
Character
Note: The data types J (only), E (either), O (open), and G (graphic) support DDS display files that use
DBCS. The G (graphic) data type also supports DDS display files that use UTF-16 and UCS-2.
The examples in “Defining a display file for DDS” on page 1 and “Date (L), Time (T), and Timestamp
(Z)” on page 19 show how to specify the keyboard shift attribute.
The keyboard shift attributes are defined in detail in the following topics.
Related concepts
“Positional entry considerations for display files that use Unicode data” on page 267
Be aware of these positional entry considerations for display files that use Unicode data. Positions not
mentioned have no special considerations for Unicode.
Related reference
“Data type (position 35)” on page 270
You can specify the data type in this position by typing J, E, O, G.
Default (blank):
If you leave position 35 blank, the entry in positions 36 and 37 (decimal positions) determines the data
type of the field.
v If you make a valid entry in positions 36 and 37, the data type is zoned decimal and the keyboard shift
attribute is signed numeric (S) unless you also specify an editing keyword. The keyboard shift attribute
is numeric only (Y) when you also specify an editing keyword.
v If you make no entry in positions 36 and 37, the data type is character and the keyboard shift attribute
is alphanumeric shift (A).
If you specify the REFSHIFT keyword for a referenced field, the specified value is used. Otherwise, a
data type of packed or binary is converted to zoned decimal in the display file. Conversion to or from
packed or binary can occur within your program.
Alphabetic only (X):
Both types of keyboards are in lowershift. Only the characters A through Z, comma (,), period (.), dash
(–), and space ( ) can be typed in.
DDS for display files
13
When you type lowercase characters a through z, uppercase characters are sent to the program. See
“CHECK (Check) keyword for display files” on page 53 for information about how to permit typing in
lowercase characters for the typewriter-like keyboard on the 5250 workstation.
Alphanumeric shift (A):
Both types of keyboards are in lowershift. All characters are valid for entry.
Numeric shift (N):
To allow numeric entry, you must use uppershift for the data-entry keyboard and lowershift for the
typewriter-like keyboard. All characters are valid for entry.
The display length for a numeric shift field is one more than the length coded in positions 30 through 34
when the following conditions occur:
v The field is an un-edited, input-capable field.
v The value in the decimal positions field is greater than zero.
The extra position in the display length is for the decimal point.
Note: Numeric-shift fields with specified decimal positions (in positions 36 and 37) are processed as
numeric-only fields by data management during input, except that editing is not supported.
Related concepts
“Numeric only (Y)” on page 15
You can only type the numbers 0 through 9, plus (+), minus (-), period (.), comma (,), and space ( )
into the field. You can press any key to leave the field.
Signed numeric (S):
You can only type the numbers 0 through 9 into the field (no blanks, no plus sign, no minus sign).
To leave the field, press the Field Exit key, the Field+ key, the Field- key, or a cursor movement key. If
you do not type any data into the field, you can press the Enter key.
You should consider the following differences when you choose between signed numeric (S) and numeric
only (Y):
v Signed numeric restricts the characters that you can type into the field to the numbers 0 through 9.
v You cannot specify S in position 35 if you also specify the EDTCDE or EDTWRD keyword.
v Numeric-only performs character removal to remove nonnumeric characters; signed numeric prevents
you from typing in these characters at all.
For input-capable fields only, the display length for the field is one more than the length specified in
positions 30 through 34. The farthest right position on the display is reserved for a minus sign.
The following considerations apply when the i5/OS operating system passes the contents of a signed
numeric field to your program:
v Your program always sees a numeric, right-aligned, zero-filled field.
v The field is displayed as a right-aligned, blank-filled field unless you specify CHECK(RZ). If you
specify CHECK(RZ), the field is displayed as right-adjusted and zero-filled.
v The i5/OS operating system does not perform decimal alignment.
v The i5/OS operating system does not remove characters from the field (as it does for numeric only
fields).
14
System i: Programming DDS for display files
When an input-capable signed numeric field displays and you do not specify CHECK(RZ), the i5/OS
operating system performs zero suppression by default (the EDTCDE and EDTWRD keywords are not
valid for signed numeric fields).
Negative numbers are handled as follows:
v On input, you must type the number and press the Field- key. The number is right-aligned in the
displayed field with a minus sign in the farthest right position. The i5/OS operating system converts
the farthest right significant digit to hex Dn where n is the significant digit, before passing the number
to your program. For example, if you type 12345 and press the Field- key, 12345- is displayed and your
program sees X’F1F2F3F4D5’.
v On output, the i5/OS operating system converts hex D in the farthest right digit to hex F. This changes
the negative number to a positive number for display purposes and displays a minus sign in the
farthest right (additional) position in the displayed field. For example, if your program sees
X’F1F2F3F4D5’, the number appears on the display as 12345-.
For examples of signed numeric fields and sample data typed into them, see the example in “Date (L),
Time (T), and Timestamp (Z)” on page 19.
Numeric only (Y):
You can only type the numbers 0 through 9, plus (+), minus (-), period (.), comma (,), and space ( ) into
the field. You can press any key to leave the field.
The display length for a numeric-only field is one more than the program length when both of the
following conditions occur (the program length is specified in positions 30 through 34):
v The field is an unedited, input-capable field.
v The value in positions 36 and 37 (decimal positions) is greater than zero.
The extra position in the display length is for the decimal point.
When the i5/OS operating system passes the contents of the field to your program, the following
considerations apply:
v Your program sees a numeric, decimally aligned field.
v To type digits to the right of the decimal, positions 36 and 37 must be greater than zero and you must
type the decimal character.
v You cannot type the maximum number of digits, a decimal character, and a sign character, because the
display length of the field equals only the program length plus one. You can press the Field+ key or
the Field- key to avoid typing a sign character.
v The i5/OS operating system removes all characters except 0 through 9 (whether typed or supplied
through the EDTWRD keyword) and the sign.
v The i5/OS operating system converts embedded blanks (hex 40) to zeros (hex F0) before decimal
alignment. (Embedded blanks are blanks between any significant digits in the field.) Leading blanks,
trailing blanks, zeros, plus signs, and minus signs are not treated as significant digits. Embedded
ampersands in an edit word are also converted to zeros before decimal alignment.
v All nonnumeric characters are removed before decimal alignment and validity checking for the
RANGE, COMP, CMP, VALUES, CHECK(VN), CHECK(M10), CHECK(M11), and CHECK(VNE)
keywords. Numeric characters (0 through 9) supplied by the EDTWRD keyword are not removed.
Validity checking for the CHECK(M10F) and CHECK(M11F) keywords is performed before the
nonnumeric characters are removed.
v The field length in the input buffer is the program length.
DDS for display files
15
When the i5/OS operating system displays a numeric-only field, the EDTCDE or the EDTWRD keyword,
if specified, applies. You can specify EDTCDE and EDTWRD only for numeric-only fields. The display
length equals the program length plus the editing characters from the specified edit code or edit word.
Negative numbers are handled as follows:
v The user can type a negative number on input in one of two ways:
– Type the digits, then a minus. The minus sign (-) appears (hex 60) on the display where it was typed
in.
– Type the digits, then press the Field- key.
If you do not specify CHECK(RZ) or CHECK(RB), a brace (}) is displayed in the farthest right
position. This causes an error message to appear at the workstation if you specify decimal positions
other than zero in positions 36 and 37. If you specify CHECK(RZ) or CHECK(RB), the digits typed
in are right-aligned. No minus sign appears in either case.
If you specify an EDTCDE keyword that displays a minus sign and you do not specify CHECK(RZ)
or CHECK(RB), a brace (}) is displayed in the farthest right position. This does not cause an error
message to appear at the workstation. A minus sign appears in the farthest right position on output.
If you specify an EDTCDE keyword that displays a minus sign and you also specify CHECK(RZ) or
CHECK(RB), the farthest right significant digit is displayed as hex Dn (negative). A minus sign
appears on the output.
When a negative number passes to your program, the i5/OS operating system converts the farthest
right significant digit from hex Fn (positive) to hex Dn (negative), where n is the significant digit.
v The sign appears in the farthest right display position on output and takes up one of the positions in
the display length.
Note: The i5/OS program examines each character of a numeric-only field to remove the nonnumeric
characters plus sign (+), minus sign (-), comma (,), and decimal point(.) and nonsignificant digits,
and to convert embedded blanks to zeros. This examination and removal can delay response time
if a significant number of fields must be processed on an input operation.
Related concepts
“Numeric shift (N)” on page 14
To allow numeric entry, you must use uppershift for the data-entry keyboard and lowershift for the
typewriter-like keyboard. All characters are valid for entry.
Related reference
“EDTCDE (Edit Code) keyword for display files” on page 102
You use this field-level keyword to edit output-capable numeric fields.
“EDTWRD (Edit Word) keyword for display files” on page 108
You use this field-level keyword to specify an edit word if you cannot obtain the editing that you
want through the EDTCDE keyword.
Katakana (W):
This field attribute designates the Japanese Katakana keyboard shift. All characters are valid for entry.
Inhibit keyboard entry (I):
A field with this keyboard shift attribute does not accept data typed in from the keyboard, and an error is
issued if you press any keys.
You can press the field advance key to position the cursor at the start of the field. This field can be used
to allow input from feature devices such as a light pen. The Field+, Field Exit, and Dup keys are valid for
a field with this attribute, and function the same as if pressed in any input field for which the Display
Attribute Protect (DSPATR(PR)) keyword is not in effect.
16
System i: Programming DDS for display files
The display length for an inhibit keyboard entry field is one position greater than the length coded in
positions 30 through 34 when the following conditions occur:
v The field is an un-edited, input-capable field.
v The value in the decimal positions field is greater than zero.
The extra position in the display length is for the decimal point.
Digits only (D):
To allow numeric entry, you must use uppershift for the data-entry keyboard and lowershift for the
typewriter-like keyboard.
The numbers-only keyboard shift defines a character or numeric field that allows you to key only the
digits 0 through 9 into the field. You cannot key special characters or blanks.
The numbers-only keyboard shift is supported only on devices that are configured on the 6040 or 6041
local controller or the 5294 or 5394 Control Unit. When a digits-only field is sent to a device that is not
configured on a valid controller type, the field is processed as alphanumeric (keyboard shift A). Because
you can type any alphanumeric character into the field, a decimal data error can result in the application
program.
The Field Exit, Field+ Exit, and Dup keys are allowed. The Field+ Exit is processed as an unsigned Field
Exit. The Field- Exit key is not allowed.
Blank and zero are the only supported values for decimal positions (DDS positions 36 and 37). If
positions 36 and 37 are blank, the field is considered a character field. If you specify zero, the field is
considered numeric.
You can only enter a positive integer value into a D field.
The display length of a digits-only field is always the field length as specified in positions 30 through 34.
Zero suppression is not supported for digits-only fields. EDTCDE and EDTWRD keywords are not valid,
and the i5/OS operating system does not perform zero suppression by default, as it does for
signed-numeric fields.
You cannot enter blanks into the field. However, you can move the cursor out of the field after entering
part of it. If you move the cursor after entering part of the field, when the i5/OS operating system passes
the contents of the field to a program, the following considerations apply:
v For a numeric field, leading blanks are converted by the i5/OS operating system to zero, and the field
is right-aligned before the programme passes the field contents to the application program.
v For a character field, blanks are passed to the application program as hex 40, and the field is not
right-aligned.
v The field length in the input buffer is the program length.
In a database file, you can specify the D keyboard shift on the REFSHIFT keyword if the field data type
is numeric or character (S, B, P, or A). For a numeric field, the number of decimal positions must be zero.
Numeric only character (M):
The M keyboard shift defines a character field that allows you to type only the digits 0 through 9, plus
(+), minus (-), comma (,), period (.), and blank into the field.
The Field Exit, Field+ Exit, Field- Exit, and Dup keys are allowed. The Field+ Exit is processed as an
unsigned Field Exit. The Field- Exit is processed as follows:
DDS for display files
17
v If you do not specify CHECK(RZ) or CHECK(RB), the farthest right position is changed to a brace.
v If you specify CHECK(RZ) or CHECK(RB), the last character you type into the field must be a digit (or
a keyboard error is issued). The farthest right digit, n, is converted from hex Fn (positive) to hex Dn
(negative).
The display length for an M field is the length coded in positions 30 through 34. You must include any
additional positions needed for a sign character or decimal point in the field length.
The field displays as a blank-filled field when you do not specify any keyword. If you specify a
CHECK(RZ) keyword, the field displays as right-aligned zero. If you specify a CHECK(RB) keyword, the
field displays as right-aligned blank filled.
When the i5/OS operating system passes the contents of the field to a program, the following
considerations apply:
v The program always sees a character field.
v The field length in the input buffer is the program length.
v The field contents are passed directly to the program. The i5/OS operating system neither converts
embedded blanks to zeros nor removes nonnumeric characters, such as sign characters and decimal
points.
In a database file, you can specify the M keyboard shift on the REFSHIFT keyword if the field data type
is character (A).
Floating point (F):
You can type any combination of characters in a floating-point field (but only the digits 0 through 9, sign
characters (+ or -), E or e, decimal point (.), and comma (,) are valid).
An error message is issued if you type any other character in a floating-point field.
A floating-point value consists of five parts:
v Significand sign
v Significand
v Exponent character
v Exponent sign
v Exponent
The following figure shows the five parts of a floating-point value.
Exponent
Exponent sign
Exponent character
Significand
Significand sign
RSLL613-0
The parts in the figure are as follows:
v Significand sign
18
System i: Programming DDS for display files
– Use + for a positive value and - for a negative value.
– On output, the significand sign is not displayed for a positive value.
– On input, the significand sign is optional. If you do not type a + or -, the significand is assumed to
be positive.
v Significand
– The digits 0 through 9 and a decimal point (.) or a comma (,) are valid.
– On output, the number of digits in the significand is determined by the length specified (positions
30 through 34). The location of the decimal point or the comma is determined by the decimal
positions you specify (positions 36 and 37).
– On input, you must type the significand. Only digits 0 through 9 are valid. The decimal point or
comma is optional. If you do not specify a decimal point, a decimal point is assumed on the right.
v Exponent character
– E or e are valid.
– On output, the exponent character always displays.
– On input, you must type an exponent character if the floating-point value includes an exponent.
v Exponent sign
– Use + for a positive value and - for a negative value.
– On output, the exponent sign always displays.
– On input, the exponent sign is optional. If you do not type a + or a -, the exponent is assumed to be
positive.
v Exponent
– The digits 0 through 9 are valid.
– On output, the exponent is always 3 digits.
– On input, you must type at least 1 digit if you type the exponent character (E or e). You can type a
maximum of 3 digits.
Notes:
1. When a floating-point value displays, embedded blanks are removed. On input, you can type
blanks before or after a floating-point value. Within a floating-point value, blanks are allowed
between the significand and the exponent character.
2. If you do not type a value in a displayed floating-point field, a positive zero is assumed.
3. A value of negative zero is valid in a floating-point field. Only the first zero to the left of the
decimal point displays. A minus sign displays to the left of the first zero.
4. A value of positive zero is valid in a floating-point field. The significand sign (+) does not
display. Only the first zero to the left of the decimal point displays.
5. You can type a fixed-point value in a floating-point field.
The display length for a floating-point field is seven positions greater than the length specified in
positions 30 through 34. The seven extra positions are for the significand sign, the decimal point or
comma, the exponent character, the exponent sign, and the three exponent digits. “Date (L), Time (T), and
Timestamp (Z)” describes how the data you type is passed to your program.
Date (L), Time (T), and Timestamp (Z):
Both types of keyboards are in lowershift. All characters are valid for entry.
The field length (DDS positions 30 and 34) for these data types are always blank. The following rules
determine the field length:
v For the date (L) data type, the format specified on the DATFMT keyword dictates the length of the
field. If you do not specify the DATFMT keyword, then the format is set to *ISO as default, which has
DDS for display files
19
a field length of 10. If you specify DATFMT(*JOB), the field length will always be 10, even if the Job
Date Format Definition Attribute displays an 8 character date.
v For the time (T) data type, the format specified on the TIMFMT keyword dictates the length of the
field. All formats for the TIMFMT keyword, including the default of *ISO, have field lengths of 8.
v For the timestamp (Z) data type, the field length is 26. The format of a timestamp field is
yyyy-mm-dd-hh.mm.ss.mmmmmm
Where yyyy = year, mm = month, dd = day, hh = hour, mm = minute, ss = second, and mmmmmm =
microsecond.
Decimal positions (DDS positions 36 and 37) support only values of period (.). Valid field usage (DDS
position 38) can be O, B, or I.
It is the responsibility of the high-level language and the application to format the date, time, and
timestamp fields correctly on output. The system does not format fields on output. Date and time fields
should be formatted according to the formats of the DATFMT and TIMFMT keywords and should use
the separators specified for the DATSEP and TIMSEP keywords. You should use the standard timestamp
format (yyy-mm-dd-hh.mm.ss.mmmmmm) for timestamp fields.
The system validates date-, time-, and timestamp-capable fields on input when the modified data tag
(MDT) for a field is set to the on position. You can turn on the MDT for a field by either typing into the
field or by specifying DSPATR(MDT) on the field. If the MDT for a field is turned off, the saved contents
of the field return to the application. When the MDT is on for a field, date and time fields are evaluated
according to the following items:
v The format specified on the DATFMT and TIMFMT keywords.
v The separators specified on the DATSEP and TIMSEP keywords.
Timestamp fields are evaluated according to the standard timestamp format (yyyy-mm-ddhh.mm.ss.mmmmmm).
You can enter date, time, and timestamp field values with or without separators. When you enter a value
without separators, leading zeros are inserted when necessary. The system includes the separators in the
data that are passed back to the application. When you enter a value with separators, leading zeros are
inserted up to the first separator when necessary. A value that is entered with separators cannot start
with a separator. Leading and trailing blanks are ignored.
You can enter timestamp field values with or without separators. The system inserts leading or trailing
zeros for timestamp fields. If you enter the field with separators, you must enter 20 digits and 6 separator
characters.
You can enter the following field level keywords with these data types:
ALIAS
CHANGE
CHGINPDFT
CHRID
COLOR
DATFMT (L)
DATSEP (L)
DFT
DFTVAL
DLTEDT
DLTCHK
DSPATR
ENTFLDATR
20
System i: Programming DDS for display files
ERRMSGID
FLDCSRPRG
INDTXT
MAPVAL
NOCCSID
OVRATR
OVRDTA
PUTRETAIN
REFFLD
SFLCSRPRG
TEXT
TIMFMT (T)
TIMSEP (T)
ERRMSG
|...+....1....+....2....+....3....+....4....+....5....+....6....+....7....+....8
00100A*
00200A* KEYBOARD SHIFT ATTRIBUTES
00300A
CHARA
5
I 2 2
00400A
CHARB
5
I 3 2CHECK(RB)
00500A
CHARC
5
I 4 2CHECK(RZ)
00600A
CHARD
5X I 4 30
00700A
CHARE
5M I 4 40
00800A
CHARF
5D I 4 50
00900A
SIGN1
5 OI 5 2
01000A
SIGN2
5 2B 5 30
01100A
NBR1
5Y OI 6 2
01200A
NBR2
5Y 2I 6 15
01300A
NBR3
5Y 2B 6 30EDTCDE(L)
01400A
NBR4
5N 2I 6 40
01500A
NBRZ
5
H
01600A
FLPT
7F 4I 7 2
01700A
DATE
L B 7 30DATFMT(*JUL) DATSEP('/')
01750A
DATE1
L B 7 40DATFMT(*MDY) DATSEP('/')
01800A
TIME
T B 8 2
01900A
TSTMP
Z I 7 30
A
Figure 7. Data type and keyboard shift coding
Three special characters are used in Table 2.
v _ means that you did not type in any character.
v X indicates a blank.
v } is represented internally as hex D0.
Except where indicated, you enter the data only by pressing a command function key. The fourth entry
under SIGN1 is an exception. You make that entry by pressing the Field Exit key.
The following table refers to fields defined in Figure 7.
Table 2. Example data type and keyboard shift coding instructions
Field name (keyboard
shift)
As typed in by the workstation user
As passed to your program
CHARA
(Alphanumeric shift)
1. _ _ _ _ _
v x x x x x (X’40’)
2. A B C _ _
v ABCxx
3. A _ C _ _
v AxCxx
4. _ _ _ D E
v xxxDE
1. _ _ _ _ _
v xxxxx
2. A B C _ _
v xxABC
3. A _ C _ _
v xxAxC
4. _ _ _ D E
v xxxDE
1. _ _ _ _ _
v 00000
2. A B C _ _
v 00ABC
3. A _ C _ _
v 00AxC
4. _ _ _ D E
v 000DE
CHARB
(Alphanumeric shift)
CHARC
(Alphanumeric shift)
DDS for display files
21
Table 2. Example data type and keyboard shift coding instructions (continued)
Field name (keyboard
shift)
As typed in by the workstation user
As passed to your program
CHARD (Alphabetic
only)
1. _ _ _ _ _
v xxxxx
2. A B C _ _
v ABCxx
3. 4 _ _ _ _
v error message
4. A B C. $ _
CHARE (Numeric only 1. _ _ _ _ _
character)
2. 516.7
CHARF (Digits only)
SIGN1 (Signed
numeric)
SIGN2 (Signed
numeric)
NBR1 (Numeric only)
NBR2 (Numeric only)
NBR3 (Numeric only)
22
v error message
v xxxxx
v 516.7
3. 5, 2 _ _
v 5, 2 x x
4. A _ _ _ _
v error message
1. _ _ _ _ _
v xxxxx
2. 2 3 _ 5 _
v 23x5x
3. 1 2 _ _ _
v 12xxx
4. A _ _ _ _
v error message
1. _ _ _ _ _ _
v 00000
2. 1 2 3 _ _ _
v 00123
3. 1 _ 3 _ _ _
v 00103
4. _ _ _ 4 5 _ (Field Exit key)
v 00045
5. _ _ _ 4 5 (Field + key)
v 00045
6. _ _ _ 4 5 _ (Field - key)
v 0 0 0 4 N(X’F0F0F0F4D5’)
7. 1 2 3 4 5 _
v 12345
1. _ _ _ _ _ _
v 00000
2. 1 2 3 4 _ _
v 01234
3. 1 2 _ _ _ _
v 00012
4. 1 2 _ _ _ _ (Field - key)
v 0 0 0 1 K (X’F0F0F0F1D2’)
1. _ _ _ _ _
v 00000
2. 0 0 0 0 5
v 00005
3. 0 0 0 5 _
v 00005
4. 0 0 2 _ _
v 00002
1. _ _ _ _ _ _
v 00000
2. 0 0 0 0 5 _
v 00500
3. 0 0 5 _ _ _
v 00500
4. 5 _ _ _ _ _
v 00500
5. 0 5 0 0 _ _
v 50000
6. 5 x 5 _ _
v 50500
7. 5 x x _ _ _
v 00500
8. 5 5 . 1 _ _
v 05510
9. 5 0 0 0 0 . _
v error message (use of decimal
10. 5 0. 0 0 0
v error message not valid)
11. 5 5 – _ _ _
v 0550}
12. 5 _ – – _ _
v 0050}
13. 5 _ + _ – _
Input processing is the same as for
NBR2.
v 0050}
System i: Programming DDS for display files
Table 2. Example data type and keyboard shift coding instructions (continued)
Field name (keyboard
shift)
As typed in by the workstation user
As passed to your program
NBR4 (Numeric shift)
1. _ _ _ _ _ _
v 00000
2. 5 – _ _ _ _
v 0050}
3. _ 5 _ – _ _
v 0050}
4. 5 _ + _ _ _
v 00500
5. 5 _ A B C _
v 00500
6. 5 _ K K _ _
v 5 0 2 0 } See note.
7. 5 _ K A K _
v 5 0 2 0 } See note.
8. 5 _ K K A _
v 0 0 5 0 0 See note.
v 1003
NBRZ (Hidden field)
9. 1 0 E + 0 3
This is a hidden field and does not
appear on the display.
FLPT (Floating point)
1. _ _ _ _ _ _ _ _ _ _ _ _ _ _
v +0
2. – 9 9 . 2 _ _ _ _ _ _ _ _ _
v –99.2
3. – 9 9 E 0 2 _ _ _ _ _ _ _ _
v –9900.
4. + 9 9 9 . 9 9 9 9 E + 0 0 3
v +999999.9
5. A B C _ _ _ _ _ _ _ _ _ _ _
v error message
6. _ _9 9 0 _ e _ _ _ _ _ _ _
v error message
1. _ _ _ _ _ _
v 40/001
2. 0 0 0 0 1 _
v 00/001
3. _ _ 1 _ _ _
v 00/001
4. 0 0 / 0 0 1
v 00/001
5. _ 0 / 0 0 1
v 00/001
6. / 0 0 1 _ _
v error message
7. 0 0 — 0 0 1
v error message
8. A _ _ _ _ _
v error message
DATE (Date)
DATE1 (Date)
1. _ _ _ _ _ _ _ _
v 01/01/40
2. 0 6 0 2 9 7 _ _
v 06/02/97
3. 6 0 2 9 7 _ _ _
v 06/02/97
4. 0 6 / 0 2 / 9 7
v 06/02/97
5. _ 6 / 2 / 9 7 _
v 06/02/97
6. 0 6 — 0 2 — 9 7
v error message
7. 6 / 9 7 _ _ _ _
v error message
8. 6 / / 9 7 _ _ _
v error message
9. 1 3 / 2 / 9 7 _
v error message
10. 6 / 3 1 / 9 7 _
v error message
11. A / 2 / 9 7 _ _
v error message
DDS for display files
23
Table 2. Example data type and keyboard shift coding instructions (continued)
Field name (keyboard
shift)
TIME (Time)
TSTMP (Timestamp)
As typed in by the workstation user
As passed to your program
1. _ _ _ _ _ _ _ _
v 00.00.00
2. 1 2 3 4 5 6 _ _
v 12.34.56
3. _ _ 1 2 3 4 5 6
v 12.34.56
4. 1 2 _ _ _ _ _ _
v 12.00.00
5. 1 2 3 4 _ _ _ _
v 12.34.00
6. 1 2 . 3 4 . 5 6
v 12.34.56
7. 1 . 2 . 3 _ _ _
v 01.02.03
8. 0 1 : 0 0 : 0 0
v error message
9. 1 2 3 _ _ _ _ _
v error message
10. 1 2 3 4 5 _ _ _
v error message
11. 1 . 0 0 0 0 _ _
v error message
1. 2000–01–01–01.00.00.000000
v 2000–01–01–01.00.00.000000
2. 20000101010000000000______
v 2000–01–01–01.00.00.000000
3. 2000/01/01/01.00.00.000000
v error message
4. 0000–00–00–00.00.00.000000
v error message
Note: The internal representation of K is hex D2. All nonnumeric characters (including those with hex D in the zone
portion) are deleted with no place value. For example, 5_KAK_ becomes 5020}.
Decimal positions for display files (positions 36 and 37)
You use these positions to specify the decimal placement within a zoned decimal field and also to specify
the data type of the field as it appears in your program.
If you leave these positions blank, the i5/OS operating system assigns a data type of character for the
field. If you type in a number in these positions, the i5/OS operating system assigns a data type of zoned
decimal for the field. The number you specify is the number of positions to the right of the decimal
point. The entry must be less than or equal to the field length, with a maximum of 63 positions.
Packed decimal and binary fields are not supported for display files. Therefore, when you refer to fields
of these types using the reference function, the data type assigned is zoned decimal with a keyboard shift
as follows:
v If editing is in effect for the field you are defining, the keyboard shift is numeric only (Y in position
35).
v If no editing is in effect for the field you are defining, the keyboard shift is signed numeric (S in
position 35).
If you are using a referenced field, you can override or change these positions. Specify the new value to
override decimal positions. To change decimal positions, specify the amount you want the field increased
or decreased and precede that number with either a plus (+) or minus (-) sign. For example, an entry of
+4 indicates four more digits to the right of the decimal point than in the referenced field.
The example in “Date (L), Time (T), and Timestamp (Z)” on page 19 shows how to specify the decimal
positions field.
Related concepts
“Data type and keyboard shift for display files (position 35)” on page 11
The entry you make in position 35 is the data type and keyboard shift attribute for display files.
24
System i: Programming DDS for display files
Usage for display files (position 38)
You use this position to specify that a named field is an output-only, input-only, input/output (both),
hidden, program-to-system, or message field.
Make no entry in this position for a constant (unnamed) field.
The valid entries for display files are:
Entry
Meaning
Blank or O
Output only
Output-only fields pass data from a program to the device when the program writes a record to a
display. You can use the DFT (Default) keyword to specify an initial value for a named output
field if you also specify the OVRDTA keyword for the field. If the OVRDTA keyword is not in
effect, the initial value for the field is used. If the OVRDTA keyword is in effect, the data for the
field is used and the data is taken from the output buffer.
I
Input only
Input-only fields pass data from the device to a program when the program reads a record. Input
fields can be initialized with a default value (specified on the DFT keyword). If you do not
change the field and the field is selected for input, the default value is passed to the program.
Input fields are, by default, underlined on the display. You can use the Change Input Default
(CHGINPDFT) keyword or the Display Attribute Underline (DSPATR(UL)) keyword to prevent
underlining.
B
Input/output (both)
Input/output fields are passed from a program when the program writes a record to the display,
and are passed to a program when the program reads a record from the display and the field is
selected for input. Input/output fields are typically used when the program displays data that
you can change. An initial value can be specified for the field on the DFT keyword. When DFT is
specified, the OVRDTA keyword is also required and indicates whether the data displayed in the
field is taken from the output buffer (OVRDTA in effect) or from the DFT keyword (OVRDTA not
in effect). Input/output fields are, by default, underlined on the display.
H
Hidden (special input/output field)
A hidden field is a named, numeric, alphanumeric, date. time, or timestamp field that does not
appear on the display. Your program can send data to the field with an output operation, and it
can retrieve data from the field with an input operation, but you cannot see or change the
contents of the field.
The following rules apply to hidden fields:
v Hidden fields are always named.
v Locations are not valid for hidden fields.
v Specify length, data type, and decimal positions as you do for other named fields.
v You can specify more than one hidden field for a display file.
Since hidden fields are not displayed, they are not considered input-capable or output-capable
fields, even though your program can send and receive data from them.
The DATFMT and DATSEP keywords can be used on a date hidden field, and the TIMFMT and
TIMSEP keywords can be used on a time hidden field. However, no formatting is done by the
system when the record containing the hidden date or time field is written or read.
DDS for display files
25
Hidden fields are useful in applications involving subfiles. For example, a subfile record can
contain record key information in a hidden field. You cannot see the hidden field, but the field is
returned to the program with the subfile record so that the program can return the record to the
database.
M
Message (special output field)
A message field is a named, output-only, character field.
The following rules apply to message fields:
v You can use option indicators to select message fields, but during processing, only one message
can be displayed at a time. The message from the first message field selected is displayed, and
all others are ignored for that operation.
v When a message field displays, all other fields you specify for that record are processed in the
normal manner. The device goes into an error condition (locked keyboard, blinking cursor, and
message displayed with the high intensity (HI) display attribute). When you press the Reset
key, normal processing continues.
v The text of the message is established when your program moves a value to the message field.
v The location of the message on the display is the message line (the last line on the display
unless the MSGLOC keyword is in effect).
v The length you specify for the message field should be less than 79 positions for 24 x 80
workstations, or less than 131 positions for the 27 x 132 workstation. Any message text that
occupies more than 78 positions on the 24 x 80 workstations, or more than 130 positions on a
27 x 132 workstation is truncated to fit the message line.
v The Help key is not supported for message fields. Message help for the message is not
displayed when Help is pressed.
v Only the following keywords are valid for a message field:
ALIAS
INDTXT
OVRDTA
REFFLD
TEXT
v You cannot specify M in position 38 for a field if the field is part of the subfile record format.
Note: It is valid to send an input operation to a record that contains no input-capable fields. This
permits pressing a function key as a response to an output record.
P
Program-to-system (special output field)
A program-to-system field is a named, numeric, or alphanumeric output-only field that is used to
pass data between the program and the system. The field does not appear on the display. Your
program can send data to the field with an output operation, but the workstation user cannot see
the contents of the field. Because program-to-system fields are not displayed, they are not
considered output-capable fields, even though the program can send data to them.
The following rules apply to program-to-system fields in display files:
v
v
v
v
26
Program-to-system fields are always named.
Locations are not valid for program-to-system fields.
Specify length, data-type, and decimal positions as you do for other named fields.
The program-to-system field must be specified as a parameter on a CHCACCEL, CHCCTL,
CHKMSGID, CHOICE, ERRMSGID, GRDATR, GRDBOX, GRDCLR, GRDLIN, HTML,
MNUBARCHC, MSGID, PSHBTNCHC, SFLCHCCTL, SFLMSGID, SFLSIZ, WDWTITLE, or
WINDOW keyword within the same record format. The P-usage field is not valid as a
parameter on any other keyword. A severe error is sent if the field is not specified on at least
one of these keywords.
System i: Programming DDS for display files
v Unlike the P-usage fields in ICF files, P-usage fields in display files can appear anywhere in the
buffer. In ICF files, P-fields must be specified after all the data fields (B-usage fields).
v A P-usage field can be specified as the message-identifier, message-file, or library name on a
MSGID keyword, provided the field is defined with the proper attributes, such as length.
v The record containing the P-usage field must be written before the data contained within the
P-usage field is known to the system.
The only keywords allowed on a program-to-system field are:
ALIAS
INDTXT
TEXT
REFFLD
Notes:
1. Input-only and input/output fields are input-capable fields.
2. Output-only and input/output fields are output-capable fields.
3. Output-only is the default if you leave the position blank.
Location for display files (positions 39 through 44)
You use these positions to specify the exact location on the display where each field begins.
You cannot specify a location for hidden, program-to-system, or message fields. The validity of the
location is based on the DSPSIZ keyword and the display size condition names.
Related concepts
“Name for display files (positions 19 through 28)” on page 7
You use these positions to specify record format names and field names.
“Length for display files (positions 30 through 34)” on page 10
You must specify a length for each named field unless you are copying the length from a referenced
field.
Related reference
“DSPSIZ (Display Size) keyword for display files” on page 94
You use this file-level keyword to specify the display size to which your program can open the
display file.
Line (positions 39 through 41):
You use these positions to specify the line on which the field begins.
The entry must be right-aligned. Leading zeros are optional. The maximum number of lines is 24 or 27.
See the table in “Display size condition names” on page 5 for more information.
Position (positions 42 through 44):
You use these positions to specify the starting position of the field within the line you specified.
Your entry must be right-aligned. Leading zeros are optional. The maximum position is 132 for the 3180
device and 80 for all of the remaining display devices.
For fields other than the first field within the record, you can specify the location by specifying a plus
value (+n) for positions 42 through 44. The plus value indicates the number of spaces to be left between
the end of the previous field and the start of the field you are defining. The plus value must be in the
range of 1 through 99. (A plus value of zero is not valid.)
Beginning attribute character:
DDS for display files
27
Each field displayed has one attribute character that defines the display attribute of the field on the
display.
This attribute character is not displayed, but occupies one position on the display immediately preceding
the field. Because of the beginning attribute character, you cannot specify that a field is to begin in the
first position of the display (line 1, position 1), unless the SLNO (Starting Line Number) keyword is
specified and the start line number is greater than 1.
When a field begins in position 1 the beginning attribute character occupies the last position of the
preceding line. If such a field is the first field of a record, the preceding line is a part of the record area
and displayed as a blank line. Any record format using that line cannot be displayed at the same time as
the other record. The last one to be displayed causes the other one to be deleted (unless CLRL(*NO) is
specified for the last displayed record).
Ending attribute character:
The end of a field on the display is indicated by an ending attribute character, unless there is only one
space between that field and the next field.
In that case, the beginning attribute character of the second field serves as the ending attribute character
of the first field. In any case, there must always be at least one space left between fields in a record.
When the last position occupied by a field of a record is the last position in a line, the ending attribute
character for the field is in position 1 of the next line. However, the next line is not considered part of the
first record, and records can be displayed on both lines at once.
Overlapping fields:
Within a record format, you can define fields to overlap portions of other fields or their attribute
characters; however, only one of those fields is shown on the display at a time.
At run time, when processing overlapping fields within a record, the i5/OS program looks at the fields in
line and position sequence. When the i5/OS operating system finds a field whose conditioning is satisfied
or that does not have an option indicator specified, it selects that field for display and ignores the
remaining overlapping fields. The first overlapping field that does not have an option indicator specified
always stops the search, and any subsequent overlapping fields are never displayed. In the following
example, if indicator 01 is set on, FIELD1 is the only field displayed. If indicator 01 is off and indicator 02
is on, FIELD2 is the only field displayed. FIELD3 is displayed when neither of the others is selected.
Figure 8 shows how to define overlapping fields.
|...+....1....+....2....+....3....+....4....+....5....+....6....+....7....+....8
00010A 01
FIELD1
10
1 5TEXT('ONE')
00020A 02
FIELD2
5
1 5TEXT('TWO')
00030A
FIELD3
2 0
1 5TEXT('THREE')
A
Figure 8. Specifying overlapping fields
If used incorrectly, this capability can result in problems in user and program communication. In the
following example, only one input field (FIELD4) is specified for the record, and according to the field
location specification, this field overlaps a preceding output field. The workstation user is not able to type
in any data because FIELD1 is always the field selected for display. The other three fields, including
FIELD4, are never displayed.
Figure 9 on page 29 shows an example of incorrect field specification entry.
28
System i: Programming DDS for display files
|...+....1....+....2....+....3....+....4....+....5....+....6....+....7....+....8
00010A
FIELD1
10
1 5TEXT('ONE')
00020A 21
FIELD2
5
1 5TEXT('TWO')
00030A 12
FIELD3
2 0
1 5TEXT('THREE')
00040A
FIELD4
5Y 2I 1 5TEXT('FOUR')
A
Figure 9. Incorrect field specification
Display length:
The display length is increased for certain types of fields and must be considered when laying out the
display.
The display length is increased by the i5/OS operating system in the following situations:
v For numeric-only fields with editing, the display length is determined from the edit word or the
program length and the edit code.
v For input-capable signed numeric fields, the display length is one more than the program length.
v The display length is one more than the program length for numeric shift fields and for numeric-only
fields without editing when these fields are input-capable and have decimal positions greater than
zero.
v The display length for floating-point fields is 7 more than the length specified in positions 30 through
34. The 7 extra positions are for the significand sign, the decimal point or comma, the exponent
character, the exponent sign, and the 3 exponent digits.
For an unsigned numeric field (like FIELD4 in Figure 1) with a nonzero decimal position, the system
requires a decimal character to be typed into the field when decimal values are typed in as data. In
Figure 2, 123 in FIELD4 does not require a decimal character, but 1234 does (123.4). For this field, the
display length is 6.
|...+....1....+....2....+....3....+....4....+....5....+....6....+....7....+....8
00010A
FIELD1
10
1 5TEXT('ONE')
00020A 21
FIELD2
5
1 5TEXT('TWO')
00030A 12
FIELD3
2 0
1 5TEXT('THREE')
00040A
FIELD4
5Y 2I 1 5TEXT('FOUR')
A
Figure 10. Incorrect field specification
|...+....1....+....2....+....3....+....4....+....5....+....6....+....7....+....8
00010A 01
FIELD1
10
1 5TEXT('ONE')
00020A 02
FIELD2
5
1 5TEXT('TWO')
00030A
FIELD3
2 0
1 5TEXT('THREE')
A
Figure 11. Specifying overlapping fields
DDS keyword entries for display files (positions 45 through 80)
You type the keyword entries that define display files in positions 45 through 80 (functions).
Related concepts
“Positional entries for display files (positions 1 through 44)” on page 3
You specify positional entries in the first 44 positions of the data description specifications (DDS) form
for display files.
Related tasks
“Defining a display file for DDS” on page 1
When you specify positional entries for display files, you need to follow some specific rules for filling
in positions 1 through 44 of the data description specifications (DDS) form.
DDS for display files
29
Related reference
“Keyword considerations for display files that use DBCS” on page 271
Some DDS keywords should be avoided in double-byte character set (DBCS) data fields, and others
should be used with caution.
Related information
Rules for DDS keywords and parameter values
ALARM (Audible Alarm) keyword for display files
You use this record-level keyword to specify that the i5/OS operating system is to activate the audible
alarm when this record is displayed. The alarm is of short duration.
This keyword has no parameters.
If the Error Message (ERRMSG) or Error Message Identifier (ERRMSGID) keyword is in effect, the
ALARM keyword has no effect, even if also selected.
To sound the audible alarm when an active ERRMSG or ERRMSGID keyword is on the record, see
“MSGALARM (Message Alarm) keyword for display files” on page 166.
Option indicators are valid for this keyword.
Example
The following example shows how to specify the ALARM keyword.
|...+....1....+....2....+....3....+....4....+....5....+....6....+....7....+....8
00005A
R CUST
00010A 01
ALARM
A
ALIAS (Alternative Name) keyword for display files
You use this field-level keyword to specify an alternative name for a field.
When the program is compiled, the alternative name is brought into the program instead of the DDS
field name. The high-level language compiler in use determines if the ALIAS name is used. Read the
appropriate high-level language reference manual for information about ALIAS support for that language.
The format of the keyword is:
ALIAS(alternative-name)
The alternative-name must be different from all other alternative names and from all DDS field names in
the record format. If a duplicate name is found, an error appears on the field name or alternative name.
An alternative name cannot be used within DDS or any other i5/OS function (for example, as a key field
name, as the field name specified for the REFFLD keyword, or as a field name used in the Copy File
(CPYF) command).
When you refer to a field that has the ALIAS keyword, the ALIAS keyword is copied in unless the
ALIAS keyword is explicitly specified on the referencing field.
Option indicators are not valid for this keyword.
Example
The following example shows how to specify the ALIAS keyword.
30
System i: Programming DDS for display files
|...+....1....+....2....+....3....+....4....+....5....+....6....+....7....+....8
00070A
FIELDA
25A
1 2ALIAS(CUSTOMERNAME)
A
The alternative name for FIELDA is CUSTOMERNAME.
Related information
DDS naming conventions
ALTHELP (Alternative Help Key) keyword for display files
You use this file-level keyword to assign a command attention (CA) key as an alternative Help key.
When either the Help key or the CA key is pressed, the help function is called.
The format of the keyword is:
ALTHELP[(CAnn)]
The valid values for the optional parameter are CA01 through CA24. If the parameter is not specified,
CA01 is the default.
The HELP keyword must also be specified, either at the file level or on at least one record in the file.
ALTHELP applies only to records for which the HELP keyword also applies. If HELP is specified at the
file level, it applies to all records in the file; thus, ALTHELP also applies to all records in the file. If HELP
is specified at the record level, ALTHELP applies only to those records that have the HELP keyword
specified.
If you specify a response indicator on the HELP keyword, the response indicator is set on and control is
returned to your program when either the Help key or the CAnn key is pressed.
If you specify option indicators on the HELP keyword, the same option indicators apply to the ALTHELP
keyword. That is, both the Help key and the CAnn key are active when the indicator condition is true.
The following keywords cannot be specified in a file with an ALTHELP keyword that has no parameter
(CA01 default):
ALTPAGEDWN(CF01)
ALTPAGEUP(CF01)
CA01
CF01
MNUCNL(CA01)
MNUBARSW(CA01)
MOUBTN(...CF01)
PSHBTNCHC(...CF01)
SFLDROP(CA01)
SFLDROP(CF01)
SFLENTER(CA01)
SFLENTER(CF01)
SFLFOLD(CA01)
SFLFOLD(CF01)
Similarly, the following keywords cannot be specified in a file with ALTHELP(CAnn) (where nn is the
same number):
ALTPAGEDWN(CFnn)
ALTPAGEUP(CFnn)
CAnn
CFnn
MNUCNL(CAnn)
MNUBARSW(CAnn)
MOUBTN(...CFnn)
PSHBTNCHC(...CFnn)
SFLDROP(CAnn)
SFLDROP(CFnn)
SFLENTER(CAnn)
SFLENTER(CFnn)
SFLFOLD(CAnn)
SFLFOLD(CFnn)
You cannot specify RETKEY or RETCMDKEY in a file with the ALTHELP keyword.
DDS for display files
31
Option indicators are not valid for this keyword.
Example
The following example shows how to specify the ALTHELP keyword.
|...+....1....+....2....+....3....+....4....+....5....+....6....+....7....+....8
A
ALTHELP
A
HELP(01 'HELP KEY PRESSED')
A
R RECORD
A
FIELD1
20A
5 5
A
The CA01 key is an alternative Help key. If the user presses the CA01 key or the Help key, response
indicator 01 is set on and control returns to the application program.
Related reference
“HELP (Help) keyword for display files” on page 123
You use this file-level or record-level keyword to enable the Help key.
ALTNAME (Alternative Record Name) keyword for display files
You use this record-level keyword to specify an alternative name for a record.
The alternative name can be specified for I/O operations when using program-described files. The syntax
of the alternative record name must be valid for the high-level language compiler in use.
The format of the keyword is:
ALTNAME('alternative-name')
See “System/36 environment considerations for display files” on page 261 for information about how to
specify the ALTNAME keyword.
ALTPAGEDWN/ALTPAGEUP (Alternative Page Down/Alternative Page
Up) keyword for display files
You use these file-level keywords to assign command function (CF) keys as alternative Page Down/Page
Up keys.
When either the Page keys or the CF keys are pressed, the page function is called. The alternative Page
Down and Page Up keys function only on the displays defined in the file with the ALTPAGEDWN or
ALTPAGEUP keyword. They do not function on system displays, such as message help.
The format for each of these keywords is:
ALTPAGEDWN[(CFnn)]
ALTPAGEUP[(CFnn)]
The valid values for the optional parameters are CF01 through CF24. If the parameter is not specified,
CF08 is the default for ALTPAGEDWN and CF07 is the default for ALTPAGEUP.
The PAGEDOWN/PAGEUP keyword should also be specified if you want your program to handle any
situation where the user has pressed a Page key or the alternative CFnn key and the i5/OS program
cannot move the text lines on the display. If you do not specify the PAGEDOWN/PAGEUP keyword, a
message indicating the key is not valid is displayed when either a Page key or the alternative CFnn key
is pressed and the i5/OS operating system cannot move the text lines on the display.
Note: Throughout this keyword description, PAGEDOWN means the PAGEDOWN or the ROLLUP
keyword. PAGEUP means the PAGEUP or the ROLLDOWN keyword.
32
System i: Programming DDS for display files
If you specify a response indicator on the PAGEDOWN or PAGEUP keyword, the response indicator is
set on and returned to your program when either the Page key or the alternative CFnn key is pressed
and the i5/OS operating system cannot move the text lines on the display.
If you specify option indicators on the PAGEDOWN or PAGEUP keyword, the same option indicators
apply to the ALTPAGEDWN or ALTPAGEUP keyword, in the order given. That is, when the indicator
condition is true, control will be returned to your program when either the Page key or the CFnn key is
pressed and the i5/OS operating system cannot move the text lines on the display.
The following keywords cannot be specified in a file with an ALTPAGEDWN keyword that has no
parameter (CF08 default):
ALTHELP(CA08)
ALTPAGEUP(CF08)
CA08
CF08
MNUCNL(CA08)
MNUBARSW(CA08)
MOUBTN(...CA08)
PSHBTNCHC(...CA08)
SFLDROP(CA08)
SFLDROP(CF08)
SFLENTER(CA08)
SFLENTER(CF08)
SFLFOLD (CA08)
SFLFOLD (CF08)
The following keywords cannot be specified in a file with an ALTPAGEUP keyword that has no
parameter (CF07 default):
ALTHELP(CA07)
ALTPAGEDWN(CF07)
CA07
CF07
MNUCNL(CA07)
MNUBARSW(CA07)
MOUBTN(...CA07)
PSHBTNCHC(...CA07)
SFLDROP(CA07)
SFLDROP(CF07)
SFLENTER(CA07)
SFLENTER(CF07)
SFLFOLD (CA07)
SFLFOLD (CF07)
Similarly, the following keywords cannot be specified in a file with ALTPAGEDWN(CFnn) or
ALTPAGEUP(CFnn) (where nn is the same number):
ALTHELP(CAnn)
CAnn
CFnn
MNUCNL(CAnn)
MNUBARSW(CAnn)
MOUBTN(...CAnn)
PSHBTNCHC(...CAnn)
SFLDROP(CAnn)
SFLDROP(CFnn)
SFLENTER(CAnn)
SFLENTER(CFnn)
SFLFOLD (CAnn)
SFLFOLD (CFnn)
Also, you cannot specify the same command function (CF) key on both the ALTPAGEDWN and the
ALTPAGEUP keywords.
You cannot specify RETKEY or RETCMDKEY in a file with the ALTPAGEDWN or ALTPAGEUP
keyword.
The ALTPAGEDWN and ALTPAGEUP keywords are allowed only in files containing a pageable area
(either a subfile or a PAGEDOWN/PAGEUP keyword).
Option indicators are not valid for these keywords.
Example
The following example shows how to specify the ALTPAGEDWN and ALTPAGEUP keywords.
DDS for display files
33
|...+....1....+....2....+....3....+....4....+....5....+....6....+....7....+....8
A
ALTPAGEUP
A
ALTPAGEDWN
A
R SUBFILE
SFL
A
FIELD1
20A
5
5
A
R CONTROL
SFLCTL(SUBFILE)
A
SFLSIZ(30)
A
SFLPAG(10)
A
SFLDSP
A
The CF07 and CF08 keys are alternative page keys. During display of the subfile, if the user presses the
CF07/CF08 key or a Page key, the i5/OS operating system pages the subfile. If the i5/OS operating
system cannot page the subfile without going beyond the end or beyond the beginning, a message is
displayed indicating the key is not valid at that time (PAGEDOWN/PAGEUP not specified).
Related reference
“PAGEDOWN/PAGEUP (Page Down/Page Up) keywords for display files” on page 175
You use these file-level or record-level keywords to specify that your program handles any situation
where the workstation user has pressed the Page Down or Page Up keys and the i5/OS operating
system cannot page through the display.
ALWGPH (Allow Graphics) keyword for display files
This file- or record-level keyword allows graphics and alphanumeric contents to be displayed by the
record format on a 5292 Model 2 Color Display Station at the same time.
The keyword is ignored if it is specified for a file displayed on any other type of display.
This keyword has no parameters.
When a record with this keyword in effect is written to a 5292 Model 2 Color Display Station, the device
is placed in graphics display mode, if it was not already in that mode. This is done whether the keyword
is in effect for any other record also displayed on the device. The device remains in graphics display
mode as long as there is any record displayed with the ALWGPH keyword selected. Displaying a record
that does not have the ALWGPH keyword will not cause graphics display mode to end.
To turn the graphics display off, you must delete all records with the ALWGPH keyword in them from
the display (or option off the keyword in those records). When the graphics display is turned off, any
graphics already on the display are not deleted, but are no longer displayed. Provided that the graphics
display is not deleted (through the use of Graphical Data Display Manager (GDDM®) functions), it will
be displayed again the next time a record with ALWGPH is displayed, including one from a secondary
interactive job called from the System Request Menu.
In the graphics display mode:
v The device is automatically placed in reduced line spacing mode, with less space between lines. This is
done regardless of the workstation user’s choice of this mode from the keyboard (in local mode), and it
cannot be overridden by the user.
v Any graphics that are already on the display when the DDS record format is displayed remain on the
display as a background to the alphanumeric characters displayed by the record format.
Option indicators are valid for this keyword.
This keyword cannot be specified with the SFL or the USRDFN keywords.
Example 1
The following example shows how to specify the ALWGPH keyword.
34
System i: Programming DDS for display files
|...+....1....+....2....+....3....+....4....+....5....+....6....+....7....+....8
00010A
R RECORD1
ALWGPH
00020A
23 2'Enter account number:'
00030A
ACCT
5
B
+2
A
In the example, RECORD1 can be displayed with graphics. The constant Enter account number: and the
field ACCT appear on the display. Any graphics also displayed (through the use of GDDM routines)
appear behind the alphanumerics. In other words, when a graphics line or pattern crosses the
alphanumerics, a portion of the graphics is covered by the alphanumerics.
Example 2
The following example shows how RECORD2 can be displayed with graphics only if option indicator 01
is on.
|...+....1....+....2....+....3....+....4....+....5....+....6....+....7....+....8
00010A
R RECORD2
00020A 01
ALWGPH
00030A
1 34'Sample Title'
A
In the example, if option indicator 01 is off, any graphics already displayed are turned off (not deleted)
and only the alphanumerics specified through DDS (such as Sample Title) appear on the display. On a
later output operation, with option indicator 01 on, the graphics reappear with the alphanumerics.
ALWROL (Allow Roll) keyword for display files
This record-level keyword enables your program to page through data in a window on the display when
the system is displaying the record format you are defining.
The window consists of display lines between and including a start line and end line defined in your
program. The number of lines to be paged through and the direction in which to page through them are
defined in your program.
This keyword has no parameters.
When your program sends an output operation to this record format, the i5/OS operating system pages
through data already in the window up or down the display and then displays the record format. Data
paged past the start line or end line is lost. After you page through, your program cannot send an input
operation to record formats that were either partially or completely within the window before the page.
To use the ALWROL function in COBOL, use the WRITE ROLLING statement.
The ALWROL keyword does not allow the display station user to page through data; it only allows your
program to page through data on the display. To allow paging of data by the display station user, specify
the ROLLUP and ROLLDOWN keywords or specify a subfile with subfile page not equal to subfile size.
To prevent deleting paging records, specify the OVERLAY keyword or the CLRL (Clear Line) keyword
with the ALWROL keyword.
Do not specify the PUTRETAIN keyword at the field level when you also specify the ALWROL keyword.
If you do so, the i5/OS operating system sends message CPF5014 when your program sends an output
operation regardless of your selection of PUTRETAIN.
If you specify the ALWROL keyword with the following keywords, you must specify option indicators
for them:
DDS for display files
35
ERRMSG
ERRMSGID
PUTOVR
PUTRETAIN (at the record-level)
Your program cannot at the same time select one of these keywords and send an output operation that
attempts to use the ALWROL function (the i5/OS operating system sends CPF5014).
The ALWROL keyword cannot be specified with any of the following keywords:
ASSUME
KEEP
SFL
SFLCTL
USRDFN
A warning message appears at file creation time if the ALWROL keyword is specified on a record with
the DSPMOD keyword. At run time, the ALWROL keyword is ignored when the display mode changes.
The ALWROL keyword cannot be specified for the record format specified by the PASSRCD keyword.
Option indicators are not valid for this keyword.
Example
The following example shows how to specify the ALWROL keyword.
|...+....1....+....2....+....3....+....4....+....5....+....6....+....7....+....8
00010A
1 R RECORD1
ALWROL OVERLAY 2
00020A
FLDA
79
I 23 2CHECK(LC)
00030A 44
3 ERRMSG('Record not found' 44)
A
1
The application program can send an output operation to RECORD1, displaying FLDA on line 23,
position 2. In a subsequent output operation, the program can page through RECORD1 (in this
case, FLDA) up or down the display or entirely off the display. A normal case is to page up one
line. The originally typed data is then displayed on line 22, and a new input field is displayed on
line 23. The display station user cannot type into the field on line 22, and the program cannot
read this field. The field on line 22 can be pushed up the display by subsequent output
operations in this way until it passes the start line of the window (as specified in the program) or
line 1 of the display.
2
The OVERLAY keyword prevents paged records from being deleted.
3
The ERRMSG keyword is shown to illustrate how ERRMSG affects the ALWROL function. The
program cannot at the same time set option indicator 44 on and send an output operation that
requests the ALWROL function. If the program does so, the i5/OS operating system sends a
notify message CPF5014.
Related reference
“SFLROLVAL (Subfile Roll Value) keyword for display files” on page 228
You use this field-level keyword in the subfile-control record format to specify that the workstation
user can type a value in this field. The value tells the i5/OS operating system how many records to
page up or down when the appropriate paging key is pressed.
“SFLRCDNBR (Subfile Record Number) keyword for display files” on page 226
You use this field-level keyword on the subfile-control record format to specify that the page of the
subfile to be displayed is the page that contains the record whose relative record number is in this
field.
36
System i: Programming DDS for display files
ASSUME (Assume) keyword for display files
This record-level keyword specifies that the i5/OS operating system is to assume that the record is
already shown on the display when the display file is opened.
Such a record can also be defined, with the KEEP keyword, in another display file. That other display file
can be closed before this file (in which you are specifying ASSUME) is opened.
This keyword has no parameters.
Specify the ASSUME keyword for at least one record format within the display file so that the i5/OS
operating system does not erase the display when the file is opened. In addition, specify the OVERLAY
keyword with the ASSUME keyword to prevent the i5/OS operating system from deleting the display
when your program sends the first output operation after opening the file.
If you use the ASSUME keyword, at least one field in the record must be able to be displayed. If more
than one record with the ASSUME keyword exists, they must occupy unique display lines.
For the i5/OS operating system to process the data correctly, your program must specify the record
format name containing this keyword.
The ASSUME keyword is not needed if the record format you are defining is in a shared file
(SHARE(*YES)) parameter specified on the Create Display File (CRTDSPF), Change Display File
(CHGDSPF), or Override with Display File (OVRDSPF) command).
This keyword cannot be specified with any of the following keywords:
ALWROL
CLRL
SFL
SLNO
USRDFN
USRDSPMGT
A warning message is issued at file creation time if the ASSUME keyword is specified on a record with
the DSPMOD keyword. At run time, the ASSUME keyword is ignored when the display mode changes.
A file with the ASSUME keyword will be opened to the display size of the file with the KEEP keyword.
Option indicators are not valid for this keyword.
Example
The following example shows how to specify the ASSUME keyword.
|...+....1....+....2....+....3....+....4....+....5....+....6....+....7....+....8
00005A
R RECORD
ASSUME
A
AUTO (Auto) keyword for display files
Under some circumstances, the AUTO keyword is equivalent to the CHECK keyword.
The AUTO keyword is equivalent to the CHECK keyword as follows:
AUTO(RA)
CHECK(ER)
AUTO(RAB)
CHECK(RB)
DDS for display files
37
AUTO(RAZ)
CHECK(RZ)
The format of the keyword is:
AUTO(RA [RAB | RAZ])
AUTO(RAB | RAZ)
The CHECK keyword is preferred.
Related reference
“CHECK (Check) keyword for display files” on page 53
You use this keyword to perform a number of functions, depending on the parameter values specified.
BLANKS (Blanks) keyword for display files
This field-level keyword, when specified for a numeric, input-capable field, enables your program to
distinguish when the field is blank and when the field is zero on the display. In either case, your program
recognizes zeros.
The BLANKS keyword sets on the specified response indicator when the field is blank on the display.
After an input operation, your program can test this indicator to determine that the field (whose program
value is zero) is actually blank on the display. The field can contain all blanks (hex 40) or all nulls (hex
00). It still appears blank to the display station user. If the indicator is off, the field is zero on the display.
This keyword is also valid for character fields, but there is generally no need to specify it for them. Your
program can test character fields directly to determine what is on the display.
See “System/36 environment considerations for display files” on page 261 for special considerations
when you specify the BLANKS keyword in files that are used in the System/36™ environment.
The format of the keyword is:
BLANKS(response-indicator ['text'])
The response indicator associated with the BLANKS keyword should be unique within the record. That
is, the same response indicator should not be used with other keywords, such as CHANGE, DUP, or
VLDCMDKEY; with any of the keywords for function keys; or with the BLANKS keyword on other fields
in the same record. This is because the i5/OS operating system always turns the response indicator off if
the field contains non-blank characters on an input operation. The i5/OS operating system does this to
make sure that when the field appears as all blanks, the response indicator is set on, and that when it
does not appear as all blanks, the response indicator is set off.
The optional text is included on the list generated at program compilation time to explain the intended
use of the indicator. This text has no function in the file or the program other than as a comment. The
single quotation marks are required. If you specify more than 50 characters between the single quotation
marks, the text is truncated to 50 characters on the program list.
Option indicators are not valid for this keyword.
Example 1: Specifying the BLANKS keyword
The following example shows how to specify the BLANKS keyword.
Note: Examples 2, 3, and 4 in this topic, show some cases that restrict the BLANKS keyword.
|...+....1....+....2....+....3....+....4....+....5....+....6....+....7....+....8
00030A
QTY1
5Y 0B 5 2BLANKS(01 'ON=QTY1 IS ALL BLANKS')
00040A
QTY2
5Y 0B 6 2BLANKS(02 'ON=QTY2 IS ALL BLANKS')
00050A
QTY3
5Y 0B 7 2BLANKS(03 'ON=QTY3 IS ALL BLANKS')
A
38
System i: Programming DDS for display files
Three numeric fields (QTY1, QTY2, and QTY3) are displayed. If the display station user types values into
the fields and presses the Enter key, the following situation occurs:
Value as typed into fields
Value as passed to program
Condition of response indicator
100
00100
Off
0
00000
Off
Blanks
00000
On
Note: If the display station user presses a Field Exit key or the Erase Input key, the field appears blank because it
contains nulls.
Restricting the BLANKS keyword
In some cases, the BLANKS keyword does not set the specified response indicator on, but rather restricts
its function. The following three examples illustrate these cases.
Note: Other cases occur when the field is a character field, but then it is unnecessary to use the BLANKS
keyword.
Example 2
In the following example, when an input/output field contains all blanks (hex 40) or all nulls (hex 00)
when displayed, and certain keywords affecting the display of the field are also specified, the response
indicator is not set on.
|...+....1....+....2....+....3....+....4....+....5....+....6....+....7....+....8
00010A* When OVRATR is specified
00020A
R REC1
PUTOVR
00030A
FLD1
10 0B 2 2BLANKS(50) OVRATR
00040A 78
DSPATR(HI)
00050A* When PUTRETAIN is specified
00060A
R REC2
PUTRETAIN OVERLAY
00070A
FLD2
10 0B 2 2BLANKS(50)
00080A
R REC3
OVERLAY
00090A
FLD3
10 0B 2 2BLANKS(50)
A
PUTRETAIN
A
For all record formats in this example, response indicator 50 is set on as expected the first time the field
is read by the program (if the field appears blank on the display). However, after a subsequent display,
response indicator 50 is set on again only if the display station user again blanks the field. If the workstation
user does not again blank the field, response indicator 50 is off.
Example 3
Examples 2 and 4 concern cases when the field is first displayed, then deleted.
In the following example, when an input-capable field is overlapped by another field, causing the first
field to be deleted, the response indicator is not set on (even though the field in the input buffer still
contains all blanks or all nulls).
|...+....1....+....2....+....3....+....4....+....5....+....6....+....7....+....8
00010A
R REC4
OVERLAY
00020A 15
FLDA
10 0B 2 2
00030A
FLD4
10 0B 2 5BLANKS(50)
A
In this example, if option indicator 15 is off when REC4 is first displayed, FLD4 is displayed and FLDA is
not. When REC4 is read, response indicator 50 is set on if FLD4 is blank. If option indicator 15 is then set
on when REC4 is displayed again, FLDA overlaps FLD4 and deletes it. Response indicator 50 is then off
when REC4 is read. (This occurs because the i5/OS operating system turns it off when displaying the
DDS for display files
39
record format and does not turn it back on for a field that is not on the display, even if the field contains
blanks or nulls from a previous I/O operation.)
Example 4
In the following example, after initial display, an input/output field is not displayed again on a
subsequent input/output operation (even though the field in the input buffer still contains all blanks or
all nulls).
|...+....1....+....2....+....3....+....4....+....5....+....6....+....7....+....8
00010A
R REC5
ERASEINP OVERLAY
00020A 20
FLD5
10 0B 2 2BLANKS(50)
00030A*
00040A
R REC6
ERASEINP OVERLAY MDTOFF
00050A 20
FLD6
10 0B 2 2BLANKS(50) DSPATR(MDT)
A
In this example, if option indicator 20 is on when REC5 or REC6 is first displayed, FLD5 or FLD6 is
displayed. When REC5 or REC6 is read, response indicator 50 is set on if FLD5 or FLD6 is blank.
However, if option indicator 20 is set off on a second display, FLD5 or FLD6 is not displayed.
BLINK (Blink) keyword for display files
You use this record-level keyword to specify that as long as the record being defined is displayed, the
cursor flashes.
The blinking is set off by the next output operation of a record that does not have the BLINK keyword
specified.
This keyword has no parameters.
Option indicators are valid for this keyword.
Example
The following example shows how to specify the BLINK keyword.
|...+....1....+....2....+....3....+....4....+....5....+....6....+....7....+....8
00020A
R MASTER
BLINK
A
BLKFOLD (Blank Fold) keyword for display files
You use this field-level keyword for named, output-only fields (but not message or program-to-system
fields) so that they overflow onto subsequent display lines.
The keyword causes folding to occur at a blank in the data rather than at the end of the display line. It is
used to make long text fields easier to read. The default is for the data to be folded at the end of the
physical line.
This keyword has no parameters.
When BLKFOLD is used, the field length is not increased. Therefore, it is possible for a portion of the
output data to be truncated.
You cannot specify the BLKFOLD keyword on a floating-point field (F in position 35).
Option indicators are not valid for this keyword.
40
System i: Programming DDS for display files
Example
The following example shows how to specify the BLKFOLD keyword.
|...+....1....+....2....+....3....+....4....+....5....+....6....+....7....+....8
00030A
FIELD1
638
2 1BLKFOLD
A
CAnn (Command Attention) keyword for display files
You use this file-level or record-level keyword to specify that the function key specified in the keyword
(CA01 through CA24) is available for use.
It is to be used as a command attention (CA) key. No input data is transmitted from the device. Response
indicators 01 through 99 are valid.
See “System/36 environment considerations for display files” on page 261 for special considerations
when you specify the CAnn keyword in files that are used in the System/36 environment.
The format of the keyword is:
CAnn[(response-indicator ['text'])]
If you specify this keyword and the display station user presses the specified function key, the following
situation happens:
v All other function key response indicators in the input buffer are set off (hex F0).
v The response indicator, if specified with the CAnn keyword, is set on (hex F1).
v The i5/OS data management feedback area is updated.
v Data already in the input buffer remains unchanged except that the response indicator (if specified) is
set on.
v Control is returned to your program.
If you specify a response indicator and the key is pressed, the response indicator is set on and returned
to your program. (The text information is associated with the indicator and is used by high-level
language compilers to help in program documentation.)
If the display station user presses a function key and you have not specified it as either a command
function (CF) key or a command attention key, the i5/OS operating system displays a message to the
display station user indicating that the key is not valid at that time.
You can use combinations of CA and CF keywords within the same display file, but you cannot specify
the same key number as both CA and CF keys. For example, CA02 and CF02 are not valid in the same
display file.
Note: File level CA and CF keys are extended to the record level. This must be considered when
assigning key numbers. For example, if CA02 is specified at file level and CF02 is specified at
record level, CF02 is an error.
If you specify a key in the range 1 through 9, you must supply the leading zero in the keyword (for
example, CA04).
Option indicators are valid for this keyword.
Validity checking
When the display station user presses a CF key, the data from fields with their MDT set on is placed into
the input buffer before validity checking is done. Any errors in the data are then detected, and the
DDS for display files
41
appropriate error messages are sent to the display. Because validity checking is not done until after the
data is placed in the input buffer, pressing a valid CA key after the CF key can cause incorrect data to be
returned to your program. This condition is not a problem as long as your program does not process the
input data when the CA key is pressed.
This condition can be prevented in either of two ways:
v Do not allow the use of CA keys. Specify CF keys, which cause validity checking to be done on the
data.
v Do not specify any of the following validity checking keywords if CA keys are allowed:
CHECK(M10)
CHECK(M11)
CHECK(VN)
CHECK(VNE)
COMP (EQ, NE, LT, NL, GT, NG, LE, GE)
RANGE
VALUES
Function keys valid for command attention keys at processing time
As a general rule, the last output operation determines which function keys are valid. However, the
following list shows exceptions to this rule:
v When an operation sends no data to the display, the validity of various function keys is not changed.
Such operations include:
– An output operation to a subfile record
v
v
v
v
v
– An update to a subfile record
– An output operation to a subfile control record that only clears, deletes, or initializes a subfile
without displaying the subfile or the subfile control record
An output operation that displays an error message by selecting ERRMSG (Error Message) or
ERRMSGID (Error Message ID) can also select a CA or CF key to be valid while the error message is
displayed.
If MNUCNL (Menu Cancel), MNUBARSW (Menu Bar Switch), or SFLDROP (Subfile Drop) is specified
for a subfile, the validity of the CA or CF key specified for the SFLDROP keyword is determined by
the last output operation. However, as long as the subfile is displayed, the CA or CF key, when valid,
acts only as a Drop key.
If SFLFOLD (Subfile Fold) is specified for a subfile, the validity of the CA or CF key specified for the
SFLFOLD keyword is determined by the last output operation. However, as long as the subfile is
displayed, the CA or CF key, when valid, acts only as a Fold key.
If two subfiles using SFLDROP or SFLFOLD are displayed at one time, the same function key should
be specified on both the SFLDROP and SFLFOLD keywords. If they are different, only the key
specified for the most recently displayed subfile is in effect. Pressing the function key affects the subfile
containing the cursor. If the cursor is not positioned in a subfile, the function key affects the upper
subfile.
If two subfiles using SFLENTER (Subfile Enter) are displayed at the same time, the only CA or CF key
in effect as an Enter key is the CA or CF key specified for the SFLENTER keyword on the most
recently displayed subfile. The cursor position at the time the Enter key is pressed determines which
subfile is affected.
Note: The following keywords function like CA keys: CLEAR, HELP, HOME, and PRINT (with response
indicator specified).
42
System i: Programming DDS for display files
Example
The following example shows how to specify the CAnn keyword.
|...+....1....+....2....+....3....+....4....+....5....+....6....+....7....+....8
00011A
CA01(91 'End of Program')
00012A
CA02(92)
00013A
CA03
A
Related concepts
“RETKEY (Retain Function Keys) and RETCMDKEY (Retain Command Keys) keywords” on page 264
You use these record-level keywords to indicate that function keys, command function (CFnn) keys, or
command attention (CAnn) keys, which are enabled on a display, should be retained when the record
you are defining is displayed.
CFnn (Command Function) keyword for display files
You use this file-level or record-level keyword to specify that the function key specified in the keyword
(CF01 through CF24) is available for use.
It is to be used as a command function (CF) key to transmit changed data as opposed to a command
attention (CA) key, which does not transmit changed data. Response indicators 01 through 99 are valid.
See “System/36 environment considerations for display files” on page 261 for special considerations
when you specify the CFnn keyword in files that are used in the System/36 environment.
The format of the keyword is:
CFnn[(response-indicator ['text'])]
If you specify this keyword, and the display station user presses the specified function key, the following
situation happens:
v
v
v
v
v
All other function key response indicators in the input buffer are set off (hex F0).
The response indicator, if specified with the CFnn keyword, is set on (hex F1).
The i5/OS data management feedback area is updated.
Data is placed in the input buffer according to data received from the device.
Control is returned to your program.
If you specify a response indicator and the key is pressed, the response indicator is set on and returned
to your program along with the input data. If no response indicator is specified, the input data is
returned to your program. (The text information is associated with the indicator and is used by high-level
language compilers to help in program documentation.)
If the display station user presses a function key and you have not specified it as either a CF key or a CA
key, the i5/OS operating system displays a message to the display station user indicating that the key is
not valid at that time.
You can use combinations of CF and CA keywords within the same display file, but you cannot specify
the same key number as both command attention and command function. For example, CA01 and CF01
are not valid in the same display file.
Note: File level CA and CF keys are extended to the record level. This must be considered when
assigning key numbers. For example, if CA02 is specified at file level and CF02 is specified at
record level, CF02 is an error.
If you specify a key in the range 1 through 9, you must supply the leading zero in the keyword (for
example, CF03).
DDS for display files
43
Option indicators are valid for this keyword.
Function keys valid for command function keys at processing time
As a general rule, the last output operation determines which function keys are valid. The following list
shows exceptions to this rule:
v When an operation sends no data to the display, the validity of the various function keys is not
changed. Such operations include:
– An output operation to a subfile record
– An update to a subfile record
– An output operation to a subfile control record that only clears, deletes, or initializes a subfile
without displaying the subfile or the subfile control record
v An output operation that displays an error message by selecting ERRMSG or ERRMSGID can also
select a CA or CF key to be valid while the error message is displayed.
v If SFLDROP is specified for a subfile, the validity of the CA or the CF key specified for the SFLDROP
keyword is determined by the last output operation. However, as long as the subfile is displayed, the
CA or CF key, when valid, acts only as a Drop key.
v If SFLFOLD is specified for a subfile, the validity of the CA or the CF key specified for the SFLFOLD
keyword is determined by the last output operation. However, as long as the subfile is displayed, the
CA or CF key, when valid, acts only as a Fold key.
v If two subfiles using SFLDROP or SFLFOLD are displayed at one time, the same function key should
be specified on both the SFLDROP and SFLFOLD keywords. If they are different, only the key
specified for the most recently displayed subfile is in effect. Pressing the function key affects the subfile
containing the cursor. If the cursor is not positioned in a subfile, the function key affects the upper
subfile.
v If two subfiles using SFLENTER are displayed at the same time, the only CA or CF key in effect as an
Enter key is the CA or CF key specified for the SFLENTER keyword on the most recently displayed
subfile. The cursor position at the time the Enter key is pressed determines which subfile is affected.
Note: The ROLLUP and ROLLDOWN keywords function like CF keys.
Example
The following example shows how to specify the CFnn keyword.
|...+....1....+....2....+....3....+....4....+....5....+....6....+....7....+....8
00010A
CF01(91 'End of Program')
00020A
CF02(92)
00030A
CF03
A
Related concepts
“RETKEY (Retain Function Keys) and RETCMDKEY (Retain Command Keys) keywords” on page 264
You use these record-level keywords to indicate that function keys, command function (CFnn) keys, or
command attention (CAnn) keys, which are enabled on a display, should be retained when the record
you are defining is displayed.
CHANGE (Change) keyword for display files
You use this record-level or field-level keyword to set on the specified response indicator for an input
operation.
This is done under the following conditions:
v The keyword is specified at the record level, and any input-capable field in the record format has its
modified data tag (MDT) set on.
44
System i: Programming DDS for display files
v The keyword is specified for an input-capable field, and that field has its changed data tag (MDT) set
on.
See “System/36 environment considerations for display files” on page 261 for information about how to
specify the CHANGE keyword in files that are used in the System/36 environment.
The format of the keyword is:
CHANGE(response-indicator ['text'])
The MDT of an input-capable field is set on when the display station user types in the field, or when
your program selects the display attribute (DSPATR(MDT)) keyword for the output operation that
displays the field. If the MDT is set on using the DSPATR(MDT) keyword, the data in the field might not
have changed even though the MDT (and hence the response indicator specified for CHANGE) is set on.
Also, note that the MDT is set on even if the workstation user types the same data in the field as was
initially displayed (such as typing into a blank field and then clearing the field).
Note: The CHANGE response indicator is not set on when a command attention key (CAnn, Help, Print,
Home, or Clear) is pressed.
When the i5/OS operating system detects validity checking errors and displays the record again with an
error message, any CHANGE keyword response indicators that have been set on by typing into fields
remain on until all validity checks succeed and the record is passed to your program.
The optional text is included on the list created at program compilation time to explain the intended use
of the indicator. This text has no function in the file or the program other than as a comment. The single
quotation marks are required. If you specify more than 50 characters between the single quotation marks,
the text is truncated to 50 characters on the program computer printout.
Option indicators are not valid for this keyword.
Example 1
The following example shows how to specify the CHANGE keyword at the field level.
|...+....1....+....2....+....3....+....4....+....5....+....6....+....7....+....8
00010A
FLDX
5
B 8 2CHANGE(67 'FLDX was changed')
A
00020A
FLDY
3
I 8 30CHANGE(68 'FLDY was entered')
A
Example 2
The following example shows how to specify the CHANGE keyword at the record level.
|...+....1....+....2....+....3....+....4....+....5....+....6....+....7....+....8
00010A
R REC1
00020A
CHANGE(88 'A field was changed')
00030A*
00040A
FIELD1
10
B 3 2
00050A
FIELD2
5
B 5 2
00060A
FIELD3
6
B 7 2
00070A
FIELD4
3
I 9 2DFT('ABC')
A
Related concepts
“CHANGE record-level keyword” on page 262
You use this record-level keyword to indicate that on an input operation, the record is to be returned
to the application program only if the user has changed the record.
DDS for display files
45
CHCACCEL (Choice Accelerator Text) keyword for display files
You use this field-level keyword on a single-choice selection field in a pull-down record to specify text for
the accelerator key.
Note: CHCACCEL only specifies the text that should describe the accelerator key. It does not enable the
function key.
The format of the keyword is:
CHCACCEL(choice-number accelerator-text)
The choice-number parameter specifies the number of the choice on the single selection field that this
keyword applies to. Valid values are 1 to 99.
The accelerator-text parameter specifies the text identifying the accelerator key. The parameter can be
specified in one of two forms:
v As a character string: ’Accelerator text’
v As a program-to-system field: &field-name
The field specified must exist in the same record as the selection field and must be defined as a character
field with usage P. This text is placed 3 spaces to the right of the maximum length of the choice text. The
maximum length of the accelerator text is determined by the length of the longest choice text. The
combination of the two must not exceed the width of the smallest display size specified for the file.
The CHCACCEL keyword is allowed only on single-choice selection fields (SNGCHCFLD keyword
specified on the same field) in pull-down records (PULLDOWN keyword specified at the record level).
Option indicators are not valid for this keyword.
Example
The following example shows how to specify the CHCACCEL keyword:
|...+....1....+....2....+....3....+....4....+....5....+....6....+....7....+....8
A
A
R PULLEDIT
CF04 CF06
A
PULLDOWN
A
F1
2Y 0B 1 2SNGCHCFLD
A
CHOICE(1 '>Undo')
A
CHOICE(2 '>Mark')
A
CHOICE(3 '>Copy')
A
CHCACCEL(1 'F4')
A
CHCACCEL(2 &F6);
A
F6
2A P
In this example, choice 1 has the accelerator key CF04 and choice 2 has the accelerator key CF06. When
the pull-down menu is displayed, the character text F4 appears to the right of the text ’Undo’, with 3
spaces in between, and the text in field F6 appears to the right of the text ’Mark’, with 3 spaces in
between. The longest choice text determines the length of all choice text. The same is true for the ACCEL
text. The ACCEL text is then started 3 spaces to the right of the longest choice.
CHCAVAIL (Choice Color/Display Attribute when Available) keyword for
display files
You use this field-level keyword to specify the color or display attributes to be used when the system is
displaying the available choices in a menu bar, push button, selection field, or subfile single-choice or
multiple-choice selection list.
46
System i: Programming DDS for display files
The format of the keyword is:
CHCAVAIL([color] [display-attributes])
One parameter must be specified.
The color parameter indicates the color of the choice text for a field on a color workstation. The choice
text can be specified on the following keywords:
v MNUBARCHC
v CHOICE
v PSHBTNCHC
The choice text can also come from the text displayed for a subfile used as a single choice or multiple
choice selection list. The parameter is specified as an expression of the form (*COLOR value).
The valid values for the color parameter are:
Value Meaning
BLU
Blue
GRN
Green
PNK
Pink
RED
Red
TRQ
Turquoise
YLW
Yellow
WHT
White
If the color parameter is not specified, the default color for the available choices in a menu bar is green.
The default color for the available choices in a selection field is green. This parameter is ignored on a
monochrome workstation.
The display-attribute parameter indicates the display attributes of the choice text specified on the
MNUBARCHC or CHOICE keyword for the field. The parameter is specified as an expression of the
form (*DSPATR value1 <value2 <value3...>>).
The valid values for the display attributes are:
Value Meaning
BL
Blink
CS
Column separator
HI
High intensity
ND
Nondisplay
RI
Reverse image
UL
Underline
The default display attribute in a menu bar is high intensity. The default display attribute in a selection
field is normal (or low) intensity.
DDS for display files
47
Note: Display attributes CS, HI, and BL can cause fields on 5292, 3179, 3197 Models C1 and C2, 3477
Model FC, 3486, 3487 Model HC, and 34881 workstations to appear as color fields. Separator lines
do not appear when display attributes HI, RI, and UL are used.
The CHCAVAIL keyword is allowed on a field only if the field has one or more PSHBTNCHC, CHOICE,
or MNUBARCHC keywords. It is also allowed on a subfile control record if the subfile control record
uses either the SFLSNGCHC or SFLMLTCHC keywords.
Option indicators are valid for this keyword.
Example 1
The following example shows how to specify the CHCAVAIL keyword. In the example, the choices in the
menu bar, if available, are displayed in yellow on a color display. For a monochrome display, the menu
bar is the default color (green) at high intensity.
|....+....1....+....2....+....3....+....4....+....5....+....6....+....7....+....8
A
A
R RECORD
MNUBAR
A
F1
2Y 0B 1 2
A
MNUBARCHC(1 PULLFILE 'File
')
A
MNUBARCHC(2 PULLEDIT 'Edit
')
A
CHCAVAIL((*COLOR YLW))
A
Example 2
In the following example, the available choices for the selection field are displayed with underlines.
|...+....1....+....2....+....3....+....4....+....5....+....6....+....7....+....8
A
A
R RECORD
A
F1
2Y 0B 2 5SNGCHCFLD CHECK(ER)
A
CHOICE(1 'Choice number 1')
A
CHOICE(2 'Choice number 2')
A
CHCCTL(1 &CHCCTL1);
A
CHCCTL(2 &CHCCTL2);
A
CHCAVAIL((*DSPATR UL))
A
Example 3
In the following example, the single choice selection list is displayed in yellow on a color display. The
available choices are also underlined.
|...+....1....+....2....+....3....+....4....+....5....+....6....+....7....+....8
A
R SFLREC
SFL
A
CTLFLD
1Y 0H
SFLCHCCTL
A
R SFLCTLRCD
SFLCTL(SFLREC)
A
SFLSNGCHC
A
:
A
:
A
CHOICE(1 'Choice number 1')
A
:
A
:
A
CHOICE(2 'Choice number 2')
A
:
A
:
A
CHCAVAIL((*DSPATR UL))
A
CHCAVAIL((*COLOR YLW))
Related reference
1. Dependent on the monitor attached to the display device.
48
System i: Programming DDS for display files
“SFLMLTCHC (Subfile Multiple Choice Selection List) keyword for display files” on page 213
You use this record-level keyword to define a subfile as a multiple-choice selection list. A
multiple-choice selection list is a scrollable group of items from which the user can select multiple items.
“COLOR (Color) keyword for display files” on page 73
You use this keyword to specify the color of a field on a color display.
CHCCTL (Choice Control) keyword for display files
You use this field-level keyword on a selection field to control the availability of the choices for the field.
The format of the keyword is either
CHCCTL(choice-number &control-field [msg-id [msg-lib/]msg-file])
or
CHCCTL(choice-number &control-field [&msg-id [&msg-lib/]&msg-file])
The choice-number parameter is required and it specifies the choice to which this keyword applies. Valid
values are 1 to 99.
The control-field parameter is required and it specifies the name of a 1-byte numeric hidden field that, on
output, contains the control value for the choice. The field must be defined within the same record as the
field you are defining, and must be defined as data type Y (numeric) with length 1, decimal positions 0,
and usage H. On input for multiple-choice selection fields, the selection field indicates whether the field
was selected.
The following table shows the control values for the hidden field, and their meaning on input and
output:
Table 3. Control values for hidden fields
Control value
Meaning on output
0
Available
1
Selected
2
Unavailable
3
(Cannot place cursor on choice unless help for choice is
available.)
Unavailable
4
(Placing cursor on choice is allowed.)
Unavailable
Meaning on input
Unselected
Selected
(Cannot place cursor on choice even if help for choice is
available.)
Note: The cursor restrictions described only apply to displays that are connected to a controller that supports an
enhanced interface for nonprogrammable workstations. If another display is used, the cursor is not restricted.
The message-id and message-file parameters are optional and specify a message to be displayed when
the user selects an unavailable choice. If these parameters are not specified, the system issues a default
message, CPD919B, when the user selects an unavailable choice. If a field is used for the message-id, that
field must exist in the record you are defining and it must be defined as data type A, usage P, and length
of 7.
The message-file parameter is a required parameter when the message-id parameter is used. If you do
not specify the library parameter, *LIBL is used to search for the message file at program run time. If a
field is used for the message library or message file, that field must exist in the record you are defining
and it must be defined as data type A, usage P, and length of 10.
DDS for display files
49
When the CHCCTL keyword is specified on a field, a CHOICE or PSHBTNCHC keyword with the same
choice number must also be specified for the field.
Option indicators are not valid for this keyword.
Example
The following example shows how to specify the CHCCTL keyword.
|...+....1....+....2....+....3....+....4....+....5....+....6....+....7....+....8
A
:
A
:
A
F1
2Y 0B 3 35SNGCHCFLD
A
CHOICE(1 '>Undo
')
A
CHOICE(2 '>Mark
')
A
CHOICE(3 '>Copy
')
A
CHCCTL(1 &CTLUNDO MSG1112 QUSER/A)
A
CHCCTL(2 &CTLMARK &MSG &LIB/&MSGF);
A
CHCCTL(3 &CTLCOPY);
A
CTLUNDO
1Y 0H
A
CTLMARK
1Y 0H
A
CTLCOPY
1Y 0H
A
MSG
7A P
A
MSGF
10A P
A
LIB
10A P
A
When using a graphical display station attached to a controller that supports an enhanced interface for
nonprogrammable workstations, the selection field looks like this:
RV2W863-1
CHCSLT (Choice Color/Display Attribute when Selected) keyword for
display files
You use this field-level keyword to specify the color or display attributes to be used when the system is
displaying a selected choice in a menu bar or selection field.
You can use this keyword to specify the color or display attributes to be used for selected choices in a
selection field, if the selection field is in a pull-down menu that has PULLDOWN (*NOSLTIND). You can
also use the CHCSLT keyword on a subfile control record, when the subfile is used as a single choice or
multiple choice selection list. The selected list item is displayed in the color indicated by the keyword on
a color display, or displayed with the attribute indicated by the keyword.
The format of the keyword is:
CHCSLT([color] [display-attributes])
One parameter must be specified.
The color parameter indicates the color of the choice text specified on the MNUBARCHC or CHOICE
keywords for the field on a color workstation. The parameter is specified as an expression of the form
(*COLOR value).
50
System i: Programming DDS for display files
The valid values for the color parameter are:
Value
BLU
GRN
PNK
RED
TRQ
YLW
WHT
Meaning
Blue
Green
Pink
Red
Turquoise
Yellow
White
If the color parameter is not specified, the default color for the selected choice in a menu bar is white.
The default color for the selected choices in a selection field in a pull-down menu that does not display
selection characters is white. The color parameter is ignored on a monochrome display.
The display-attribute parameter indicates the display attributes of the choice text specified on the
MNUBARCHC or CHOICE keywords for the field. The parameter is specified as an expression of the
form (*DSPATR value1 <value2 <value3...>>).
The valid values for the display attributes are:
Value
BL
CS
HI
ND
RI
UL
Meaning
Blink
Column separator
High intensity
Nondisplay
Reverse image
Underline
The default display attribute for the selected choice in a menu bar is normal (or low) intensity. The
default display attribute for the selected choices in a selection field in a pull-down menu that does not
display selection characters is high intensity.
Note: Display attributes CS, HI, and BL can cause fields on 5292, 3179, 3197 Models C1 and C2, 3477
Model FC, 3486, 3487 Models HC, and 3488 workstations to appear as color fields. Separator lines
do not appear when display attributes HI, RI, and UL are used.
When this keyword is specified for a field, either the MNUBARCHC keyword or the CHOICE keyword
must also be specified on the field. If the CHOICE keyword is specified on the field rather than
MNUBARCHC, the record containing this field must have the PULLDOWN keyword specified with the
value *NOSLTIND. When CHCSLT is specified for a subfile control record, either the SFLSNGCHC or
SFLMLTCHC keyword must also be specified on the subfile record.
Option indicators are valid for this keyword.
Example
The following example shows how to specify the CHCSLT keyword:
|...+....1....+....2....+....3....+....4....+....5....+....6....+....7....+....8
A
A
R RECORD
MNUBAR
A
F1
2Y 0B 1 2
2. Dependent on the monitor attached to the display device.
DDS for display files
51
A
A
A
A
MNUBARCHC(1 PULLFILE 'File
')
MNUBARCHC(2 PULLEDIT 'Edit
')
CHCSLT((*COLOR PNK) (*DSPATR RI))
In this example, when the choice is selected on a color display, the menu bar is displayed in pink reverse
image.
Related reference
“SFLMLTCHC (Subfile Multiple Choice Selection List) keyword for display files” on page 213
You use this record-level keyword to define a subfile as a multiple-choice selection list. A
multiple-choice selection list is a scrollable group of items from which the user can select multiple items.
“COLOR (Color) keyword for display files” on page 73
You use this keyword to specify the color of a field on a color display.
CHCUNAVAIL (Choice Color/Display Attribute when Unavailable)
keyword for display files
You use this field-level keyword to specify the color or display attributes to be used when the system
displays the unavailable choices in a selection field or a push button field.
This keyword can also be used to indicate unavailable choices in a subfile single or multiple choice
selection list.
The format of the keyword is:
CHCUNAVAIL([color] [display-attributes])
One parameter must be specified.
The color parameter indicates the color of choice text specified on the CHOICE keywords for the field on
a color display station, when the choices are unavailable. It also indicates the color of unavailable entries
in a single or multiple choice selection list displayed on a color display.
The valid values for the color parameter are:
Value
BLU
GRN
PNK
RED
TRQ
YLW
WHT
Meaning
Blue
Green
Pink
Red
Turquoise
Yellow
White
If the color parameter is not specified, the default color for unavailable choices in a selection field is blue.
This parameter is ignored on a monochrome display.
The display-attribute parameter indicates the display attributes of the choice text specified on the
CHOICE or PSHBTNCHC keyword for the field. The parameter is specified as an expression of the form
(*DSPATR value1 <value2 <value3...>>).
Value
BL
CS
HI
ND
52
Meaning
Blink
Column separator
High intensity
Nondisplay
System i: Programming DDS for display files
Value
RI
UL
Meaning
Reverse image
Underline
The default display attribute for unavailable choices in a selection field on monochrome display stations
is normal (or low) intensity. Also, the first character of an unavailable choice on a monochrome display
station is overwritten with an asterisk (*).
Note: Display attributes CS, HI, and BL can cause fields on 5292, 3179, 3197 Models C1 and C2, 3486,
3487 Model HC, and 34883 workstations to appear as color fields. Separator lines do not appear
when display attributes HI, RI, and UL are used.
When used on a field specification, this keyword is allowed only if there are also one or more CHOICE
or PSHBTNCHC keywords. When used on a subfile control record, this keyword is allowed only if the
SFLSNGCHC or SFLMLTCHC keyword is also used on the subfile control record.
Option indicators are valid for this keyword.
Example
The following example shows how to specify the CHCUNAVAIL keyword:
|....+....1....+....2....+....3....+....4....+....5....+....6....+....7....+....8
A
A
R RECORD
A
F1
2Y 0B 2 5SNGCHCFLD CHECK(ER)
A
CHOICE(1 'Choice number 1')
A
CHOICE(2 'Choice number 2')
A
CHCCTL(1 &CHCCTL1);
A
CHCCTL(2 &CHCCTL2);
A
CHCUNAVAIL((*COLOR TRQ))
A
:
A
:
A
In this example, the unavailable choices for the selection field are displayed in turquoise on a color
display.
Related reference
“SFLMLTCHC (Subfile Multiple Choice Selection List) keyword for display files” on page 213
You use this record-level keyword to define a subfile as a multiple-choice selection list. A
multiple-choice selection list is a scrollable group of items from which the user can select multiple items.
“COLOR (Color) keyword for display files” on page 73
You use this keyword to specify the color of a field on a color display.
CHECK (Check) keyword for display files
You use this keyword to perform a number of functions, depending on the parameter values specified.
Function
Valid parameter values
Validity checking
AB, ME, MF, M10, M10F, M11, M11F, VN, VNE
Keyboard control
ER, FE, LC, RB, RZ
3. Dependent on the monitor attached to the display device.
DDS for display files
53
Cursor control
RL, RLTB
The formats of the keyword are:
CHECK(validity-checking-code [. . .])
CHECK(keyboard-control-code [. . .])
CHECK(cursor-control-code)
The following CHECK keywords are the preferred form of other DDS keywords:
v CHECK(ER) is equivalent to AUTO(RA)
v CHECK(LC) is equivalent to LOWER
v CHECK(RB) is equivalent to AUTO(RAB)
v CHECK(RZ) is equivalent to AUTO(RAZ)
The following CHECK keyword functions can also be specified using the Change Input Default
(CHGINPDFT) keyword at the file, record, or field level:
CHECK keyword
CHGINPDFT equivalent
CHECK(FE)
CHGINPDFT(FE)
CHECK(LC)
CHGINPDFT(LC)
CHECK(ME)
CHGINPDFT(ME)
CHECK(MF)
CHGINPDFT(MF)
Option indicators are valid only for CHECK(ER) and CHECK(ME).
Validity checking
Use CHECK at the field level to specify that the i5/OS operating system or the device is to check the
validity of the data typed into an input-capable (input-only or input/output) field.
CHECK validates the data by applying one or more edit/check algorithms against the data. An error
message is displayed if a specified edit/check algorithm is not satisfied.
Note: See “CHKMSGID (Check Message Identifier) keyword for display files” on page 65 for information
about defining user-specified messages.
The valid edit/check codes are:
Edit/Check code
Meaning
AB
Allow blanks
Use this code at the file level, record level, or field level to allow all-blank input to satisfy validity
checking for an input-capable field when any associated validity check fails. This enables the
passing of data to the program when the workstation user has positioned the cursor to the field
but left it blank (for instance, by pressing the Erase Input key, the Field Exit key, or the spacebar).
For example, FLD1 is an input-capable field with CHECK(M10 ME) in effect. If the workstation
54
System i: Programming DDS for display files
user accidentally types in the field, the M10 algorithm must be satisfied. By specifying
(CHECK(M10 ME AB)), you enable the display station user to clear the field to satisfy validity
checking.
When specified at the file level, this keyword applies for all input-capable fields in the file for
which a validity checking keyword is coded. Likewise, when specified at the record level, this
keyword applies for all input-capable fields in the record for which a validity checking keyword
is coded. At the field level, always specify this keyword with another validity checking keyword
(CHECK(M10, M10F, M11, M11F, VN, VNE), CHKMSGID, COMP, RANGE, or VALUES).
CHECK(AB) should not be specified if SFLROLVAL or SFLRCDNBR is also specified for the field.
CHECK(AB) can be used in database files for reference purposes.
When you consider using CHECK(AB) with other validity checking functions, note that
processing occurs in the following order:
1. Any of the following order:
a. The keyboard shift attribute specified in position 35 (such as alphanumeric shift or
numeric only) can restrict input typing to certain characters.
b. If the keyboard shift attribute is numeric shift, the data type (character or numeric) is set
by the entry in positions 36 through 37 (decimal positions) and restricts input typing to
certain characters.
c. The CHECK(FE), CHECK(MF), and CHECK(ME) keywords, if specified, restrict input
typing.
2. Either of the following order:
a. If CHECK(AB) is specified, data management passes the input data to the program (blanks
for a character field and zeros for a numeric field). No further validity checking is done.
b. If CHECK(AB) is not specified, data management performs the following validity checking
functions before passing the data to the program: CHECK(VN), CHECK(VNE),
CHECK(M10), CHECK(M10F), CHECK(M11), CHECK(M11F), COMP(. . .), RANGE(. . .),
VALUES(. . .).
You cannot specify the CHECK(AB) keyword on a floating-point field (F in position 35).
Option indicators are not valid for this keyword.
ME
Mandatory enter
This code specifies that at least 1 character of data (a blank is valid) must be typed into the field.
Note that when no field currently on the display has been changed, the display station does not
enforce mandatory enter. To enforce mandatory enter, specify DSPATR(MDT) for at least one field
in each record on the display. For all other fields in the record, CHECK(ME) is then enforced.
However, because the device cannot determine if the user has typed data to a field with both
DSPATR(MDT) and CHECK(ME), you should also specify DSPATR(ND) so that this field is not
displayed.
Option indicators are valid for this keyword.
MF
Mandatory fill
This code specifies that if any part of the field is altered, each position in the field must have a
character entered in it. Blanks are considered valid characters.
This code cannot be specified with keyboard control codes (RB or RZ) or with the WRDWRAP
keyword.
Option indicators are not valid for this keyword.
M10/M10F or M11/M11F (IBM® Modulus 10 or Modulus 11 Algorithm)
IBM Modulus 10 self-check algorithm
DDS for display files
55
This code specifies that data typed into the field must satisfy the IBM Modulus 10 (M10 or M10F)
or Modulus 11 (M11 or M11F) self-check algorithm. When you specify CHECK(M10) or
CHECK(M11), the self-check verifies that the field has a valid Modulus 10 or Modulus 11 number
when you press the Enter key or a function key. When you specify CHECK(M10F) or
CHECK(M11F), the self-check verifies that the field has a valid Modulus 10 or Modulus 11
number as the user types the data into the field. You cannot specify both the Modulus 10 and the
Modulus 11 self-check algorithms for the same field or both formats of the same algorithm for the
same field.
A self-check field is composed of two parts: the base number and one check digit. The check digit
is the farthest right digit in the field. The base number and the check digit together make up a
field in your database (for example, an account number). The following figure is an example of
an 8-digit self-check field.
6 3 7 1 2 5 7
1
Base
Number
Check
Digit
RSLL637-0
See the Application Display Programming book
for information about how to use
CHECK(M10), CHECK(M10F), CHECK(M11), and CHECK(M11F).
Notes:
1. The i5/OS operating system supports a maximum length of 31 digits for numeric
fields.
2. You cannot specify the CHECK(M10), CHECK(M10F), CHECK(M11), and
CHECK(M11F) keywords with the COMP(EQ) keyword.
3. You cannot specify the CHECK(M10), CHECK(M10F), CHECK(M11), and
CHECK(M11F) keywords on a floating-point field (F in position 35).
4. You cannot specify the CHECK(M10F) or the CHECK(M11F) keyword in a file
containing the USRDSPMGT keyword.
5. You cannot specify the CHECK(M10F) or the CHECK(M11F) keyword on a field
containing the CHKMSGID or WRDWRAP keyword.
For each position in the base number, there is a Modulus 10 weight factor and a Modulus 11
weight factor. Positions are counted from the farthest right digit (not including the check digit).
The Modulus 10 weight factor is 2 for positions 1, 3, 5, ..., 31. It is 1 for positions 2, 4, 6, ..., 30.
The Modulus 11 weight factors are 2, 3, 4, 5, 6, 7, 2, 3, 4, 5, 6, 7,..., 2, 3, 4, 5, 6, 7, 2 for positions 1,
2,..., 31.
To calculate the Modulus 10 self-check digit, follow these steps:
1. Multiply the units position and every alternate position of the base number by 2.
2. Add the digits in the products to the digits in the base number that were not multiplied.
3. Subtract the sum from the next higher number ending in zero.
The difference is the self-check digit.
For example:
Base number:
Units position and every alternate position:
Multiply by the weight factor, 2:
Products:
Digits not multiplied:
Add the digits of the products and the digits
from the base number that were not used for
multiplication:
56
System i: Programming DDS for display files
6 1 2 4 8
6
2
8
x2
x2
x2
12
4
16
1
4
( 1 + 2 ) + 4 + ( 1 + 6 ) + 1 + 4 = 19
Next higher number ending in 0:
Subtract:
Self-check digit:
20
-19
1
To calculate the Modulus 11 self-check digit, follow these steps:
1. Assign a weight factor to each digit position of the base number. These factors are: 2, 3, 4, 5,
6, 7, 2, 3, 4, 5, 6, 7, 2, 3, . . . starting with the units position of the number and progressing
toward the high-order digit. For example, the base number 991246351 can be assigned the
weight factors as follows:
Base number
Weight factors
2.
3.
4.
5.
9 9 1 2 4 6 3 5 1
4 3 2 7 6 5 4 3 2
Multiply each digit by its weight factor.
Add the products.
Divide this sum by 11.
Subtract the remainder from 11.
The difference is the self-check digit.
For example:
Base number
13739
Weight factors
x6 x5 x4 x3 x2
Multiply each digit by its weight factor
6 15 28 9 18
Add the products
6 + 15 + 28 + 9 + 18 = 76
Divide the sum by 11
76/11 = 6 plus a remainder of 10
Subtract the remainder from 11
11 - 10 = 1
Self-check digit
1
Note: If the remainder in step 4 is 0, the self-check digit is 0. If the remainder is 1, the base
number has no self-check digit; you must make sure that such base numbers are not used
in the fields you define as self-check fields.
Option indicators are not valid for CHECK(M10), CHECK(M10F), CHECK(M11), or
CHECK(M11F).
VN
Validate name
Use this code to specify that the data typed into the field must be a valid simple name. The first
character must be $, #, @, or A through Z. The remaining characters must be alphanumeric ($, #,
@, A through Z, 0 through 9, or underscore (_), and must not contain embedded blanks.
When the CHECK(VN) keyword is specified on a field, the field must be character (keyboard
shift of A, N, X, W, or I), and must be input-capable (usage of I or B).
DDS for display files
57
CHECK(VN) cannot be specified with any of the following keywords:
CHECK(M10)
CHECK(M10F)
CHECK(M11)
CHECK(M11F)
CHECK(VNE)
COMP
RANGE
VALUES
Option indicators are not valid for this keyword.
VNE
Validate name extended
Use this code to specify that the data typed into the field must be a valid extended name.
When the CHECK(VNE) keyword is specified on a field, the field must be character (keyboard
shift of A, N, X, W, or I), input-capable (usage of I or B), and have a maximum length of 255
characters.
If
v
v
v
the name is not delimited by double quotation marks:
The first character must be A through Z, a through z, #, $, or @.
The remaining characters must be A through Z, a through z, #, $, _, or a period.
Lowercase letters will be converted to uppercase.
If the name is delimited by double quotation marks:
v Any character is allowed except:
Hex 00 through Hex 3F
(device control)
Hex FF
(device control)
Hex 40
(blank)
Hex 5C
(*)
Hex 6F
(?)
Hex 7D
(’)
Hex 7F
(″)
v Lowercase letters remain lowercase.
v The system removes quotation marks when they are not needed (if the syntax of the name
meets the requirements of an unquoted name, and all letters are uppercase).
CHECK(VNE) cannot be specified with any of the following keywords:
CHECK(M10)
CHECK(M10F)
CHECK(M11)
CHECK(M11F)
CHECK(VN)
COMP
RANGE
VALUES
Option indicators are not valid for this keyword.
58
System i: Programming DDS for display files
Keyboard control
When the CHECK keyword is used with a keyboard control code, it controls certain data-entry aspects.
The valid keyboard control codes are:
Keyboard control code
Meaning
ER
End of record; equivalent to AUTO(RA)
Use this code so that the workstation user does not need to press the Enter key. Whenever the
workstation user keys a character (including a blank) into the last position of the field, the record
is sent from the device just the same as if the Enter key had been pressed. If you also specify
DSPATR(SP) for the field, the record is sent from the device as soon as the workstation user
selects the field. If you use this function, it should be on the last field typed in by the user for
this record.
Option indicators are valid for this keyword.
FE
Field exit check
This code specifies that the workstation user cannot advance to the next input field without
pressing one of the field exit keys. The cursor remains under the low-order character position of
the field until a valid field exit key has been pressed, even though that character has been typed
in. If the user presses any other key, an error results.
If you want to specify CHECK(FE) for all the input-capable fields in a record format, specify
CHGINPDFT(FE) at the record level. If you want to specify CHECK(FE) for all the input-capable
fields in a file, specify CHGINPDFT(FE) at the file level.
Field exit keys include the Field Exit, Field+, Field-, and cursor movement keys. Which keys are
valid field exit keys depends on the keyboard style being used.
This code applies only to input fields into which the workstation user can type.
Option indicators are not valid for this keyword.
LC
Lowercase; equivalent to LOWER
Use CHECK(LC) for input-only or input/output fields to permit the workstation user to type
lowercase a through z. The way the workstation user types the characters (uppercase or
lowercase) is the way the characters appear on the display and are returned to your program.
If you want to specify CHECK(LC) for all the character input-capable fields in a record format,
specify CHGINPDFT(LC) at the record level. If you want to specify CHECK(LC) for all the
character input-capable fields in a file, specify CHGINPDFT(LC) at the file level.
Your program can display a field that contains both uppercase and lowercase characters.
If you specify this keyword, lowercase a through z remain lowercase. If you do not specify this
keyword, lowercase a through z are changed to uppercase.
The CHECK(LC) keyword has no effect on data-entry keyboards. Data-entry keyboards do not
support lowercase characters a through z.
Option indicators are not valid for this keyword.
Figure 12 shows how to specify the CHECK(LC) keyword.
|...+....1....+....2....+....3....+....4....+....5....+....6....+....7....+....8
00100A
NAME
30
I 3 2CHECK(LC)
A
Figure 12. Specifying the CHECK(LC) keyword
RB
Right-aligned with blank fill; equivalent to AUTO(RAB)
DDS for display files
59
This code shifts data typed into the field to the farthest right positions and fills the remaining
positions with blanks.
For signed numeric fields, you do not need to specify CHECK(RB). Right-aligned with blank fill
is the default. When the value of a signed numeric field is zero, the field appears as all blanks on
the display.
The i5/OS program converts blanks to zeros when returning numeric fields to your program.
Option indicators are not valid for this keyword.
RZ
Right-aligned with zero fill; equivalent to AUTO(RAZ)
This code shifts data typed into the field to the farthest right positions and fills the remaining
positions with zeros.
For signed numeric fields, if you do not specify CHECK(RZ), CHECK(RB) is the default.
Option indicators are not valid with this keyword.
The following list shows programming considerations for CHECK(RB) and CHECK(RZ):
v You can activate right-alignment only by pressing the Field Exit, the Field+, or the Field- key. If you
use the cursor movement keys to exit from a right-aligned field, the field is not right-aligned. It is left
as is.
v Right-aligned fields longer than 15 character positions slow keyboard entries.
v The Dup key fills a right-aligned field from the cursor location to the end of the field with the
duplication character, but the field is not right-aligned.
v You cannot specify the CHECK(RB) or CHECK(RZ) keyword on a field containing the WRDWRAP
keyword.
Example 1
The following example shows how to specify the CHECK keyword for right-aligned with blank fill (RB)
and for right-aligned with zero fill (RZ).
|...+....1....+....2....+....3....+....4....+....5....+....6....+....7....+....8
00010A
R RECORD1
00020A* Numeric only
00030A
DATA1
7Y OI 2 2TEXT('No right-adjust')
00040A
DATA2
7Y OI 3 2CHECK(RZ)
00050A* Signed numeric
00060A
DATA3
7S OI 4 2TEXT('CHECK(RB) is the default')
00070A
DATA4
7S OI 5 2CHECK(RZ)
00080A* Character
00090A
DATA5
7
I 6 2TEXT('No right-adjust')
00100A
DATA6
7
I 7 2CHECK(RB)
A
When you specify the CHECK keyword for right-aligned with zero or blank fill, fill the following
displays:
Field name
Data typed in
Key pressed
Result on display
Numeric only
DATA1
1. 1 2 3 _ _ _ _
v Field Exit
v 123____
2. 1 2 3 – _ _ _
v Field Exit
v 123–___
3. 0 _ _ _ _ _ _
v Field Exit
v 0 _ _ _ _ _ _ _ See note.
4. _ _ _ _ _ _ _
v Field Exit
v _ _ _ _ _ _ See note.
60
System i: Programming DDS for display files
Field name
Data typed in
Key pressed
Result on display
DATA2
1. 1 2 3 _ _ _ _
v Field Exit
v 0000123
2. 1 2 3 – _ _ _
v Field Exit
v 000123–
3. 0 _ _ _ _ _ _
v Field Exit
v 0000000
4. _ _ _ _ _ _ _
v Field Exit
v 0000000
1. 1 2 3 _ _ _ _ _
v Field Exit
v ____123_
2. 1 2 3 _ _ _ _ _
v Field-
v ____123–
3. 0 _ _ _ _ _ _ _
v Field Exit
v _ _ _ _ _ _ 0 _ See note.
4. _ _ _ _ _ _ _ _
v Field Exit
v _ _ _ _ _ _ _ _ See note.
1. 1 2 3 _ _ _ _ _
v Field Exit
v 0000123_
2. 1 2 3 _ _ _ _ _
v Field-
v 0000123–
3. 0 _ _ _ _ _ _ _
v Field Exit
v 0000000_
Signed Numeric
DATA3
DATA4
4. _ _ _ _ _ _ _ _
v Field Exit
v 0000000_
Note: The i5/OS operating system converts blanks to zeros when returning numeric fields to
your program. Therefore, this field is returned to your program as all zeros.
Character
DATA5
DATA6
1. 1 2 3 _ _ _ _
v Field Exit
v 123____
2. 1 2 3 – _ _ _
v Field Exit
v 123–___
3. 0 _ _ _ _ _ _
v Field Exit
v
4. _ _ _ _ _ _ _
v Field Exit
v _______
5. A B C _ _ _ _
v Field Exit
v ABC____
1. 1 2 3 _ _ _ _
v Field Exit
v ____123
2. 1 2 3 –_ _ _
v Field Exit
v __ _ 1 2 3 –
3. 0 _ _ _ _ _ _
v Field Exit
v ______0
4. _ _ _ _ _ _ _
v Field Exit
v _______
5. A B C _ _ _ _
v Field Exit
v __ _ _ A B C
0_ _ _ _ _ _
Cursor control
When the CHECK keyword is used with a cursor control code, it specifies that the cursor is to move
from right to left. This feature is designed for languages where information is read right to left.
The i5/OS operating system does not ensure that right-to-left files are opened only for display stations
capable of right-to-left cursor movement. Therefore, all workstations in the same system should be
configured with the same language capability and with the same right-to-left capability.
The valid cursor control codes that can be specified for cursor control are:
Cursor control code
Meaning
RL
Right-to-left cursor movement within fields
Use the CHECK(RL) keyword at the file, record, or field level to specify that the cursor should
move from right to left within input-capable character fields. At the file level, specifying
CHECK(RL) makes the cursor move from right to left in all input-capable character fields in the
file. At the record level, specifying CHECK(RL) makes the cursor move from right to left in all
input-capable character fields in the record. At the field level, specifying CHECK(RL) makes the
cursor move from right to left in only the field with which it is associated.
Example 2:
DDS for display files
61
The following example shows how to specify the CHECK(RL) keyword at the file level.
|...+....1....+....2....+....3....+....4....+....5....+....6....+....7....+....8
00010A
CHECK(RL)
00020A
R DSPLY
A
Example 3:
The following example shows how to specify the RL cursor control with edit check.
|...+....1....+....2....+....3....+....4....+....5....+....6....+....7....+....8
A
:
A
:
A
R RECORD1
CHECK(RL AB)
A
:
A
:
A
R RECORD2
A
INPFLD
4
I 4 10CHECK(RL MF)
A
:
A
:
A
Note: If you want to specify the RL cursor control code with an edit/check code, you can do so
only if the edit/check code is valid at the level you specify. In the example above,
CHECK(RL AB) is specified at the record level because AB is valid at that level.
CHECK(RL MF) is specified at the field level because MF is valid only at that level.
RLTB
Right-to-left, top-to-bottom cursor movement from field to field
Use the CHECK(RLTB) keyword only at the file level. It specifies the direction the cursor is to
advance from input-capable field to input-capable field. CHECK(RLTB) specifies that on exiting
from a field, the cursor advances by moving from right to left and from top to bottom of the
display until it reaches the next input-capable field. You can specify the RLTB cursor control code
with only the edit/check code AB, as the others are not valid at the file level.
Note: Specifying CHECK(RLTB) does not change which input-capable field the cursor is
positioned in when the display initially appears.
Example 4:
The following example shows how to specify the CHECK(RLTB) keyword.
|...+....1....+....2....+....3....+....4....+....5....+....6....+....7....+....8
00010A
CHECK(RLTB)
00020A
R PROMPT
A
Right-to-left capability restrictions
The right-to-left capability includes the following restrictions:
v The check digit for modulus checking is the farthest right byte in the field.
v Katakana cannot be used with right-to-left support.
v CHECK(RL) and CHECK(RLTB) cannot be specified with user-defined records (having the USRDFN
keyword).
v CHECK(RL) applies only to character fields.
v You cannot specify the CHECK(RB) or CHECK(RZ) keyword on a field containing the WRDWRAP
keyword.
A warning message appears for the following conditions:
v A right-to-left field that also allows magnetic card reader operator identification data (DSPATR(OID)
keyword)
62
System i: Programming DDS for display files
v A right-to-left field that spans more than one line
v A right-to-left field that is also a self-check field (CHECK(M10) or CHECK(M11) keyword)
v A right-to-left field for which CHECK(RZ) or CHECK(RB) is specified
Option indicators are not valid with cursor control codes.
Example 5
The following example shows how to specify the validity-checking CHECK keywords.
|...+....1....+....2....+....3....+....4....+....5....+....6....+....7....+....8
00060A
R RECORD1
CHECK(AB)
00070A
FIELD11
10
B 1 2TEXT('CHECK(AB) not propagated to +
00080A
this field')
00090A
FIELD21
10
B 1 22CHECK(VN)
00100A
TEXT('CHECK(AB) is propagated to +
00110A
this field')
00120A
FIELD31
10
B 1 42CHECK(VNE)
00130A
TEXT('CHECK(AB) is propagated to +
00140A
this field')
00150A*
00160A
R RECORD2
00170A
FIELD12
10
B 2 2CHECK(VN) CHECK(AB)
00180A
FIELD22
10
B 2 22CHECK(VN AB)
00190A
FIELD32
1
B 2 42CHECK(AB) VALUES('A' 'B' 'C')
00200A
FIELD42
10
B 2 62CHECK(VN)
00210A
FIELD52
10
B 3 2CHECK(VNE)
00220A
FIELD62
10
B 3 22CHECK(VNE AB)
00230A
FIELD72
10
B 4 1CHECK(ME MF)
00240A
FIELD82
8 OB 4 22CHECK(M10)
00250A
FIELD92
10 OB 4 42CHECK(M11)
A
Related reference
“AUTO (Auto) keyword for display files” on page 37
Under some circumstances, the AUTO keyword is equivalent to the CHECK keyword.
“LOWER (Lower) keyword for display files” on page 148
The LOWER keyword is equivalent to the CHECK(LC) keyword.
CHGINPDFT (Change Input Default) keyword for display files
You use this file-level, record-level, or field-level keyword to change one or more input defaults for
input-capable fields.
Without parameter values, this keyword removes the underline for input-capable fields (input only or
input/output). With parameter values, this keyword applies the specified display attributes or keyboard
controls to the affected input-capable fields.
The format of the keyword is:
CHGINPDFT[(input-default1 input-default2 . . .)]
Valid parameter values for this keyword are:
Parameter value
None
BL
CS
HI
RI
Equivalent DDS keyword
DSPATR(UL) specified but not
selected
DSPATR(BL)
DSPATR(CS)
DSPATR(HI)
DSPATR(RI)
Meaning
Remove underline
Blinking field
Column separators
High intensity
Reverse image
DDS for display files
63
Parameter value
UL
FE
LC
ME
MF
Equivalent DDS keyword
DSPATR(UL)
CHECK(FE)
CHECK(LC) or LOWER
CHECK(ME)
CHECK(MF)
Meaning
Underline
Field exit
Lowercase
Mandatory enter
Mandatory fill
Note: If DSPATR(UL) is specified for a field, the CHGINPDFT keyword cannot control underlining for
that field.
The above equivalent DDS keywords apply only to output fields. For input and both fields, DSPATR(UL)
must also be specified but not selected in addition to the equivalent keywords. This is because
DSPATR(UL) is applied to input and both fields by default when CHGINPDFT is not specified.
Two common ways to use this keyword are to allow lowercase data entry for all input-capable fields in a
record format or file, and to specify column separators for all input-capable fields in a record format or
file.
At the file level, this keyword applies to all input-capable fields in the file. At the record level, this
keyword applies to all input-capable fields in the record format. At the field level, this keyword applies
only to the fields for which it is specified.
If you specify the CHGINPDFT keyword at more than one level, the lower level keyword overrides the
higher level keyword. Thus, specifying CHGINPDFT(BL) at the file level and CHGINPDFT(HI) for a
record format causes all input-capable fields in the file except those in that record format to blink. In that
record format, all input-capable fields are highlighted.
The CHGINPDFT keyword can be specified with any CHECK or DSPATR keyword. If you specify
CHGINPDFT at the file, record, or field level, you can add check codes or display attributes to single
fields by specifying CHECK or DSPATR at the field level. For instance, if you specify CHGINPDFT(CS) at
the record level and DSPATR(HI) at the field level, the field is displayed with column separators and is
highlighted. In addition, the CHECK or DSPATR keyword at the field level controls the check code or
display attribute specified with it. For example, if you specify CHGINPDFT(CS) at the record level and
DSPATR(CS) with option indicators at the field level, the setting of the option indicators controls the
column separators for the field.
If you display a field with UL, RI, and HI in effect, no matter whether specified on the CHGINPDFT
keyword, the DSPATR keyword, or a combination of both, the field is not displayed.
When specified at the file or record level, CHGINPDFT(LC) does not apply to numeric fields. If specified
for a numeric field, CHGINPDFT(LC) is ignored.
CHGINPDFT(MF) is not allowed with CHECK(RB), CHECK(RZ), AUTO(RAB), AUTO(RAZ), or
WRDWRAP keyword.
Option indicators are not valid for this keyword.
Example
The following example shows how to specify the CHGINPDFT keyword.
|...+....1....+....2....+....3....+....4....+....5....+....6....+....7....+....8
00010A
R RECORD1
CHGINPDFT
00020A
FLD1
10
B 1 2
00030A
FLD2
10
2 2
00040A
R RECORD2
CHGINPDFT(CS)
00050A
FLD3
10
I 3 2
64
System i: Programming DDS for display files
00060A
00070A
00080A
00090A
00100A
00110A
00120A
00130A
A
FLD4
FLD5
10
10
FLD6
R RECORD3
FLD7
FLD8
10
B
B
4
5
01
02
10
10
6
I
I
7
8
2
2
DSPATR(CS)
2
CHGINPDFT(CS)
2
2
DSPATR(HI)
CHGINPDFT is specified at the record level for RECORD1, RECORD2, and RECORD3:
v For RECORD1, CHGINPDFT removes the underline for FLD1.
v For RECORD2, CHGINPDFT can have the following results:
– FLD3 and FLD4 have column separators.
– FLD5 has column separators only when DSPATR(CS) is selected.
– FLD6 (an output-only field) has no column separators.
v For RECORD3, CHGINPDFT can have the following results:
– FLD7 and FLD8 have column separators.
– FLD8 is also highlighted when DSPATR(HI) is selected.
CHKMSGID (Check Message Identifier) keyword for display files
You use this field-level keyword to identify an error message that is issued when a validity check error is
detected.
If you do not specify the CHKMSGID keyword, the system supplies a message. You specify the
associated validity checking rules on a CHECK(M10), CHECK(M11), CHECK(VN), CHECK(VNE), CMP,
COMP, RANGE, or VALUES keyword.
The format of the keyword is:
CHKMSGID(message-id [library/]message-file [&message-data-field])
The message-ID parameter specifies the message description that contains the text to be displayed on the
message line.
The message-file and library parameters identify the message file containing the message descriptions.
The library name is optional. If it is not specified, the library list (*LIBL) that is in effect at run time is
used to search for the message file.
The message-data-field parameter specifies the name of the field that contains the message replacement
text to be displayed on the message line. The format of the message-data-field parameter is &field-name
where field-name is the name of the field containing the message replacement text. The field name must
exist in the record format, and the field must be defined as a character field (data type A) with usage P.
CHKMSGID is allowed only on fields which also contain a CHECK(M10), CHECK(M11), CHECK(VN),
CHECK(VNE), CMP, COMP, RANGE, or VALUES keyword. The field must be input-capable (usage B or
I).
Option indicators are not valid for this keyword.
Example
The following example shows how to specify the CHKMSGID keyword.
|...+....1....+....2....+....3....+....4....+....5....+....6....+....7....+....8
00010A
MSGLOC(20)
00020A
R RECORD1
DDS for display files
65
00030A
00040A
00050A
00060A
00070A
00080A
A
FIELD1
10A
MSGFLD1
FIELD2
12A P
1A I 4 20VALUES('A' 'B' 'I')
CHKMSGID(XYZ9999 APPLMSGS)
3S OB 4 25RANGE(023 199)
FIELD3
B
4
2CHECK(VN) CHKMSGID(USR1234 +
QGPL/USRMSGS &MSGFLD1);
When RECORD1 is read from the display screen:
v If FIELD1 does not contain a valid name, message USR1234 from the message file USRMSGS in library
QGPL with the replacement text specified in MSGFLD1 is displayed on line 20.
v If the data entered into FIELD2 is not the letter A, B, or I, message XYZ9999 from *LIBL/APPLMSGS is
displayed on line 20.
v If the data entered into FIELD3 is less than 023 or greater than 199, the system-supplied message
CPF5224 (value for the field is not in a valid range) is displayed on line 20 because the CHKMSGID
keyword is not specified.
Related reference
“VALUES (Values) keyword for display files” on page 247
You use this field-level keyword to specify a list of values that are valid for the user to type into the
field.
CHOICE (Selection Field Choice) keyword for display files
You use this field-level keyword to define a choice for a selection field.
The format of the keyword is:
CHOICE(choice-number choice-text [*SPACEB])
The choice-number parameter defines an identification number for this choice. This parameter is required.
The choice number returns to the application to indicate which choice in the selection field was selected.
On non-graphical displays, the choice number is also displayed to the left of the choice text. Valid values
for the choice-number are positive integers greater than 0 and less than or equal to 99. Duplicate
choice-number values within a selection field are not allowed.
The choice-text parameter defines the text that appears in the selection field for the choice. This
parameter is required. The parameter can be specified in one of two forms:
v As a character string: ’Choice text ’
v As a program-to-system field: &field-name
The field specified must exist in the same record as the selection field and must be defined as a character
field with usage P.
The choice text for all choices within a selection field must fit on the display for the smallest display size
specified in the file. Therefore, the maximum length for the choice text depends on the following items:
v The position of the selection field
v The length of the longest choice number that is displayed to the left of the choice
v The length of the choice text itself
v The number of columns in the selection field
v The width of the gutter between columns
If the smallest display size is 24 x 80, the above must be less than or equal to 80. If the smallest display
size specified is 27 x 132, this sum must be less than or equal to 132.
66
System i: Programming DDS for display files
Within the choice text, you can specify a mnemonic for the choice by using a greater-than character (>) to
indicate the mnemonic character. The character to the right of the > sign is the mnemonic. The mnemonic
is used only on a character-based graphical display attached to a controller that supports an enhanced
interface for nonprogrammable workstations, where the choices are rendered using radio buttons. The
mnemonic is ignored on displays where the field is rendered using numeric selection because the system
does not support both numeric and mnemonic selection on a selection field. The following examples
show how to specify mnemonics.
Choice text
Appears as
’>File’ File
’F>inish’
Finish
’Save >As...’
Save As...
’X >= 1’
X=1
In order to specify > as a character in the text, you must specify it twice, just as you must specify the
apostrophe character twice in order to get a single apostrophe character in the text. For example:
Choice text
Appears as
’X >>= 1’
X >= 1
’X >>>= 1’
X >= 1
Note: It is not possible to specify the > sign as the mnemonic.
The mnemonic character indicated must be a single-byte character and must not be a blank. Only one
mnemonic is allowed in the choice text, and the same mnemonic character cannot be specified for more
than one choice.
The *SPACEB parameter is optional and indicates that a blank space (or line) should be inserted before
this choice. This parameter is used to specify logical grouping of choices that are numbered consecutively.
For vertical selection fields (selection fields arranged in a single column), if the choice numbers are not
consecutive, a blank space is automatically inserted between non-consecutive choices. This does not
happen for horizontal selection fields (selection fields arranged in multiple columns).
When the CHOICE keyword is specified on a field, either the SNGCHCFLD or the MLTCHCFLD
keyword must also be specified.
Several CHOICE keywords can be specified for one selection field. The maximum number of CHOICE
keywords that can be specified depends on the position of the selection field and the display size. All
choices must fit on the smallest display size specified for the file.
Option indicators are valid for this keyword. When a CHOICE keyword is turned off, the list of choices
is compressed.
Example
The following example shows how to specify the CHOICE keyword:
DDS for display files
67
|...+....1....+....2....+....3....+....4....+....5....+....6....+....7....+....8
A
R RECORD
A
F1
2Y 0B 1 2SNGCHCFLD
A 01
CHOICE(1 '>Undo
')
A
CHOICE(2 &MARKTXT);
A
CHOICE(3 '>Copy
')
A
MARKTXT
12A P
A
In this example, three choices are defined for the single-choice selection field F1. The text for choice 2 is
contained in field MARKTXT, and the mnemonic for choice 2 must be contained in the text supplied by
the application at run time. If indicator 01 is off when the record is written, only choices 2 and 3 are
displayed.
CHRID (Character Identifier) keyword for display files
You can use this field-level keyword to specify that a named field be translated if the CHRID parameter
value for the display file differs from the CHRID parameter value for the workstation.
This can be important when extended alphabetics (characters such as u with an umlaut or c with a
cedilla) are to be displayed or typed in.
This keyword has no parameters.
If the CHRID keyword is not specified for a field and the CHRID value for the display file is not
*JOBCCSID, data displayed in that field is displayed in the character set of the device used to type the
data. How the data is displayed cannot be predicted and depends on how code points used in the
original code page map to the code page used on the device.
The CHRID keyword is not valid on constant fields, numeric fields (fields with decimal positions
specified in positions 36 through 37), message fields (M specified in position 38), hidden fields (H
specified in position 38), or program-to-system fields (P in Position 38).
The CHRID keyword is ignored if the CHRID value for the display file is *JOBCCSID.
The CHRID keyword cannot be specified with the DUP (Duplication) keyword.
If you specify the CHRID keyword with the DFT keyword on a field, the initial (default) value of the
field is not translated, but data entered into that field is translated.
Option indicators are not valid for this keyword, although option indicators can be used to condition the
field for which it is specified.
Example
The following example shows how to specify the CHRID keyword.
|...+....1....+....2....+....3....+....4....+....5....+....6....+....7....+....8
00010A
R RECORD1
00020A
TITLE
40
1 20CHRID
A
The field TITLE is a named field. With the CHRID keyword specified, character translation can occur on
both output and input, depending on the conditions described in the Application Display Programming
book
68
.
System i: Programming DDS for display files
CLEAR (Clear) keyword for display files
You use this file-level or record-level keyword to specify that your program is to receive control if the
workstation user presses the Clear key, and optionally, that the i5/OS operating system is to set on the
specified response indicator.
See “System/36 environment considerations for display files” on page 261 for special considerations
when you specify the CLEAR keyword in files that are used in the System/36 environment.
The format of the keyword is:
CLEAR[(response-indicator ['text'])]
The Clear key is processed like a command attention key (no input data is transmitted from the device).
The i5/OS operating system does not clear the display; your program must perform the required function
(such as clearing fields or records from the display).
If you do not specify this keyword and the display station user presses the Clear key, the i5/OS program
displays a message indicating that it is not valid at that time.
Note: On display stations with the typewriter-like keyboard, the Clear key is activated by pressing CMD,
then pressing the Shift key and the left arrow above the Field Exit key. On workstations with the
data-entry keyboard, press CMD, then press the Shift key and the farthest right blank key on the
top row.
The optional text is included on the printout created at program compilation time to explain the intended
use of the indicator. This text has no function in the file or the program other than as a comment. The
single quotation marks are required. If you specify more than 50 characters between the single quotation
marks, the text is truncated to 50 characters on the program printout.
Option indicators are valid for this keyword.
Example
The following example shows how to specify the CLEAR keyword.
|...+....1....+....2....+....3....+....4....+....5....+....6....+....7....+....8
00101A
CLEAR(10 'Clear key pressed')
A
CLRL (Clear Line) keyword for display files
You use this record-level keyword to specify that the i5/OS operating system is to clear (delete) a specific
number of lines before the record is displayed. Only those lines are cleared.
Note: As with OVERLAY, other records remain on the display.
See the Application Display Programming book
are used in the System/36 environment.
for information about how to use CLRL in files that
The format of the keyword is:
CLRL(nn|*END|*NO|*ALL)
You can specify the CLRL keyword in one of the following ways:
v Specify nn, where nn is an integer between 1 and 27. The number specified is the number of lines
cleared, starting with and including the first line on which the record is to be displayed. If the SLNO
(Starting Line Number) keyword is also specified for this record format, the clearing of lines begins
with the starting line number in effect for the record format at the time it is displayed.
DDS for display files
69
Note: When you specify nn, the record must have at least one field defined.
v Specify *END to indicate that all lines starting with and including the first line on which the record is
to be displayed are to be cleared. For a 24 x 80 display, lines up to and including line 24 are cleared.
For a 27 x 132 display, lines up to and including line 27 are cleared.
v Specify *NO so that no lines on the display are cleared before displaying the record whose format you
are defining. The displayed record overlays any data already on the display.
v Specify *ALL so that all of the lines on the display are cleared before displaying the record whose
format you are defining. At least one field must be defined in the record format.
When a record format begins with a field in position 1, the beginning attribute byte of the format is in
the last position of the previous line. The previous line number is the starting line number in the format.
This also applies to a SLNO format with a field defined in the DDS in line 1, position 1.
If the record format for which the CLRL keyword is specified has one or more input-capable fields, any
records that are overlaid are no longer recognized by the i5/OS operating system. That is, any
input-capable fields can no longer be typed into, any input operation written to one of those records
results in an error, and they cannot be cleared by selecting the ERASE keyword.
If you specify the CLRL(nn) keyword in a record format without input-capable fields, the input-capable
fields in the overlapped records remain input-capable. That is, input-capable fields in the overlaid records
remain input-capable, and input operations written to those record formats are still valid. If the ROLLUP
or ROLLDOWN keywords are specified on the record containing the CLRL keyword, they are ignored.
Records with the CLRL keyword and no input-capable fields are not cleared properly when they are
overlaid by other records that have the OVERLAY keyword specified. The lines needed for the
overlapping record are cleared and the lines not needed for the overlapping record remain on the display.
You can use the CLRL(*NO) keyword to prevent an overlapped record from being cleared when the
overlapping record is written to the display. If you use this keyword, any records being displayed that
are to be overlapped are not cleared from the display. The new record overlays them entirely or partially.
There is a performance advantage to using CLRL(*NO) if you have a display containing constants and
data that is repeatedly sent to the display. Sending constants as a separate format and using the
CLRL(*NO) keyword for the format containing the data reduces the time required to send the record
format to the display.
If the CLRL keyword is not specified and neither OVERLAY nor PUTOVR (Put with Explicit Override) is
specified, the entire display is cleared.
If the CLRL keyword is used and the PUTOVR or PUTRETAIN keyword is in effect, the clearing of any
lines might conflict with the PUTOVR or PUTRETAIN function. The PUTOVR or PUTRETAIN keyword
requires that the fields being overridden be on the display, while the CLRL(nn) or CLRL(*END) keyword
clears those fields first. If a record becomes unavailable for input because of the CLRL(nn) or
CLRL(*END) keyword, the input-capable fields remain input-capable if the PUTOVR keyword is in effect.
However, the i5/OS operating system sends a message if the program attempts to read such a record.
If you specify the CLRL keyword, you should also specify RSTDSP(*YES) on the Create Display File
(CRTDSPF) or Change Display File (CHGDSPF) command. Otherwise, data on the display can be lost if
the file is suspended.
Preventing overlapped records from being cleared
The CLRL keyword cannot be specified with any of the following keywords:
ASSUME
KEEP
SFL
70
System i: Programming DDS for display files
SFLCTL
USRDFN
A warning message appears at file creation time if the CLRL keyword is specified on a record with the
DSPMOD keyword. At run time, the CLRL keyword is ignored when the display mode changes.
The CLRL keyword cannot be specified for the record format specified by the PASSRCD keyword.
Option indicators are not valid for this keyword.
Example
The following example shows how to specify the CLRL keyword.
|...+....1....+....2....+....3....+....4....+....5....+....6....+....7....+....8
00010A
R RECORD1
CLRL(5)
00020A
FLD1
5
3 2
00030A
FLD2
10 OB 5 2
00040A
FLD3
10
I 6 2
00050A*
00060A
R RECORD2
CLRL(*NO)
00070A
FLD1
5 2
2 2
00080A
FLD2
5
H
00090A
FLD3
10
I 4 2
00100A*
00110A
R RECORD3
CLRL(*END)
00120A
FLD1
5
B 5 2
00130A
FLD2
5
I 8 2
A
Lines 3, 4, 5, 6, and 7 are cleared before RECORD1 is displayed. In RECORD2, no lines are cleared, and
when the record is displayed, it will overlay anything already displayed. Lines 5 through 24 are cleared
before RECORD3 is displayed.
CMP (Comparison) keyword for display files
This keyword is equivalent to the COMP keyword.
The format of the keyword is:
CMP(relational-operator value)
The COMP keyword is preferred.
Related reference
“COMP (Comparison) keyword for display files” on page 77
You use this field-level keyword to specify that the i5/OS operating system is to compare the data
that the workstation user types into an input or input/output field with the specified value.
CNTFLD (Continued-Entry Field) keyword for display files
You use this field-level keyword to define a field as a continued-entry field.
Continued-entry fields are sets of associated entry fields that are treated by the workstation controller as
a single field during field-data entry and editing. If the display device is not attached to a controller that
supports an enhanced interface for nonprogrammable workstations, each segment of the continued entry
field is treated separately when editing is performed on the field.
Figure 13 on page 72 illustrates the use of continued fields to create a rectangular text entry field.
DDS for display files
71
Enter Text . . .
________________________________________
________________________________________
________________________________________
________________________________________
________________________________________
Figure 13. Continued-Entry field in rectangular arrangement
The text input format is more appealing to the user than a single input field that wraps across multiple
display lines. Even though the last line does not occupy the full width of the column, no other field is
allowed in the rectangle. A continued-entry field allows a multiple-row entry field to be defined inside a
window.
The format of the keyword is:
CNTFLD(width of column)
One parameter must be specified.
The width of the column parameter specifies the number of columns to be used for this continued field.
This value must fit within the width of the display or window. This value must be less than the length of
the field.
The field containing the CNTFLD keyword must be defined as an input-capable field with the data type
A. It cannot be defined in a subfile.
The following keywords cannot be specified on a field with the CNTFLD keyword:
v AUTO (RAB, RAZ)
v CHECK(AB, MF, RB, RZ, RLTB)
v CHOICE
v DSPATR(OID SP)
v EDTMSK
The CNTFLD keyword must be defined with at least 2 spaces separating it from other fields.
Option indicators are not valid for this keyword.
|
|
|
|
|
|
|
Although the maximum number of input fields is 256, the use of the CNTFLD keyword can impact the
field count. The segments of CNTFLD fields are treated at run time as separate input fields on some
emulators or controllers. Some controllers consider each segment of the field as an actual input field, and
each segment counts toward the 256 maximum. However, some emulators count a CNTFLD field as a
single field toward the count of 256. But, they might keep track of the segments separately. One emulator
is known to have a maximum of 512 segments allowed. Therefore, when an emulator and a controller use
the same display file, the emulator might allow more CNTFLD fields than the controller.
See “CNTFLD (Continued-Entry Field) keyword” on page 272 for information about using this keyword
with DBCS data.
Example
The following example shows how to specify the CNTFLD keyword:
|...+....1....+....2....+....3....+....4....+....5....+....6....+....7....+....8
00010A
R RECORD
00020A
F1
90A B 3 4CNTFLD(30)
In this example, a multiple-row entry field is defined. The entry field contains 3 lines and is 30 columns
wide.
72
System i: Programming DDS for display files
COLOR (Color) keyword for display files
You use this keyword to specify the color of a field on a color display.
This field-level keyword specifies the color of a field on a color display (3179, 3197 Models C1 and C2,
3477 Model FC, 3486, 3487 Model HC, 34884 or 5292 Color Display Stations only). This keyword is
ignored if it is selected for a field displayed on monochrome display stations. You can specify one
parameter value for the COLOR keyword, but you can specify more than one COLOR keyword on each
field.
The format of the keyword is:
COLOR(GRN | WHT | RED | TRQ | YLW | PNK | BLU)
The valid parameter values are:
Value Meaning
GRN
Green
WHT
White
RED
Red
TRQ
Turquoise
YLW
Yellow
PNK
Pink
BLU
Blue
Because green is the default color of the fields on color display stations, you need to specify
COLOR(GRN) only to keep the color of a field green. Specifying DSPATR(HI), DSPATR(CS), or
DSPATR(BL) for a field changes the color of the field unless you also specify COLOR(GRN).
Option indicators are valid for this keyword.
When you specify the COLOR keyword more than once for a field, you must specify option indicators
with each COLOR keyword. If more than one COLOR keyword is in effect for an output operation, the
i5/OS operating system uses the first COLOR keyword that is specified in the DDS (see “Example 1” on
page 75). You cannot specify the same color more than once for a field.
The number of COLOR keywords you can specify in one display file is limited by the maximum size of
an internal storage area of the system called the screen attribute array. The maximum size of the screen
attribute array is 32 763 bytes for the entire display file. Each COLOR keyword you specify in the file
uses up a significant amount of storage within this array.
If you use many COLOR keywords in a file, particularly with conditioning, you should consider the
amount of internal storage these keywords will require. If the 32 763-byte limit is exceeded, message
CPF0673 (Too many COLOR or DSPATR keywords specified in file) is issued during file creation. To
determine the amount of storage required for a particular COLOR keyword, use the following algorithm:
(# of conditions for the keyword) x 2 + 2 + 29 = # of bytes required
in the screen
attribute array
for the keyword
4. Dependent on the monitor attached to the display device.
DDS for display files
73
For example, suppose a file contains 8 fields, each field contains 9 COLOR keywords, and each COLOR
keyword is optioned using 3 conditions. Using the above algorithm, each COLOR keyword requires 520
bytes in the screen attribute array:
3 x 2 + 2 + 29 = 520 bytes
Because there are nine COLOR keywords per field and eight fields in the file, the total storage required in
the screen attribute array is 37 440 bytes (520 x 9 keywords x 8 fields). Because 37 440 is greater than
32 763, message CPF0673 is issued at file-creation time.
Using the COLOR keyword with the DSPATR keyword
In some combinations of COLOR and DSPATR, both keywords have effect. Those combinations are:
COLOR
DSPATR
Any
RI (reverse image)
Any
UL (underline)
RED
BL (blinking field)
RED
BL and RI
RED
BL and UL
RED
RI and UL
GRN
RI and UL
TRQ
RI and UL
PNK
RI and UL
For example, if COLOR(YLW) and DSPATR(RI) are both in effect, the field appears as black characters on
a yellow background.
In some combinations of the COLOR and DSPATR keywords, some of the parameter values are ignored.
Those combinations are shown in the following table.
COLOR
DSPATR
Effect
Any
Any
Any
ND (nondisplay)
HI (high intensity)
CS (column separators)
All colors are ignored
HI is ignored
CS is ignored1
GRN
WHT
TRQ
YLW
PNK
BLU
BL
BL
BL
BL
BL
BL
BL
BL
BL
BL
BL
BL
RED
RI and BL and UL
UL is ignored3
YLW BLU WHT
RI and UL
RI and UL
RI and UL
RI is ignored
RI is ignored
RI is ignored
is
is
is
is
is
is
ignored2
ignored2
ignored2
ignored2
ignored2
ignored2
1
Turquoise and yellow fields have column separators even if DSPATR(CS) is not specified. (The column separators
appear as small blue dots between characters on color displays. They disappear when the display station user sets
the color display station for reduced line spacing.)
2
The only color that can blink is red.
3
Underlines are also removed from input-capable fields, which are underlined by default.
74
System i: Programming DDS for display files
For example, if COLOR(YLW) and DSPATR(HI) are both selected for an output operation, the field is
yellow but not high intensity.
Using the DSPATR keyword on color displays
When you specify the DSPATR keyword without the COLOR keyword, fields are displayed on color
displays with the colors in the following table but without the specified display attributes.
Table 4. DSPATR keyword on color displays
DSPATR(CS) display
attribute selected
DSPATR(HI) display
attribute selected
DSPATR(BL) display
attribute selected
Color produced on the
color display station
Green (normal)
Turquoise1
X
X
X
X
White
X
Red, no blinking
X
Red, with blinking
Yellow1
X
X
X
X
X
Pink
X
Blue
1
Turquoise and yellow fields are displayed with column separators (which are always blue) except when the
workstation user sets the color display station for reduced line spacing.
For example, if DSPATR(HI) is selected for a field and the COLOR keyword is not specified, the field is
white but not highlighted on a color display.
The COLOR keyword is ignored if it is selected for a monochrome display.
Example 1
The following example shows the effects of specifying COLOR and DSPATR for a field.
|...+....1....+....2....+....3....+....4....+....5....+....6....+....7....+....8
00010A
R RECORD
1
00020A
1 2'Column Heading'
00030A
DSPATR(HI)
00040A
2 FIELD1
5
3 2
00050A
3 FIELD2
5
I 5 2COLOR(YLW)
00060A
4 FIELD3
5
7 2DSPATR(BL)
00070A
5 FIELD4
5
I 9 2
00080A 42
COLOR(YLW)
00090A 43
COLOR(TRQ)
00100A 44
COLOR(BLU)
A
1
On color displays, the constant field Column Heading is white; on monochrome displays, it is
highlighted.
2
On all displays, FIELD1 is green.
3
On color displays, FIELD2 is yellow with blue column separators. On all displays, the field is
underlined because it is an input-capable field.
4
On color displays, FIELD3 is red and does not blink; on monochrome displays, it blinks.
5
On color displays, FIELD4 can appear in one of the following colors:
DDS for display files
75
v
v
v
v
Green, if no indicators are on
Yellow, if indicator 42 is on (no matter how other indicators are set)
Turquoise, if indicator 43 is on and indicator 42 is off
Blue, if indicator 44 is the only indicator on
On monochrome displays, FIELD4 is green. On all displays, FIELD4 is underlined.
Example 2
The following example shows one way of specifying a field for use as an input-capable field on both
color and monochrome displays.
|...+....1....+....2....+....3....+....4....+....5....+....6....+....7....+....8
00010A
R RECORD
00020A 2 1
FIELDA
5
B 2 2COLOR(TRQ)
00030A 44
ERRMSG('Record not found' 44)
A
1
On color displays, FIELDA is turquoise with blue column separators; on monochrome displays, it
is green.
2
If option indicator 44 is set on when FIELDA is displayed, the ERRMSG keyword is in effect and
has the following effect:
v On color displays, FIELDA is turquoise and its image is reversed. (Because of the COLOR
keyword, it is not highlighted.) The error message Record not found is displayed on the
message line in white.
v On monochrome displays, FIELDA is highlighted and its image is reversed. The error message
Record not found is also highlighted and is displayed on the message line.
Related reference
“CHCAVAIL (Choice Color/Display Attribute when Available) keyword for display files” on page 46
You use this field-level keyword to specify the color or display attributes to be used when the system
is displaying the available choices in a menu bar, push button, selection field, or subfile single-choice
or multiple-choice selection list.
“CHCSLT (Choice Color/Display Attribute when Selected) keyword for display files” on page 50
You use this field-level keyword to specify the color or display attributes to be used when the system
is displaying a selected choice in a menu bar or selection field.
“CHCUNAVAIL (Choice Color/Display Attribute when Unavailable) keyword for display files” on
page 52
You use this field-level keyword to specify the color or display attributes to be used when the system
displays the unavailable choices in a selection field or a push button field.
“DSPATR (Display Attribute) keyword for display files” on page 86
You use this field-level keyword to specify one or more display attributes for the field that you are
defining.
“ENTFLDATR (Entry Field Attribute) keyword for display files” on page 112
You use this field-level, record-level, or file-level keyword to define that the leading attribute of the
field changes to a specified attribute whenever the cursor is located in the field.
“ERRMSG (Error Message) and ERRMSGID (Error Message Identifier) keywords for display files” on
page 115
You can use one of these field-level keywords to identify a message that is displayed on the message
line and that is associated with that field.
“MNUBARSEP (Menu-Bar Separator) keyword for display files” on page 159
You use this field-level keyword on a menu-bar field to specify the color, display attributes, or the
character that is used to form the menu-bar separator line.
76
System i: Programming DDS for display files
“WDWBORDER (Window Border) keyword for display files” on page 250
You use this file-level or record-level keyword to specify the color, display attributes, and characters
used to form the border of a window.
COMP (Comparison) keyword for display files
You use this field-level keyword to specify that the i5/OS operating system is to compare the data that
the workstation user types into an input or input/output field with the specified value.
The relational operator is the criterion for the comparison. If the data typed in this field fails this validity
check, the i5/OS operating system displays an error message. Note that the i5/OS operating system
performs this checking only if the field is changed by the workstation user or if its modified data tag
(MDT) is set on using DSPATR(MDT).
Note: See “CHKMSGID (Check Message Identifier) keyword for display files” on page 65 for information
about defining user-specified error messages.
The format of the keyword is:
COMP(relational-operator value)
You can specify only one operation for the COMP keyword and only one COMP keyword for a field.
The valid entries for the relational operator are:
Relational operator
Meaning
EQ
Equal
NE
Not equal
LT
Less than
NL
Not less than
GT
Greater than
NG
Not greater than
LE
Less than or equal
GE
Greater than or equal
The specified value must be either numeric or character, depending on the data type (decimal positions
entry). Numeric values are expressed by the digits 0 through 9 and a leading sign (+ or -). Character
values must be enclosed in single quotation marks.
Note: If the field you are defining is numeric, alignment is based on the decimal positions specified (in
positions 36 and 37), and leading and trailing blanks are filled with zeros. If no decimal point is
typed in, the decimal point is assumed to be to the right of the last (farthest right) digit. For
example, for a numeric field with a length of 5 (specified in position 34) and 2 decimal positions
(specified in position 37), 1.2 is interpreted as 001.20, and 100 is interpreted as 100.00.
You cannot specify the COMP keyword on a floating-point field (F in position 35).
Option indicators are not valid for this keyword.
Example
The following example shows how to specify the COMP keyword.
DDS for display files
77
|...+....1....+....2....+....3....+....4....+....5....+....6....+....7....+....8
00010A
FIELD2
6 OI 10 10COMP(EQ +021920)
00020A
FIELD1
3
I 11 11COMP(EQ 'ABC')
A
Related reference
“CMP (Comparison) keyword for display files” on page 71
This keyword is equivalent to the COMP keyword.
CSRINPONLY (Cursor Movement to Input-Capable Positions Only)
keyword for display files
You use this file-level or record-level keyword to restrict cursor movement to input-capable positions
only. This keyword only affects cursor movement caused by using the arrow keys.
This keyword has no parameters.
You should take care when defining help when this keyword is in effect. The user might not be able to
position the cursor in the area where help is valid.
See the Application Display Programming book
keyword.
for more information about the CSRINPONLY
Option indicators are valid for this keyword.
Example
The following example shows how to specify the CSRINPONLY keyword.
|...+....1....+....2....+....3....+....4....+....5....+....6....+....7....+....8
A
CSRINPONLY
A
R RECORD1
A
1 10'ONE--:'
A
FIELD1
10A I 1 20TEXT('ONE')
A
2 10'TWO--:'
A
FIELD2
10A I 2 20TEXT('TWO')
A
3 10'THREE--:'
A
FIELD3
10A I 3 20TEXT('THREE')
A
4 10'FOUR--:'
A
FIELD4
10A I 4 20TEXT('FOUR')
A
5 10'OUT--:'
A
FIELD5
10A O 5 20TEXT('OUT')
A
This example shows RECORD1 is defined with input, output, and constant fields. Because CSRINPONLY
is specified, the user will only be able to position the cursor in either FIELD1, FIELD2, FIELD3, or
FIELD4. FIELD5 and all other areas of the display are not accessible by the cursor.
CSRLOC (Cursor Location) keyword for display files
You use this record-level keyword to specify the cursor location on an output operation to the record
format that you are defining. Your program sends the output operation after setting the cursor location.
The format of the keyword is:
CSRLOC(field-name-1 field-name-2)
The parameter values on the keyword specify the names of two fields whose contents are the line
number (for field-name-1) and the position number (for field-name-2) of the cursor location. Field-name-1
and field-name-2 are 3-byte, zoned decimal, hidden fields. Your program uses these fields to tell the
i5/OS operating system where to locate the cursor.
78
System i: Programming DDS for display files
The cursor is not positioned to the required location on an output operation that leaves the keyboard
locked. The cursor does not move to the required position until your program sends an input or an
output operation that unlocks the keyboard. If your program sets the cursor location fields to values
outside the range of values valid for the display device, this keyword is ignored.
For any one output operation, the CSRLOC keyword overrides any other cursor location specifications,
such as DSPATR(PC) and SFLRCDNBR(CURSOR), that are in effect. This keyword is in effect until your
program sends another output operation with DSPATR(PC), CSRLOC, or SFLRCDNBR(CURSOR) in effect
or until the record in which this keyword is specified is overlaid (OVERLAY keyword) or erased (ERASE
keyword), whichever comes first.
On an input operation, the cursor location can be determined by looking at the I/O feedback area or
specifying the appropriate parameter on the RTNCSRLOC keyword. See the Application Display
Programming book
for more information about the I/O feedback area.
Specify the CSRLOC keyword only once per record format.
The CSRLOC keyword is not valid for the following record formats:
v Subfile record formats (identified by the SFL keyword)
v User-defined record formats (identified by the USRDFN keyword)
Option indicators are valid for this keyword. Display size condition names are not valid.
Example
The following example shows how to specify the CSRLOC keyword.
|...+....1....+....2....+....3....+....4....+....5....+....6....+....7....+....8
00010A
R RECORD1
CSRLOC(LINNBR POSNBR)
00020A
TITLE
40
B 1 2
00030A
PAGE
5Y OB 1 60
00040A
TEXT
1760
B 2 1
00050A
LINNBR
3 OH
00060A
POSNBR
3 OH
A
The application program sets the contents of LINNBR and POSNBR before issuing an output operation to
RECORD1. When the record is displayed, the fields Title, Page, and Text appear on the display. The cursor
can be at some location in a field of RECORD1 where the workstation user is to make changes.
DATE (Date) keyword for display files
You use this field-level keyword to display the current date as a constant (output-only) field.
You can specify the location of the field, the DATE keyword, and, optionally, EDTCDE , EDTWRD,
COLOR, DSPATR, or TEXT keywords. Positions 17 through 38 must be blank.
The format of the keyword is:
DATE([*JOB|*SYS] [*Y|*YY])
The *JOB value causes the current job date to be displayed. If you do not specify a parameter, the
parameter is set to *JOB as default. The *SYS parameter displays the current system date.
If you specify *Y, 2 digits are used to represent the year in the date format that the job attribute DATFMT
designates. If you specify *YY, 4 digits are used to represent the year in the date format that the job
attribute DATFMT designates. If you do not specify a parameter, the parameter is set to *Y as default.
DDS for display files
79
The W edit code on the EDTCDE keyword returns a correctly formatted date only if a four digit year
(*YY) is requested, and the job attribute DATFMT is YMD.
If you specify EDTCDE(Y) on a field with the DATE keyword, separators are added according to the date
format that the DATFMT job attribute designates. For example, using EDTCDE(Y) when the DATFMT job
attribute specifies *MDY changes the date from
mmddyy
to
mm/dd/yy.
The date separator is retrieved from the job attribute DATSEP at run time, and the job attribute DATFMT
determines the order of the month, day, and year. (DATFMT can be MDY, DMY, YMD, or JUL, where
M=month, D=day, Y=year, and JUL=Julian. DATSEP can be a slash (/), dash (-), period (.), or comma (,).)
The field length is dependent on the following conditions:
1. The format that the DATFMT job attribute specifies.
2. Whether the date field includes separators. The EDTCDE(Y) keyword controls separators.
3. The number of digits used to represent the year. The *Y and *YY parameters on the DATE keyword
control the number of year digits.
Option indicators are not valid for this keyword, although option indicators can be used to condition the
field on which it is specified.
Example
The following example shows how to specify the DATE keyword.
|...+....1....+....2....+....3....+....4....+....5....+....6....+....7....+....8
00010A 20
1 56DATE(*SYS)
00020A 21
1 56DATE(*Y) EDTCDE(Y)
A
Option indicator 20 causes the system date to be displayed without editing if it is on. Dates with 2 digit
years are displayed with editing if option indicator 20 is off and option indicator 21 is on.
DATFMT (Date Format) keyword for display files
You use this field-level keyword to specify the format of a date field. This keyword is valid only for date
fields (data type L).
The format of the keyword is:
DATFMT(date-format)
The date-format parameter specifies date formats. The following table describes the valid date formats
and their default separator values.
Format name
Date-format
parameter
Date format and
separator
Field length
Example
Job default
*JOB
Month/Day/Year
*MDY
mm/dd/yy
8
06/21/90
Day/Month/Year
*DMY
dd/mm/yy
8
21/06/90
Year/Month/Day
*YMD
yy/mm/dd
8
90/06/21
Julian
*JUL
yy/ddd
6
90/172
80
System i: Programming DDS for display files
Format name
Date-format
parameter
Date format and
separator
Field length
Example
International
Standards
Organization
*ISO
yyyy-mm-dd
10
1990-06-21
IBM USA Standard
*USA
mm/dd/yyyy
10
06/21/1990
IBM European
Standard
*EUR
dd.mm.yyyy
10
21.06.1990
Japanese Industrial
Standard Christian
Era
*JIS
yyyy-mm-dd
10
1990-06-21
If you do not specify the DATFMT keyword, the default is *ISO.
If you specify *JOB, the high level language and the application handle the format as *ISO. On output,
the system converts the format to the format specified by the Date Format Job Definition Attribute. On
input, the system converts the format to *ISO before it passes control to the application. There are always
10 spaces reserved on the display screen for a Date field with DATFMT(*JOB), even though 8 characters
in the case of *MDY, *DMY, and *YMD, or 6 characters in the case of *JUL are displayed.
The format of DFT, DFTVAL, and MAPVAL keyword values must match the format that the DATFMT
keyword specifies. If the DATFMT keyword specifies *JOB or the DATFMT keyword is set to *ISO as
default, these values must have a format of *ISO.
If you specify the *ISO, *USA, *EUR, or *JIS value, you cannot specify the DAT keyword. These date
formats have fixed separators.
The DATFMT keyword overrides the job attribute for a date field. It does not change the system default.
It is the responsibility of the high-level language and the application to format the date field according to
the format specified on the DATFMT keyword and use the separators specified on the DATSEP keyword.
The system does not format fields on output. The system validates the date field (L data type) on input
according to the format the DATFMT keyword specifies and the separator that the DATSEP keyword
specifies.
Option indicators are not valid for this keyword, although option indicators can be used to condition the
field for which it is specified.
Example
The following example shows how to specify the DATFMT keyword.
|...+....1....+....2....+....3....+....4....+....5....+....6....+....7....+....8
00010A
00020A
R RECORD
00030A
DATFLD1
L B 5 2DATFMT(*JUL)
00040A
DATFLD2
L B 5 22DATFMT(*EUR)
00050A
DATFLD3
L B 5 42DATFMT(*JOB)
A
If the date to be displayed is June 21, 1990, the date format defined in the Job Definition Attributes is
*MDY and the date separator defined in the Job Definition Attributes is a slash (/), the following values
are displayed when RECORD is written.
DATFLD1
DATFLD2
DATFLD3
90/172
21.06.1990
06/21/90
DDS for display files
81
DATSEP (Date Separator) keyword for display files
You use this field-level keyword to specify the separator character for a date field. This keyword is valid
only for date fields (data type L).
The format of the keyword is:
DATSEP(*JOB | 'date-separator')
The date separator parameter specifies the separator character that appears between the year, month, and
day. Valid values are a slash (/), dash (–), period (.), comma (,) or blank ( ). Single quotation marks must
enclose the parameter.
If you specify the *ISO, *USA, *EUR, or *JIS date format value for the DATFMT keyword, you should not
specify the DATSEP keyword. These formats have fixed date separators.
If you do not specify the DATSEP keyword and the format that is specified for DATFMT does not have a
fixed date separator, DATSEP is set to *JOB as the default.
If you specify *JOB or if DATSEP is set to *JOB as the default, the high-level language and the application
handle the separator as a slash (/). On output, the system converts the separator that was specified by
the Date Separator Job Definition Attribute. The system converts the separator to a slash (/), as soon as
the system receives the separator, before passing control to the application.
The separator for DFT, DFTVAL, and MAPVAL keyword values must match the separator the DATSEP
keyword specifies. If the DATSEP keyword specifies *JOB or the DATSEP keyword is set to *JOB as
default, these values must have a format of a slash (/).
The DATSEP keyword overrides the job attribute. It does not change the system default.
It is the responsibility of the high-level language and the application to format the date field according to
the format specified for the DATFMT keyword and use the separators specified for the DATSEP keyword.
The system does format fields on output. The system validates the date field on input according to the
format that the DATFMT keyword specifies and the separator that the DATSEP keyword specifies.
Option indicators are not valid for this keyword, although option indicators can be used to condition the
field for which it is specified.
Example
The following example shows how to specify the DATSEP keyword.
|...+....1....+....2....+....3....+....4....+....5....+....6....+....7....+....8
00010A
00020A
R RECORD1
00030A
DATFLD2
L B 5 2DATFMT(*DMY) DATSEP('-')
00040A
DATFLD4
L B 5 22DATFMT(*JUL) DATSEP(' ')
00050A
DATFLD6
L B 5 42DATFMT(*JOB) DATSEP(*JOB)
A
If you want to display the date June 21, 1990, the date format defined in the Job Definition Attributes is
*MDY and the date separator defined in the Job Definition Attributes is a slash (/), the following values
will be displayed when RECORD1 is written.
DATFLD2
DATFLD4
DATFLD6
82
21-06-90
90 172
06/21/90
System i: Programming DDS for display files
DFT (Default) keyword for display files
You use this field-level keyword to specify the constant value for constant fields (unnamed fields) and to
specify a default value for named fields.
The format of the keyword is:
DFT('value') | 'value'
The maximum number of characters you can specify in the literal is set by the size of the display on
which the field is to be displayed as follows:
Size of display
Maximum characters
24 x 80
1919
27 x 132
3563
Constant fields
The value of a constant field can be specified as a value enclosed by single quotation marks. (For other
ways to specify a constant field, see the DATE, MSGCON, and TIME keywords.) You can omit the DFT
keyword itself, as well as the parentheses, to simplify the DDS. Whether you specify the DFT keyword
explicitly or implicitly, the i5/OS operating system displays the specified value as a constant field on the
display. See “Name for display files (positions 19 through 28)” on page 7 for a description of constant
fields.
Named fields
For input-only fields, the specified value is displayed each time the field is displayed. The displayed
value can then be changed by the workstation user and returned to your program.
For output-only and input/output fields, you must also specify PUTOVR at the record level and
OVRDTA at the field level with the DFT keyword. The specified value is displayed only on the first
output operation. On subsequent output operations, the program value is displayed.
The DFTVAL, EDTCDE, and EDTWRD keywords cannot be specified with the DFT keyword.
The DFT keyword is not valid on floating point fields.
Option indicators are not valid for this keyword, although option indicators can be used to condition the
field (whether constant or named) on which it is specified.
Example 1
The following example shows how to specify the DFT keyword.
|...+....1....+....2....+....3....+....4....+....5....+....6....+....7....+....8
00030A
HOTTYP
1
I 7 9DFT('D')
00040A
VALUES('D' 'S')
00050A
8 9'ON'
00060A
01
12 1'HOTEL NAME: 'TERRACE INN'
00070A
TEXT('Constant field is +
00080A
conditioned, not the implicit +
00090A
DFT keyword')
00100A
02
12 1'HOTEL NAME: 'RIVER VIEW INN'
DDS for display files
83
00110A
00120A
00130A
A
TEXT('Either 'TERRACE INN' or +
'RIVER VIEW INN' could +
appear in line 12, position 1')
The constant field ON, having no option indicators, is always displayed.
If indicator 01 is on, the following information is displayed:
HOTEL NAME:
'TERRACE INN'
If indicator 02 is on and indicator 01 is off, the following information is displayed:
HOTEL NAME:
'RIVER VIEW INN'
Example 2
If you are specifying a constant field for more than one display size, and you are changing the location of
the field but not the contents of the field for the different display sizes, then do not repeat the value. The
following example shows how to do this.
|...+....1....+....2....+....3....+....4....+....5....+....6....+....7....+....8
00010A
DSPSIZ(*DS3 *DS4)
A
:
A
:
00080A
22 2'Constant data'
00090A
26 2
A
The constant field Constant data appears on line 22, position 2, on the 24 x 80 display screen, and it
appears on line 26, position 2, on the 27 x 132 display.
Related reference
“PUTOVR (Put with Explicit Override) keyword for display files” on page 184
You use this record-level keyword to enable the override of either display attributes or data contents
(or both) of specific fields within a record that is displayed on a workstation device. By using the
PUTOVR keyword, you can reduce the amount of data sent to the display device.
DFTVAL (Default Value) keyword for display files
You use this field-level keyword to specify a default value for an output-capable field.
On the first output operation, the specified value is displayed if the option indicator is on or has not been
specified. Otherwise, the program value is used. On subsequent output operations, the program value
appears.
The format of the keyword is:
DFTVAL('value')
This keyword is valid on output-only (O) or output-input (B) fields.
You can only use this keyword to initialize named fields. It is not allowed on constant fields.
Since the maximum number of characters on a DDS statement is 5000, this keyword, along with any
other keywords specified on the DDS statement, must contain less than 5000 characters.
You cannot use this keyword in a subfile format (SFL keyword).
You cannot specify the DFTVAL keyword on the same field with a DFT, EDTCDE (Edit Code), or
EDTWRD (Edit Word) keyword, or on a floating-point field.
84
System i: Programming DDS for display files
Option indicators are valid for this keyword.
Example
The following example shows how to specify the DFTVAL keyword.
|...+....1....+....2....+....3....+....4....+....5....+....6....+....7....+....8
A
R RECORD1
A 50
PUTOVR
A
FIELD1
3A B 12 01DFTVAL('AAA') OVRDTA
A
FIELD2
3D 0O 12 05OVRDTA
A 10
DFTVAL('000')
A
FIELD3
3D 0O 12 09DFTVAL('000') OVRDTA
A
In this example, before displaying the record, the application program assigns ZZZ to FIELD1, 999 to
FIELD2, and 456 to FIELD3. On the first output operation, AAA 000 000 displays if indicator 10 is on;
AAA 999 000 displays if indicator 10 is off.
The workstation user types XXX into FIELD1. On the second output operation, XXX 999 456 displays if
indicator 50 is on; AAA 000 000 displays if indicator 50 is off and indicator 10 was on during the first
output operation. AAA 999 000 displays if indicator 50 is off and indicator 10 was off during the first
output operation.
DLTCHK (Delete Check) keyword for display files
You use this field-level keyword to specify that the i5/OS operating system is to ignore all validity
checking and CHKMSGID keywords that are specified for a referenced field.
This keyword is valid only when R is specified in position 29.
This keyword has no parameters.
If you specify any new validity checking keywords, DLTCHK is unnecessary. The new validity checking
keywords override the referenced validity checking keywords.
Option indicators are not valid for this keyword.
Example
The following example shows how to specify the DLTCHK keyword.
|...+....1....+....2....+....3....+....4....+....5....+....6....+....7....+....8
00030A
REF(FILE)
00040A
R RECORD
00050A
CODE
R
I 3 20DLTCHK
A
DLTEDT (Delete Edit) keyword for display files
You use this field-level keyword to specify that the i5/OS operating system is to ignore the EDTCDE or
EDTWRD keyword if either of them is specified for a referenced field. This keyword is valid only when
you specify R in position 29.
This keyword has no parameters.
If you specify a new editing keyword, DLTEDT is unnecessary. The new editing keyword overrides the
referenced editing keyword.
Option indicators are not valid for this keyword.
DDS for display files
85
Example
The following example shows how to specify the DLTEDT keyword.
|...+....1....+....2....+....3....+....4....+....5....+....6....+....7....+....8
00040A
REF(FILEA)
00050A
R RECORD
00060A
AMT
R
B 5 20DLTEDT
A
DSPATR (Display Attribute) keyword for display files
You use this field-level keyword to specify one or more display attributes for the field that you are
defining.
You can specify the DSPATR keyword more than once for the same field, and you can specify more than
one attribute for the same keyword. However, each attribute (for example, UL), can be specified only
once per field.
Note: The effects of attributes might not appear on the display, depending on the hardware or software
emulator that you are using.
The format for the keyword is
DSPATR(attribute-1 [attribute-2 [attribute-3 [...]]])
or
DSPATR(&program-to-system-field);
If you specify more than one attribute for the same field, whether in one keyword or in separate
keywords, each attribute that is specified (and in effect when the field is displayed) affects the field. For
example, if you want a field to be displayed with its image reversed and with high intensity, specify
either DSPATR (RI HI), or DSPATR(RI), and DSPATR(HI).
The program-to-system-field parameter is required and specifies that the named field must be defined in
the record format, alphanumeric (A in position 35), length of one, and usage P (P in position 38). The
program uses this P-field to set the display attribute for the field this DSPATR keyword applies to.
The name P-field is used for multiple fields with the record being defined. One DSPATR P-field is
allowed per field. The P-field contains the display attribute and identifies whether the field should be
protected. See Valid P-field values.
Valid attributes for the first format of the DSPATR keyword
The following list shows valid attributes for the first format of the DSPATR keyword:
v For all fields
Display attribute
Meaning
BL
Blinking field
CS
Column separator
HI
High intensity
ND
Nondisplay
PC
Position cursor
RI
Reverse image
UL
Underline
v For Input-Capable fields only
86
System i: Programming DDS for display files
Display attribute
Meaning
MDT
Set changed data tag when displayed
OID
Operator identification
PR
Protect contents of field from input typing
SP
Select by light pen
Notes:
1. If you specify the UL, HI, and RI attributes on the 5250 display station for the same field, the
result is the same as if you had specified ND.
2. If OID is specified, then SP™ should not be specified. Neither OID nor SP can be optioned
unless specified with another display attribute.
3. Display attributes BL, CS, HI, RI, and UL can also be specified at the file, record, or field level
as parameter values on the CHGINPDFT keyword.
4. Display attributes CS, HI, and BL can cause fields on the 5292, 3477 Model FC, 3487 Model
HC, 3179, 3197 Model C1 and C2, and 34885 color display stations to appear as color fields.
5. If you are using an IBM Personal System/2 (PS/2) computer that is emulating a 5250 display
station and you are directly changing the EBCDIC screen buffer, you need to set the MDT
attribute. See the IBM Personal Computer Enhanced 5250 Emulation Program Technical Reference
manual for additional information.
6. If you are using a PS/2 computer and VGA monitor, the UL attribute does not work due to
hardware specific limitations in the way buffers are used.
Option indicators are valid for this keyword, except when the attributes OID or SP are the only display
attributes specified.
Detailed descriptions of each of the attributes follow the coding example and sample display are
provided in the following figure.
5. Dependent on the monitor attached to the display device.
DDS for display files
87
Figure 14. A 5-byte field displayed with various display attributes
Display attributes for all fields
The following list shows attributes for all fields:
BL (Blink)
Use this attribute to specify that the field is to blink when it is displayed.
CS (Column separator)
Use this attribute to specify that each position of the field is to be displayed with a vertical bar at
its left and right edge. When specified for a nondisplay field, the separators are displayed even
though there are no characters between them. You can use column separators to precisely indicate
cursor positioning within a field and to indicate the length of an otherwise blank field.
HI (High intensity)
Use this attribute to specify that the field is to be intensified (highlighted) when it is displayed on
the display.
ND (Nondisplay)
Use this attribute to specify that the field is not to be displayed; the display positions for this
field appear blank. The attribute can be used for passwords or other security-sensitive data. If the
print function (permitted by specifying the PRINT keyword) is performed, nondisplay fields are
not printed.
PC (Position cursor)
Use this attribute to position the cursor to the first character position of the field you are
88
System i: Programming DDS for display files
defining. You can specify this attribute for several fields, and the cursor will be positioned at the
first selected field with this attribute. Note that the fields within a record are ordered in
line/position sequence as they appear on the display and not necessarily in the order you specify
them.
RI (Reverse image)
Use this attribute to specify that the image of the field is to be reversed from the other portion of
the screen when it is displayed. Whether the screen is light-on-dark or dark-on-light depends on
the status of the display before the field is displayed. This setting is controlled by the workstation
user.
UL (Underline)
Use this attribute to specify that the field is to be underlined when it is displayed. All
input-capable fields are underlined by default. Use the CHGINPDFT keyword to prevent the
default underlining. (If CHGINPDFT is specified, DSPATR(UL) must be specified to underline an
input-capable field.) If DSPATR(UL) is specified with option indicators and the option indicators
are not satisfied (DSPATR(UL) is not selected), the field appears without underline.
Display attributes for input-capable fields
The following list shows attributes for input-capable fields:
MDT (Set changed data tag)
Use this attribute to specify that the i5/OS operating system is to set on the changed data tag
(MDT) for the field you are defining when the field is written to the display. The attribute
ensures that the field is sent from the device when the record is read from the display.
Note: The i5/OS program saves output data for input/output fields or initialized data for fields
with the DFT keyword specified. This causes the saved data to be returned on an input
operation if no new (changed) data is entered into the field.
OID (Operator Identification)
Use this attribute to specify that the i5/OS operating system is to allow magnetic stripe reader
OID data to be entered into this field. If it is to be a nondisplay field also, the DSPATR(ND)
attribute must be specified.
A field with the DSPATR(OID) keyword functions like any other input-capable field; data can be
entered from either the keyboard or the magnetic stripe reader. The DSPATR(OID) keyword can
be specified (but is not required) to indicate that data can be entered using a magnetic stripe
reader. You can type into the field unless the keyboard shift Inhibit Keyboard Entry (I) is
specified. If both DSPATR(OID) and DSPATR(SP) are specified on the same field, DSPATR(SP) is
ignored.
PR (Protect)
Use this attribute to specify that the workstation user cannot type into the input-capable field that
you are defining. This attribute is valid for input-capable fields only. Output-only fields and
constant fields are protected by definition.
SP (Select by light pen)
Use this attribute to specify that this input-capable field can be selected by a light pen. The
workstation user can type in a light pen field unless an I (Inhibit Keyboard Entry) has been
specified in position 35 (Data Type/Keyboard Shift) for the field.
When the field is first displayed, the contents of the field are set by your program (input/output
field) or in the DDS (input-only field with DFT keyword or character string). If no new data is
typed in by the workstation user, this output data is returned to your program on an input
operation.
DDS for display files
89
A field that can be selected by a light pen should be at least 3 bytes long. The recommended
contents of this field are:
v A switch character, either hex 6F (?) or, if the workstation user selects the field by a light pen,
hex 6E (>)
v A blank (hex 40)
v A target character, which can be any character, such as an asterisk (*)
v Another blank
v Additional data to identify the field to the workstation user (1 or more characters)
This attribute is useful only for workstations with a light pen feature for selecting.
Valid P-field values
The DSPATR P-field does not support the following display attributes:
Display attribute
Meaning
MDT
Set changed data tag when displayed
OID
Operator identification
PC
Position cursor
SP
Select by light pen
Valid P-field values (nonprotect)
Hex
20
21
22
23
24
25
26
27
28
29
2A
2B
2C
2D
2E
2F
30
31
32
33
34
35
36
37
90
Limited color
Normal
Reverse image
High intensity
High intensity, reverse image
Underscore
Underscore, reverse image
Underscore, high intensity
Nondisplay
Blink
Blink, reverse image
Blink, high intensity
Blink, high intensity, reverse image
Blink, underscore
Blink, underscore, reverse image
Blink, underscore, high intensity
Nondisplay
Column separator
Reverse image, column separator
Full color
Green
Green, reverse image
White
White, reverse image
Green, underscore
Green, underscore, reverse image
White, underscore
Nondisplay
Red
Red, reverse image
Red, high intensity
Red, high intensity, reverse image
Red, underscore
Red, underscore, reverse image
Red, underscore, blink
Nondisplay
Turquoise, column separator
Turquoise, column separator, reverse
image
High intensity, column separator
Yellow, column separator
High intensity, reverse image, column White, reverse image, column
separator
separator
Underscore, column separator
Turquoise, underscore, column
separator
Underscore, reverse image, column
Turquoise, underscore, reverse image,
separator
column separator
Underscore, high intensity, column
Yellow, underscore, column separator
separator
Nondisplay
Nondisplay
System i: Programming DDS for display files
Hex
38
39
3A
3B
3C
3D
3E
3F
Limited color
Blink, column separator
Blink, reverse image, column
separator
Blink, high intensity, column
separator
Blink, high intensity, reverse image,
column separator
Blink, underscore, column separator
Blink, underscore, reverse image,
column separator
Blink, underscore, high intensity,
column separator
Nondisplay
Full color
Pink
Pink, reverse image
Blue
Blue, reverse image
Pink, underscore
Pink, underscore, reverse image
Blue, underscore
Nondisplay
Valid P-field values (protect)
Table 5. P-field values (protect)
Hex
A0
A1
A2
A3
A4
A5
A6
A7
A8
A9
AA
AB
AC
AD
AE
AF
B0
B1
B2
B3
B4
B5
B6
B7
B8
B9
BA
BB
BC
Limited color
Normal
Reverse image
High intensity
High intensity, reverse image
Underscore
Underscore, reverse image
Underscore, high intensity
Nondisplay
Blink
Blink, reverse image
Blink, high intensity
Blink, high intensity, reverse image
Blink, underscore
Blink, underscore, reverse image
Blink, underscore, high intensity
Nondisplay
Column separator
Reverse image, column separator
Full color
Green
Green, reverse image
White
White, reverse image
Green, underscore
Green, underscore, reverse image
White, underscore
Nondisplay
Red
Red, reverse image
Red, high intensity
Red, high intensity, reverse image
Red, underscore
Red, underscore, reverse image
Red, underscore, blink
Nondisplay
Turquoise, column separator
Turquoise, column separator, reverse
image
High intensity, column separator
Yellow, column separator
High intensity, reverse image, column White, reverse image, column
separator
separator
Underscore, column separator
Turquoise, underscore, column
separator
Underscore, reverse image, column
Turquoise, underscore, reverse image,
separator
column separator
Underscore, high intensity, column
Yellow, underscore, column separator
separator
Nondisplay
Nondisplay
Blink, column separator
Pink
Blink, reverse image, column
Pink, reverse image
separator
Blink, high intensity, column
Blue
separator
Blink, high intensity, reverse image,
Blue, reverse image
column separator
Blink, underscore, column separator
Pink, underscore
DDS for display files
91
Table 5. P-field values (protect) (continued)
Hex
Limited color
BD
Blink, underscore, reverse image,
column separator
BE
Blink, underscore, high intensity,
column separator
BF
Nondisplay
Full color
Pink, underscore, reverse image
Blue, underscore
Nondisplay
Example 1
The following example shows how to specify the DSPATR(SP) keyword with an input-only field
(showing the recommended data contents as a character string).
|...+....1....+....2....+....3....+....4....+....5....+....6....+....7....+....8
00110A
SPFLD
50I I 5 4'? * OPTION 1'
00120A
DSPATR(SP)
A
No data can be typed into field SPFLD. When the field is selected with the light pen, the data returned in
field SPFLD will be: >_*_OPTION_1, where _ represents a blank.
Example 2
The following example shows that when the workstation user selects a field with the light pen, both the
MDT bit and the first character of that field are changed. When the field is selected, the MDT bit is set
on, changing the first character of the field to >. If the same field is selected again, the MDT bit is set off
and the first character becomes ?.
By specifying a switch character, your program prevents the first character of data from being changed to
> or ? when the field is selected by the light pen. If the MDT bit is on when your program sends an
input operation to the record format, the contents of the field are returned to your program as a
user-changed field.
If you use DSPATR(MDT) to set on the MDT of a field that can be selected by the light pen, then you
should either omit the MDTOFF keyword from other record formats, or read that field before displaying
any record format with MDTOFF in effect.
|...+....1....+....2....+....3....+....4....+....5....+....6....+....7....+....8
00010A
R LIGHTPEN
00020A
FLD1
10
I 5 2'> * $12.50'
00030A
DSPATR(SP MDT)
00040A*
00050A
R RCD2
OVERLAY MDTOFF
00060A
FLD1
10
B 11 2
A
If the program displays LIGHTPEN, then displays RCD2, then reads LIGHTPEN, and the workstation
user does not select FLD1 with the light pen, the MDT of FLD1 is turned off by the display of RCD2.
Also, the switch character of FLD1 is returned as ?, even though the field was not selected, and the
switch character appears as >. The MDT and the switch character are in opposing states.
Example 3
The following example shows how to specify the DSPATR keyword with P-field usage:
|...+....1....+....2....+....3....+....4....+....5....+....6....+....7....+....8
A
R RECORD
A
FLD1
5A
2 6DSPATR(&PFLD1)
92
System i: Programming DDS for display files
A
A
A
A
FLD2
PFLD1
PFLD2
5A
1A
1A
2
6DSPATR(&PFLD2)
P
P
Related reference
“COLOR (Color) keyword for display files” on page 73
You use this keyword to specify the color of a field on a color display.
DSPMOD (Display Mode) keyword for display files
You use this record-level keyword to specify which mode (display size) you want to use for the 3180, the
3477, or the 3197 Model D1, D2, W1, or W2 display station.
*DS3 (24 x 80) and *DS4 (27 x 132) are both supported for the 3180, 3477, 3487 Models HA, HC, HG, and
HW, 3488, and the 3197 Model D1, D2, W1, or W2 display stations.
The format of the keyword is:
DSPMOD(condition-name)
This keyword is valid only when both the 24 x 80 and 27 x 132 display sizes are specified on the DSPSIZ
keyword. The first of the two display sizes specified on the DSPSIZ keyword is the default display mode.
The record is displayed using this mode unless the DSPMOD keyword indicates that the second specified
display size should be used.
Note: This keyword is a runtime keyword and not a compile-time keyword.
You can specify the default display size with this keyword only if you do not specify option indicators
for this keyword.
The capability to display in the 27 x 132 mode is allowed only on a 3180-2 or a 3197 Model D1, D2, W1,
or W2 device attached locally to a 6040 or 6140 controller or remotely to a 5294 or 5394 controller. The
DSPMOD keyword is ignored unless these controllers are used.
When a record with DSPMOD causes the mode to be changed, all records currently on the display are
deleted. The record with DSPMOD active is then sent to the display. The mode for this record is
maintained on the display as long as the DSPMOD keyword is active. Setting DSPMOD off or writing to
another record without DSPMOD causes the display mode to be placed back in the primary display size
for the device.
The following keywords are ignored if the display modes have changed:
ALWROL
ASSUME
CLRL
ERASEINP/INZINP
ERRMSG
ERRMSGID
KEEP
OVERLAY
PROTECT
PUTOVR
PUTRETAIN
SFLMSG
SFLMSGID
When you create a file specifying any of the above keywords and DSPMOD on the same record, a
warning message results at create-time. However, a diagnostic message is not issued during processing.
This keyword is not valid for user-defined records (USRDFN keyword).
The DSPMOD keyword cannot be specified on a subfile record (SFL keyword). The subfile is be
displayed according to the DSPMOD of the corresponding subfile control record.
DDS for display files
93
Option indicators are valid for this keyword. If the option indicator is on at the time of processing, the
display mode you have chosen will be used to display the record. However, if the option indicator is off
at the time of processing, the default display mode will be used.
Note: Switching display modes is similar to displaying a record without OVERLAY.
Example 1
The following example shows how to specify the DSPMOD keyword.
|...+....1....+....2....+....3....+....4....+....5....+....6....+....7....+....8
A
DSPSIZ(*DS3 *DS4)
A
R RECORD1
DSPMOD(*DSP4)
A
R RECORD2
A
R RECORD3
A 03
DSPMOD(*DS4)
A
The DSPMOD keyword gives the following results:
v If you write RECORD1, RECORD1 is displayed in *DS4 mode.
v If you write RECORD2, the display is cleared and RECORD2 is displayed in *DS3 mode.
v If you write RECORD3 with indicator 03 off, RECORD3 is displayed in *DS3 mode. RECORD2 remains
on the display.
v If you write RECORD3 with indicator 03 on, the display is cleared and RECORD3 is displayed in *DS4
mode.
Example 2
|...+....1....+....2....+....3....+....4....+....5....+....6....+....7....+....8
A
DSPSIZ(24 80 *NORM +
A
27 132 *WIDE)
A
R RECORD1
A 03
DSPMOD(*WIDE)
A
DSPRL (Display Right to Left) keyword for display files
You use this file-level keyword to specify that the records in the display file are written right to left on
the display.
This keyword has no parameters.
Option indicators are not valid for this keyword.
This keyword can only be used on a bidirectional device.
Example
The following example shows how to specify the DSPRL keyword.
|...+....1....+....2....+....3....+....4....+....5....+....6....+....7....+....8
A
DSPRL
A
R RECORD
A
FIELD1
20A
5 5')emaN remotsuC('
A
DSPSIZ (Display Size) keyword for display files
You use this file-level keyword to specify the display size to which your program can open the display
file.
94
System i: Programming DDS for display files
The formats of the keyword are:
DSPSIZ(*DSw [*DSx])
DSPSIZ(lines positions[condition-name-1][lines positions[condition-name-2]])
The DSPSIZ keyword is optional. If you do not specify it for a display file, the display file can be opened
only to display devices with a 24 x 80 display size. You can specify this keyword in one of two ways:
v Using IBM-supplied display size condition names. Specify up to two parameter values as *DS3 or *DS4
in any order. At least one parameter value is required. You cannot specify a parameter value twice.
v Specifying lines and positions to permit user-defined display size condition names. Instead of the
IBM-supplied display size condition names, specify the display size in lines and positions (only 24 x
80, and 27 x 132 are valid). (See examples 1, 2, and 3, in this topic.)
Optionally, you can also define a display size condition name other than *DS3 or *DS4. The display
size condition name you define must be from 2 to 8 characters long, and the first character must be an
asterisk (*). You can specify these user-defined condition names in positions 7 through 16
(conditioning) on subsequent DDS statements at the field level. (See example 2, in this topic.) If you do
not specify user-defined display size condition names, you must use IBM-supplied display size
condition names to condition the location of fields.
If you specify more than one parameter value, see Primary and secondary display sizes.
Option indicators are not valid for this keyword.
Primary and secondary display sizes
Whether you use IBM-supplied display-size condition names or specify lines and positions directly, the
first display size you specify is the primary display size. The second display size, if specified, is the
secondary display size. Figure 15 shows an example of primary and secondary display size specification.
This figure shows the keyword specified as DSPSIZ(24 80 27 132). The primary display size is 24 by 80;
the secondary display size is 27 by 132.
DSPSIZ(24 80 27 132)
Secondary Display Size
Primary Display Size
RSLL664-1
Figure 15. Using DSPSIZ to specify primary and secondary display sizes
When you specify more than one display size for DSPSIZ, you can specify display size condition names
in positions 7 through 16 on subsequent DDS statements at the record and field levels. These display size
condition names are then used to condition keywords and the locations of fields. When both a primary
and secondary display are specified, the display file will be validated for both sizes.
Note: If you specify user-defined display size condition names for DSPSIZ, you cannot use IBM-supplied
display size condition names for conditioning.
The capability to display in the 27 x 132 mode is allowed only on a 3180-2, or a 3197 Model D1, D2, W1,
or W2 device attached locally to a 6040 or 6041 controller or remotely to a 5294 or 5394 controller. The
display size for the 27 x 132 mode will be ignored for DSPSIZ unless these controllers are used.
DDS for display files
95
The following table shows the valid display sizes.
Display sizes
Display device
Meaning
*DS3 or 24 x 80
3179 3180 3196 3197 3476 3486 3487
24 lines x 80 positions 1920 positions
(Models HA, HC, HG, and HW) 3488 total
5251 (Models 11 and 12) 5291 5292
*DS4 or 27 x 132
3180 3197 (Models D1, D2, W1, and
W2) 3477 (Models FA, FC, FD, and
FG) 3487 (Models HA, HC, HG, and
HW) 3488 (Use 6040 or 6041
controller locally, or 5294 or 5394
controller remotely for 27 x 132
display capability.)
27 lines x 132 positions 3564 positions
total
The display size designated as the primary display size should be the one with which the display file will
most often be used. Additional processing is performed when the actual display size is the secondary
display size.
The display size condition names let you improve the use of a single display file for any size display. For
example, when you are using subfiles, you can specify 24 records per page for a 27 x 132 display and 22
records per page for a 24 x 80 display.
Special cases you might encounter when specifying DSPSIZ
You might encounter the following special cases when specifying DSPSIZ:
v DSPSIZ(*DS3 *DS4). All field locations for display size *DS4 are the same as for display size *DS3.
v All fields of a record can be defined such that none fit on the display size to which the file is opened.
In this case, no fields are displayed. The record is handled as it does for a larger display where the
fields fit. The record remains active until it is deleted or overlaid. Active records can be read by your
program. The input request is sent to the display device, and the workstation user must respond to
satisfy the request.
v All fields of a subfile record must fit within the specified subfile page, and the complete page must
always fit (vertically) on the display size on which it is displayed at processing time. Specify valid
display sizes by conditioning the SFLPAG (Subfile Page) keyword with display size condition names.
v The following records occupy no display space:
– Records with no fields defined (this is different from none selected)
– Records with only hidden, message, or program-to-system fields
– Records that have the CLRL keyword specified and that have no input-capable fields. (These records
can remain on the display, but are not recognized by the i5/OS operating system for input
operations, or they can be cleared through the use of the ERASE keyword.)
For implementation and programming purposes, these records are assumed to be located at 00 (from
line 0 to line 0). On an output operation, any record located at 00 overlays a record at that location.
When an overlap occurs, the previous record is disregarded and no longer considered active. The new
record at location 00 is active and can be read by your program.
v If two fields in a record format have the same display location (line/position), they are treated as
overlapping fields. Overlapping fields are not displayed at operation time. The i5/OS operating system
checks each field as it is processed to ensure that it does not overlap a previously processed field.
If a field does overlap, it is treated as an optioned field and not selected. To allow this processing-time
checking, data description specifications must ensure all fields within a record are in primary location
sequence, even when condition names are specified. For example, assume only one input field is
specified for a record format and, according to the field location specification, this field overlaps a
preceding output field. The workstation user cannot enter any data because the input field is never
displayed.
96
System i: Programming DDS for display files
Note: The primary location sequence as it is seen in the display file must not be changed by specifying a
different location sequence for the secondary display size. (A severe error occurs and the file is not
created.)
Example 1
The following example shows how to specify primary and secondary display sizes using the DSPSIZ
keyword.
|...+....1....+....2....+....3....+....4....+....5....+....6....+....7....+....8
00010A*
00020A*
1 2
00030A
DSPSIZ(27 132 24 80)
00040A
R RECORDA
00050A
FIELDA
10 0
1 2
00060A
FIELDB
10 0
1 81
00070A
FIELDC
10 0 25 1
A
In this example, the primary display size 1 is 27 x 132 and the secondary display size 2 is 24 x 80.
FIELDB is beyond position 80 and FIELDC is beyond line 24, so the data description processor gives
them a location of *NOLOC in the expanded source printout for secondary display size 24 x 80.
If the data description processor assigns *NOLOC to an input-capable field, that field is processed at run
time to the point of setting up the input buffer data to be returned in the user’s input buffer. The field
itself is not displayed. The workstation user cannot enter into or change these fields. No processing of
any kind is done for output-only fields.
Figure 16 on page 98 shows a compiler listing for the above example.
DDS for display files
97
Figure 16. Compiler listing
Example 2
The following example is another example of specifying the primary and secondary display sizes using
the DSPSIZ keyword.
|...+....1....+....2....+....3....+....4....+....5....+....6....+....7....+....8
00010A
DSPSIZ(27 132 *WIDE 24 80 *NORMAL)
00020A
R RECORDA
00030A
FIELDA
10 0
1 2
00040A
FIELDB
10 0
1 81
00050A *NORMAL
1 50
00060A
FIELDC
10 0 25 1
00070A *NORMAL
23 1
A
This example is similar to example 1 in that it specifies for FIELDB (line 1, position 50) and for FIELDC
(line 23, position 1) on the secondary display size (user-defined as *NORMAL).
98
System i: Programming DDS for display files
Example 3
The following example shows how to reposition a field when the file is opened to different display sizes.
|...+....1....+....2....+....3....+....4....+....5....+....6....+....7....+....8
00010A
DSPSIZ(24 80 27 132)
00020A
R RECORDA
00030A
FIELD1
10 0 23 2
00040A
00050A
00060A *DS4
26 2
A
In this example, FIELD1 has valid locations on both display sizes. It appears on the next to the last line
on each display size.
Example 4
The following example shows that if you do not specify a display size condition name, the display
location of a field can still be display size dependent as the result of the plus feature of DDS.
|...+....1....+....2....+....3....+....4....+....5....+....6....+....7....+....8
00010A
DSPSIZ(*DS4 *DS3)
00020A
R RECORD1
00030A
FIELD1
21
2 70
00040A
FIELD2
10
+10
A
In this example, a line and a position for each field is calculated for each display size specified on the
DSPSIZ keyword. If the plus value extends the field location beyond position 80, the field location is
dependent on the display size. Figure 17 on page 100 is a compiler listing for the above example.
DDS for display files
99
Figure 17. Compiler list
Related concepts
“Location for display files (positions 39 through 44)” on page 27
You use these positions to specify the exact location on the display where each field begins.
“Condition for display files (positions 7 through 16)” on page 3
Positions 7 through 16 are a multiple-field area in which you can specify option indicators.
DUP (Duplication) keyword for display files
You use this field-level keyword to activate the Dup key on the display station keyboard.
Press the Dup key when the cursor is in this input-capable field. This indicates that data for this field is
to be duplicated from the record sent in the previous input operation. The actual duplication is the
responsibility of your program.
See “System/36 environment considerations for display files” on page 261 for special considerations
when specifying the DUP keyword in files that are used in the System/36 environment.
100
System i: Programming DDS for display files
The format of the keyword is:
DUP[(response-indicator ['text'])]
You cannot specify the DUP keyword on a floating-point field (F in position 35).
You should specify a response indicator for a numeric field defined with this keyword. Hex 1Cs for
numeric fields will not be returned to your buffer, but hex F0s will be returned for the remaining field
positions.
Option indicators are valid for this keyword.
Restrictions on validity checking
Validity checking keywords (CHECK, COMP, RANGE, and VALUES) can be specified with the DUP
keyword. However, they have no effect if the Dup key has been pressed.
If another field in the record format fails validity checking, the i5/OS operating system tries to read the
display again. The DUP response indicator is still returned to your program in the on condition, even if
the workstation user does not type over the DUP characters or presses the Dup key again.
Example
The following example shows how to specify the DUP keyword.
|...+....1....+....2....+....3....+....4....+....5....+....6....+....7....+....8
00010A
R RECORD1
00020A
FLDA
5
I 3 2
00030A 15
DUP(16 'FLDA was duped')
00040A
FLDAH
5 2H
A
FLDA is an input-capable character and hexadecimal field for which the workstation user can press the
Dup key. In your program, you must test the data in FLDA to ensure that it includes only the digits 0
through 9. In RPG III, you can use the TESTN operation code. In COBOL, you can use a numeric class
test. In BASIC, you can specify an ON CONV statement earlier in the program than the statement with
which you assign FLDA to FLDAH. In PL/I, you can specify an ON statement with the ERROR condition
earlier in the program than the statement with which you assign FLDA to FLDAH.
Field FLDAH is a hidden numeric field with the same length as FLDA. When the application program
reads RECORD1 and finds response indicator 16 set off, the program moves FLDA to FLDAH and uses
FLDAH (which is a numeric field). When the application program reads RECORD1 and finds response
indicator 16 set on, the Dup key was pressed and FLDA contains hex 1Cs. The program uses FLDAH
without changing its contents (which are the contents from the previous input received from the display
device).
Programming for the Dup key
The system follows this procedure of duplicating entire fields.
About this task
When you press the Dup key, the i5/OS operating system handles the field as follows:
v If the field is a character field, the data displayed in the field is returned to your program as is. A hex
1C is placed at the cursor position and in the remaining field positions to the right. (Hex 1C appears as
an over-scored asterisk on the display.) The response indicator, if specified, is set on.
v If the field is a numeric field and you specify a response indicator, a hex F0 is placed at the cursor
position and in the remaining field positions. The response indicator is set on and returned to your
program. If a response indicator is not specified, hex 1Cs are returned to your program.
DDS for display files
101
In your program, you can duplicate entire fields (either character or numeric) with the following
procedure:
1. Specify two fields for each input-capable field on the display in DDS.
a. Specify one field as an input-capable field. For this field, specify DUP with a response indicator.
You might want to specify DUP with an option indicator that is off on the first display of the field.
This prevents the workstation user from using the Dup key when the field is first displayed.
b. Specify the other field as a hidden field (H in position 38).
2. On the first output operation, set off an option indicator for DUP.
This prevents the workstation user from using the Dup key.
3. On the first input operation, move the input-capable field to the hidden field.
This saves the typed value for later use.
4. On each subsequent output operation, set the option indicator on for the DUP keyword.
This allows the workstation user to use the Dup key.
5. On each subsequent input operation, test the response indicator specified with DUP. If the response
indicator is off, the input data should be moved to the hidden field. If the response indicator is on,
you can use the existing value in the hidden field.
Note: When using the DUP keyword in a subfile, an update operation should be performed after
steps 3 and 5 to store the value of the hidden field into the subfile. This will be returned on the
next read of that subfile record.
6. Repeat steps 4 and 5 for subsequent data entry using the Dup key.
Results
You can also duplicate character fields one character at a time by saving them in arrays, then moving the
array one character at a time and checking for the DUP key indication of hex 1C.
You can achieve duplication of numeric fields one digit at a time by defining the field as character and
eventually moving it to your numeric field after the hex 1Cs have been removed. You can test whether
the Dup key has been pressed:
v For numeric fields, a response indicator is required.
v For character fields, a response indicator is optional.
The field will contain hex 1C at the cursor position and in the remaining positions if the Dup key has
been pressed.
EDTCDE (Edit Code) keyword for display files
You use this field-level keyword to edit output-capable numeric fields.
The format of the keyword is:
EDTCDE(edit-code [* |floating-currency-symbol])
Editing includes the following changes to the appearance of displayed fields, depending on which edit
code is specified:
v Leading zeros are suppressed.
v The field can be punctuated with commas and periods to show decimal position and to group digits
by threes.
v Negative values can be displayed with a minus sign or CR to the right.
v Zero values can be displayed as zero or blanks.
v Asterisks can be displayed to the left of significant digits to provide asterisk protection.
102
System i: Programming DDS for display files
v A currency symbol (corresponding to the system value QCURSYM) can be displayed immediately to
the left of the significant digit that is farthest to the left (called floating-currency symbol). For
fixed-currency symbols, use the EDTWRD keyword.
v The field can be further edited using a user-defined edit code.
EDTCDE covers most editing requirements. Use EDTWRD when the EDTCDE keyword is not sufficient.
You cannot specify both EDTCDE and EDTWRD for the same field. If a field previously defined in a
database file has EDTCDE specified, you need not specify EDTCDE for that field in the display file. You
can specify R in position 29 to refer to the previously defined field. The editing specified for the
referenced field is included in the display file. However, if you also specify length, data type, or decimal
positions for a display file field, editing specified for the referenced field is not included in the display
file, and you must specify editing again in the display file.
The DFT and DFTVAL keywords cannot be specified with the EDTCDE keyword.
Option indicators are not valid for this keyword.
The rules for specifying edit codes and edit words are the same in all types of files. You can specify two
kinds of edit codes: i5/OS edit codes and user-defined edit codes.
The EDTCDE keyword is valid only for fields with Y or blank in position 35 (Data Type/Keyboard Shift).
The use of this keyword changes the default used for position 35 to a Y.
i5/OS edit codes
The i5/OS edit codes are:
1 through 4
A through D
J through Q
W through Z
Note: The System i hardware operates with a preferred sign of F, which is equivalent to using edit code
X. Edit code X sets the default of a blank keyboard shift (position 35) to numeric-only (attribute Y).
The display length of the field is determined by the keyboard shift, not by edit code X (the default
numeric-only Y attribute might add 1 position to the field for decimals). If the DATE or TIME
keyword is specified with edit code X, the separator character is not displayed.
Optionally specifying asterisk fill or floating currency symbol
You can optionally specify asterisk fill or floating currency symbol with edit codes 1 through 4, A through
D, and J through Q.
When you specify asterisk fill, an asterisk (*) is printed for each zero that is suppressed. A complete field
of asterisks is printed for a zero balance field.
When you specify floating currency symbol, the symbol appears to the left of the first significant digit.
The symbol does not print on a zero balance when an edit code is used that suppresses the zero balance.
(The symbol that you specify must match the system value for the currency symbol (QCURSYM). The
symbol must match when the file is created. It need not match when the file is used.)
Note: If an edit code is changed after a file is created, the editing specified at the time the file was
created is used. The new edit code is not used unless the file is recreated.
The following table summarizes the functions provided by i5/OS edit codes.
DDS for display files
103
Table 6. Summary chart for i5/OS edit codes
Edit codes
Commas1
displayed
Decimal
points1
displayed
Sign
displayed
when
negative
value
Blank value
of
QDECFMT
system value
I value of
QDECFMT
system
value
Leading
J value of
QDECFMT
Zero
system value suppressed
1
Yes
Yes
No sign
.00 or 0
,00 or 0
0,00 or 0
Yes
2
Yes
Yes
No sign
Blanks
Blanks
Blanks
Yes
3
Yes
No sign
.00 or 0
,00 or 0
0,00 or 0
Yes
4
Yes
No sign
Blanks
Blanks
Blanks
Yes
A
Yes
Yes
CR
.00 or 0
,00 or 0
0,00 or 0
Yes
B
Yes
Yes
CR
Blanks
Blanks
Blanks
Yes
C
Yes
CR
.00 or 0
,00 or 0
0,00 or 0
Yes
D
Yes
CR
Blanks
Blanks
Blanks
Yes
J
Yes
Yes
-(Minus)
.00 or 0
,00 or 0
0,00 or 0
Yes
K
Yes
Yes
-(Minus)
Blanks
Blanks
Blanks
Yes
L
Yes
-(Minus)
.00 or 0
,00 or 0
0,00 or 0
Yes
M
Yes
-(Minus)
Blanks
Blanks
Blanks
Yes
N
Yes
Yes
-(Minus)
.00 or 0
,00 or 0
0,00 or 0
Yes
O
Yes
Yes
-(Minus)
Blanks
Blanks
Blanks
Yes
Yes
-(Minus)
.00 or 0
,00 or 0
0,00 or 0
Yes
Yes
-(Minus)
Blanks
Blanks
Blanks
Yes
P
Q
W
2
Yes
Y
3
Yes
Z
4
Yes
104
System i: Programming DDS for display files
Table 6. Summary chart for i5/OS edit codes (continued)
Edit codes
Commas1
displayed
Decimal
points1
displayed
Sign
displayed
when
negative
value
Blank value
of
QDECFMT
system value
I value of
QDECFMT
system
value
Leading
J value of
QDECFMT
Zero
system value suppressed
Notes:
1. The QDECFMT system value determines the decimal point character (period in U.S. usage), the character used
to separate groups of three digits (comma in U.S. usage), and the type of zero suppression (depending on
comma and period placement).
2. The W edit code suppresses the farthest left zero of a date field that is five digits long. It also suppresses the
three farthest left zeros of a field that is six to eight digits long. The W edit code also inserts slashes (/) between
the month, day, and year according to the following pattern:
v nn/nnn
v nnnn/nn
v nnnn/nnn
v nnnn/nn/nn
3. The Y edit code suppresses the farthest left zero of a date field that is three to six digits long or eight digits long.
It also suppresses the two farthest left zeros of a field that is seven positions long. The Y edit code also inserts
slashes (/) between the month, day, and year according to the following pattern:
v nn/n
v nn/nn
v nn/nn/n
v nn/nn/nn
v nnn/nn/nn
v nn/nn/nnnn
If the DATE keyword is specified with EDTCDE(Y), the separator character used is the job attribute, DATSEP at
run time. The slash (/) is the default DATSEP.
4. The Z edit code removes the sign (plus and minus) from a numeric field. The sign of the units position is
changed to a hexadecimal F before the field is written.
User-defined edit codes
Edit codes 5 through 9 are user-defined edit codes. A user-defined edit code can do more editing than an
i5/OS edit code. For example, you might need to edit numbers that include hyphens (such as telephone
numbers) or more than one decimal point. You can use user-defined edit codes for these functions. These
edit codes are named QEDIT5, QEDIT6, QEDIT7, QEDIT8, and QEDIT9, and can be referred to in DDS or
a high-level language program by number (5, 6, 7, 8, or 9).
A user-defined edit code is an i5/OS object and must exist before display file creation. It is created using
the Create Edit Description (CRTEDTD) command. When you create a display file in which a
user-defined edit code is specified, editing information is extracted from the previously created edit
description. Changing a user-defined edit code after display file creation does not affect the display file
unless the display file is re-created.
The following table shows edit codes, unedited source data, and edited output. Zero suppression and
decimal characters are determined by the system value QDECFMT. The date separator character is
determined by the job attribute DATSEP. In this figure, QDECFMT is assumed to equal x (blank), and
DATSEP is assumed to equal / (slash).
DDS for display files
105
Table 7. Valid edit codes, source data, and edited output
Edit codes
Positive
number with
two decimal
positions
Positive
number with
no decimal
positions
Negative
number with
three decimal
positions1
Negative
number with
no decimal
positions1
Zero balance
with two
decimal
positions1
Zero balance
with no
decimal
positions1
Unedited
1234567
1234567
xxxx.125–
125–
xxxxxx
xxxxxx
1
12,345.67
1,234,567
.125
125
.00
0
2
12,345.67
1,234,567
.125
125
3
12345.67
1234567
.125
125
.00
0
4
12345.67
1234567
.125
125
A
12,345.67
1,234,567
.125CR
125CR
.00
0
B
12,345.67
1,234,567
.125CR
125CR
C
12345.67
1234567
.125CR
125CR
.00
0
D
12345.67
1234567
.125CR
125CR
J
12,345.67
1,234,567
.125-
125-
.00
0
K
12,345.67
1,234,567
.125-
125-
L
12345.67
1234567
.125-
125-
.00
0
M
12345.67
1234567
.125-
125-
N
12,345.67
1,234,567
-.125
-125
.00
0
O
12,345.67
1,234,567
-.125
-125
P
12345.67
1234567
-.125
-125
.00
0
Q
12345.67
1234567
-.125
-125
W2
1234/567
1234/567
0/125
0/125
0/000
0/000
Y
3
123/45/67
123/45/67
0/01/25
0/01/25
0/00/00
0/00/00
Z
4
1234567
1234567
125
125
Notes:
1. The x represents a blank.
2. The W edit code suppresses the farthest left zero of a date field that is five digits long. It also suppresses the
three farthest left zeros of a field that is six to eight digits long. For more information, see the second footnote in
Table 6 on page 104.
3. The Y edit code suppresses the farthest left zero of a date field that is three to six digits long or eight digits long.
It also suppresses the two farthest left zeros of a field that is seven positions long. For more information, see the
third footnote in Table 6 on page 104.
4. The Z edit code removes the sign (plus or minus) and suppresses leading zeros.
Example
The following example shows how to specify the EDTCDE keyword.
|...+....1....+....2....+....3....+....4....+....5....+....6....+....7....+....8
00010A
PRICE
5 2
1 10EDTCDE(J)
00020A
SALES
7 2
2 10EDTCDE(K $)
00030A
SALARY
8 2
3 10EDTCDE(1 *)
A
The display length for PRICE is 7 because the J edit code is specified, causing the field to contain a
decimal point and an ending minus sign. It is edited as:
ddd.dd-
106
System i: Programming DDS for display files
where d represents a digit.
The display length for SALES is 11 because the K edit code and floating currency symbol are specified. It
is edited as:
$dd,ddd.dd-
The display length for SALARY is 10 because the edit code 1 is specified with asterisk fill. It is edited as:
ddd,ddd.dd
Related concepts
“Numeric only (Y)” on page 15
You can only type the numbers 0 through 9, plus (+), minus (-), period (.), comma (,), and space ( )
into the field. You can press any key to leave the field.
Related information
System values
EDTMSK (Edit Mask) keyword for display files
You use this field-level keyword to define an edit mask for fields with EDTCDE or EDTWRD keywords.
When a field is displayed with this keyword, user-specified areas of the field are protected. The EDTMSK
keyword is ignored when the workstation is not attached to a controller that supports an enhanced data
stream.
The format of the keyword is:
EDTMSK(edit mask)
One parameter must be specified.
The edit mask is made of two characters: an ampersand (&) and a blank ( ). The ampersand represents a
protected part of the field. A blank represents an unprotected part of the field. The edit mask must equal
the display length of the field (after editing), and the number of unprotected positions must equal the
program length of the field. The user must be careful to protect only nonnumeric data because protected
data is not returned to the user if the field is changed.
The field containing the EDTMSK keyword must be usage I or usage B. It must also contain the EDTCDE
or EDTWRD keywords.
The following keywords cannot be specified on a field with the EDTMSK keyword:
v AUTO (RAB, RAZ)
v CHECK(AB, MF, RB, RZ, RLTB)
v CHOICE
v CNTFLD
v DSPATR(OID SP)
Option indicators are not valid for this keyword.
|
|
|
|
|
|
|
Although the maximum number of input fields is 256, the use of the EDTMSK keyword can impact the
field count. The segments of EDTMSK fields are treated at run time as separate input fields on some
emulators or controllers. Some controllers consider each segment of the field as an actual input field, and
each segment counts toward the 256 maximum. However, some emulators count a EDTMSK field as a
single field toward the count of 256. But, they might keep track of the segments separately. One emulator
is known to have a maximum of 512 segments allowed. Therefore, when an emulator and a controller use
the same display file, the emulator might allow more EDTMSK fields than the controller.
DDS for display files
107
If the ENTFLDATR keyword is specified with the EDTMSK keyword, you might have unpredictable
results.
Example
The following example shows how to specify the EDTMSK keyword:
|...+....1....+....2....+....3....+....4....+....5....+....6....+....7....+....8
A
R RECORD
A
F1
11 0B 3 4EDTWRD('0(
)
')
A
EDTMSK(' &
&
&
')
A
F2
6 0B 4 4EDTCDE(Y)
A
EDTMSK(' & & ')
A
In this example, the dash and parentheses in field 1 are protected. Also, the data separators in field 2 are
protected.
EDTWRD (Edit Word) keyword for display files
You use this field-level keyword to specify an edit word if you cannot obtain the editing that you want
through the EDTCDE keyword.
The format of the keyword is:
EDTWRD('edit-word')
An edit word specifies the form in which the field values are to be displayed and clarifies the data by
inserting characters directly, such as decimal points, commas, floating- and fixed-currency symbol, and
credit balance indicators. The edit word can also be used to suppress leading zeros and to provide
asterisk fill protection.
If a field previously defined in a database file has EDTWRD specified, you need not specify EDTWRD for
that field in the display file. You can specify R in position 29 to refer to the previously defined field. The
editing specified for the referenced field is included in the display file. However, if you also specify
length, data type, or decimal positions for a display file field, editing specified for the referenced field is
not included in the display file, and you must specify editing again in the display file.
Parts of an edit word
An edit word consists of three parts: the body, the status, and the expansion. Figure 18 shows the three
parts of an edit word.
Figure 18. Three parts of an edit word
The body is the space for the digits transferred from the data field to the output record. The body begins
at the farthest left position of the edit word. The number of blanks (plus one for a zero or an asterisk) it
contains is equal to the number of digits of the data field to be edited. If the zero or asterisk is the first
character in the edit word, the number of blanks it contains might equal the number of digits in the data
field. The body ends with the farthest right character that can be replaced by a digit.
The status positions display the sign (+ or -) of the data field. The status continues to the right of the
body to either a CR (credit) or - (minus) symbol. These two symbols print only when the field is
negative. Edit words without the CR or - symbol have no status positions.
108
System i: Programming DDS for display files
The expansion positions are not changed by the edit operation. The expansion starts at the first position
to the right of the status (or body, if status is not specified) and ends with the farthest right character of
the edit word.
Forming the body of an edit word
The following characters have special meanings when used in the body of an edit word.
Blank A blank is replaced with the character from the corresponding position of the data field. A blank
position is referred to as a digit position.
Ampersand
An ampersand causes a blank in the edited field. The ampersand is not displayed. Note that
ampersands specified in the edit word between blanks can result in incorrect data when specified
for an input/output field. This is because embedded blanks in a numeric-only field are converted
to zeros.
Zero
A zero stops zero suppression. Place it in the farthest right position where zero suppression is to
stop. The zero is replaced with the character from the corresponding position of the data field,
unless that character is a zero. Any zeros in the data that appear to the right of the
stop-zero-suppression character are displayed. The stop-zero-suppression character is considered
a digit position; however, when it is the first character, it might not represent the digit position.
At least one leading zero is suppressed, unless it is the first character of the EDTWRD. Then it
does not count as a digit because the number of blanks equals the number of digits in the field.
Each zero that is suppressed is replaced by a blank. An asterisk replaces zeros with asterisks
(asterisk protection). Place the asterisk in the farthest right position where zero suppression is to
stop. Each zero that is suppressed is replaced by an asterisk.
Note: If your display file was created before Version 2 Release 1, it is possible that the Edit Word
(EDTWRD) keyword will produce different output after a recompile.
Asterisk
An asterisk preceding a zero is interpreted as representing asterisk protection, and in this case,
the zero prints as a constant. Any asterisks or zeros to the right of the stop-zero-suppression
character are constants.
Currency symbol
If you code a currency symbol immediately to the left of the zero suppression code, a currency
symbol is inserted in the position to the left of the first significant digit. It is called the
floating-currency symbol when used in this manner.
If you code a currency symbol in the farthest left position of the edit word, it is fixed and prints
in the same location each time. When used in this manner, it is called the fixed-currency symbol.
The currency symbol is not considered a digit replace position. This symbol must correspond to
the system value QCURSYM.
Decimals and commas
Decimals and commas are printed in the same relative positions in which they are coded in the
edit word unless they are to the left of the first significant digit. In that case, they are blanked out
or replaced by an asterisk.
All other characters are printed if they are to the right of significant digits in the edit word. If
they are to the left of the high-order significant digits in the edit word, they are blanked out or
replaced by asterisks if asterisk protection is being used.
If a constant is to be printed in the left most position, the constant must be preceded by a zero
and the field length increased by one.
DDS for display files
109
Forming the status of an edit word
The following characters have special meanings when used in the status of an edit word.
Ampersand
Causes a blank in the edited output field. An ampersand cannot be placed in the edited output
field.
CR or minus symbol
If the sign in the edited output field is plus (+), these positions are blanked out. If the sign in the
edited output field is minus (-), these positions remain undisturbed.
Forming the expansion of an edit word
The characters in the expansion portion of an edit word are always written. The expansion cannot contain
blanks. If a blank is required in the edited output field, specify an ampersand in the body of the edit
word.
Specifying a valid edit word
Use the following rules to specify a valid edit word:
v The EDTWRD keyword is valid for numeric only fields (Y specified in position 35).
You cannot specify both EDTWRD and EDTCDE for the same field.
The DFT and DFTVAL keywords cannot be specified with the EDTWRD keyword.
Enclose the edit word in single quotation marks.
The sum of the blanks and stop-zero-suppression characters (digit positions) in the edit word must
equal the length of the field.
v If the stop-zero-suppression character is the first character in the edit word, the sum of the blanks
might equal the length of the field or the length of the field minus one.
v
v
v
v
v When you use the floating-currency symbol, the currency symbol is not counted as a digit position. For
example, if you specify the floating-currency symbol for a field with a length of 7 and 2 decimal
positions, the edit word is:
EDTWRD('____$0.__)
where _ represents a blank.
v If you want to show a negative sign with a negative number, include a sign in the edit word. Use
either the minus sign (-) or the letters CR (credit) to the right of the last digit replacement character.
These print only if the number is negative.
Option indicators are not valid for this keyword.
Figure 19 on page 111 shows sample edit words with the program value of the field and the display
value of the field (as edited).
110
System i: Programming DDS for display files
Figure 19. Sample edit words
Example
The following example shows how to specify the EDTWRD keyword.
|...+....1....+....2....+....3....+....4....+....5....+....6....+....7....+....8
00020A
FIELDA
7 2
5 2EDTWRD('
$0. ')
A
Related concepts
DDS for display files
111
“Numeric only (Y)” on page 15
You can only type the numbers 0 through 9, plus (+), minus (-), period (.), comma (,), and space ( )
into the field. You can press any key to leave the field.
ENTFLDATR (Entry Field Attribute) keyword for display files
You use this field-level, record-level, or file-level keyword to define that the leading attribute of the field
changes to a specified attribute whenever the cursor is located in the field.
When defined at both the field- and record-level, the field-level specification is used for the field. The
ENTFLDATR keyword is ignored when the workstation is not attached to a controller that supports an
enhanced data stream.
The format of the keyword is:
ENTFLDATR[([color] [display attribute] [cursor visible])]
The parameters are optional for the keyword.
The color parameter specifies the color the field will change to when the cursor enters the field on a color
workstation. The parameter is specified as an expression of the form (*COLOR value).
The valid values for the color parameter are:
Value Meaning
BLU
Blue
GRN
Green
PNK
Pink
RED
Red
TRQ
Turquoise
YLW
Yellow
WHT
White
If the color parameter is not specified, the default is white.
The display-attribute parameter specifies the display attributes of the field when the cursor enters the
field. The parameter is specified as an expression of the form (*DSPATR value1 <value2 <value3...>>).
The valid values for the display attributes are:
Value Meaning
BL
Blink
CS
Column separator
HI
High intensity
ND
Nondisplay
RI
Reverse image
UL
Underline
The default display attribute is HI.
112
System i: Programming DDS for display files
Note: Display attributes CS, HI, and BL can cause fields on 5292, 3179, 3197 Models C1 and C2, 3487
Models HC, and 34886 workstations to appear as color fields. Separator lines will not appear when
display attributes HI, RI, and UL are used.
The cursor visible parameter allows the user to specify if the cursor is visible or invisible when it enters
the field. *CURSOR means the cursor will stay visible and *NOCURSOR indicates that the cursor will
become invisible when it enters the field. *CURSOR is the default. When *NOCURSOR is specified on the
ENTFLDATR keyword, the specified field must have an I (inhibit keyword entry) in position 35. If the
field does not have data type I, then the default is used for the visible cursor parameter.
The field containing the ENTFLDATR keyword must be an input-capable field. The ENTFLDATR
keyword is ignored for the field with DSPATR(PR).
Option indicators are valid for this keyword.
If the ENTFLDATR keyword is specified with the EDTMSK keyword, you might have unpredictable
results.
Example
The following example shows how to specify the ENTFLDATR keyword:
|...+....1....+....2....+....3....+....4....+....5....+....6....+....7....+....8
A
A
R RECORD
A
F1
10A B 3 4ENTFLDATR
A
F2
10A B 13 4ENTFLDATR((*COLOR RED))
A
F3
10I B 16 4ENTFLDATR(*NOCURSOR (*DSPATR HI RI))
In this example, the color turns white, the attribute is high intensity, and the cursor is visible for F1. For
F2, the color is red, the attribute is high intensity, and the cursor is visible. For F3, the color is white, the
attributes are high intensity and reverse image, and the cursor is not visible.
Related reference
“COLOR (Color) keyword for display files” on page 73
You use this keyword to specify the color of a field on a color display.
ERASE (Erase) keyword for display files
You use this record-level keyword with the OVERLAY keyword to specify that the records whose names
you supplied as parameter values are to be erased from the display when this record is written.
The format of the keyword is:
ERASE(record-name-1 [record-name-2 ...[record-name-20]])
The record formats specified as parameter values must exist in the file.
ERASE can be specified more than once. The OVERLAY keyword must be specified whenever the ERASE
keyword is specified.
If the ERASE and CLRL keywords are both in effect on an output operation, the records specified in the
ERASE keyword are erased despite the CLRL keyword.
A record already on the display that has no input-capable fields and that has the CLRL specified cannot
be erased by the ERASE keyword on another record (ERASE has no effect).
6. Dependent on the monitor attached to the display device.
DDS for display files
113
If the specified record is not on the display, this function is ignored for that record name.
Option indicators are valid for this keyword.
Note: This function requires extra data transmission and should be used only when you do not want to
erase all other record formats. You can also specify the OVERLAY keyword with option indicators
so that you can select when to erase all other formats.
Example
The following example shows how to specify the ERASE keyword.
|...+....1....+....2....+....3....+....4....+....5....+....6....+....7....+....8
00020A
R REC1
A
:
A
:
A
R REC2
OVERLAY
A
:
A
:
A
R REC4
OVERLAY
A
ERASE(REC1)
A
ERASEINP (Erase Input) keyword for display files
You use this record-level keyword with the OVERLAY keyword to erase unprotected input-capable fields
already on the display. Unprotected input-capable fields are fields for which the DSPATR(PR) keyword is
not in effect.
The fields are erased before the record format you are defining is displayed. Input-capable fields in the
record format you are defining are not erased.
See the Application Display Programming book
that are used in the System/36 environment.
for information about how to use ERASEINP in files
The format of the keyword is:
ERASEINP[(*MDTON | *ALL)]
To erase all input-capable fields already on the display, specify the *ALL parameter. To erase only
input-capable fields that have their changed data tags (MDTs) set on, specify the *MDTON parameter.
Specifying ERASEINP(*MDTON) or ERASEINP has the same effect as pressing the Erase Input key.
The OVERLAY keyword must be specified whenever ERASEINP is specified.
When the MDTOFF keyword is specified on the same record format as ERASEINP, two conditions can
occur:
v ERASEINP(*ALL) implies MDTOFF(*UNPR), unless the MDTOFF(*ALL) keyword is specified.
v If the ERASEINP or ERASEINP(*MDTON) is specified with MDTOFF(*ALL), the end effect is as if
ERASEINP(*ALL) and MDTOFF(*ALL) are both specified.
If the ERASEINP and PROTECT keywords are both in effect for an output operation, the i5/OS operating
system first erases the input-capable fields specified on the ERASEINP parameter value, and then protects
all input-capable fields on the display from input typing.
ERASEINP reduces line traffic because record formats already displayed can be reused and do not need
to be sent to the display again.
114
System i: Programming DDS for display files
A warning message appears at file creation time if the ERASEINP keyword is specified in a record with
the DSPMOD keyword. At run time, the ERASEINP keyword is ignored when the display mode changes.
Option indicators are valid for this keyword.
Example
The following example shows how to specify the ERASEINP keyword.
|...+....1....+....2....+....3....+....4....+....5....+....6....+....7....+....8
00010A*
00020A*
00030A*
00040A
R RECORD1
OVERLAY
00050A
:
ERASEINP
00060A
:
00070A
:
00080A*
(All changed input-capable fields on the screen are erased)
00090A
:
00100A
:
00110A
:
00120A
R RECORD2
OVERLAY
00130A
:
ERASEINP(*ALL)
00140A
:
00150A
:
00160A*
(All unprotected input-capable fields on the screen are erased
00170A*
whether changed or not)
00180A
00190A
00200A
R RECORD3
OVERLAY
00210A 32
ERASEINP(*MDTON)
00220A N32
ERASEINP(*ALL)
00230A
FIELD1
5
I
DSPATR(PR)
00240A
:
00250A
:
00260A
:
00270A*
(FIELD1 is never erased)
A
ERRMSG (Error Message) and ERRMSGID (Error Message Identifier)
keywords for display files
You can use one of these field-level keywords to identify a message that is displayed on the message line
and that is associated with that field.
A warning message appears at file creation time if either of these keywords is specified on a record with
the DSPMOD keyword. At run time, these keywords are ignored when the display mode changes.
Option indicators are valid for these keywords.
ERRMSG keyword
The format of the keyword is:
ERRMSG('message-text' [response-indicator])
For ERRMSG, the parameters specify the message text and, optionally, a response indicator. The message
text is the message to be displayed. (The Help key is not supported. Message help is not displayed when
the Help key is pressed.)
If you specify a response indicator, it should be the same as the option indicator used to condition
ERRMSG. On the input operation that follows the display of the error message, the i5/OS operating
DDS for display files
115
system turns off the indicator. If the response and the option indicators are the same, they are both
turned off. One exception to this rule is if the response indicator is also specified for another keyword,
such as CHANGE, CAnn, or CFnn. In that case, the on/off setting of the response indicator is based on
the results of the function provided by the CHANGE or CFnn keyword. When a response indicator is
specified, the first 50 characters of the message are also used as indicator text. Separate response indicator
text is not valid for the ERRMSG keyword.
ERRMSGID keyword
The format of the keyword is:
ERRMSGID(msgid [library-name/]msg-file [response-indicator] [&msg-data])
For ERRMSGID, the parameters specify:
v The message identifier for the message to be displayed
v The message file and, optionally, the library
v Optionally, a response indicator
v Optionally, a msg-data field name
The response indicator, if specified, should be the same as the option indicator used to condition the
ERRMSGID keyword. On the subsequent input operation, after the display of the error message, the
i5/OS operating system turns off the indicator. However, if the response indicator is also specified on
another keyword, such as CHANGE, CAnn, or CFnn, the on/off setting of the response indicator is based
on the results of the function provided by the CHANGE, CAnn, or CFnn keyword.
Note: Indicator text cannot be specified on the ERRMSGID keyword.
The msg-data field, if specified, contains the replacement text for the specified message. The field must
exist in the record format and the field must be defined as a character field (data type A) with usage P.
For more information about how replacement text works, refer to the Send Program Message (CL)
command in the Control language topic.
Priority among selected keywords
You can specify ERRMSG and ERRMSGID more than once for a single field. During program processing,
use option indicators to select a particular message to be displayed.
Only one message can be displayed at one time even if messages are in effect for several fields on the
same output operation. The field whose message is displayed is the first field for which the program
selected a message.
If several keywords are in effect for one field on an output operation, the message to be displayed is the
first of the following keywords:
v ERRMSG (If more than one ERRMSG keyword is selected, the first one the program selects is
displayed.)
v ERRMSGID (If more than one ERRMSGID keyword is selected, the first one the program selects is
displayed.)
A message field is displayed only if no error message keywords are also to be displayed.
For a list of priorities including the SFLMSG and SFLMSGID keywords, see SFLMSG (Subfile Message)
and SFLMSGID (Subfile Message Identifier) keywords for display files.
116
System i: Programming DDS for display files
Conditions occurring during message display
The displaying of a message using ERRMSG and ERRMSGID is similar to the displaying of messages by
the i5/OS operating system when field validation errors are detected.
When a message is displayed because of either the ERRMSG or the ERRMSGID keyword, all fields on the
display are kept, including the field the message is associated with. Except for option indicators, data in
the output buffer is ignored (that is, any new data from the program is not sent to the display).
The function keys valid following display of a message are:
v Function keys specified at the file level
v Function keys specified for the record format for which a message is displayed, if selected when the
message is displayed
When the message is displayed, the following conditions occur:
v For all errors:
– The message is highlighted.
– The cursor is blinked and the keyboard locked until the workstation user presses the Reset key.
v For errors associated with input-capable fields:
– All fields in error are displayed with their images reversed.
If a field in error has both the underline (UL) display attribute and the highlight (HI) attribute or the
underline (UL) attribute and COLOR(BLU, WHT, or YLW) specified, its image is not reversed.
– The cursor is repositioned to the first displayed field that is in error.
v For errors associated with output-only fields:
– The display attribute of the field is not changed.
– The cursor is not positioned to the field (it does not change position).
Note: Some display attributes can cause fields on the IBM Color Display Station to appear as color fields.
Restoration of reversed image fields
Fields are displayed with their images reversed because of system-detected typing errors or because of
the ERRMSG or the ERRMSGID keyword. Generally, the i5/OS program restores the image on the next
I/O operation to the display, typically the next request from your program. The restoration is done before
the requested function is performed. The following list shows exceptions where requests from your
program do not cause the i5/OS operating system to restore reversed image fields:
v An input request with cancel (canceling a read operation with NOWAIT)
v A close request when the KEEP keyword is in effect
v Any request to a subfile record (no data is sent to the device)
v An output operation to a subfile-control record format that does not display the subfile control record
or subfile records (for example, clearing, deleting, or initializing the subfile)
Restrictions and notes
v When an ERRMSG or ERRMSGID keyword is in effect, no processing other than the processing for
these keywords is performed for the record. If neither keyword is in effect, the record is processed in
the normal manner.
v When the RMVWDW keyword is active, error messages are not displayed.
v ERRMSG and ERRMSGID are valid for output-only, input-only, or input/output fields. These two
keywords cannot be specified for a constant, hidden, program-to-system, or message field.
v For input or output capable fields, ERRMSG and ERRMSGID are in effect only if the record containing
the field for which they are specified is already on the display.
DDS for display files
117
v ERRMSG and ERRMSGID cannot be specified in a subfile record format (SFL keyword specified). To
display error messages for a subfile, see SFLMSG (Subfile Message) and SFLMSGID (Subfile Message
Identifier) keywords for display files.
v ERRMSG and ERRMSGID are ignored if the variable start line number (SLNO(*VAR) specified) has
changed since the last output operation.
v If you specify ERRMSG or ERRMSGID, you should also specify RSTDSP(*YES) on the Create Display
File (CRTDSPF) or Change Display File (CHGDSPF) command. Otherwise, data on the display can be
lost if the file is suspended.
v On an output operation that causes the display modes to be changed, ERRMSG and ERRMSGID are
ignored.
Example
The following example shows how to specify the ERRMSG and ERRMSGID keywords.
|...+....1....+....2....+....3....+....4....+....5....+....6....+....7....+....8
00010A
R CUSMST
00020A
:
00030A
:
00040A
:
00050A
QTYORD
10A I 5 3
00060A 61
ERRMSG('No stock available' 61)
00070A 62
ERRMSG('Partial stock available' +
00080A
62)
00090A 63
ERRMSGID(MSG2000 CONSOLEMSG 63 +
00100A
&RPLTXT);
00110A
RPLTXT
78A P
A
Related reference
“COLOR (Color) keyword for display files” on page 73
You use this keyword to specify the color of a field on a color display.
“SFLMSG (Subfile Message) and SFLMSGID (Subfile Message Identifier) keywords for display files”
on page 217
You use these record-level keywords on the subfile-control record format to identify a message to be
displayed on the message line when your program performs an output operation to the subfile-control
record format.
ERRSFL (Error Subfile) keyword for display files
You use this file-level keyword to specify that messages should be displayed using a system-supplied
error subfile.
Messages that display in the error subfile are system validity check messages and messages associated
with the following keywords:
ERRMSG
ERRMSGID
SFLMSG
SFLMSGID
CHECK(M10)
CHECK(M11)
CHECK(VN)
CHECK(VNE)
COMP
RANGE
VALUES
Validity check messages associated with the following input errors are also displayed in the error subfile:
v Errors in floating point operations
v Decimal position entry errors
118
System i: Programming DDS for display files
This allows you to page through all the error messages issued when a record is written to the display,
and all the validity check error messages issued when a record is read from the display. The system
displays the error subfile on the message line. If the message line overlaps a record already displayed on
the screen, the ERRSFL keyword is ignored.
This keyword has no parameters.
Option indicators are not valid for this keyword.
Example
The following example shows how to specify the ERRSFL keyword.
|...+....1....+....2....+....3....+....4....+....5....+....6....+....7....+....8
00010A
MSGLOC(24)
00020A
ERRSFL
00030A
R RCD1
00040A
FIELD1
5A
B 2 3
00050A 10
ERRMSGID(MSG0001 MSGF1 10 &MDTA);
00060A
FIELD2
5A
B 5 7
00070A
ERRMSG('ERROR MSG 1' 11)
00080A
FIELD3
4S
I 7 7RANGE(1000 9999)
00090A
CHKMSGID(MSG0002 MSGF1 &MDTA1);
00100A
FIELD4
10A
B 8 7CHECK(VN)
00110A
MDTA
78A
P
00120A
MDTA1
4A
P
A
In this example, when RCD1 is read from the display, any previous messages in the error subfile are
cleared. Then, if FIELD3 does not contain a value in the range 1000 to 9999 and FIELD4 does not contain
a valid name, the system places the message MSG0002 and the system message associated with
CHECK(VN) in the error subfile and displays the error subfile on line 24 of the display. The user can
view the messages by pressing the Page Up and Page Down keys.
When RCD1 is read again from the display, the previous messages in the error subfile are cleared. Then,
if FIELD3 and FIELD4 are valid, control returns to the application. If FIELD1 and FIELD2 are not valid,
when the application writes RCD1 to the display with indicators 10 and 11 on, the system places the
message MSG0001 and the text ERROR MSG 1 in the error subfile and displays the error subfile on line 24
of the display. The user can view the messages by pressing the Page Up and Page Down keys.
FLDCSRPRG (Cursor Progression Field) keyword for display files
You use this field-level keyword to define the field to which the cursor moves when it exits a field.
The FLDCSRPRG keyword is ignored when the workstation is not attached to a controller that supports
an enhanced data stream.
The format of the keyword is:
FLDCSRPRG(name of a field)
One parameter must be specified.
The field containing the FLDCSRPRG keyword is defined as an input-capable field. It cannot be defined
in a subfile.
The field name is a name of an input-capable field that is defined inside the same record that this field is
in.
Option indicators are not valid for this keyword.
DDS for display files
119
The FLDCSRPRG keyword is not allowed with the SNGCHCFLD or MLTCHCFLD keywords.
Example
The following example shows how to specify the FLDCSRPRG keyword:
|...+....1....+....2....+....3....+....4....+....5....+....6....+....7....+....8
R RECORD
F1
10A B
3 4FLDCSRPRG(F3)
F2
10A B 13 4FLDCSRPRG(F1)
F3
10A B 16 4FLDCSRPRG(F2)
In this example, the cursor moves from field 1 to field 3, then from field 3 to field 2, and finally from
field 2 to field 1.
FLTFIXDEC (Floating-Point to Fixed Decimal) keyword for display files
You use this field-level keyword to display a number in an output-capable (usage B or O) floating-point
field in fixed-decimal notation.
This keyword has no parameters.
The floating-point number is first converted to the equivalent number with an exponent of zero. If the
resulting number (digits and exponent) will fit in the field defined by the length and decimal positions
values, the number is displayed with the exponent suppressed and aligned at the decimal point. If the
number will not fit in the field defined by the length and decimal position values, the number is
displayed in standard floating point form, n.nnnnnnE+nnn. When FLTFIXDEC is specified, the display
length of the field is the DDS length plus 2 (the sign and the decimal point). The minimum length of the
field is 6.
When the number is too large or small for the fixed-point form specified by FLTFIXDEC with the total
digits and fractional digits specified for the field, a floating point form is displayed that presents the
significand as follows. (The significand is the string of digits including the sign and decimal point to the
left of the exponent character E.)
v Total significand decimal digits: DDS total digits minus 5
v Fractional significand digits: DDS total digits minus 6
FLTFIXDEC has no effect on the input format of the data. Numbers can be typed into the field in either
fixed point or floating point format. When displayed again, however, FLTFIXDEC will be used to
determine the display format.
Option indicators are not valid for this keyword.
Example
The following example shows how to specify the FLTFIXDEC keyword.
|...+....1....+....2....+....3....+....4....+....5....+....6....+....7....+....8
A
R RECFMT1
A
FIELD1
10F 3B 1 2FLTFIXDEC
A
FLTPCN(*DOUBLE)
A
The output numbers for the example will be converted as follows:
Output number
-4.99994321000000E-004
-5.00010000000000E-004
-2.69123400000000E-002
120
System i: Programming DDS for display files
Displayed as
'-4.9999E-004'
'
-0.001'
'
-0.027'
Output number
-0.00000000000000E+000
0.00000000000000E+000
2.71828182845900E++003
3.14159000000000E-052
9.87654321012345E+006
9.99999999960000E+006
Displayed as
'
0.000'
'
0.000'
'
2718.282'
'3.1416E-052'
'9876543.210'
'1.0000E+007'
FLTPCN (Floating-Point Precision) Keyword for Display Files
You use this field-level keyword to specify the precision of a floating-point field.
The format of the keyword is:
FLTPCN(*SINGLE | *DOUBLE)
The valid parameters are *SINGLE (single precision) and *DOUBLE (double precision). This keyword is
valid for floating-point fields only (data type F).
A single precision field can be up to 9 digits; a double precision field can be up to 17 digits. If you
specify a field length greater than 9 (single precision) or 17 (double precision), an error message appears
and the file is not created.
Option indicators are not valid for this keyword.
Example
The following example shows how to specify the FLTPCN keyword.
|...+....1....+....2....+....3....+....4....+....5....+....6....+....7....+....8
00090A
FIELDA
17F 4
1 5FLTPCN(*DOUBLE)
A
FIELDA is a floating-point field with double precision.
FRCDTA (Force Data) keyword for display files
You use this record-level keyword to display a record format immediately, without waiting for the next
input or input/output operation. When the buffer is partially full, the FRCDTA keyword can be used to
clear the buffer.
Note: If this keyword is used after each write statement, performance problems will occur.
This keyword has no parameters.
When this keyword is in effect for a record format, the record format is displayed as if you had specified
DFRWRT(*NO) on the Create Display File (CRTDSPF) command or the Change Display File (CHGDSPF)
command.
You can use this keyword when DFRWRT(*YES) is in effect for the display file and when your program
does several output operations before doing an input operation. With DFRWRT(*YES) specified, none of
the record formats is displayed until the input operation. There might be a long delay for the workstation
user while the program completes its processing. You can specify FRCDTA for a record format that is
displayed first. This record format tells the workstation user that the delay is normal. For a step-by-step
description, see the following example.
The FRCDTA keyword can be specified once for each record format.
DDS for display files
121
Option indicators are valid for this keyword.
Example
The following example shows how to specify the FRCDTA keyword.
|...+....1....+....2....+....3....+....4....+....5....+....6....+....7....+....8
00010A* Following record format displays in progress message
00020A
R INPROG
LOCK
00030A
FRCDTA
00040A
12 21'Please wait; +
00050A
operations in progress'
A
00060A* Following record format uses upper part of screen
00070A
R RCD1
OVERLAY
00080A
1 34'Sample Title'
00090A
FLD1
8 0
3 2
00100A
FLD2
20
4 2
A
00110A* Following record format uses middle part of screen
00120A
R RCD2
OVERLAY
00120A
FLDA
8
11 2
00140A
FLDB
18
12 2
A
00150A* Following record format uses lower part of screen
00160A
R RCD3
OVERLAY
00170A
FLDC
8
B 15 2
00180A
FLDD
8
B 16 2
A
Three record formats (RCD1, RCD2, and RCD3) are used to create a single display; each of these record
formats uses only a part of the display. Record format INPROG prepares the workstation user for the
delay while the other three record formats are prepared. The program does the following operations:
v Displays record format INPROG. With FRCDTA specified, this displays the in-progress notice
immediately. The keyboard remains locked because the LOCK keyword is specified.
v Continues processing to prepare the other three record formats (RCD1, RCD2, and RCD3), then
displays them. Because they overlap record format INPROG, it is erased.
v Reads record format RCD3. This unlocks the keyboard and the workstation user can respond to the
complete display.
GETRETAIN (Get Retain) keyword for display files
You use this record-level keyword with the UNLOCK keyword to specify that the i5/OS operating
system is not to erase input-capable fields on input operations as described under the UNLOCK
keyword.
This keyword has no parameters.
Using GETRETAIN reduces input typing when successive records contain mostly identical input. With
GETRETAIN specified, the workstation user needs only to change certain input fields rather than
retyping the entire record.
You must specify the UNLOCK keyword without any parameters when using GETRETAIN. The
UNLOCK(*MDTOFF) specification provides the same function as GETRETAIN.
Option indicators are not valid for this keyword.
Example
The following example shows how to specify the GETRETAIN keyword.
122
System i: Programming DDS for display files
|...+....1....+....2....+....3....+....4....+....5....+....6....+....7....+....8
00101A
R REC1
GETRETAIN
A
UNLOCK
A
Related reference
“UNLOCK (Unlock) keyword for display files” on page 243
You use this record-level keyword to specify that the i5/OS operating system is to unlock the
keyboard immediately after issuing an input operation to the record format you are defining.
HELP (Help) keyword for display files
You use this file-level or record-level keyword to enable the Help key.
See “System/36 environment considerations for display files” on page 261 for special considerations
when you specify the HELP keyword in files that are used in the System/36 environment.
The format of the keyword is:
HELP[(response-indicator ['text'])]
If you specify a response indicator, the response indicator is set on and returned to your program. No
input data is transmitted from the device. Processing is similar to that of a command attention key.
The optional text is included on the listing created at program compilation time to explain the intended
use of the indicator. This text has no function in the file or program other than as a comment. The single
quotation marks are required. If you specify more than 50 characters between the single quotation marks,
the text is truncated to 50 characters on the program list.
One of the following actions occurs when the Help key is pressed:
v Second level text for a message is displayed if the cursor is located in a message subfile or on a field
which specified either the ERRMSGID or SFLMSGID keyword.
v Online help information associated with either the entire display or an area on the display. This
function is indicated by H specifications (refer to HLPARA (Help Area) keyword for display files)
HLPDOC keyword.
v Control is returned to the user’s program. This occurs when there are no H specifications or file-level
HLPDOC, HLPPNLGRP, or HLPRCD keywords in the file.
If this keyword is not specified and the Help key is pressed, the i5/OS operating system issues an error
message indicating that the Help key is not valid at that time.
The HLPRTN keyword allows you to use option indicators to select when online help information is
displayed, and when control is returned to the program.
When a response indicator is specified on the HELP keyword, no H specifications or HLPRCD,
HLPPNLGRP, HLPDOC, or HLPRTN keywords can be specified in the file.
HELP (with no response indicator) is required if the file contains H specifications or HLPRCD,
HLPPNLGRP, HLPDOC, or HLPRTN keywords.
Option indicators are valid for this keyword.
Example
The following example shows how to specify the HELP keyword.
DDS for display files
123
|...+....1....+....2....+....3....+....4....+....5....+....6....+....7....+....8
00024A
HELP
A
R RECORD1
A
Related reference
“Type of name or specification for display files (position 17)” on page 7
You can specify a value in this position to identify the type of name in positions 19 through 28.
“ALTHELP (Alternative Help Key) keyword for display files” on page 31
You use this file-level keyword to assign a command attention (CA) key as an alternative Help key.
“HLPRTN (Help Return) keyword for display files” on page 134
You use this file-level or record-level keyword to return control to your program when you press the
Help key.
“HLPARA (Help Area) keyword for display files”
You use this help-specification-level keyword to define a rectangular area on the display.
HLPARA (Help Area) keyword for display files
You use this help-specification-level keyword to define a rectangular area on the display.
If the cursor is located in this area when you press the Help key, the online help information specified for
that help (H) specification (on a HLPDOC, HLPPNLGRP, or HLPRCD keyword) is displayed.
The format of the keyword is:
HLPARA(top-line left-position bottom-line right-position)
or
HLPARA(*RCD)
or
HLPARA(*NONE)
or
HLPARA(*FLD field-name [choice-number])
or
HLPARA(*CNST help-identifier)
Observe the following rules when the line and position values are specified as parameters:
v The line and position values must be within the display size.
v If you do not specify HLPARA for a secondary display size, the HLPARA of the primary display size is
used if it is valid for the secondary display size. HLPARA(*NONE) is used if the HLPARA of the
primary display size is not valid for the secondary display size.
v The top line must not exceed the bottom line and the left position must not exceed the right position.
v If you specify the SLNO(n) keyword on the record, the top-line and bottom-line values are adjusted,
and any errors are diagnosed at creation time. If you specify the SLNO(*VAR) keyword on the record,
the top line and bottom line are adjusted at processing time.
The special value *RCD indicates that the help area is the area of the record containing the H
specification. This area includes all display positions in every line occupied by the record.
HLPARA(*RCD) is not valid for subfile control (SFLCTL) or user-defined (USRDFN) record formats.
If you specify HLPARA(*RCD) on an H specification, the record format containing the H specification
must contain at least one displayable field for the primary display size. Hidden (H in position 38),
message (M in position 38), and program-to-system (P in position 38) fields and fields that specify a
SFLPGMQ or SFLMSGKEY keyword are not displayable.
The special value *NONE indicates that no help area is associated with the help information defined on
this H specification. If the help information is defined using the UIM (HLPPNLGRP keyword), it is not
displayed as item-specific help when the Help key is pressed, but might be displayed as extended help. If
124
System i: Programming DDS for display files
the help information is defined using DDS (HLPRCD keyword), it is not displayed as primary help when
the Help key is pressed, but it might be displayed as secondary help when the Page Up or Page Down
key is pressed on another help display. The *NONE value is not useful when the help information is
defined in a document (HLPDOC keyword), because this information will never be displayed when the
Help key is pressed.
The special value *FLD indicates that the help area is the area of a field. If the field occupies only one
line, the help area consists of the first and last characters of the line and all the characters in between.
If the field wraps from one line to another, the help area consists of the entire length of all lines in the
field. For example, if a field starts on line 3, position 4 and ends on line 5, position 10, the help area starts
in line 3, position 1 and ends in line 5, position 80.
If the field is a choice or a continued-entry field, the help area consists of the rectangular area occupied
by the choice or continued-entry field.
The field-name parameter specifies the name of the field for which the help area is defined. The field
must exist in the record containing the H specification.
If the choice-number parameter is specified, the help area is the area of the choice within the field
specified. When a choice number is specified, the field name must be the name of a menu-bar field or a
selection field, and the choice number you specify must also be specified on a MNUBARCHC or
CHOICE keyword for that field. Valid values for the choice number are positive integers greater than 0
and less than 100.
The *CNST special value indicates that the help area is the area of a constant field. This area includes the
beginning and ending attribute bytes of the field.
The help-id parameter is a number that identifies the constant field for which this help area is defined.
The constant field must exist in the record containing the H specification, and it must have the HLPID
keyword specified with the same help-identifier.
You must specify at least one HLPARA keyword on an H specification. When you specify multiple
HLPARA keywords for each H specification, you must use display size conditioning.
Help areas can overlap when multiple H specifications are specified on a record. When multiple H
specifications are specified, the first H specification with both of the following characteristics is used:
v The help area specified on the HLPARA keyword contains the current cursor location.
v The option indicator on the HLPRCD, HLPPNLGRP, or HLPDOC keyword was in effect when the
application record was written to the display.
The following rules apply to H specifications:
v An H in position 17 denotes the start of an H specification. The H specification must be located in the
DDS after the record-level keywords and before the first field in that record.
v Each H specification must have exactly one HLPRCD, HLPPNLGRP, or HLPDOC keyword, up to one
HLPBDY or HLPEXCLD keyword, and at least one HLPARA keyword.
v The end of the H specification is denoted by another H in position 17 or the first field.
v You cannot use H specifications in subfile (SFL keyword) record formats. H specifications are not
allowed in subfile control formats associated with message subfiles (SFLMSGRCD keyword).
Option indicators are not valid for this keyword.
DDS for display files
125
Example 1
The following example shows how to specify the HLPARA keyword:
|...+....1....+....2....+....3....+....4....+....5....+....6....+....7....+....8
A
HELP
A
HLPRCD(DFTHELP)
A
R RECORD1
A
H
HLPARA(1 5 3 15)
A
HLPDOC(FLDHELP DOC1 FOLDER1)
A
A
H
HLPARA(*RCD)
A
HLPRCD(HELPRCD1)
A
A
H
HLPARA(*NONE)
A
HLPRCD(HELPRCD2)
A
FIELD1
10A
2 5
A
FIELD2
40A
10 10
A
In this example, the HLPARA keyword on the first H specification indicates that the area from line 1,
position 5 to line 3, position 15 is to be associated with the online help information document DOC1. If
the cursor is located in this area when the Help key is pressed, document DOC1 is displayed beginning
at label FLDHELP.
The HLPARA keyword on the second H specification indicates that the area occupied by RECORD1 (lines
2 through 10) is to be associated with the online help information record HELPRCD1. If the cursor is
located anywhere on lines 2 through 10 (outside the area defined by the first H specification) when the
Help key is pressed, record HELPRCD1 is displayed.
The HLPARA keyword on the third H specification indicates that no area is to be associated with the
online help information HELPRCD2. HELPRCD2 can only be displayed by pressing the Page Up or Page
Down key from a online help information display.
Example 2
|...+....1....+....2....+....3....+....4....+....5....+....6....+....7....+....8
A
HELP HLPRCD(DFTHELP)
A
R RECORD
A
H
HLPARA(*FLD F1 1)
A
HLPRCD(UNDOHLP HLPLIB/HLPFILE)
A
H
HLPARA(*FLD F1 2)
A
HLPRCD(MARKHLP HLPLIB/HLPFILE)
A
H
HLPARA(*FLD F1 3)
A
HLPRCD(COPYHLP HLPLIB/HLPFILE)
A
H
HLPARA(*FLD F2)
A
HLPRCD(F2HLP HLPLIB/HLPFILE)
A
H
HLPARA(*CNST 1)
A
HLPRCD(TITLEHLP HLPLIB/HLPFILE)
A
1 37'Title' HLPID(1)
A
F1
2Y 0B 10 2SNGCHCFLD
A
CHOICE(1 'Choice 1')
A 01
CHOICE(2 'Choice 2')
A
CHOICE(3 'Choice 3')
A
F2
10A B 10 30
A
The HLPARA keyword on the first three H specifications indicates the areas occupied by Choice 1,
Choice 2, and Choice 3, which are to be associated with online help information. If Choice 2 is turned off
so that Choice 3 moves up one line, the help area for Choice 3 automatically moves with the choice.
The HLPARA keyword specified on the 4th H specification indicates the area of F2 to be associated with
online help information. This area is line 10, from position 29 through position 40.
126
System i: Programming DDS for display files
The HLPARA keyword specified on the 5th H specification indicates the area of the constant title to be
associated with online help information. This area is line 1, from position 36 through position 42.
Related reference
“HLPRTN (Help Return) keyword for display files” on page 134
You use this file-level or record-level keyword to return control to your program when you press the
Help key.
“HELP (Help) keyword for display files” on page 123
You use this file-level or record-level keyword to enable the Help key.
HLPBDY (Help Boundary) keyword for display files
You use this help-specification-level keyword to limit the online help information that is available when
online help information is displayed.
This keyword has no parameters.
If the HLPBDY keyword is not specified, the online help information associated with all active H
specifications (accumulated for all records on the display) is accessible to the user. Specifying the
HLPBDY keyword partitions the list into sublists by defining help boundaries. Each sublist contains the
H specifications specified between help boundaries. The H specification that has the HLPBDY keyword is
considered to be before the boundary. If the help information is defined using DDS (HLPRCD keyword),
the user has access only to the help information in the sublist containing the H specification selected
when the Help key is pressed. If the help information is defined using the UIM (HLPPNLGRP keyword),
the sublists determine the extended help. The extended help consists of the file level HLPPNLGRP
followed by the sublist containing the H specification selected for item-specific help.
Option indicators are valid for this keyword.
Example
The following example shows how to specify the HLPBDY keyword.
|...+....1....+....2....+....3....+....4....+....5....+....6....+....7....+....8
A
HELP
A
HLPTCD(DFTHELP)
A
R RECORD1
A*
A* This is H-spec 1
A*
A
H
HLPARA(1 5 3 15)
A
HLPRCD(HELPRCD1)
A*
A* This is H-spec 2
A*
A
H
HLPARA(*NONE)
A
HLPRCD(HELPRCD2)
A
HLPBDY
A*
A* This is H-spec 3
A*
A
H
HLPARA(4 5 6 15)
A
HLPRCD(HELPRCD3)
A 90
HLPBDY
A*
A* This is H-spec 4
A*
A
H
HLPARA(8 5 10 15)
A
HLPRCD(HELPRCD4)
A
HLPBDY
A
FIELD1
10A
1 10
A
DDS for display files
127
The list of H specifications for RECORD1 is divided into two or three sublists, depending on the
condition of indicator 90 at the time the Help key is pressed. If indicator 90 is off, there are two sublists.
The first sublist contains H specifications 1 and 2, and the second sublist contains H specifications 3 and
4. If indicator 90 is on, there are three sublists. The first sublist contains H specifications 1 and 2, the
second sublist contains H specification 3, and the third sublist contains H specification 4.
HLPCLR (Help Cleared) keyword for display files
You use this record-level keyword to clear the list of active help specifications. When this record is
displayed, only the online help information that is defined on the current record format or on the file
level is accessible.
This keyword has no parameters.
If the HLPCLR keyword is not specified, the help specifications are accumulated for all records on the
display and are active until the record containing the help specification either is cleared from the display
or is completely overlapped by another record.
Option indicators are allowed on this keyword.
The record specifying the HLPCLR keyword must contain at least one help specification. Because help
specifications are ignored for an override operation with USRDSPMGT specified, the use of HLPCLR
with USRDSPMGT and PUTOVR results in no online help being available for display. To maintain the
available online help, HELPCLR should be turned off when PUTOVR is in effect.
Example
The following example shows how to specify the HLPCLR keyword.
|...+....1....+....2....+....3....+....4....+....5....+....6....+....7....+....8
A
R RECORD1
USRDFN
A
HLPCLR
A
H
HLPARA(1 10 1 30)
A
HLPRCD(RECORDA FILE1)
A
H
HLPARA(4 10 4 30)
A
HLPDOC(A B C)
A
When RECORD1 is displayed, only the online help information associated with the two help
specifications defined in RECORD1 is available for display.
HLPCMDKEY (Help Command Key) keyword for display files
You use this record-level keyword to return control to your application program after a command
attention (CA) or command function (CF) key is pressed on an application help record format.
This keyword is specified on the application help record format. For control to return, the command key
must be specified on both the application record format and the application help record format.
This keyword has no parameters.
A CA or CF key must be specified either at the file level or on the help record containing the
HLPCMDKEY keyword. If no CAnn or CFnn keys are specified at the file level or on the help record, a
warning message (severity 10) is issued. If all the CAnn and CFnn keys specified at the file level and on
the same help record as the HLPCMDKEY keyword have option indicators, a warning message (severity
10) is issued. When a response indicator is specified on a CA or CF key on the application help record
format, a warning message (severity 10) is issued and the response indicator will be ignored.
128
System i: Programming DDS for display files
If you specify this keyword on the help record and the display station user presses one of the command
keys that is specified on both the application record and the application help record, the following case
happens:
v If the command key is a CAnn key, no input data from the application record format is transmitted to
the application program.
v If the command key is a CFnn key, input data from the application record format is transmitted to the
application program.
v The command key will be returned to the application program.
The command key must be specified on both the application record format and the application help
record format. If the command key is specified only on the application record format, the command key
will not be allowed when the application help record format is displayed. If the command key is
specified only on the application help record format, the command key will function as the Enter key and
control will not return to the application program.
You cannot specify HLPCMDKEY on subfile (SFL keyword), subfile control (SFLCTL keyword), or
user-defined (USRDFN keyword) record formats.
You cannot specify the HLPCMDKEY keyword in a file containing the USRDSPMGT keyword.
Option indicators are not valid for this keyword.
Example
The following example shows how to specify the HLPCMDKEY keyword. The first record is the
application record format and the second record is the application help record format.
|...+....1....+....2....+....3....+....4....+....5....+....6....+....7....+....8
00010A
R APPRCD
CA01
00020A
CA03
00030A
CF12(12)
00040A
CA04
00050A
HELP
00060A
H
HLPRCD(HELPRCD)
00070A
HLPARA(1 1 24 80)
00080A
8 2'THIS IS THE APPLICATION'
00090A
9 2'RECORD FORMAT'
00100A
INPUT1
10
B 12 10
00110A
INPUT2
10
B 13 10
00120A
INPUT3
10
B 14 20
00130A*
00140A
R HELPRCD
HLPCMDKEY
00150A
CA01(11)
00160A
CF03
00170A
CF05
00180A
CF12
00190A
5 8'SPECIFY COMPANY NAME'
00200A
6 9'SPECIFY STREET'
00210A
7 10'SPECIFY CITY, STATE, ZIP'
A
If the user is at the application help display, the following case occurs:
v If the CMD1 key is pressed, control is returned to the application program, but no data from the
application record format is transmitted to the application program. Response indicator 11 is not set on
because it was specified on the help record format rather than on the application record format.
v If the CMD12 key is pressed, control is returned to the application program and data from the
application record format is transmitted to the application program. Response indicator 12 is on.
DDS for display files
129
v If the CMD5 key is pressed, it functions as the Enter key. The same CA or CF keys must be specified
on both the application record format and the application help record format for control to be returned
to the application program.
v If the CMD3 key is pressed, it functions as the Enter key. The corresponding CA or CF keys must be
specified on both the application help record format and the application record format for control to be
returned to the program.
v If the CMD4 key is pressed, it results in a message indicating that the CMD4 key is not allowed. The
same CA or CF keys must be specified on both the application record format and the application help
record format in order for control to be returned to the application program.
HLPDOC (Help Document) keyword for display files
You use this file- or help-specification-level keyword to define the document as help information text for
a specific location on the display.
The format of the keyword is:
HLPDOC(online-help-information-text-label-name document-name folder-name)
The online-help-information-text-label-name parameter corresponds to a label in the online help
document and marks the point at which the document’s display begins.
The document-name parameter identifies the online document containing the online help information.
The folder-name parameter identifies the folder containing the document specified. Because folders can
reside inside other folders, and because any given folder or document name is only unique within its
containing folder, you might be required to concatenate several folder names together to identify a
document/folder. The folder name you specify on the HLPDOC keyword can be a simple folder name,
which follows the same syntax rules as the document name, or you can specify the folder name as a
concatenated name.
The document specified on an H specification level HLPDOC keyword is displayed if both of the
following conditions are true:
v The cursor is located in the help area (defined by HLPARA) for that H specification.
v The H specification is active. (The option indicator on the H specification level HLPDOC keyword
determines if the H specification is active.)
The document specified on a file level HLPDOC keyword is displayed when no help area for the active
records contains the current cursor location.
You cannot specify HLPDOC with HLPBDY, HLPPNLGRP, or HLPRTN.
Option indicators are valid for this keyword.
Example
The following example shows how to specify the HLPDOC keyword.
|...+....1....+....2....+....3....+....4....+....5....+....6....+....7....+....8
A
HELP
A
HLPDOC(START GENERAL.HLP HELP.F1)
A
R REC1
OVERLAY
A
H
HLPDOC(LBL1 HELP#1 HELP.F1)
A
HLPARA(10 3 12 50)
A
H
HLPARA(15 9 17 61)
A 90
HLPDOC(LBL2 HELP#2 HELP/FLD)
A
H
HLPARA(15 9 17 61)
A N90
HLPDOC(LBL3 HELP#3 HELP.F1/FLD)
A
130
System i: Programming DDS for display files
The HELP keyword enables the Help key.
The HLPDOC keyword at the file level specifies that the GENERAL.HLP document in the HELP.F1 folder
will be displayed starting at the START help label if the Help key is pressed and the cursor is not in a
help area defined by a HLPARA keyword at the H specification level.
At the H specification level:
v The first H specification indicates that the HELP#1 document in the HELP.F1 folder will be displayed
starting at the LBL1 help label if the Help key is pressed and the cursor is in positions 3 through 50 of
lines 10, 11, or 12.
v The second H specification indicates that the HELP#2 document in the HELP/FLD folder will be
displayed starting at the LBL2 help label if the REC1 record is put with indicator 90 on, the Help key is
pressed, and the cursor is in positions 9 through 61 of lines 15, 16, or 17.
v The third H specification indicates that the HELP#3 document in the HELP.F1/FLD folder will be
displayed starting at the LBL3 help label if the REC1 record is put with indicator 90 off, the Help key
is pressed, and the cursor is in positions 9 through 61 of lines 15, 16, or 17.
Related reference
DDS naming conventions
HLPEXCLD (Help Excluded) keyword for display files
You use this help-specification-level keyword to indicate that the online help information associated with
this help specification is not displayed as extended help, but is available as item-specific help.
This keyword has no parameters.
If you do not specify this keyword, extended help consists of the online help information associated with
both the file-level HLPPNLGRP keyword (if any) and the HLPPNLGRP keyword on all active help
specifications.
This keyword is allowed only on help-specifications that specify a HLPPNLGRP keyword.
At least one instance of each parameter on the HLPPNLGRP keyword should not have the HLPEXCLD
keyword specified. If all help specifications specifying a particular help panel group name are excluded,
an error message is issued at run time if the Help key is pressed when the cursor is located in a help area
associated with that help panel group name.
Option indicators are valid for this keyword.
Example
The following example shows how to specify the HLPEXCLD keyword.
|...+....1....+....2....+....3....+....4....+....5....+....6....+....7....+....8
A
R RECORD1
A
A
H
HLPARA(1
12
8
14)
A
HLPPNLGRP(R1 PNLA)
A
H
HLPARA(1
18
8
19)
A
HLPPNLGRP(R2 PNLA)
A
H
HLPARA(1
35
8
37)
A
HLPPNLGRP(R1 PNLA)
A
HLPEXCLD
A
H
HLPARA(1
49
8
50)
A
HLPPNLGRP(R2 PNLA)
A
HLPEXCLD
A
DDS for display files
131
In this example, the HLPEXCLD keywords prevent help modules R1 and R2 from being displayed twice
as extended help.
HLPFULL (Help Full) keyword for display files
You use this file-level keyword to indicate that the help text for the help panel group of the application is
displayed using the full screen rather than using windows.
This keyword has no parameters.
If you do not specify this keyword, the online help information is displayed in a window unless the
*HLPFULL option is specified for the user profile.
When you specify the HLPFULL keyword, you must specify the HLPPNLGRP keyword either at the file
level or at the help specification level.
Option indicators are not valid for this keyword.
Example
The following example shows how to specify the HLPFULL keyword.
|...+....1....+....2....+....3....+....4....+....5....+....6....+....7....+....8
A
HELP
A
HLPPNLGRP(GENERAL LIBA/PNL1)
A
HLPFULL
A
HLPTITLE('Sample Screen')
A
R RECOO1H
A
H
HLPARA(4 10 4 29)
A
HLPPNLGRP(NAMETAG LIBA/PNL1)
A
1 10'Sample Screen'
A
NAME1
20A B 2 10
A
When the Help key is pressed in cursor location line 4 positions 10 through 29, the help module
NAMETAG from LIBA/PNL1 is displayed using the full screen. If the Help key is pressed in any other
location, the help module GENERAL from LIBA/PNL1 is displayed using the full screen.
HLPID (Help Identifier) keyword for display files
You use this constant field-level keyword to specify an identifier for the constant in the field-level help.
The identifier you specify can be used on the HLPARA keyword to link help text to this constant field.
The format of the keyword is:
HLPID(help-identifier)
The help-identifier parameter is required and can be only a numeric value from 1 to 999. The value you
specify must be unique within the record you are defining.
Option indicators are not valid for this keyword.
Example
The following example shows how to specify the HLPID keyword:
|...+....1....+....2....+....3....+....4....+....5....+....6....+....7....+....8
A
R RECORD
HELP
A
H
HLPARA(*CNST 1)
A
HLPRCD(HLPCNST1 LIB1/FILE1)
A
H
HLPARA(*CNST 2)
132
System i: Programming DDS for display files
A
A
A
A
2
4
HLPRCD(HLPCNST2 LIB1/FILE1)
4'Constant field 1' HLPID(1)
4'Constant field 2' HLPID(2)
In this example, if the cursor is located on the text 'Constant field 1' on the display and the Help key
is pressed, record HLPCNST1 in file FILE1, library LIB1, is displayed as help text. If the cursor is located
on the text 'Constant field 2' on the display and the Help key is pressed, record HLPCNST2 in file
FILE1, library LIB1 is displayed as help text.
HLPPNLGRP (Help Panel Group) keyword for display files
You use this file-level or help-specification-level keyword to specify the source of the online help
information, defined by the user interface manager (UIM), that is to be displayed when the Help key is
pressed.
The format of the keyword is:
HLPPNLGRP(help-module-name [library-name/]panel-group-name)
The help module name is 1 to 32 characters long. Valid values for the first character in the name are
alphabetic characters A through Z. Valid values for subsequent characters are alphabetic characters A
through Z, numeric characters 0 through 9, slash (/), and underscore (_). If the name contains a slash or
underscore character, the name must be enclosed in single quotation marks.
The panel group name specifies the UIM-panel group object that contains the help module. It need not
exist when the display file is created. If you do not specify the library name, *LIBL is used to search for
the panel group object.
Every help specification must contain a HLPRCD, HLPDOC, or HLPPNLGRP keyword, but a display file
cannot contain both HLPPNLGRP and HLPRCD keywords, nor HLPPNLGRP and HLPDOC keywords.
If you specify the HLPPNLGRP keyword at the file level, you must specify the HELP keyword at the file
level. If there are no help specifications in the file, you must also specify the HLPTITLE keyword at the
file level.
If you specify the HLPPNLGRP keyword at the help specification level, you must specify a HELP and a
HLPTITLE keyword either at the file level or on the current record.
Option indicators are valid for this keyword.
Example
The following example shows how to specify the HLPPNLGRP keyword.
|...+....1....+....2....+....3....+....4....+....5....+....6....+....7....+....8
A
HELP
A
HLPPNLGRP(GENERAL LIBA/PANEL1)
A
HLPTITLE('Sample Screen')
A
HLPSCHIDX(QHSS1)
A
R REC001
A
H
HLPARA(4 10 4 29)
A
HLPPNLGRP(NAMETAG LIBA/PANEL1)
A
H
HLPARA(5 10 5 19)
A
HLPPNLGRP(OPTION1TAG PANEL2)
A
1 10'Sample Screen'
A
NAME1
20A B 4 10
A
OPTION1
10A B 5 10
A
DDS for display files
133
If the cursor is located on line 4 between positions 10 and 29 when the Help key is pressed, help module
NAMETAG from UIM panel group PANEL1 in LIBA is displayed. If the cursor is located on line 5
between positions 10 and 19, help module OPTION1TAG from UIM panel group PANEL2 in the library
list is displayed. If the cursor is located anywhere else when the Help key is pressed, help module
GENERAL in panel group PANEL1 in LIBA is displayed.
HLPRCD (Help Record) keyword for display files
You use this file-level or help-specification-level keyword to specify the record format containing the
online help information to be displayed when the Help key is pressed.
The format of the keyword is:
HLPRCD(record-format-name [[library-name/]file-name])
The record format can exist either in the file being defined or in the file specified on HLPRCD. If you do
not specify the file name, the record format must exist in the file being defined.
The file-name parameter identifies the file containing the record format. The current library list (*LIBL) at
program run time is used if you do not specify the library name.
The record specified on an H-specification-level HLPRCD keyword is displayed if both of the following
conditions are true:
v The cursor is located in the help area (defined by HLPARA) for that H specification.
v The H specification is active. (The option indicator on the H-specification-level HLPRCD keyword
determines whether the H specification is active.)
The record specified on a file-level HLPRCD keyword is displayed when no help area for the active
records contains the current cursor location.
Option indicators are valid for this keyword.
Example
The following example shows how to specify the HLPRCD keyword.
|...+....1....+....2....+....3....+....4....+....5....+....6....+....7....+....8
A
HELP
A
HLPRCD(DFTHELP HELPFILE)
A
R RECORD1
A
H
HLPARA(1 1 24 80)
A 99
HLPRCD(ERRHELP)
A
H
HLPARA(1 1 1 80)
A
HLPRCD(HELPRCD1 HELPFILE)
A
FIELD1
10A
1 10
A
When indicator 99 is set on, the online help information in the record ERRHELP (which must exist in this
display file) displays when the Help key is pressed. If indicator 99 is set off and the cursor is located on
the first line when the Help key is pressed, the record HELPRCD1 in file HELPFILE will display.
Otherwise, the online help information from the record specified on the file-level HLPRCD keyword will
display when the Help key is pressed.
HLPRTN (Help Return) keyword for display files
You use this file-level or record-level keyword to return control to your program when you press the
Help key.
If HLPRTN is not specified, online help information associated with the current cursor location is
displayed.
134
System i: Programming DDS for display files
See “System/36 environment considerations for display files” on page 261 for special considerations
when you specify the HLPRTN keyword in files that are used in the System/36 environment.
The format of the keyword is:
HLPRTN[(response-indicator ['text'])]
If you specify a response indicator, the response indicator is set on and returned to your program. No
input data is transmitted from the device. Processing is similar to that of a command attention key.
The optional text is included on the computer printout created at program compilation time to explain
the intended use of the indicator. This text has no function in the file or program other than as a
comment. The single quotation marks are required. If you specify more than 50 characters between the
single quotation marks, the text is truncated to 50 characters on the program computer printout.
HLPRTN at either the file or record level takes priority over any HLPRCD, HLPPNLGRP, or HLPDOC
keywords. Any HLPRTN keyword found in the file is processed before any other applicable help
keyword.
When you specify HLPRTN, control might or might not return to your program, depending on whether
you use an option indicator:
v If you specify HLPRTN without an option indicator, control returns to your program when you press
the Help key. A warning message appears at creation time if you specify an unoptioned HLPRTN
keyword on a file or record containing H specifications.
v If you specify HLPRTN with an option indicator, control returns to your program if the option
indicator is on at the time the record is displayed. The H specifications are used if the option indicator
is off.
Option indicators are valid for this keyword.
Example 1
The following example shows how to use the HLPRTN keyword.
|...+....1....+....2....+....3....+....4....+....5....+....6....+....7....+....8
A
HELP
A
HLPRCD(GENERAL)
A
R RECORD1
A 02
HLPRTN
A
H
HLPARA(1 1 3 10)
A
HLPRCD(HELPREC1)
A
FIELD1
10A B 2 2
A
R RECORD2
HLPRTN
A
FIELDA
5A B 10 7
A
If indicator 02 is on when RECORD1 is written to the display, control will return to the user program
when the Help key is pressed. If indicator 02 is off, online help information record HELPREC1 or
GENERAL will be displayed when the Help key is pressed, depending on the position of the cursor.
When RECORD2 is displayed, control will return to the user program when the Help key is pressed.
Example 2
|...+....1....+....2....+....3....+....4....+....5....+....6....+....7....+....8
A
HELP
A 01
HLPRTN
A
HLPRCD(GENERAL)
A
R RECORD1
A
H
HLPARA(1 1 3 10)
A
HLPRCD(HELPREC1)
DDS for display files
135
A
A
A
A
FIELD1
R RECORD2
FIELDA
10A
5A
B
2
2
B 10
7
If indicator 01 is on, control returns to your program when you press the Help key regardless of the
cursor position.
Related reference
“HELP (Help) keyword for display files” on page 123
You use this file-level or record-level keyword to enable the Help key.
“HLPARA (Help Area) keyword for display files” on page 124
You use this help-specification-level keyword to define a rectangular area on the display.
HLPSCHIDX (Help Search Index) keyword for display files
You use this file-level keyword to enable the index search function (F11 on the Help display) and specify
the search index object used for the index search.
The format of the keyword is:
HLPSCHIDX([library-name/]search-index-object)
The search index object, created using the CRTSCHIDX command, contains the data to be made available
when the function key is pressed to start the index search function.
If you do not specify a library name, *LIBL is used to search for the search index object. The search index
object need not exist when the display file is created.
HLPSCHIDX is valid only when at least one HLPPNLGRP keyword is specified in the file.
HLPSCHIDX keyword cannot be specified with the HLPSHELF keyword.
Option indicators are not valid for this keyword.
Example
The following example shows how to specify the HLPSCHIDX keyword.
|...+....1....+....2....+....3....+....4....+....5....+....6....+....7....+....8
A
HELP
A
HLPTITLE('Sample Screen')
A
HLPPNLGRP(GENERAL LIBA/PANEL1)
A
HLPSCHIDX(LIBA/SEARCH1)
A
R REC001H
A
H
HLPARA(4 10 4 29)
A
HLPPNLGRP(NAMETAG LIBA/PNL1)
A
1 10'Sample Screen'
A
NAME1
20A B 4 10
A
HLPSEQ (Help Sequencing) keyword for display files
You use this record-level keyword to define the sequencing of text records for Page key processing.
The format of the keyword is:
HLPSEQ(group-name sequence-number)
The group name is a 1- to 10-character name used to associate the primary help format with the
secondary help formats in the help file. When a Page Up or Page Down key is pressed on an online help
136
System i: Programming DDS for display files
information display, those record formats in the help file that have the same help group name as the
record currently displayed as online help information are displayed.
The sequence number is a numeric value (0 to 99) used to order the record formats within the help
group. This order determines the sequence in which the record formats are displayed as secondary online
help information.
Duplicate numbers within a group are not allowed.
A help record format that does not have the HLPSEQ keyword coded is considered to be the only record
in its group.
You cannot specify HLPSEQ on subfile (SFL keyword) or user-defined (USRDFN keyword) record
formats.
Option indicators are not valid for this keyword.
Example
The following example shows how to specify the HLPSEQ keyword.
|...+....1....+....2....+....3....+....4....+....5....+....6....+....7....+....8
A
R RECORD1
HLPSEQ(HGROUP1 10)
A
5 1'Help text ...'
A
RECORD1 is in the help group HGROUP1 and has a sequence number of 10.
HLPTITLE (Help Title) keyword for display files
You use this file-level or record-level keyword to define the default title of online help information in
panel group. The help information is displayed using the full screen.
This should be the name of the display you were on when you pressed the Help key. Use this keyword
only on a full-screen help display and when no help title is specified in the help source.
The format of the keyword is:
HLPTITLE('text')
The text can be up to 55 characters long.
If you specify the HLPTITLE keyword in a file, the file must contain at least one HLPPNLGRP keyword
at either the file or help specification level.
If you specify a file-level HLPPNLGRP keyword and no help specifications are defined in the file, the
HLPTITLE keyword is required at the file level.
If you do not specify a HLPTITLE keyword at the file level, at least one HLPTITLE keyword is required
on every record that contains help specifications. The HLPTITLE keyword is not valid on records that do
not contain help specifications.
Option indicators are not valid on a file-level HLPTITLE keyword. Option indicators are allowed on
record-level HLPTITLE keywords and must be specified on each HLPTITLE keyword if the record
contains multiple HLPTITLE keywords. You can specify a maximum of 15 HLPTITLE keywords on a
record if all have option indicators. At run time, the first HLPTITLE keyword in effect is used. If no
HLPTITLE keyword is in effect for the record, a message is issued.
DDS for display files
137
Example
The following example shows how to specify the HLPTITLE keyword.
|...+....1....+....2....+....3....+....4....+....5....+....6....+....7....+....8
A
HELP
A
HLPPNLGRP(GENERAL LIBA/PANEL1)
A
R REC001
A 90
HLPTITLE('Sample Screen 1')
A N90
HLPTITLE('Sample Screen 2')
A
H
HLPARA(4 10 4 29)
A
HLPPNLGRP(NAMETAG LIBA/PANEL1)
A
H
HLPARA(6 10 6 19)
A 10
HLPPNLGRP(OPTION2TAG PANEL2)
A 90
1 10'Sample Screen 1'
A N90
1 10'Sample Screen 2'
A
NAME1
20A B 4 10
A 10
OPTION2
10A B 6 10
A
Two titles are associated with the record, so the HLPTITLE keyword is specified at the record level,
where option indicators are used. The state of option indicator 90 determines which title is displayed on
both the application display and the online help information display. Using an indicator and its
complement guarantees that one of the two HLPTITLE keywords is in effect.
HOME (Home) keyword for display files
You use this file-level or record-level keyword to specify that you want to recognize and handle the
Home key through your program.
See “System/36 environment considerations for display files” on page 261 for special considerations
when you specify the HOME keyword in files that are used in the System/36 environment.
The format of the keyword is:
HOME[(response-indicator ['text'])]
If you press the Home key and the cursor is not already at the home position, the cursor returns to the
home position, even if you do not specify the HOME keyword.
If the cursor is already at the home position when the Home key is pressed, the i5/OS operating system
returns control to your program as it does when a command attention key is pressed (no data is received
from the device). In this situation, if you have not specified the HOME keyword, the i5/OS operating
system sends a message indicating that the key is not valid at that time.
The home position is one of the following positions (in order of priority):
v The cursor position specified by the last output operation
v The first unprotected input field
v Position 1, line 1
The optional text is included on the computer printout created at program compilation time to explain
the intended use of the indicator. This text’s only function in the file or the program is as a comment. The
single quotation marks are required. If you specify more than 50 characters between the single quotation
marks, the text is truncated to 50 characters on the program computer printout.
Option indicators are valid for this keyword.
138
System i: Programming DDS for display files
Example
The following example shows how to specify the HOME keyword so that if the cursor is in the home
position when the Home key is pressed, control returns to the program with response indicator 95 set on.
|...+....1....+....2....+....3....+....4....+....5....+....6....+....7....+....8
00030A
HOME(95 'Home key')
A
HTML (Hypertext Markup Language) keyword for display files
You use this field-level keyword on an unnamed constant field to have Hypertext Markup Language
(HTML) tags sent along with the 5250 data stream.
If the data stream is sent to a 5250 Workstation Gateway device, the HTML tags will be processed on the
HTML browser. If the data stream is not sent to a 5250 Workstation Gateway device, the HTML keyword
is ignored.
The format of this keyword is:
HTML('value')
or
HTML(&program-to-system-field);
A parameter is required for the HTML keyword. The parameter must be a valid HTML tag enclosed in
single quotation marks, or in a program-to-system field. The program-to-system field can be any legal
length and must be alphanumeric (A in position 35). The DDS compiler will not check the HTML syntax
of the specified parameter. The browser that receives the HTML at run time will check the syntax.
The following keywords are not allowed with the HTML keyword:
COLOR
DATE
DFT
DSPATR
EDTCDE
EDTWRD
HLPID
MSGCON
NOCCSID
OVRATR
PUTRETAIN
SYSNAME
TIME
USER
Option indicators are not valid for this keyword. However, option indicators are allowed on the constant
field.
The HTML keyword is not allowed in a field of a subfile record.
Example
The following example shows how to specify the HTML keyword:
|...+....1....+....2....+....3....+....4....+....5....+....6....+....7....+....8
A
A
R RECORD
DDS for display files
139
A
A
A
A
7 20HTML('<TITLE>')
7 20HTML(&TAG);
7 21HTML('</TITLE>')
TAG
20A
P
HTML is a tag language where the order of the tags determines when they are processed. Row and
column have no meaning in an HTML document. In this case, the row and column determine the order
in which the HTML tags are sent to the browser. If the constant fields that contain the HTML keyword
have the same row and column value, they will be processed in the order that they appear in the DDS
source. For information about how to resolve HTML field overlap, see Chapter 6 of the Application
Display Programming book
.
If the ENHDSP (Enhanced Display) parameter on the CRTDSPF is set to *NO, the HTML keyword will be
ignored. This will give users the ability to turn off the HTML keywords without recompiling.
INDARA (Indicator Area) keyword for display files
You use this file-level keyword to remove option and response indicators from the buffer (also called the
record area) and to place them in a 99-byte separate indicator area.
This keyword has no parameters.
Specifying INDARA provides the following advantages:
v Simplifies COBOL programming when both option and response indicators are used. If the same
indicator is used as a response indicator and as an option indicator, both indicators always have the
same value, regardless of the order in which they are specified in the DDS.
v Assists the RPG programmer using program-described WORKSTN files.
If you specify INDARA, you can add, change, or delete option and response indicators in the DDS and
re-create the file without re-creating the high-level language program. This is true because the field
locations in the buffer have not changed and therefore the level check data has not changed. However, if
the program is to take advantage of the new indicators, it still needs to be changed and re-created.
If you specify INDARA, some high-level languages might require that you specify in your program that a
separate indicator area is to be used. See the appropriate high-level language manual.
If you specify INDARA, the LOGINP and LOGOUT keywords do not log response or option indicators
when your program sends I/O operations. This is because response and option indicators do not appear
in the input or output buffers.
Option indicators are not valid for this keyword.
Example
The following example shows how to specify the INDARA keyword.
|...+....1....+....2....+....3....+....4....+....5....+....6....+....7....+....8
00010A
INDARA
00020A
CF01(01 'End program')
00030A
R PROMPT
00040A
ACTNBR
10
B 2 2
00050A 41
ERRMSG('Account number +
00060A
not found' 41)
A
INDARA has been specified; option indicator 41 and response indicators 01 and 41 are removed from the
buffer for record format PROMPT and placed in the separate indicator area. Only ACTNBR, a named
input/output field, remains in the buffer for record format PROMPT.
140
System i: Programming DDS for display files
INDTXT (Indicator Text) keyword for display files
You use this file-level, record-level, or field-level keyword to associate a descriptive text (indicating intent
or use) with a specific response or option indicator. You can specify the keyword once for each response
and option indicator.
The format for the keyword is:
INDTXT(indicator 'indicator-text')
If you specify this keyword, indicator-text is a required parameter value. The text is included on the
computer printout created at program compilation time to explain the intended use of the indicator. This
text’s only function in the file or the program is a comment. The single quotation marks are required. If
you specify more than 50 characters between the single quotation marks, the text is truncated to 50
characters on the program computer printout.
Option indicators are not valid for this keyword.
Note: The INDTXT keyword by itself does not cause the specified indicator to appear in either the input
or the output record area. It merely provides text to be associated with the indicator. If the
indicator has not been specified elsewhere (as either an option indicator or a response indicator),
then the text is lost without a diagnostic message. When an indicator has been given a text
assignment (either by this keyword or the response indicator text), no other text assignment is
allowed.
Example
The following example shows how to specify the INDTXT keyword.
|...+....1....+....2....+....3....+....4....+....5....+....6....+....7....+....8
00010A
INDTXT(02 'Alternate month')
00020A
R MASTER
00030A
MTH
2 10
00040A 02
ALTMTH
2 10
A
INDTXT describes the use of option indicator 02. In a compiler computer printout for a high-level
language, ’Alternate month’ will be printed as a comment with the description of indicator 02.
INVITE (Invite) keyword for display files
You use this file-level or record-level keyword to invite the device for a later read operation.
To send an invite to a specific device, your program sends an output operation to the device with the
INVITE keyword in effect. If the record format used has output-capable fields, the data is sent to the
device before the device is invited.
This keyword has no parameters.
INVITE must be used if the display file can have multiple acquired devices and your program does read
from invited devices operations. This is because a read from invited devices to a multiple device display
file only returns a record from one of the devices that was invited. If you want all the acquired devices to
be able to return data, an output operation with INVITE in effect must be sent to each device before the
read from invited devices. Even if there is only one device acquired on the multiple device file, the device
must be invited via INVITE before a read from invited devices.
INVITE also gives you the ability to create a subset of acquired devices that are eligible to respond on a
read from invited devices. For example, if ten devices are currently acquired to the file but only three
DDS for display files
141
devices were invited, the next read from invited devices operation returns a record from one of the three
invited devices. This is true even if the other devices have data available.
INVITE provides some performance improvement. Normally a read request is issued to a device when
your program sends an input operation. However, INVITE allows you to request the read when you
issue the output operation. After the output operation is complete, your program can do other processing
while the device is issuing data and the i5/OS operating system is processing the received data. This can
be a significant improvement if the device is remote.
For specific instructions on when an invite operation is necessary and how to specify a read from invited
devices operation in your program, see the appropriate high-level language manual.
INVITE cannot be specified at both the file and record level and cannot be specified with the subfile
keyword (SFL).
Option indicators are valid for this keyword.
Special considerations when using the INVITE keyword
The following list shows special considerations when you use the INVITE keyword:
v An input operation sent to a specific device does not require an invite operation. Input operations with
a specified record format name or device are directed to one device. If that device has an invite
outstanding at the time of the input operation, the invite operation is deleted after the input operation
is completed.
v After an invite operation has been sent to a device, the only valid operations (in addition to a
read-operation-from-invited-devices operation) are these:
– An input operation to a specific device.
– An output operation with data that tries to cancel the invite operation. If the cancel operation is
successful, the data is written. If the INVITE keyword is in effect on the output operation, the device
is invited again. If the cancel operation is not successful (because the data has already been received
by the system), the output operation fails. Your program must perform an input operation to process
the data. The input operation erases the invite operation for that device.
v On a read operation from invited devices operation to a display file, only data from devices with an
outstanding invite operation are considered. The input operation waits for data from any of the invited
devices. (See the WAITRCD parameter on the Create Display File (CRTDSPF) and Change Display File
(CHGDSPF) commands.) If none of the invited devices responds before the wait time ends, a notify
message is sent and no data is returned. All invited devices remain invited.
v If more than one device obtained by the display file has an invite operation outstanding, a
read-operation-from-invited-devices operation returns the next available record from one of the invited
devices. If records are received from more than one device before this input operation, the other
records are kept for subsequent input operations.
v When a read operation from invited devices operation to a display file returns a record to your
program from an invited device, the invite operation for that device is deleted. Other devices that have
an invite outstanding remain invited. The device that sent the record your program read must be
invited again if you want to receive data from this device on a later read from invited devices
operation.
v If no device was invited or if a device was invited but the job was canceled with the controlled option,
a read operation from invited devices operation to a display file results in a notify message and no
data is returned to your program. All invited devices remain invited.
v If you want to invite a device but have no data to send it, issue an output operation using a record
format containing no output-capable fields with INVITE in effect.
142
System i: Programming DDS for display files
v After the first record is received from an invited display device, the device should not be re-invited
until all the record formats on the display with input-capable fields are read by your program. Your
program can read those other record formats if you specify the record format name and the device
name on the read operation.
v If your display file has the delayed write option (DFRWRT(*YES) parameter on the (Create Display File
(CRTDSPF) and Change Display File (CHGDSPF) commands), an output operation with the INVITE
keyword in effect causes the delayed output to appear on the display before the device is invited.
Example
The following example shows how to specify the INVITE keyword.
|...+....1....+....2....+....3....+....4....+....5....+....6....+....7....+....8
00010A 01
INVITE
00020A
R RCD1
00030A
FLD1
10
2 2
00030A
FLD2
5
2 24
A
INVITE is in effect only when option indicator 01 is set on.
INZINP (Initialize Input) keyword for display files
You use this record-level keyword to initialize input/output fields without necessarily sending the
initialized data to the display when the PUTOVR and ERASEINP(*ALL) keywords are both in effect.
This keyword has no parameters.
INZINP is particularly useful for applications that perform data entry from remote workstations. It can
reduce line traffic between the system unit and the remote workstation.
The following steps describe how this keyword is used:
1. An output operation displays an input/output field for which the OVRDTA or OVRATR keyword is
in effect. The system initializes the input save area to the program value of the field. For example, if
the program sets NAME1 to the name Bob, the input save area contains the name Bob.
2. An input operation places data from the workstation in an input buffer. If the workstation user did
not key into the input-capable field and the DSPATR(MDT) keyword is not in effect for the field, the
field does not return data from the workstation. The system retrieves data from the input save area
and places it in the input buffer for use by the program. Thus, all input-capable fields have data in
the input buffer, either from the workstation or from the input save area.
3. On another output operation, the following cases might occur:
v If the INZINP and OVRDTA keywords are not in effect, the input save area is unchanged, even if
the program changed the field value. For example, if the program changes the field value to the
name Tom, the input save area will still have either the value entered by the workstation user or
the name Bob, the earlier program value.
v If INZINP is in effect, the input save area will have the current program value. The current
program value is sent to the display for fields for which the OVRDTA keyword is in effect.
If the OVRDTA keyword is not in effect on an output operation, the program must clear the output
buffer for the fields with the OVRDTA keyword specified to ensure that the input save area
matches the fields on the display (which are all blanks after the output operation).
Note: If the ERASEINP(*ALL) keyword is in effect for the output operation, input-capable fields are
cleared at the display device (on the display), but the input save area is not cleared. For the
contents of the input save area, see Table 8 on page 144 and Table 9 on page 144. Fields with the
DFT keyword specified are initialized with the value specified for the DFT keyword even if the
fields are not selected for display. The values are maintained unless the application program selects
DDS for display files
143
the fields for display, then changes their data values. This keyword requires the PUTOVR,
OVERLAY, and ERASEINP(*ALL) keywords to be specified at the record level.
The following tables show the effect of the ERASEINP(*ALL) and PUTOVR keywords with and without
the INZINP, OVRATR or OVRDTA keywords.
Table 8. INZINP Input/output fields
OVRATR or OVRDTA keyword
INZINP keyword
Contents of input save area
Not specified
Specified but not in effect
Specified but not in effect
OVRATR specified and in effect
OVRATR specified and in effect;
OVRDTA not specified or not in effect
Does not apply
Specified but not in effect
Specified and in effect
Does not apply
Does not apply
Previous
Previous
Program
Program
Previous
OVRATR keyword
INZINP keyword
Contents of input save area
Not specified
Specified and in effect
Specified but not in effect
Does not apply
Does not apply
Does not apply
Previous contents
Previous contents
Character fields: blanks
Numeric fields: zeros
contents
contents
value (not sent to display)
value (also sent to display)
contents (not sent to display)
Table 9. INZINP input-only fields
ERASEINP(*ALL) keyword
You can set the input save area to blanks and zeros to match the fields cleared at the workstation by the
ERASEINP(*ALL) keyword.
About this task
Complete the following tasks:
1. Specify the same option indicators for INZINP as for ERASEINP(*ALL), PUTOVR, and OVERLAY
keywords.
2. Specify OVRDTA or OVRATR for all input/output fields.
Set option indicators off for these keywords if you do not want to send data or attributes to the
device. If you enable OVRATR, also enable OVRDTA.
3. Specify the OVRATR keyword for all input-only fields.
Set option indicators off for this keyword if you do not want to send attributes to the device.
4. Set all input/output fields to blanks (for character fields) or zeros (for numeric fields) before the
output operation.
Results
A warning message appears at file creation time if the INZINP keyword is specified on a record with the
DSPMOD keyword. At run time, the INZINP keyword is ignored when the display mode changes.
Option indicators are valid for this keyword.
The following example shows how to specify the INZINP keyword.
|...+....1....+....2....+....3....+....4....+....5....+....6....+....7....+....8
00010A
R FMT1
00020A 77
PUTOVR OVERLAY ERASEINP(*ALL)
00030A 77
INZINP
00040A
7 8'CUSTOMER NUMBER'
144
System i: Programming DDS for display files
00050A
00060A
00070A
00080A
00090A
00100A
00110A
00120A
00130A
00140A
00150A
00160A
00170A
00180A
A
CUSNBR
6
I
NAME
25
B
ADDR1
25
B
ADDR2
25
B
LIMIT
4
0I
N77
N77
N77
N77
N77
7 26
OVRATR
9 12'CUSTOMER NAME'
9 30
OVRATR
10 2'CUSTOMER ADDRESS LINE 1'
10 30
OVRATR
11 2'CUSTOMER ADDRESS LINE 2'
11 30
OVRATR
12 9'NEW CREDIT LIMIT'
12 30
OVRATR
Example details
This example illustrates the following points:
1. For the first output operation, the user program sets off option indicator 77. Therefore, the PUTOVR,
ERASEINP, and INZINP keywords are not in effect. This has the following effect:
v Fields NAME, ADDR1, and ADDR2 are sent to the workstation.
v The input save area contains:
CUSNBR
All blanks
NAME
The program value (which appears on the display)
ADDR1
The program value (which appears on the display)
ADDR2
The program value (which appears on the display)
LIMIT
All zeros
2. For the second output operation, the user program sets on option indicator 77. This has the following
effect:
v All input-capable fields are cleared at the workstation.
v No fields are sent to the workstation.
v The input save area contains:
CUSNBR
All blanks
NAME
The program value (not sent to the display)
ADDR1
The program value (not sent to the display)
ADDR2
The program value (not sent to the display)
LIMIT
All zeros
Note: If fields NAME, ADDR1, and ADDR2 had been set to blanks before this second output operation,
the input save area would contain all blanks and zeros.
DDS for display files
145
INZRCD (Initialize Record) keyword for display files
You use this record-level keyword to specify that if this record is not already on the display, it is to be
written to the display before an input operation is sent from the program that specifies this record name.
If this record is already on the display, the keyword is ignored. The performance of this implicit output
operation is i5/OS program-initiated; its only purpose is to format the display when an input operation is
performed.
This keyword has no parameters.
This keyword does not apply to output operations.
If the INZRCD keyword is not specified, your program receives an error if it tries to read a record that is
not on the display.
When the INZRCD keyword is processed, the following special conditions exist:
v For output-only fields, no user data is available. The field appears on the display as blanks. Any
editing specified is ignored. The BLKFOLD keyword does not affect the display.
v For input/output fields, no user data is available. The field appears on the display as blanks. The input
save area is initialized in the same way as uninitialized input-only fields (blanks or zeros, depending
on the data type).
v Constants and input-only fields appear the same as when displayed using an explicit output operation.
v Hidden fields are returned on an input operation as blanks or zeros.
v Message and program-to-system fields are ignored.
v The LOGOUT keyword is ignored because there is no output buffer to log.
v The ERRMSG and ERRMSGID keywords are ignored because the record format is not already on the
display.
v The SFLMSG and SFLMSGID keywords are ignored.
v All other optioned keywords and fields are processed as if they were optioned.
Note: In order for the INZRCD function to be performed, your program must specify a record format
name when issuing an input operation that contains this keyword. The record format used for the
input operation must specify the INZRCD keyword.
Option indicators are not valid for this keyword.
Example
The following example shows how to specify the INZRCD keyword.
|...+....1....+....2....+....3....+....4....+....5....+....6....+....7....+....8
00274A
R REC4
INZRCD
A
KEEP (Keep) keyword for display files
You use this record-level keyword to keep the display from being deleted when the display file is closed.
The entire display is kept if any of the records on the display have KEEP specified. The default causes the
entire display to be deleted when the file is closed.
In addition, the name of the first, uppermost record on the display that has the KEEP attribute is saved
by the i5/OS operating system for possible use by subsequent programs. The name kept can be used by a
146
System i: Programming DDS for display files
subsequent program that does not specify a record name on its first input operation. This keyword
enables you to leave data on the display for review after your program ends, or use that data as input for
subsequent programs.
This keyword has no parameters.
This keyword cannot be specified with the following keywords:
ALWROL
CLRL
SLNO
A warning message appears at file creation time if the KEEP keyword is specified on a record with the
DSPMOD keyword. At run time, the KEEP keyword is ignored when the display mode changes.
Option and response indicators are not valid for this keyword.
Example
The following example shows how to specify the KEEP keyword.
|...+....1....+....2....+....3....+....4....+....5....+....6....+....7....+....8
00061A
R REC46
KEEP
A
LOCK (Lock) keyword for display files
You use this record-level keyword to specify that the keyboard is to remain locked after an output
operation.
Normally, the keyboard automatically unlocks after an output operation. The LOCK keyword is used
when there are several consecutive output operations that contain input fields.
This keyword has no parameters.
If this keyword is not specified, the workstation user can type data into a field when a subsequent output
operation sends data to the display. In this case, the cursor location might be changed and the key entry
data lost.
Note: The default on an output operation is to unlock the keyboard. If the keyboard is locked when an
input operation is sent, it is automatically unlocked.
This keyword is independent of other keywords that affect the output operation.
Option indicators are valid for this keyword.
Example
The following example shows how to specify the LOCK keyword.
|...+....1....+....2....+....3....+....4....+....5....+....6....+....7....+....8
00011A
R REC1
LOCK
A
LOGINP (Log Input) keyword for display files
You use this record-level keyword to specify that the input buffer for this record format is to be written
to the job log each time the i5/OS operating system performs an input operation for the record.
DDS for display files
147
The data logged includes the values of input-capable fields, hidden fields, and response indicators
specified in the record format you are defining. It also includes output fields if the record format is a
subfile record format. (Response indicators are not logged if the INDARA keyword is specified for the file
you are defining.) This keyword is used for debugging and other exception conditions. The job log
cannot be read by your program.
This keyword has no parameters.
The i5/OS operating system ignores LOGINP for either of the following conditions:
v There are no input-capable fields, no hidden fields, and no response indicators in the record format.
v The record format is a subfile record format for a message subfile.
Option indicators are not valid for this keyword.
Example
The following example shows how to specify the LOGINP keyword.
|...+....1....+....2....+....3....+....4....+....5....+....6....+....7....+....8
00072A
R REC24
LOGINP
A
LOGOUT (Log Output) keyword for display files
You use this record-level keyword to specify that the output buffer for this record format is to be written
to the job log each time the i5/OS operating system performs an output operation for the record.
The data logged includes the values of output-capable fields, hidden fields, and option indicators
specified in the record format you are defining. (Option indicators are not logged if the INDARA
keyword is specified for the file you are defining.) The LOGOUT keyword is used for debugging and
other exception conditions. The job log cannot be read by your program.
This keyword has no parameters.
The i5/OS operating system ignores LOGOUT for either of the following conditions.
v There are no output-capable fields, no hidden fields, and no option indicators in the record format.
v The record format is a subfile record format for a message subfile.
Option indicators are valid for this keyword.
Example
The following example shows how to specify the LOGOUT keyword.
|...+....1....+....2....+....3....+....4....+....5....+....6....+....7....+....8
00021A
R REC25
LOGOUT
A
LOWER (Lower) keyword for display files
The LOWER keyword is equivalent to the CHECK(LC) keyword.
The CHECK keyword is preferred.
Related reference
“CHECK (Check) keyword for display files” on page 53
You use this keyword to perform a number of functions, depending on the parameter values specified.
148
System i: Programming DDS for display files
MAPVAL (Map Values) keyword for display files
You use this field-level keyword to map field data to a different value during input and output
operations.
This keyword is only valid with the date (L), time (T), or timestamp (Z) data types.
The format of the keyword is:
MAPVAL((program-value-1 system-value-1)
[(program-value-2 system-value-2) ...
(program-value-100 system-value-100)])]
You can specify the program value and the system value either as explicit values or as the *BLANK or
*CUR special values.
You must specify an explicit value within single quotation marks that matches the format and separator
values for the corresponding field. The explicit value must also be a valid date or time. The following list
indicates how the formats and separators are determined:
v If the explicit value is a date (L) value, you must use the format that the DATFMT keyword specifies.
If the DATFMT keyword is not specified or if DATFMT specifies *JOB, then you must use the *ISO
format. Also, you must use the separator that the DATSEP keyword specifies. If the DATSEP keyword
is not specified, or if DATSEP specifies the *JOB separator, a slash (/) must be used for the separator.
v If the explicit value is a time (T) value, you must use the format that the TIMFMT keyword specifies. If
the TIMFMT keyword is not specified, you must use the *ISO format. Also, you must use the separator
that the TIMSEP keyword specifies. If the TIMSEP keyword is not specified or if TIMSEP specifies the
*JOB separator, you must use a colon (:) for the separator.
v If the explicit value is a timestamp (Z) value, you must use the yy-mm-dd-hh.mm.ss.mmmmmm format.
The *BLANK special value indicates field data that is composed of all blanks. The *CUR special value
indicates that the date, time, or timestamp makes up the current field data, depending on the data type
of the field.
During an output operation, the field data is compared to each program-value on the MAPVAL keyword
in the order in which the program-values are specified. For the first match that is found, the
corresponding system-value replaces the current field data. If a match does not exist, the field data does
not change.
During an input operation, the field data is compared to each system-value on the MAPVAL keyword in
the order in which the system-values are specified. For the first match that is found, the corresponding
program-value replaces the current field data. If a match does not exist, the field data remains the same.
Option indicators are not valid for this keyword, although you can use option indicators to condition the
field for which it is specified.
Example
The following example shows how to specify the MAPVAL keyword.
|...+....1....+....2....+....3....+....4....+....5....+....6....+....7....+....8
00010A
00020A
R RECORD
00030A
DATFLD1
L
DATFMT(*MDY) DATSEP('/')
00040A
MAPVAL(('01/01/40' *BLANK))
On output, if the field data equals ’01/01/40’, the field data is changed to all blanks. On input, if the
field data is blank, the field data is changed to ’01/01/40’.
DDS for display files
149
MDTOFF (Modified Data Tag Off) keyword for display files
You use this record-level keyword with the OVERLAY keyword to set off modified data tags (MDTs) for
input-capable fields in record formats already on the display.
The format of the keyword is:
MDTOFF[(*UNPR | *ALL)]
The MDTs are set off when your program sends an output operation to the record format you are
defining.
To set off MDTs for unprotected fields only (those without the DSPATR(PR) keyword in effect), specify
the *UNPR parameter value (this is also the default if no parameter value is specified). To set off MDTs
for all input-capable fields, specify the *ALL parameter value.
Your program can select the DSPATR(MDT) keyword for fields in the same record format for which it
selects MDTOFF (any parameter). If so, these fields are displayed with their MDTs set on.
The ERASEINP(*ALL) keyword implies MDTOFF(*UNPR) unless MDTOFF(*ALL) is specified.
If the ERASEINP(*MDTON) keyword is specified with MDTOFF(*ALL), the end effect is as if the
ERASEINP(*ALL) keyword and MDTOFF(*ALL) are both specified. This is also true if the ERASEINP
keyword is specified with no parameter value.
Option indicators are valid for this keyword.
MDTOFF is not valid for the subfile record format (identified by the SFL keyword). It is valid for all
other record formats for which OVERLAY keyword is also specified.
Example
The following example shows how to specify the MDTOFF keyword.
|...+....1....+....2....+....3....+....4....+....5....+....6....+....7....+....8
00010A
R RECORD1
OVERLAY MDTOFF
00020A
FLD1
6
B 2 2
00030A
FLD2
6
B 3 2
00040A*
00050A
R RECORD2
OVERLAY MDTOFF(*UNPR)
00060A
FLD21
6
B 4 2
00070A
FLD22
6
B 5 2
00080A*
00090A
R RECORD3
OVERLAY MDTOFF(*ALL)
00100A
FLD31
6
B 6 2
00110A
FLD32
6
B 7 2
00120A
FLD33
6
B 8 2DSPATR(PR)
A
RECORD1 and RECORD2 have equivalent MDTOFF keyword specifications. When RECORD1 or
RECORD2 is displayed, the MDT of each input-capable field already on the display is set off, unless the
field has the DSPATR(PR) keyword in effect (FLD33, when displayed, is such a field). When RECORD3 is
displayed, the MDTs of each input-capable field already on the display is set off even if the DSPATR(PR)
keyword is in effect for the field.
MLTCHCFLD (Multiple-Choice Selection Field) keyword for display files
You use this field-level keyword to define a field as a multiple-choice selection field.
150
System i: Programming DDS for display files
A multiple-choice selection field is a field that contains a fixed number of choices from which a user can
select multiple choices. The field appears as a vertical or horizontal list of choices, an input field to the
left of each choice, or as a group of check boxes.
If you see an input field, instead of a check box to the left of each choice, the selection character default
value is a slash (/). Message CPX5A0C contains the country-designated selection characters. The value
can be changed to allow alternate selection characters for a multiple-choice selection field. These
characters are the allowed uppercase or lowercase country-designated selection characters. The characters
are defined when the display file is created.
The format of the keyword is:
MLTCHCFLD[([*RSTCSR | *NORSTCSR]
[*NOSLTIND | *SLTIND]
[[(*NUMCOL nbr-of-cols) | (*NUMROW nbr-of-rows)]
[(*GUTTER gutter-width)]])]
Parameters are optional. If none are specified, the multiple-choice selection field choices will be arranged
in a single vertical column. The user will be allowed to move the selection cursor out of this field using
the arrow keys. There will be three spaces between choices and selection indicators will be displayed.
The RSTCSR parameter specifies whether the arrow keys should be allowed to move the selection cursor
outside of the selection field. *RSTCSR specifies that the arrow keys will not cause the selection cursor to
move outside of the selection field. *NORSTCSR specifies that the arrow keys will cause the selection cursor
to leave the selection field. The default is *NORSTCSR.
Note: An exception to the restrictions imposed by *RSTCSR happens if the selection field is the only field
contained within a pull-down window. In that case, when the selection cursor is within the
leftmost or rightmost columns, the left and right arrow keys will close the current pull-down
window and open the pull-down window associated with the menu-bar choice to the left or right
of the current menu-bar choice.
The *RSTCSR parameter is ignored on displays that are not connected to a controller that supports an
enhanced interface for nonprogrammable workstations.
The SLTIND parameter indicates whether selection indicators (such as check boxes) should be displayed.
*NOSLTIND specifies that the selection indicators should not be displayed. The default is *SLTIND.
*NUMCOL specifies that this selection field should be displayed in multiple columns with the choices spread
across the columns in this manner:
choice1
choice4
choice7
choice2
choice5
choice8
choice3
choice6
choice9
The nbr-of-cols portion of the parameter specifies how many columns the selection field should contain.
Nbr-of-cols must be a positive integer and the entire multiple-choice selection field must be able to fit on
the display when placed in the specified number of columns.
*NUMROW specifies that this selection field should be displayed in multiple rows with the choices spread
across the columns in this manner:
choice1
choice2
choice3
choice4
choice5
choice6
choice7
choice8
choice9
The nbr-of-rows portion of the parameter specifies how many rows the selection field should contain.
Nbr-of-rows must be a positive integer and the entire multiple-choice selection field must be able to fit on
the display when placed in the specified number of rows.
DDS for display files
151
The *GUTTER parameter is optional and specifies the number of spaces to be placed between each
column of the multiple-choice selection field. It can only be specified if either *NUMCOL or *NUMROW
has been specified and must immediately follow the (*NUMxxx #) parameter. The gutter-width must be a
positive integer of at least 2. If *GUTTER is not specified, the default of gutter-width is set to three
spaces.
A field containing the MLTCHCFLD keyword must contain one or more CHOICE and CHCCTL
keywords defining the choices for the field.
The field containing the MLTCHCFLD keyword must be defined as an input-capable field with the data
type Y and length of two. The position specified for the field is the position of the input field displayed
to the left of the first choice or of the uppermost check box. If *NOSLTIND is used on the PULLDOWN
keyword and the device is attached to a controller that supports an enhanced interface for
nonprogrammable workstations, the position is the first character of the text for the first choice. On input,
the field contains the number of the choices selected, or 0 if no choice was selected. On output, the value
of the field is ignored.
Provide a minimum of two spaces between the end of the previous field and the position specified for
the multiple choice field. This allows an ending attribute for the previous field, and a beginning attribute
for the multiple choice field. These attributes cannot overlap.
The following keywords can be specified on a field with the MLTCHCFLD keyword:
ALIAS
AUTO(RA)
BLANKS
CHANGE
CHCAVAIL
CHCUNAVAIL
CHCSLT1
CHCCTL
CHECK(ER, FE)2
CHOICE
CHGINPDFT
COLOR3
FLDCSRPRG
DSPATR(RI UL BL CS HI ND PC)3
ERRMSG
ERRMSGID
INDTXT
OVRATA
OVRATR
PUTRETAIN
TEXT
Notes:
1. CHCSLT functions only if the multiple-choice selection field is displayed in a pull-down menu
that does not display selection indicators, when PULLDOWN(*NOSLTIND) is specified.
2. Check(FE) applies only to a display attached to a controller that does not support an enhanced
interface.
3. If the COLOR or DSPATR keyword is specified for a field with the MLTCHCFLD keyword, it
applies only to the input field portion of the selection field on character-based displays.
Option indicators are not valid for this keyword.
Example
The following example shows how to specify the MLTCHCFLD keyword:
|...+....1....+....2....+....3....+....4....+....5....+....6....+....7....+....8
A
A
R RECORD
A
F1
2Y 0B 3 35MLTCHCFLD
A 01
CHOICE(1 '>Undo
')
A
CHOICE(2 &MARKTXT);
A
CHOICE(3 '>Copy
')
A
CHCCTL(1 &CTLONE1 MSG1111 QUSER/A)
A
CHCCTL(2 &CTLTWO1 &MSG1 &LIB/&MSGF);
152
System i: Programming DDS for display files
A
A
A
A
A
A
A
A
CHCCTL(3 &CTLTHR1);
CTLONE1
CTLTWO1
CTLTHR1
MSGF
LIB
MARKTXT
1Y
1Y
1Y
10A
10A
10A
0H
0H
0H
P
P
P
The CHCCTL keyword is required for each CHOICE keyword used for the MLTCHCFLD.
On input, the hidden field for the CHCCTL keyword indicates whether the choice was selected. 0
indicates the choice was not selected; 1 indicates the choice was selected. On output, the hidden field
controls the availability of the choice, and is used to set a default selection of a choice. 0 indicates the
choice should be available, 1 indicates the choice should be selected by default, and 2 indicates the choice
is unavailable. Other values, such as 0, are truncated.
MNUBAR (Menu Bar) keyword for display files
You use this record-level keyword to define a menu bar.
A menu bar is a horizontal list of choices that is followed by an optional separator line. The choices
represent groups of related actions that the application user can select. For example, a group of actions
appears in a pull-down menu when the user selects a menu-bar choice. A menu-bar record contains a
field with one or more MNUBARCHC keywords that define the menu-bar choices. The separator line is
generated by the system.
The format of the keyword is:
MNUBAR([*SEPARATOR | *NOSEPARATOR])
The parameter is optional and specifies whether a separator line should be placed below the last line of
the menu-bar choices. *SEPARATOR indicates that a menu-bar separator line should be placed after the
last line of the menu-bar choices. *NOSEPARATOR indicates that a menu-bar separator line should not be
displayed. The default is *SEPARATOR.
Note: If *NOSEPARATOR is specified, the MNUBARSEP keyword cannot be specified on this record.
A record with the MNUBAR keyword specified must contain one and only one menu bar field (a field
with one or more MNUBARCHC keywords), and cannot contain any displayable fields other than the
menu bar field.
The following keywords are allowed on a record containing the MNUBAR keyword:
CAnn
CFnn
CLEAR
CLRL
CSRLOC
DSPMOD
HELP
HLPCLR
HLPCMDKEY
HLPRTN
HLPTITLE
HOME
INDTXT
INVITE
KEEP
LOCK
MNUBARDSP
MNUBARSEP
MNUBARSW
MNUCNL
OVERLAY
PAGEDOWN/PAGEUP
PRINT
PROTECT
ROLLUP/ROLLDOWN
TEXT
UNLOCK
VLDCMDKEY
Note: These keywords are ignored on the menu-bar record if the menu-bar record is displayed by the
system (for example, if MNUBARDSP is specified on a record other than this menu-bar record).
Option indicators are not valid for this keyword.
DDS for display files
153
Example
The following example shows how to specify the MNUBAR keyword.
|...+....1....+....2....+....3....+....4....+....5....+....6....+....7....+....8
A
R RECORD1
MNUBAR
A
MNUFLD
2Y 0I 1 2
A
MNUBARCHC(1 RCDFILE 'File')
A
MNUBARCHC(2 RCDEDIT 'Edit')
A
MNUBARCHC(3 RCDVIEW 'View')
A
MNUBARCHC(4 RCDOPT 'Options')
A
MNUBARCHC(5 RCDHELP 'Help')
A
:
A
:
A
In this example, RECORD1 is defined as a menu-bar record. When RECORD1 is displayed, the menu-bar
choices defined on the field MNUFLD are displayed as a menu bar. The menu-bar choices are followed
by a separator line. On character-based displays, the separator line is made up of blue dashes. On a
graphical display attached to a controller that supports an enhanced interface for nonprogrammable
workstations, the separator line is a solid line.
MNUBARCHC (Menu-Bar Choice) keyword for display files
You use this field-level keyword to define a choice for a menu-bar field.
A menu-bar choice represents a group of related actions that the application user can select. A group of
actions appears in a pull-down menu when the user requests a menu-bar choice.
The format of the keyword is:
MNUBARCHC(choice-number pull-down-record choice-text
[&return-field])
The choice-number parameter is required and specifies an identification number. The choice number is
returned to the application to indicate which choice in the menu bar was selected. Valid values for the
choice number are integers 1 to 99. Duplicate values within a single menu-bar field are not allowed.
The pull-down-record parameter is required and specifies the name of the pull-down record that is
displayed when the user selects this choice. The record specified must exist within the file and must
contain a PULLDOWN keyword.
The choice-text parameter is required and defines the text that appears in the menu bar for the choice.
The parameter can be specified in one of two forms:
v As a character string: ’Choice text ’
v As a program-to-system field: &field-name
The field-name specified must exist in the menu bar record and must be defined as a character field
with usage P.
The choice text must fit on one line of the display for the smallest display size specified for the file.
Because the text for the first menu-bar choice on a line begins at position 3 and a trailing blank is always
inserted after the choice text, the maximum length of the choice text is 76 if the smallest display size for
the file is 24 x 80 and 128 if the smallest display size for the file is 27 x 132.
When the choice text contained in the character string or the program-to-system field is displayed,
trailing blanks in the text are truncated and 3 blank spaces are inserted between choices. However, the
number of lines that the menu-bar field occupies on the display is determined by the sum of the lengths
of the choice-text parameters, plus 3 blank spaces between each choice. The length of the choice-text is
154
System i: Programming DDS for display files
either the length of the character string, excluding trailing blanks, or the length of the program-to-system
field. The maximum number of lines that a menu bar field can occupy is 12 lines (this includes the
separator line).
Within the choice text, you can specify a mnemonic for the choice by using a greater than character (>) to
indicate the mnemonic character. The character to the right of the > is the mnemonic. Examples:
Choice text
Appears as
’>File’ File
’F>inish’
Finish
’Save >As...’
Save As...
’X >= 1’
X=1
To specify a > as a character in the text, you must specify it twice, just as you must specify the
apostrophe character twice in order to get a single apostrophe character in the text.
Choice text
Appears as
’X >>= 1’
X >= 1
’X >>>= 1’
X >= 1
Note: It is not possible to specify the > as the mnemonic character.
The mnemonic character indicated must be a single-byte character and must not be a blank. Only one
mnemonic is allowed in the choice text, and the same mnemonic character cannot be specified for more
than one choice.
The return-field parameter is optional and specifies whether control is returned to the application because
a menu bar choice was selected. This parameter specifies the name of a hidden field in the menu-bar
record that contains the number of the choice selected when control is returned to the application. The
hidden field is defined as a data type Y (numeric), the length of the field is two, and decimal positions
are 0. The presence of a choice number in this field indicates that control has been returned to the
application because a menu-bar choice was selected. The next operation of the application updates (if
necessary) and writes the pull-down record associated with that choice; that is, the pull-down record
specified on the MNUBARCHC keyword for the choice. When a choice number is returned in this field,
zero is returned in the field that contains the choice number after pull-down input has been received.
Likewise, when pull-down input has been received, zero is returned in this field, and the presence of a
choice number in menu-bar field or the choice field in the application record indicates that the
application should process the pull-down input.
The menu bar field contained in the MNUBARCHC keywords is defined as an input-capable field with
data type Y (numeric). The length of the field is two and decimal positions 0. If the menu bar record is
read, the number of the choice selected (if any) is returned in the menu-bar field. The menu-bar field
must always be defined as starting in row 1, column 2.
When MNUBARCHC is specified on a field, the MNUBAR keyword is required at the record level.
DDS for display files
155
Multiple MNUBARCHC keywords can be specified for one menu bar field. The number of
MNUBARCHC keywords that can be specified is limited only by the lengths of the choice text
parameters (excluding trailing blanks in character string choice-text) and the 12 line limit for a MNUBAR.
All the choices defined for a menu bar field must fit on the screen, allowing for 3 spaces between each
choice.
The following keywords can be specified on a field with the MNUBARCHC keyword:
ALIAS
CHCAVAIL
CHCSLT
INDTXT
MNUBARSEP
TEXT
Option indicators are valid for this keyword.
Examples
The following examples show how to specify the MNUBARCHC keyword.
Example 1
|...+....1....+....2....+....3....+....4....+....5....+....6....+....7....+....8
A
DSPSIZ(*DS3 *DS4)
A
R MENUBAR
MNUBAR
A
MNUFLD
2Y 0B 1 2
A
MNUBARCHC(1 PULLFILE +
A
'>File
')
A 01
MNUBARCHC(2 PULLEDIT +
A
'>Edit
')
A
MNUBARCHC(3 PULLVIEW +
A
'>View
')
A
MNUBARCHC(4 PULLOPT +
A
'>Options
' &RTNFLD);
A
MNUBARCHC(5 PULLHELP +
A
'>Help
')
A
RTNFLD
2Y 0H
In this example, five menu bar choices (File, Edit, View, Options and Help) are defined in a menu bar. If
option indicator 01 is on and the menu bar record is written before the system displays it, the Edit choice
is displayed when the system displays the menu bar. If option indicator 01 is off or the menu-bar record
is not written before the system displays it, the Edit choice is not displayed. If the Edit choice is not
displayed, the list of choices are compressed and the View choice will follow the File choice, with 3 blank
spaces in between.
If the File choice is selected, record PULLFILE is displayed as a pull-down menu beneath the File choice.
If the Options choice is selected, control is returned to the application. The application can update the
PULLOPT record before the system displays it as a pull-down menu.
On displays capable of a single-character underline, the mnemonic for each choice is the first character in
the text. If the menu-bar record is read, the menu-bar field MNUFLD contains the number of the choice
selected, or 0 if no choice was selected.
The text for each choice has been specified as a character string, with 15 spaces available for the text.
However, the trailing blanks are removed before the system calculates how many choices fit on a line.
Therefore, the maximum space required for the menu bar is 87 positions (28 for the text within the
character strings, plus 3 spaces between each choice). The menu-bar choices occupy one line. The
menu-bar separator occupies one more line; therefore the entire menu bar occupies two lines.
156
System i: Programming DDS for display files
Example 2
|...+....1....+....2....+....3....+....4....+....5....+....6....+....7....+....8
A
DSPSIZ(*DS3 *DS4)
A
R MENUBAR
MNUBAR
A
MNUFLD
2Y 0B 1 2
A
MNUBARCHC(1 PULLFILE +
A
&FILETXT);
A 01
MNUBARCHC(2 PULLEDIT +
A
&EDITTXT);
A
MNUBARCHC(3 PULLVIEW +
A
&VIEWTXT);
A
MNUBARCHC(4 PULLOPT +
A
&OPTTXT &RTNFLD);
A
MNUBARCHC(5 PULLHELP +
A
&HELPTXT);
A
FILETXT
15A P
A
EDITTXT
15A P
A
VIEWTXT
15A P
A
OPTTXT
15A P
A
HELPTXT
15A P
A
RTNFLD
2Y 0H
A
This example is the same as example 1, except that the choice text has been specified using
program-to-system fields.
At run time, the choice text to be displayed for each choice is retrieved from the program-to-system
fields. Any mnemonics must be specified in the text supplied by the application at run time. As in
example 1 when the menu-bar record is read, the menu-bar field MNUFLD contains the number of the
choice selected, or 0 if no choice was selected.
As in example 1, the number of spaces available for the text for each choice is 15. The maximum space
required for the menu bar is 78 positions (15 possible text positions for each of the 5 choices plus 3 spaces
between choices). Because the smallest display size is 24x80 (*DS3), the menu-bar choices occupy 2 lines.
The menu-bar separator occupies one more line, so the entire menu bar occupies 3 lines. However, the
actual number of lines that is used to display the choices depends on the text that is contained in the
program-to-system fields. When the menu bar is displayed, the trailing blanks in the P-fields are
truncated, and 3 blanks are inserted between each choice.
Example 3
|...+....1....+....2....+....3....+....4....+....5....+....6....+....7....+....8
A
R MENUBAR
MNUBAR
A
MNUFLD
2Y 0B 1 2
A
MNUBARCHC(1 PULLFILE +
A
'>File
')
A
MNUBARCHC(2 PULLEDIT +
A
'>Edit
' &RTNFLD);
A
RTNFLD
2Y 0H
In this example, if choice 2 in the menu bar is selected, control is returned to the application and field
RTNFLD contains the number 2. Field MNUFLD contains 0, indicating no pull-down input received. The
application must read record MENUBAR in order to get the contents of field RTNFLD. The application
must then write record PULLEDIT. The system resumes control of the menu-bar interaction. If input is
then entered in record PULLEDIT, control is returned to the application, and field MNUFLD contains
number 2. Field RTNFLD contains 0, indicating control has been returned because pull-down input was
received.
If choice 1 is selected, the system displays pull-down record PULLFILE. If input is entered in PULLFILE,
control is returned to the application, and field MNUFLD contains number 1. Field RTNFLD contains 0,
indicating control has been returned because pull-down input was received.
DDS for display files
157
MNUBARDSP (Menu-Bar Display) keyword for display files
You use this record-level keyword to display a menu bar.
The MNUBARDSP keyword has two formats: one for records that contain the MNUBAR keyword and
one for records that do not contain a MNUBAR keyword.
The format for MNUBARDSP when specified on a record that is not a menu bar record is:
MNUBARDSP(menu-bar-record &choice-field [&pull-down-input])
The format for MNUBARDSP when specified on a menu bar record is:
MNUBARDSP[(&pull-down-input)]
The menu-bar-record parameter specifies the menu-bar record that is to be displayed when this record is
written. The menu-bar record must exist in the same file as the record you are defining.
The &choice-field parameter specifies the name of a hidden field, which on input contains the number of
the choice (if any) selected from the menu bar. The field must exist in the record you are defining and it
must be defined as numeric Y in position 35, usage H, length 2, and decimal positions 0.
The &pull-down-input parameter is optional and specifies the name of a hidden field that contains the
input from the pull-down menu when the pull-down menu contains only a single-choice selection field.
The field must exist in the record you are defining and it must be defined as a length 2, decimal positions
0, and zoned (S in position 35) field with usage H (hidden). On input, this field contains one of the
following values:
Value Meaning
0
No selection made.
n
Choice n in the pull-down menu was selected.
-1
Pull-down record contains something other than the one single-choice selection field. You must
read the pull-down record to receive its contents.
Option indicators are valid for the MNUBARDSP keyword, and more than one MNUBARDSP keyword
can be specified on the record if all are optioned. If more than one MNUBARDSP keyword is in effect
when the record is written, the first one in effect is used.
Example 1
The following example shows how to specify the MNUBARDSP keyword on a record that is not a menu
bar.
|...+....1....+....2....+....3....+....4....+....5....+....6....+....7....+....8
A
A
R RECORD1
A 01
MNUBARDSP(MENURCD &MNUCHOICE &INPUT);
A
FIELD1
10A B 10 12
A
FIELD2
5S 0B 14 12
A
MNUCHOICE
2Y 0H
A
INPUT
2S 0H
A
R MENURCD
MNUBAR
A
F1
2Y 0B 1 2
A
MNUBARCHC(1 PULLFILE 'File')
A
:
A
:
A
In this example, if option indicator 01 is on when record RECORD1 is written to the display, the system
displays the menu bar in record MENURCD. When the menu bar is activated and the pull-down menu is
158
System i: Programming DDS for display files
selected, the number of the menu-bar choice is returned in field MNUCHOICE. If the pull-down menu
selected contains one single-choice selection field, the choice made for that field is returned in field
INPUT. Otherwise, field INPUT contains -1, indicating that the application must read the pull-down
record to receive the pull-down input.
Example 2
The following example shows how to specify the MNUBARDSP keyword on a menu-bar record.
|...+....1....+....2....+....3....+....4....+....5....+....6....+....7....+....8
A
R MENURCD
MNUBAR
A 01
MNUBARDSP
A
F1
2Y 0B 1 2
A
MNUBARCHC(1 PULLFILE 'File')
A
:
A
:
A
If option indicator 01 is on when record MENURCD is written to the display, the system displays the
menu bar defined in MENURCD. If the user selects a pull-down menu from the menu bar, the number of
the menu-bar choice selected is returned in F1 field.
MNUBARSEP (Menu-Bar Separator) keyword for display files
You use this field-level keyword on a menu-bar field to specify the color, display attributes, or the
character that is used to form the menu-bar separator line.
The format of the keyword is:
MNUBARSEP([color] [display-attribute] [character])
One parameter must be specified.
The color parameter specifies the color of the separator characters on a color workstation. The parameter
is specified as an expression of the form (*COLOR value).
The valid values for the color parameter are:
Value Meaning
BLU
Blue
GRN
Green
PNK
Pink
RED
Red
TRQ
Turquoise
YLW
Yellow
WHT
White
If the color parameter is not specified, the default is blue. This parameter is ignored if it is specified for a
menu bar on a monochrome display.
The display-attribute parameter specifies the display attributes of the separator characters. The parameter
is specified as an expression of the form (*DSPATR value1 <value2 <value3...>>).
The valid values for the display attributes are:
Value Meaning
DDS for display files
159
BL
Blink
CS
Column separator
HI
High intensity
ND
Nondisplay
RI
Reverse image
UL
Underline
The default display attribute for the menu-bar separator is normal (or low) intensity.
Note: Display attributes CS, HI, and BL can cause fields on 5292, 3179, 3197 Model C1 and C2, 3487
Models HC, and 34887 workstations to appear as color fields. Display attributes HI, RI, and UL
cause a separator line not to be displayed.
The character parameter specifies the character that makes up the separator line. The parameter is
specified as an expression of the form (*CHAR ’separator-character’). The separator-character value is one
character. If this parameter is not specified, the default separator character is a dash (-) or on a graphical
device this shows as a solid line. Although any displayable character can be specified as the separator
character, it is recommended that you use invariant characters.
The following figure shows the invariant characters:
Table 10. Character set for system data
Hexadecimal
40
4B
4C
4D
4E
50
5C
5D
5E
60
61
6B
6C
6D
6E
6F
7A
7D
7E
Note: In addition, you can use any of
Character
.
<
(
+
&
*
)
;
/
,
%
_
>
?
:
’
=
the following characters:
Description
Blank
Period
Less-than sign
Left parenthesis
Plus sign
Ampersand
Asterisk
Right parenthesis
Semicolon
Minus sign
Slash
Comma
Percent sign
Underline
Greater-than sign
Question mark
Colon
Apostrophe
Equal sign
v Uppercase alphabetic characters: A through Z
v Numeric characters: 0 through 9
When the MNUBARSEP keyword is specified on a field, the MNUBAR keyword must also be specified
on the associated record. The *NOSEPARATOR parameter cannot be used on the MNUBAR keyword if
the MNUBARSEP keyword is specified.
7. Dependent on the monitor attached to the display device.
160
System i: Programming DDS for display files
Option indicators are valid for this keyword.
If more than one COLOR keyword is specified, the color parameter, display attribute, and separator
character are taken from the first keyword that was specified.
Example
The following example shows how to specify the MNUBARSEP keyword:
|...+....1....+....2....+....3....+....4....+....5....+....6....+....7....+....8
A
A
R MENUBAR
MNUBAR
A
MNUFLD
2Y 0B 1 2
A
MNUBARSEP((*COLOR PNK) +
A
(*DSPATR RI) (*CHAR ' '))
A
MNUBARCHC(1 PULLFILE +
A
'File
')
A
MNUBARCHC(2 PULLEDIT +
A
'Edit
')
A
In this example, the menu-bar separator is made up of pink blanks displayed in reverse image.
Related reference
“COLOR (Color) keyword for display files” on page 73
You use this keyword to specify the color of a field on a color display.
MNUBARSW (Menu-Bar Switch Key) keyword for display files
You use this file- or record-level keyword to assign a command attention (CA) key to be the
Switch-to-menu-bar key.
If the menu-bar switch key is active and a menu bar is displayed, pressing the CA key will do one of the
following tasks:
v If the cursor is located on the application record, pressing the switch key moves the cursor to the first
field in the menu bar.
v If the cursor has been moved to the menu bar using the switch key, pressing the switch key again
moves the cursor back to the location where the cursor was when the switch key was pressed to move
the cursor into the menu bar.
v If the cursor has been moved to the menu bar manually (for example, using the cursor movement
keys), pressing the switch key moves the cursor to the first input-capable field in the application
record.
The format of the keyword is MNUBARSW [(CAnn)].
The CAnn parameter is optional. If not specified, the default is CA10. Valid values for the CAnn
parameter are CA01 through CA24.
Within a record, the CAnn key specified by the MNUBARSW keyword cannot be specified again using
another keyword (such as MNUCNL). Because MNUBARSW at the file level extends to all records in the
file, this must be considered when assigning a CAnn key.
If the MNUBARSW keyword is specified on the record, the CAnn key or default CA10 key can be used
only as a CA key on other records, not as a CF key.
The MNUBARSW keyword is allowed only in a file containing a menu-bar record.
Option indicators are valid for this keyword.
DDS for display files
161
Example
The following example shows how to specify the MNUBARSW keyword:
|...+....1....+....2....+....3....+....4....+....5....+....6....+....7....+....8
A
MNUBARSW(CA10)
A
R MENUBAR
MNUBAR
A
MNUFLD
2Y 0B 1 2
A
MNUBARCHC(1 PULLFILE +
A
'>File
')
A 01
MNUBARCHC(2 PULLEDIT +
A
'>Edit
')
A
A
R PULLEDIT
PULLDOWN
A
F1
1D 0B 1
2RANGE(1 3)
A
1 5'1. Undo
'
A
2 4'2. Mark
'
A
3 4'3. Copy
'
A
:
A
:
A
R APPSCR
MNUBARDSP(MENUBAR &MNUCHOICE);
A
FIELD1
10A B 10 12
A
FIELD2
5S 0B 14 12
A
24 1'F12=Cancel '
A
MNUCHOICE
2S 0H
A
In this example, CA10 is defined as the Switch-to-menu-bar key for all records in the file. When the
cursor is located anywhere except in the menu bar and CA10 is pressed, the cursor is moved to the File
choice on the menu bar. If CA10 is pressed again while the cursor is located anywhere in the menu bar,
the cursor is moved back to its previous location within the APPSCR record.
MNUCNL (Menu-Cancel Key) keyword for display files
You use this file- or record-level keyword to assign a command attention (CA) key to be the cancel key
for menu bars or pull-down menus.
When the MNUCNL keyword is active and a pull-down menu is displayed, pressing the CA key cancels
the pull-down menu and returns the cursor to the choice in the menu bar. If no pull-down menu is
displayed and the cursor is located in the menu bar, pressing the CA key cancels the menu bar and
returns the cursor to the application screen. If no pull-down menu is displayed and the cursor is on the
application screen, pressing the CA key returns control to the application.
The format of the keyword is:
MNUCNL[(CAnn [response-indicator])]
The CAnn parameter is optional. If not specified, the default is CA12. Valid values are CA01 through
CA24.
The response-indicator parameter is optional. The parameter is set on when the MNUCNL keyword is
active on a record other than a menu bar or pull-down menu, and control is being returned to the
application.
Within a record, the CAnn key specified by the MNUCNL keyword cannot be specified again using
another keyword (such as MNUBARSW). Because MNUCNL at the file-level extends to all records in the
file, this must be considered when assigning a CAnn key.
If the MNUCNL keyword is specified on the record, the CAnn key or default CA12 key can be used only
as a CA key on other records, not as a CF key.
The MNUCNL keyword is allowed only in a file containing a menu-bar record.
162
System i: Programming DDS for display files
Option indicators are valid for this keyword.
Example
The following example shows how to specify the MNUCNL keyword:
|...+....1....+....2....+....3....+....4....+....5....+....6....+....7....+....8
A
MNUCNL(CA12 12)
A
R MENUBAR
MNUBAR
A
MNUFLD
2Y 0B 1 2
A
MNUBARCHC(1 PULLFILE +
A
'>File
')
A 01
MNUBARCHC(2 PULLEDIT +
A
'>Edit
')
A
A
R PULLEDIT
PULLDOWN
A
F1
1D 0B 1 2RANGE(1 3)
A
1 5'1. Undo
'
A
2 4'2. Mark
'
A
3 4'3. Copy
'
A
:
A
:
A
R APPSCR
MNUBARDSP(MENUBAR &MNUCHOICE);
A
FIELD1
10A B 10 12
A
FIELD2
5S 0B 14 12
A
24 1'F12=Cancel '
A
MNUCHOICE
2S 0H
In this example, CA12 is defined as the cancel key for all records in the file. If CA12 is pressed while the
pull-down menu, PULLEDIT, is displayed, the pull-down menu is canceled. If CA12 is pressed while the
cursor is located on the menu bar (no pull-down menus are displayed), the menu bar is canceled and the
cursor is moved back to the application record. If CA12 is pressed while the cursor is not located on the
menu bar and no pull-down menu is displayed, response indicator 12 is set on and control is returned to
the application program.
MOUBTN (Mouse Buttons) keyword for display files
You use this file-level or record-level keyword to associate a Command key or EVENT-ID parameter with
one or two pointer-device events.
When a specified pointer device single event is performed and no other function has a higher priority,
the keyboard is locked, the cursor is moved to the pointer device cursor location, and the specified
Command key or EVENT-ID is returned to the application. If the Command key or EVENT-ID normally
results in entry field data validation, the data validation is performed first. If the specified Command key
or EVENT-ID normally returns entry field data, inbound entry field data is included.
For pointer device double events, inbound data is not returned until the trailing edge event also occurs.
When the leading edge event is detected, a programmable-two-event state is entered, a marker box is
drawn around the location of the pointer device cursor (4 blue lines around the character), the pointer
device cursor color is changed to white on a color nonprogrammable workstations (NWS) and the trailing
edge event is looked for. Keystrokes and host data streams will cancel the programmable-two-event state.
Some pointer device events are ignored while waiting for the trailing edge event. When the trailing edge
event is received, the marker box is erased, the pointer device cursor color is changed to input inhibited,
then keyboard is locked, the text cursor is moved to the location of the pointer device cursor, and the
inbound data is returned to the host.
Note: Although it is permitted, it is not be advisable to program some combinations of pointer device
events on the same mouse button and shift state. For example, if the right button is programmed,
right button double click should not be programmed because it cannot be detected due to the
keyboard being locked from the right button pressed event. Using the *QUEUE parameter will
allow the application to handle this situation.
DDS for display files
163
The format of this keyword is:
MOUBTN(EVENT [TRAILING-EVENT]
[*QUEUE | *NOQUEUE])
{Command key | EVENT-ID}
The EVENT parameter is required and indicates the pointer device event that will be associated with the
Command key or EVENT-ID parameter. Valid values for the EVENT parameter are:
Value Meaning
*ULP
Unshifted Left button Pressed
*ULR
Unshifted Left button Released
*ULD Unshifted Left button Double click
*UMP Unshifted Middle button Pressed
*UMR Unshifted Middle button Released
*UMD
Unshifted Middle button Double click
*URP
Unshifted Right button Pressed
*URR Unshifted Right button Released
*URD Unshifted Right button Double click
*SLP
Shifted Left button Pressed
*SLR
Shifted Left button Released
*SLD
Shifted Left button Double click
*SMP Shifted Middle button Pressed
*SMR Shifted Middle button Released
*SMD Shifted Middle button Double click
*SRP
Shifted Right button Pressed
*SRR
Shifted Right button Released
*SRD Shifted Right button Double click
The TRAILING-EVENT parameter is optional. If specified, this parameter defines the trailing event of a
two event pointer device definition. This parameter has the same valid values as the EVENT parameter.
A TRAILING-EVENT is be the trailing edge event for multiple leading edge events and have different
Command key or EVENT-ID associations for each one. An event is be a trailing edge event and also
defined as a single event (with a different Command key or EVENT-ID association).
Note: There are some restrictions to the Event definitions.
v An event cannot be both a single event and a leading edge of a two event sequence.
v A leading edge event can have only one trailing edge event associated with it.
If you use the same event as a single or leading edge event with multiple mouse button definitions, only
the first definition is used.
Either the Command key or EVENT-ID parameter must be specified and associates a Command key or
EVENT-ID value with the pointer device event indicated by the first (and second, if provided)
parameters. Valid values for a Command key are CA01 through CA24, CF01 through CF24, ENTER,
ROLLUP, ROLLDOWN, HELP, HOME, PRINT and CLEAR. Valid EVENT-IDs are E00 through E15.
EVENT-IDs are similar to CAxx keys in that no input data is transmitted from the device.
164
System i: Programming DDS for display files
The QUEUE parameter is optional and specifies if the single event being defined should be queued by
the controller if received while the keyboard is locked. This feature is primarily used to allow a
double-click to be defined for a mouse button that also has either the pressing or releasing of the same
button defined. If the queueing is not enabled for the double click, the application will probably not
know that the double-click has occurred since the keyboard will still be locked from processing the
pressing/releasing of the button. The default is *NOQUEUE.
The following keywords cannot be specified when the listed Command key has been used on the
MOUBTN keyword:
Command key
CFxx
CAxx
CF01
CA07
CA08
Mutually exclusive keyword
ALTHELP(CAyy), CAxx
where xx=yy.
ALTPAGEDWN(CFyy), ALTPAGEUP(CFyy), CFxx
where xx=yy.
ALTHELP with no parameter
ALTPAGEUP with no parameter
ALTPAGEDWN with no parameter
Although not required, it is valid to specify the CA01-CA24, CF01-CF24, ROLLUP, ROLLDOWN,
PAGEUP, PAGEDOWN, CLEAR and HLPRTN keywords even though the associated function key is
defined as a command key to a single or double mouse event. Associating a Command key to a mouse
event will automatically enable the corresponding Command key from the keyboard. If you want to
associate a response indicator with the function key, you must use one of the listed keywords to do this.
In that case, the response indicator will be set on regardless if the Command key originates from the
keyboard or from a mouse event.
Option Indicators are valid for this keyword.
Example
The following example shows how to specify the MOUBTN keyword.
|...+....1....+....2....+....3....+....4....+....5....+....6....+....7....+....8
A
MOUBTN(*URP CF03)
A
MOUBTN(*SRP CF12)
A
CF12(12 'CANCEL')
A
R RECORD1
A
MOUBTN(*ULP *UMP ROLLUP)
A
MOUBTN(*UMP *ULP ROLLDOWN)
A
1 10'ONE--:'
A
FIELD1
10A I 1 17TEXT('ONE')
A
2 10'TWO--:'
A
FIELD2
10A I 2 17TEXT('TWO')
A
In this example, 2 Programmable Mouse Button events have been defined that will be in effect for all
records within this file (unless overridden at the record level). These definitions associate the unshifted
right mouse button pressed event with the CF03 key and the shifted right mouse button pressed event
with the CF12 key. The CF03 key has no response indicator associated with it while the CF12 key has
response indicator 12 associated with it.
Within RECORD1, two two-event mouse button events have been defined. The first associates the
unshifted left mouse button pressed followed by the unshifted middle mouse button pressed with the
ROLLUP key. The second associates the unshifted middle mouse button pressed followed by the
unshifted left mouse button pressed with the ROLLDOWN key. These definitions are only valid when
RECORD1 is the last record to be written to the display.
DDS for display files
165
MSGALARM (Message Alarm) keyword for display files
You use this file-level or record-level keyword to specify that the system is to sound the audible alarm
when this record is displayed with an active ERRMSG, ERRMSGID, SFLMSG, or SFLMSGID keyword, or
when a validity checking error is detected. The alarm is of short duration.
This keyword has no parameters.
If you specify the MSGALARM and ALARM keywords on the same record format and both are active,
the alarm sounds only once.
Option indicators are valid with this keyword.
Example 1
The following example shows how to specify the MSGALARM keyword at record level.
|...+....1....+....2....+....3....+....4....+....5....+....6....+....7....+....8
00010A
R RCD1
00020A
MSGALARM
00030A
FLD01
8A
12 10
00040A 12
ERRMSGID(XYZ0123 MSGFILE)
A
When record format RCD1 is on the display and RCD1 is put to the display again and indicator 12 is on,
the message XYZ0123 from message file MSGFILE is displayed on the message line and the workstation
alarm sounds.
Example 2
The following example shows how to specify the MSGALARM keyword at file level.
|...+....1....+....2....+....3....+....4....+....5....+....6....+....7....+....8
00010A 01
MSGALARM
00020A
R RCD1
00030A
FLD01
8A
12 10
00040A 12
ERRMSGID(XYZ0123 MSGFILE)
00050A
00060A
R RCD2
00070A
FLD02
8A
12 10
00080A 10
ERRMSG('Message text')
A
When record format RCD1 is on the display and RCD1 is put to the display again and indicators 01 and
12 are on, the message XYZ0123 from message file MSGFILE is displayed on the message line, and the
workstation alarm sounds.
When record format RCD2 is on the display and RCD2 is put to the display again and indicator 10 is on
(but 01 is off), the message text is displayed on the message line and the alarm does NOT sound.
MSGCON (Message Constant) keyword for display files
You use this field-level keyword to indicate that the text for constant fields is contained in a message
description.
If the message description does not exist at DDS compilation time, the file will not be created. If you
change the message description, you need to create the file again if you want the display file to contain
the updated message.
The format of the keyword is:
MSGCON(length message-ID [library-name/]message-file-name)
166
System i: Programming DDS for display files
The length parameter specifies the maximum length of the message description. The length can be from 1
to 132 bytes. If the message description is less than the length specified, the remaining bytes are padded
with blanks (hex 40). If the message description is longer than the length specified, the message
description is truncated to the specified length and a warning message appears.
The message-ID parameter specifies the message description that contains the text to use as the value of
the constant field.
The message-file-name parameter identifies the message file that contains the message description. The
library-name parameter is optional.
The MSGCON keyword must be explicitly specified for the field. The MSGCON keyword cannot be used
to initialize a named field.
The DFT and MSGCON keywords are functionally equivalent. If you specify the DFT and MSGCON
keywords for the same field, the MSGCON keyword is ignored and the file is not created.
The MSGCON keyword cannot be specified with any of the following keywords:
DATE
DFT
EDTCDE
EDTWRD
TIME
Option indicators are not valid for changing the value of the message line, but they are valid for
conditioning the presence or absence of the message on the display.
Example
The following example shows how to specify the MSGCON keyword.
|...+....1....+....2....+....3....+....4....+....5....+....6....+....7....+....8
00010A
R RECORD1
00020A
2 1MSGCON(10 MSG0001 MESSAGE/MSGF)
A
MSG0001 in message file MSGF in library MESSAGES contains the message text.
MSGID (Message Identifier) keyword for display files
You use this field-level keyword to allow an application program to identify, at program run time, the
message description that contains text for a named field.
The parameter values on this keyword can specify fields that contain the message identifier, message file,
and library. After the program sets the fields to the values you want, an output operation causes the
message to be retrieved from the message file and displayed. The retrieved message is truncated if it is
longer than the MSGID field. The retrieved message is padded with blanks if it is shorter than the
MSGID field.
See “System/36 environment considerations for display files” on page 261 for information about how to
specify the MSGID keyword in files that are used in the System/36 environment.
The format of the keyword is:
MSGID(message-identifier [library-name/]message-file)
or
MSGID(*NONE)
DDS for display files
167
The message-identifier parameter describes the message description containing the text for the named
field. You can specify this parameter in one of two ways:
v [msg-prefix] &field-name
A message-prefix and a field-name. The field-name must exist in the same record format as the MSGID
field. If you specify a prefix, the length of the prefix must be three, and you must define the field-name
as a character field of length four (4), and usage H, P, B, or O. If you do not specify a prefix, you must
define the field-name as a character field length of seven (7), and usage H, P, B, or O.
v [msgid-prefix] msg-id
You can also use a value or a combination of values to specify the message identifier. If you specify a
prefix, the prefix length must be three (3), and the msg-id length must be four (4). If you do not specify
a prefix, the msg-id length must be seven (7).
The message-identifier is a required parameter.
The message-file and library parameters identify the message file containing the message description. You
can specify the message-file and library parameters in one of the following forms:
v [library-name/]file-name
v [&field1/]&field2
where the lengths of field1 and field2 are ten (10).
The field names must exist in the same record format as the MSGID field, and the fields must be
defined as having character lengths of ten (10) and usage H, P, B, or O.
v Combination of field names and constants:
– library-name/&field1 (length of field1 is 10)
– &field2/file-name (length of field2 is 10)
The message-file is a required parameter. If you do not specify the library parameter, *LIBL is used to
search for the message file at program runtime. The library is an optional parameter.
The *NONE parameter indicates that no message text is to be displayed.
The user or program can override the message file name by using the OVRMSGF command.
You can specify multiple MSGID keywords on a field. When more than one MSGID keyword is specified,
option indicators are required on all except the last MSGID keyword on a field. Option indicators are not
allowed on the last (or only) MSGID keyword specified on a field. If more than one MSGID keyword is
in effect for a field, the first MSGID specified is used.
You can specify multiple MSGID keywords within a record format. You can specify field names used as
parameters on more than one MSGID keyword.
You must have use authority to the message file at program runtime.
The MSGID field must be output-capable (usage B or O). The length specified for the field is the length
of the message text that is to be displayed. It should be the length of the longest message to be displayed.
The MSGID field itself does not appear in the output buffer, but it does appear in the input buffer if it is
defined as input/output (usage B). MSGID fields that are defined as output-only cannot be used in
high-level language programs.
The MSGID parameter fields (if any) appear in the output buffer, but they appear in the input buffer only
if they are defined as hidden or input/output (usage H or B) fields.
A program-to-system field can be specified as the message-id, file, or library name.
168
System i: Programming DDS for display files
You cannot specify MSGID in a subfile record format (SFL keyword).
The following keywords cannot be specified on a field with the MSGID keyword:
DFT
DFTVAL
FLTFIXDEC
FLTPCN
MSGCON
Example
The following example shows how to specify the MSGID keyword.
|...+....1....+....2....+....3....+....4....+....5....+....6....+....7....+....8
A
R RECORD1
A
MSGFIELD1
40A B 02 10MSGID(CPD0001 QGPL/USRMSG)
A 01
MSGFIELD2
10A O 02 60
A 25
MSGID(&MSGIDNUM &MSGFILENM);
A
MSGID(CPD1234 QGPL/USRMSG)
A
MSGFIELD3
80A B 02 60
A
MSGID(USR &MSGNBR +
A
QGPL/&MSGGILENM);
A
MSGIDNUM
7A P
A
MSGFILENM
10A H
A
MSGNBR
4A B 07 01
A
When RECORD1 is displayed:
v MSGFIELD1 contains the first 40 characters of message CPD0001 from message file USRMSG in library
QGPL. Because the field is input/output (usage B), the value of the field can be changed by the user.
v If option indicator 01 is off, MSGFIELD2 is not displayed. When option indicators 01 and 25 are on,
MSGFIELD2 contains the first 10 characters of the message identified by the fields MSGIDNUM and
MSGFILENM. Values for MSGIDNUM (the message identifier) and MSGFILENM (the message file)
must be set in the program before the display of RECORD1.
When option indicator 01 is on but option indicator 25 is off, MSGFIELD2 contains the first 10
characters of message CPD1234 from the message file USRMSG in library QGPL. Because MSGFIELD2
is an output-only field (usage O), it cannot be used in the program.
v MSGFIELD3 contains the first 80 characters of the message identified by the prefix USR, the message
number set in field MSGNBR, and the message file set in field MSGFILENM.
Related reference
“MSGID keyword” on page 263
You use this field-level keyword to allow an application program to identify, at program run time, the
message description that contains text for a named field.
MSGLOC (Message Location) keyword for display files
You use this file-level keyword to move the message line to the specified line number.
The format of the keyword is:
MSGLOC(line-number)
The parameter value is required and must be in the range 1 through 28. Any of these numbers are always
valid, regardless of the display sizes specified on the DSPSIZ keyword. A diagnostic will be issued when
the file is opened if a message location is in the 26 to 28 range for a 24 x 80 display size.
If MSGLOC is not specified, the message line is the last line of the display. The message line is the
display location for the following messages:
DDS for display files
169
Validity check errors
Invalid function key messages
Messages defined as parameter values for the ERRMSG and SFLMSG keywords
Messages identified by the ERRMSGID and SFLMSGID keywords (the entire display is used for
message help)
v Message fields
v Operator error codes and their associated messages
v
v
v
v
Display size condition names must be specified if the message line for the secondary display size is
different from the default message line.
If you do not specify the MSGLOC keyword, the following default values are to be established:
24 x 80 display size:
line 25
27 x 132 display size:
line 28
The default of line 25 for the 24 x 80 display size gives the following results:
v If the display is sent to a 5250 device or a 5251 model 12, line 24 is used as the message line.
v If the display is sent to a 3180-2 device or a 3197 model D1, D2, W1, or W2 attached to a local 6040 or
6041 controller, or remotely attached to a 5294 or 5394 controller, line 25 is used as the message line.
If the ERRSFL keyword is specified in the file, you cannot specify a message location value of 25 for the
24 x 80 display size or 28 for the 27 x 132 display size. When the ERRSFL keyword is in the file, but
MSGLOC is not specified, the following default values are to be established:
24 x 80 display size:
line 24
27 x 132 display size:
line 27
The MSGLOC keyword specification is in effect continuously from file opening to file closing. It can be
temporarily overridden if the file you are defining is suspended while another file is opened to the same
workstation device. The message location in effect for the other file is used until the file that you are
defining is restored.
Any data on the message line before the message appears is saved and restored after the Reset key is
pressed.
Option indicators are not valid for this keyword.
Examples
The following examples show how to specify the MSGLOC keyword.
Example 1
|...+....1....+....2....+....3....+....4....+....5....+....6....+....7....+....8
A
MSGLOC(1)
A
In this example, the message line is moved to line 1 for the primary display size. (Without the DSPSIZ
keyword, the primary display size is the 24 x 80 display.)
170
System i: Programming DDS for display files
Example 2
|...+....1....+....2....+....3....+....4....+....5....+....6....+....7....+....8
A
DSPSIZ(*DS3 *DS4)
A
MSGLOC(1)
A *DS4
MSGLOC(1)
A
The message line is moved to line 1 for both the primary display size 1 and the secondary display size 2.
NOCCSID (No Coded Character Set Identifier) keyword for display files
You use this field-level keyword to specify that CCSID conversion of the field is not done.
This keyword has no parameters.
The Character Data Representation Architecture (CRDA) specifies the ’3F’X character as a replacement
character. This character is also a field attribute definition for the 5250 data stream specification.
Translation converting ’3F’X character to ’1F’X for output is done for all fields whether *JOBCCSID
translation is active or inactive. Use the NOCCSID keyword to prevent translation at the field level.
If the NOCCSID keyword is not specified, conversion of the field continues normally.
Example
The following example shows how to specify the NOCCSID keyword.
|...+....1....+....2....+....3....+....4....+....5....+....6....+....7....+....8
A
A
R RECORD
A
FIELD1
5A B 2 10NOCCSID
A
OPENPRT (Open Printer File) keyword for display files
You use this file-level keyword to specify that after the printer file is opened (the first time the user
presses the Print key), it is to remain open until the associated display file is closed.
If you do not specify OPENPRT (and the PRINT keyword is specified), the printer file is opened and
closed each time a display image is printed.
The printer file should be spooled if more than one job uses the same printer file and device. While the
printer file is open in the nonspooled mode, the associated printer is allocated to the program or process
using this function.
This keyword has no parameters.
This keyword is valid only if you have specified a file-level PRINT keyword with a printer file parameter.
It is not valid with record-level PRINT keywords.
The OPENPRT keyword has no effect unless the PRINT file is specified on the PRINT keyword.
Option indicators are not valid for this keyword.
Example
The following example shows how to specify the OPENPRT keyword.
DDS for display files
171
|...+....1....+....2....+....3....+....4....+....5....+....6....+....7....+....8
00031A
PRINT(PRTFILE)
00032A
OPENPRT
A
Related reference
“PRINT (Print) keyword for display files” on page 176
You use this file-level or record-level keyword to specify that the workstation user can press the Print
key to print the current display.
OVERLAY (Overlay) keyword for display files
You use this record-level keyword to specify that the record format that you are defining should appear
on the display without the entire display being deleted first.
This keyword has no parameters.
Normally, the entire display is deleted on each output operation. All records on the display with fields
that partially or completely overlap fields in this record are deleted before this record is displayed; all
others remain on the display and are not changed in any way. A record already on the display is deleted
even if fields specified in the record format are not selected for display. For example, assume that the
following records are on the display:
REC1
REC2
REC3
REC4
(lines 1 and 2)
(lines 3 and 4)
(line 5)
(line 9)
An output of REC5 (lines 4 and 5) with OVERLAY will leave the display with the following records:
REC1 (lines 1 and 2)
REC5 (lines 4 and 5)
REC4 (line 9)
If the record with the OVERLAY keyword in effect is already on the display and PUTOVR, PUTRETAIN,
or CLRL keyword is not specified, it is deleted and rewritten as a new record.
When the beginning attribute character of a record overlaps the ending attribute character of a record
already displayed, the attribute characters overlap each other in position 1 of a line. (The last field of the
first record displayed ends in the farthest right display position of the preceding line.)
In the above example, however, if the only portion of REC2 on line 4 is the ending attribute character of
the last field of REC2 (which occurs when the last displayed character of the last field of REC2 is in the
last position of line 3), REC2 remains displayed following the display of REC5 with OVERLAY. The
display will have the following records:
REC1
REC2
REC5
REC9
(lines 1 and 2)
(line3)
(lines 4 and 5)
(line 9)
The display is always deleted on the first output operation after the file is opened, except when both
ASSUME and OVERLAY are specified.
OVERLAY is assumed by the i5/OS operating system for ERRMSG, ERRMSGID, PUTOVR, and CLRL
functions.
172
System i: Programming DDS for display files
If OVERLAY is conditioned and not selected, then the ERASE, ERASEINP, MDTOFF, PROTECT, and
PUTRETAIN keywords cannot take effect if they are selected, unless the PUTOVR keyword is selected. In
such cases, the ERASE, ERASEINP, and MDTOFF keywords can take effect.
If you specify OVERLAY, you should also specify the RSTDSP(*YES) keyword on the CRTDSPF (Create
Display File) or CHGDSPF (Change Display File) command. Otherwise, data on the display can be lost if
the file is suspended.
To delete any of the records on the display, use the ERASE keyword to specify the names of the record
formats to be deleted.
If you also specify the CLRL keyword, processing proceeds according to the CLRL specification, not the
OVERLAY specification.
A warning message is sent at file creation time if the OVERLAY keyword is specified on a record with
the DSPMOD keyword. At run time, the OVERLAY keyword is ignored when the display mode changes.
Option indicators are valid for this keyword.
Example
The following example shows how to specify the OVERLAY keyword.
|...+....1....+....2....+....3....+....4....+....5....+....6....+....7....+....8
00021A
R RECL
OVERLAY
A
Related reference
“WINDOW (Window) keyword for display files” on page 255
You use this record-level keyword to specify that the record format you are defining will be displayed
using a window.
OVRATR (Override Attribute) keyword for display files
You use this field-level or record-level keyword with the PUTOVR keyword to override the existing
display attributes of a field or record that is already on the display.
The OVRATR keyword can be used with the OVRDTA keyword on the same field or record.
When OVRATR is specified at both the record and field level, the field level specification is used for that
field.
See the Application Display Programming book
that are used in the System/36 environment.
for information about how to use OVRATR in files
This keyword has no parameters.
The display attributes that can be overridden by the OVRATR keyword are:
CHECK(ER)
CHECK(ME)
DSPATR (all except OID and SP)
DUP
When the OVRDTA keyword is in effect, the display attribute can also be overridden on the same output
operation (as if the OVRATR keyword were also in effect).
DDS for display files
173
When the OVRATR keyword is specified at the field level, it is valid only with the following types of
fields:
v Input-only
v Output-only
v Input/output
v Constant
When the OVRATR keyword is specified at the record level, it applies to each of the following types of
fields:
v Input-only
v Output-only
v Input/output
v Constant
Option indicators are valid for this keyword.
For a discussion and an example of how to use the OVRATR keyword, see “PUTOVR (Put with Explicit
Override) keyword for display files” on page 184.
OVRDTA (Override Data) keyword for display files
You use this field-level or record-level keyword with the PUTOVR keyword to override the existing data
contents of a field or record that is already on the display.
The OVRDTA keyword can be used with the OVRATR keyword on the same field or record.
When OVRDTA is specified at both the record and field level, the field-level specification will be used for
that field.
This keyword has no parameters.
OVRDTA is required if the DFT keyword is specified for output-only or input/output fields.
When OVRDTA is specified at the field level, it is valid only with the following types of fields:
v Output-only
v Input/output
v Message
When the OVRDTA keyword is specified at the record level, it applies to each of the following types of
fields:
v Output-only
v Input/output
v Message
Option indicators are valid for this keyword.
For a discussion and an example of how to use the OVRDTA keyword, see “PUTOVR (Put with Explicit
Override) keyword for display files” on page 184.
174
System i: Programming DDS for display files
PAGEDOWN/PAGEUP (Page Down/Page Up) keywords for display files
You use these file-level or record-level keywords to specify that your program handles any situation
where the workstation user has pressed the Page Down or Page Up keys and the i5/OS operating system
cannot page through the display.
If this situation occurs and you have not specified this keyword (whichever one is appropriate), the
i5/OS operating system sends an error message indicating that the key is not valid at that time.
See “System/36 environment considerations for display files” on page 261 for special considerations
when you specify the PAGEDOWN/PAGEUP keywords in files that are used in the System/36
environment.
The format for each of these keywords is:
PAGEDOWN[(response-indicator ['text'])]
PAGEUP[(response-indicator ['text'])]
You can specify a response indicator with these keywords. If you do, and the appropriate Page key is
pressed, the i5/OS operating system sets on the specified response indicator within the input record and
returns control to your program after it processes the input data. If you do not specify a response
indicator and the specified Page key is pressed, the i5/OS operating system performs normal input
record processing.
The optional text is included on the computer printout created at program compilation to explain the
intended use of the indicator. This text functions only as a comment in the file or program. The single
quotation marks are required. If you specify more than 50 characters between the single quotation marks,
the text is truncated to 50 characters on the program computer printout.
These keys cause data to be returned from the display device to your program (similar to command
function (CF) and Enter keys).
The ROLLUP keyword cannot be specified with PAGEDOWN. The ROLLDOWN keyword cannot be
specified with PAGEUP.
Note: PAGEDOWN is the same as ROLLUP; PAGEUP is the same as ROLLDOWN.
If the operating system is performing the page function for subfiles (SFLSIZ value does not equal
SFLPAG value), you do not need to specify these keywords. For a description of what happens when
PAGEDOWN and PAGEUP are specified for a subfile, see “SFLROLVAL (Subfile Roll Value) keyword for
display files” on page 228.
Option indicators are valid for these keywords.
Example
The following example shows how to specify the PAGEDOWN and PAGEUP keywords.
|...+....1....+....2....+....3....+....4....+....5....+....6....+....7....+....8
00010A N64
PAGEUP(52 'Page Up')
A
PAGEDOWN(61)
A
Related reference
“ALTPAGEDWN/ALTPAGEUP (Alternative Page Down/Alternative Page Up) keyword for display
files” on page 32
You use these file-level keywords to assign command function (CF) keys as alternative Page
Down/Page Up keys.
DDS for display files
175
PASSRCD (Passed Record) keyword for display files
You use this file-level keyword to specify the record format to be used by the i5/OS operating system
when another program passes unformatted data to your program.
The passed data is processed only if your program’s first request after file open is an input operation
without a record format name. The data must be processed according to this record format.
The format of the keyword is:
PASSRCD(record-format-name)
The record-format-name is a required parameter value for this keyword and must exist in the file. The
following keywords cannot be specified on the record format:
ALWROL
CLRL
SLNO
Option indicators are not valid for this keyword.
Example
The following example shows how to specify the PASSRCD keyword.
|...+....1....+....2....+....3....+....4....+....5....+....6....+....7....+....8
00010A
PASSRCD(RECKEEP)
00020A
R RECORD
A
PRINT (Print) keyword for display files
You use this file-level or record-level keyword to specify that the workstation user can press the Print key
to print the current display.
See “System/36 environment considerations for display files” on page 261 for special considerations
when you specify the PRINT keyword in files that are used in the System/36 environment.
The format of the keyword is:
PRINT[(response-indicator ['text']) ∨ (*PGM) ∨
([library-name/]printer-file-name)]
The following four examples illustrate the four ways you can specify the PRINT keyword:
PRINT
PRINT(01 'User presses Print key')
PRINT(*PGM)
176
System i: Programming DDS for display files
The i5/OS operating system spools the output to printer
file QSYSPRT unless you specify another printer file for
the workstation on the PRTFILE parameter on the
CRTDEVDSP or CHGDEVDSP commands. See PRINT
keyword without parameter values.
Your program is given control and decides what to do
(for example, produce formatted printer output). The
response indicator is set on. No data is sent from the
device.
Control returns to your program when the Print key is
pressed.
PRINT(LIB1/PRINTFILE1)
The i5/OS operating system spools the output to the
specified printer file (which can be defined through DDS
or on the PRTFILE parameter on the CRTDEVDSP or
CHGDEVDSP commands). An Override with Printer File
(OVRPRTF) command, if in effect before the printer file is
opened (when the Print key is pressed), can change the
printer device name.
Further considerations of the ways to specify the PRINT keyword are discussed in the following sections.
If you specify the PRINT keyword in any form, the workstation user can print a display containing the
message help. In this case, the print operation is performed as if the PRINT keyword were specified with
no parameters.
PRINT keyword without parameter values for the local workstation
The i5/OS operating system spools the output to the specified printer file (which can be defined through
DDS or on the PRTFILE parameter on the CRTDEVDSP or CHGDEVDSP commands).
Nondisplay fields appear as blanks. Duplicated characters entered by pressing the Dup key appear as
asterisks (*). Display attributes appear as blanks. If the print function cannot be performed successfully,
the i5/OS operating system attempts to complete the print function using the printer file specified on the
PRTFILE parameter on the CRTDEVDSP or the CHGDEVDSP command that is used to describe the
display device to the system.
For workstation printers attached through the workstation controller, a message indicating that there is a
problem is sent to the workstation user requesting the print function. The workstation user can make the
printer ready or press the Reset key. To cancel a print request before it is complete, the workstation user
can press and hold the Shift key, then press the Print key.
Note: After the current display is printed, the paper is advanced twice the number of lines as in the
current display size (48 lines for a 24 x 80 display, and 54 lines for a 27 x 132 display).
PRINT keyword without parameter values for the remote workstation
The i5/OS program attempts to print the display image on the associated workstation printer without
sending the data through the system. The associated workstation printer is the printer device specified on
the PRINTER parameter of the CRTDEVDSP or CHGDEVDSP command that is used to describe the local
display device to the system.
If the printer is not ready when the Print key is pressed, no specific message is sent to the user. The
workstation requesting the print function remains inoperable until the printer is made ready, or until the
print request is canceled (by using the shifted Print key).
Note: After the current display is printed, the paper is advanced the same number of lines as in the
current display size (24 lines for a 24 x 80 display, and 27 lines for a 27 x 132 display).
Option indicators are valid for this keyword.
Example: PRINT keyword with no parameter values
The following example shows how to specify the PRINT keyword with no parameter values.
|...+....1....+....2....+....3....+....4....+....5....+....6....+....7....+....8
00010A
PRINT
00020A
R RECORD1
A
DDS for display files
177
Example: PRINT keyword with a response indicator or *PGM special value
If you specify the PRINT keyword with a response indicator, the i5/OS operating system returns control
to your program with the specified response indicator set on. No data is received from the device. The
keyboard is locked until your program sends another output operation to the display file. There is no
difference in the print function between local and remote workstations. If you specify *PGM, the i5/OS
operating system returns control to your program. The only difference between these two forms is the
response indicator; all other processing is the same.
The optional text for the response indicator form is included on the computer printout created at
program compilation time to explain the intended use of the indicator. This text functions only as a
comment. The single quotation marks are required. If you specify more than 50 characters between the
single quotation marks, the text is truncated to 50 characters on the program computer printout.
The following example shows how to specify the PRINT keyword with a response indicator.
|...+....1....+....2....+....3....+....4....+....5....+....6....+....7....+....8
00010A
PRINT(01 'User presses Print key')
00020A
R RECORD1
A
The following example shows how to specify the PRINT keyword with the *PGM special value.
|...+....1....+....2....+....3....+....4....+....5....+....6....+....7....+....8
00010A
PRINT(*PGM)
00020A
R RECORD1
A
Example: PRINT keyword with a specified printer file
The i5/OS program reads the display buffer and prints the display image using the specified printer file.
The printer file that you specify as a parameter value for this keyword can be either an externally
described or a program-described file. It also can be either spooled or nonspooled. If you specify an
externally described printer file, it must contain a record format with the same name as the file.
The printer file must exist and be authorized to the user of the display when the Print key is pressed.
This also applies to the library name if it is specified. If the i5/OS operating system is unable to perform
the print function on the specified printer file, it attempts to use the printer file specified on the PRTFILE
parameter of the CRTDEVDSP or the CHGDEVDSP command. SPOOL(*YES) should be specified on the
CRTPRTF or CHGPRTF command to prevent the keyboard from locking.
If you do not specify the library name, the current library list at program run time is used.
The following example shows how to specify that the display is to be directed to printer file,
LIB1/PRINTFILE1.
|...+....1....+....2....+....3....+....4....+....5....+....6....+....7....+....8
00010A
PRINT(LIB1/PRINTFILE1)
00020A
R RECORD1
A
Related reference
“OPENPRT (Open Printer File) keyword for display files” on page 171
You use this file-level keyword to specify that after the printer file is opened (the first time the user
presses the Print key), it is to remain open until the associated display file is closed.
PROTECT (Protect) keyword for display files
You use this record-level keyword with the OVERLAY keyword to specify that when the record you are
defining is displayed, all input-capable fields already on the display are to be changed to output-only
fields.
178
System i: Programming DDS for display files
This protects them from input typing. This keyword does not affect the record format in which it is
specified. The data contents of the affected fields are not changed, but your program cannot read them
unless it first displays the record formats again in which the input-capable fields are specified.
To protect a single field from input typing, see the DSPATR(PR) keyword.
This keyword has no parameters.
The OVERLAY keyword must be specified in the record format in which PROTECT is specified. Also,
either the OVERLAY keyword or the CLRL keyword must be in effect for PROTECT to be in effect.
You can use PROTECT to protect input-capable fields in other records only on the first output operation
for which you have selected PUTOVR. On subsequent output operations, PROTECT is in effect only if the
PUTOVR keyword is not in effect.
If the ERASEINP and PROTECT keywords are both in effect for an output operation, the i5/OS operating
system first erases the input-capable fields specified on the ERASEINP parameter value, then protects all
input-capable fields on the display from input typing.
A warning message appears at file creation time if the PROTECT keyword is specified on a record with
the DSPMOD keyword. At run time, the PROTECT keyword is ignored when the display mode changes.
Option indicators are valid for this keyword.
Example
The following example shows how to specify the PROTECT keyword.
|...+....1....+....2....+....3....+....4....+....5....+....6....+....7....+....8
00010A
R RECORD1
00020A
FLD1
5
I 5 3
00030A
00040A
R RECORD2
OVERLAY
00050A 32
PROTECT
00060A
FLDA
10
I 6 3
A
In this example, RECORD1 has an input-capable field that has been displayed and read and that should
be left on the display while RECORD2 is displayed and read. To prevent further entries in FLD1 in
RECORD1, send an output operation to RECORD2 with PROTECT in effect. When this is done, FLDA is
not protected, but FLD1 is protected.
PSHBTNCHC (Push Button Field Choice) keyword for display files
You use this field-level keyword to define a choice for a push button field.
The format of the keyword is:
PSHBTNCHC(choice-number choice-text [command-key] [*SPACEB])
The choice-number parameter defines an identification number for this choice. This parameter is required.
The choice number returns to the application to indicate which choice in the push-button field was
selected. Valid values for the choice-number are positive integers greater than 0 and less than or equal to
99. Duplicate choice-number values within a push-button field are not allowed.
The choice-text parameter defines the text that appears in the push-button field for the choice. This
parameter is required. The parameter can be specified in one of two forms:
v As a character string: ’Choice text ’
v As a program-to-system field: &field-name
DDS for display files
179
The field specified must exist in the same record as the selection field and must be defined as a character
field with usage P.
The choice text must fit on one line of the display for the smallest display size specified for the file. The
maximum length for the choice text depends on the following conditions:
v Position of the push-button field
v Length of the choice text
v Gutter width between choices
v Number of columns of choices
v Smallest display size
v Window width, if displayed in a window
Within the choice text, you can specify a mnemonic for the choice by using a greater than character (>) to
indicate the mnemonic character. The character to the right of the > is the mnemonic. The mnemonic is
used only on a character-based graphical display attached to a controller that supports an enhanced
interface for nonprogrammable workstations. Examples of specifying mnemonics:
Choice text
Appears as
’F2=>File’
F2=File
’F3=F>inish’
F3=Finish
’>Enter’
Enter
In order to specify > as a character in the text, you must specify it twice, just as you must specify the
apostrophe character twice in order to get a single apostrophe character in the text. For example:
Choice text
Appears as
’X >>= 1’
X >= 1
’X >>>= 1’
X >= 1
Note: You cannot specify the > as the mnemonic.
The mnemonic character indicated must be a single-byte character and must not be a blank. Only one
mnemonic is allowed in the choice text, and the same mnemonic character should not be specified for
more than one choice. If the same mnemonic character is used more than once than the first definition of
the mnemonic is used.
The command-key parameter is optional and indicates which function key should be generated when this
push-button choice is selected. The following keys can be used as parameters: CA01 to CA24, CF01 to
CF24, PRINT, HELP, CLEAR, ENTER, HOME, ROLLUP, and ROLLDOWN. If the command-key specified
is not defined at the file level for this record, then the key will be added to this record. If a parameter is
not defined then ENTER will be used.
The *SPACEB parameter is optional and indicates that a blank spot where this choice will be located
should be inserted before this choice. This parameter is used to specify logical grouping of choices.
180
System i: Programming DDS for display files
When the PSHBTNCHC keyword is specified on a field, the PSHBTNFLD keyword must also be
specified.
Several PSHBTNCHC keywords can be specified for one push-button field. The number of PSHBTNCHC
keywords that can be specified depends on the position of the push-button field and the display size.
More than one choice can occupy one line, and all choices must fit on the smallest display size specified
for the file. The maximum number of choices is 99.
Option indicators are valid for this keyword. When a PSHBTNCHC keyword is off, the list of choices is
compressed.
Push buttons always behave as if AUTOENT and AUTOSLT are on.
Example
The following example shows how to specify the PSHBTNCHC keyword:
|...+....1....+....2....+....3....+....4....+....5....+....6....+....7....+....8
A
A
A
A
A
A
A
A
A
A
A
R RECORD
:
:
F1
01
F3
2Y 0B 24 02PSHBTNFLD
PSHBTNCHC(1 '>Help' HELP)
PSHBTNCHC(2 &F3 CA03)
PSHBTNCHC(3 'E>nter')
4A P
In this example, three choices are defined for the push-button field F1. The text for choice 2 is contained
in field F3, and the mnemonic for choice 2 must be contained in the text supplied by the application at
run time. If indicator 01 is off when the record is written, only choices 2 and 3 are displayed.
PSHBTNFLD (Push Button Field) keyword for display files
You use this field-level keyword to define a field as a push button field.
A push button field is a field that contains a fixed number of push buttons from which a user can select.
The field appears as a list of command keys each enclosed with ’<>’ or as a group of push buttons.
The format of the keyword is:
PSHBTNFLD[([*NORSTCSR ∨ *RSTCSR]
[(*NUMCOL nbr-of-cols) ∨ (*NUMROW nbr-of-rows)]
[(*GUTTER gutter-width)])]
The parameters are optional and can be entered in any order. When no parameter is specified, the push
button field choices are arranged horizontally. *GUTTER parameter is set to 3 as default and the field will
be displayed using as many lines as it takes to display all of the choices. There will be 3 spaces between
each choice.
The RSTCSR parameter specifies whether the arrow keys should be allowed to move the selection cursor
outside of the field. *RSTCSR specifies that the arrow keys will not cause the selection cursor to move
outside of the push-button field. *NORSTCSR specifies that the arrow keys will cause the selection cursor
to leave the field. The default is *NORSTCSR.
The *NUMCOL parameter specifies that this field should be displayed in multiple columns with the
choices arranged across the columns in this manner:
DDS for display files
181
< F1 >
< F4 >
< F7 >
< F2 >
< F5 >
< F8 >
< F3 >
< F6 >
< F9 >
Nbr-of-rows specifies how many rows the push-button field should contain. Nbr-of-rows must be a
positive integer and the entire single-choice push-button field must be able to fit on the display when
placed in the specified number of rows.
The *GUTTER parameter specifies the number of blanks to be placed between each column of the
push-button field. Unlike the SNGCHCFLD keyword, it can be specified even if *NUMCOL or
*NUMROW have not been specified. The gutter-width must be a positive integer. If *GUTTER is not
specified, the default of gutter-width is set to three blanks. The gutter value must be a number greater
than one.
For more information about how to support different device configurations, see the Application Display
Programming book
.
A field containing the PSHBTNFLD keyword must also contain one or more PSHBTNCHC keywords
defining the choices for the field.
The field containing the PSHBTNFLD keyword must be defined as an input-capable field with data type
Y, length equal to 2, and decimal positions of 0. The position specified for the field is the position of the
first push-button choice. For input, the field contains the number of the choice selected, or 0 if no choice
was selected. For output, the value of the field is ignored.
The following keywords can be specified on a field with the PSHBTNFLD keyword:
ALIAS
CHANGE
CHCAVAIL
CHCUNAVAIL
CHCCTL
INDTXT
NOCCSID
PSHBTNCHC
DSPATR(PC)
TEXT
Option indicators are not valid for this keyword.
Example
The following example shows how to specify the PSHBTNFLD keyword.
|...+....1....+....2....+....3....+....4....+....5....+....6....+....7....+....8
A
A
R RECORD
A
:
A
:
A
2 40'MENU'
A
F1
2Y 0B 24 02PSHBTNFLD
A
PSHBTNCHC(1 'Cmd1' CF01)
A
PSHBTNCHC(2 'Enter')
A 01
A
In this example, when using a graphical display station attached to a controller that supports an
enhanced interface for non-programmable workstations, the push-button fields look like this:
182
System i: Programming DDS for display files
PULLDOWN (Pull-Down Menu) keyword for display files
You use this record-level keyword to define a record as a pull-down menu for a menu bar.
When this record is written, it is saved by the system and displayed later as a pull-down menu for a
menu-bar choice.
The format of the keyword is:
PULLDOWN[(*SLTIND | *NOSLTIND)]
[(*NORSTCSR | *RSTCSR)]
The parameters are optional.
The SLTIND parameter specifies whether the selection indicators (such as radio buttons) for a selection
field in the pull-down menu are displayed. *SLTIND specifies that the selection indicators should be
displayed. *NOSLTIND specifies that the selection indicators should not be displayed. The default is
*SLTIND.
The RSTCSR parameter specifies if the user should be allowed limited function when the cursor is
outside of the pull-down window. When *NORSTCSR is specified and the cursor is outside of the
pulldown window, the user will be allowed to press a function key and have it function as if the cursor
were within the window. When *RSTCSR is specified, if the user attempts to press a function key while
the cursor is outside of the pulldown window, the user will receive a beep and the cursor will be placed
inside the pulldown-window. Control will not be returned to the application. The default is *NORSTCSR.
A record containing the PULLDOWN keyword is considered a window record, although the WINDOW
keyword cannot be used. The system calculates the dimensions of the pull-down window and generates
the border.
The following keywords cannot be specified on a record with the PULLDOWN keyword:
ALARM
ALTNAME
ALWGPH
ALWROL
ASSUME
CLEAR
CLRL
ERASE
ERASEINP
FRCDTA
HLPCLR
HLPSEQ
INVITE
INZRCD
MDTOFF
MNUBAR
OVERLAY
OVRATR
OVRDTA
PUTOVR
PUTRETAIN
RTNDTA
SFL
SLNO
USRDFN
WDWTITLE
WINDOW
Option indicators are not valid for this keyword.
Example
The following example shows how to specify the PULLDOWN keyword:
|...+....1....+....2....+....3....+....4....+....5....+....6....+....7....+....8
A
A
R MENUBAR
MNUBAR
A
MNUFLD
2Y 0B 1 2
DDS for display files
183
A
A
A
A
A
A
A
R PULLFILE
:
:
MNUBARCHC(1 PULLFILE 'File
:
:
PULLDOWN
')
In this example, record PULLFILE is defined as a pull-down menu for a menu-bar choice. When record
PULLFILE is written, the system saves it and displays it when it is selected from the menu bar. When the
system displays the PULLFILE record, it calculates the dimensions needed for the pull-down window
based on the contents of the PULLFILE record, and generates the pull-down border accordingly.
PUTOVR (Put with Explicit Override) keyword for display files
You use this record-level keyword to enable the override of either display attributes or data contents (or
both) of specific fields within a record that is displayed on a workstation device. By using the PUTOVR
keyword, you can reduce the amount of data sent to the display device.
This keyword has no parameters.
If you use the PUTOVR keyword and subfiles, certain restrictions apply. See the Application Display
for more information about these restrictions and how to use PUTOVR in files
Programming book
that are used in the System/36 environment..
When selected fields in a record that has already been displayed are to be changed, an output or an
input/output operation sent to the record with the PUTOVR, OVRDTA, and OVRATR keywords in effect
changes only the fields for which the OVRDTA or OVRATR keyword is in effect. The OVRDTA keyword
permits a change in the data contents of the field and the OVRATR keyword permits a change in the
display attributes of the field. The way in which fields are to be changed is controlled by setting option
indicators.
The following conditions cause the Put-Override keywords to be ignored and no error to occur:
v PUTOVR is not in effect at the time of the output operation.
v Neither the OVRDTA nor OVRATR keyword is in effect at the time of the output operation.
v The record format is not already on the display.
The PUTOVR and OVRDTA keywords must be specified when DFT is specified for a named
output-capable field. When the PUTOVR and OVRDTA keywords are both in effect for a field, the default
value specified with the DFT keyword is displayed only on the first display of the field. On subsequent
displays with the PUTOVR and OVRDTA keywords in effect, the program value is displayed.
If a field is not displayed on the first output operation to a record format, certain restrictions apply. These
restrictions apply when, on a subsequent output operation, the field is selected for display and the
put-override keywords are also in effect:
v For output-only fields for which the OVRDTA or OVRATR keyword is selected, the i5/OS operating
system does not send an ending attribute character. Any display attributes (such as reverse image) are
continued across the display until the beginning attribute character of the next field on the display. You
should display output-only fields on the first output operation (perhaps with the DSPATR(ND)
keyword so they cannot be seen) in order to provide an ending attribute character for later overrides.
v For input-capable or message fields for which the OVRDTA or OVRATR keyword is selected, the
i5/OS operating system sends an ending attribute character. This field must be displayed on the initial
output operation.
The PUTRETAIN keyword and the PUTOVR keyword cannot be specified on the same record format.
184
System i: Programming DDS for display files
The OVRDTA keyword is permitted only with output-only (usage O), input/output (usage B),
program-to-system (usage P), or message (usage M) fields.
The OVRATR keyword is permitted only with output-only (usage O), input-only (usage I), or
input/output (usage B) fields.
If you specify PUTOVR, you should also specify RSTDSP(*YES) on the Create Display File (CRTDSPF) or
Change Display File (CHGDSPF) command. Otherwise, data on the display can be lost if the file is
suspended.
A warning message is sent at file creation time if the PUTOVR keyword is specified on a record with the
DSPMOD keyword. At run time, the PUTOVR keyword is ignored when the display mode changes.
The OVRATR keyword can be used only to override the following display attributes:
CHECK(ER)
CHECK(ME)
DUP
DSPATR (all except OID and SP)
An output operation with the OVRDTA keyword in effect does not need to have the OVRATR keyword
in effect to override display attributes, as well as data contents, of the field or fields being overridden.
Option indicators are valid for the PUTOVR, OVRATR, and OVRDTA keywords.
Example
The following example shows how to specify the PUTOVR, OVRATR, and OVRDTA keywords.
|...+....1....+....2....+....3....+....4....+....5....+....6....+....7....+....8
00010A
R INVRCD
PUTOVR
00020A
FLD1
1 26'INVENTORY REMAINING IN WAREHOUSE 1'
00030A*
00040A
3 2'Remaining on hand:'
00050A
OVRATR
00060A 11
DSPATR(HI)
00070A*
00080A
INVBAL
5Y 0
+2
00090A 12
OVRDTA
00100A*
00110A
+2'Low on stock' OVRATR
00120A N70
DSPATR(ND)
00130A 70
DSPATR(HI)
00140A*
00150A
SUPPPL
20
B 5 2DFT('INTERNAL')
00160A 13
OVRDTA
00170A*
00180A
ACCT
20
6 2OVRDTA
00190A
DSPATR(HI)
00200A 14
DSPATR(RI)
A
An initial output operation generates a full display of information; on a second output operation,
PUTOVR is in effect and the program can set option indicators to make the following changes to the
display:
v If option indicator 11 is set on, the Remaining on hand: constant field will be changed to a highlighted
field. To reset the display attribute to normal, display the record format again with option indicator 11
off.
v If option indicator 12 is set on, the program can change the displayed value of the field INVBAL.
DDS for display files
185
v If option indicator 70 is set off, the Low on stock constant field is a nondisplay field. If option indicator
70 is set on, the field is changed to a highlighted field.
v If option indicator 13 is set on, the program can set the value of the field SUPPL to override the default
value (INTERNAL). The first displayed value is always INTERNAL; to display the value INTERNAL
again after changing it to something else, the program must set the value of the field to INTERNAL
before displaying it again.
v If option indicator 14 is set on, the display attribute of the field ACCT is changed from highlight to
highlight and reverse image at the same time that new data is sent to the field. If option indicator 14 is
set off, the display attribute is changed back to highlight. New data is sent to the display on each
output operation.
Related reference
“DFT (Default) keyword for display files” on page 83
You use this field-level keyword to specify the constant value for constant fields (unnamed fields) and
to specify a default value for named fields.
PUTRETAIN (Put-Retain) keyword for display files
You use this record-level or field-level keyword with the OVERLAY keyword to prevent the i5/OS
operating system from deleting data that is already on the display when the system displays the record
again. The PUTOVR keyword has a function similar to, but more effective than, the PUTRETAIN
keyword.
This keyword has no parameters.
To understand what effect this keyword has on output operations, consider the following sequence of
steps:
1. Your program sends an output operation to RECORD1, displaying RECORD1. PUTRETAIN, if in
effect, is ignored. Any data in the record area for RECORD1 is deleted before RECORD1 is displayed.
2. At some later time, with RECORD1 still on the display, your program sends a second output
operation to RECORD1. Two conditions can occur:
v If the PUTRETAIN keyword is not in effect, the i5/OS operating system first deletes the record area
for RECORD1, then displays RECORD1. Fields selected for display at this time are displayed with
new data contents and new display attributes, which can be the same as before. The record area
includes every line on which a field or part of a field for RECORD1 appears.
v If PUTRETAIN is in effect, the i5/OS operating system does not delete the record area for
RECORD1. The data contents of selected fields are not changed. However, the display attributes for
selected fields are sent to the display and can be changed (by selecting which DSPATR keyword is
in effect for this output operation). Fields not selected for display are written over
character-by-character by fields selected for display. (For more information, see When fields are
selected by option indicators.)
Note: When using the field-level PUTRETAIN keyword, the entire record area is deleted if none of the
fields in the record has PUTRETAIN optioned on. If you specify at least one field with unoptioned
field-level PUTRETAIN keyword, this ensures that the record area is not deleted.
If you specify the PUTRETAIN keyword, you should also specify RSTDSP(*YES) on the Create Display
File (CRTDSPF) or Change Display File (CHGDSPF) command. Otherwise, data on the display can be lost
if the file is suspended.
Option indicators are valid for this keyword.
186
System i: Programming DDS for display files
Conditions affecting the PUTRETAIN keyword
PUTRETAIN applies only to the record format for which it is specified, and then only if the record is
already displayed. If the record on which PUTRETAIN is specified is not on the display, PUTRETAIN is
ignored.
If you specify this keyword at the record level, the keyword applies to all fields in the record format that
are selected for display.
This keyword can be specified for more than one field of a record format, but only once per field. This
keyword can be specified at the record level and at the field level within the same record format.
PUTRETAIN cannot be specified with the PUTOVR keyword.
A warning message appears at file creation time if the PUTRETAIN keyword is specified on a record with
the DSPMOD keyword. At run time, the PUTRETAIN keyword is ignored when the display mode
changes.
The OVERLAY keyword must be specified whenever PUTRETAIN is specified.
If the OVERLAY keyword is not in effect, PUTRETAIN is ignored and the entire display deleted before
the record is displayed.
When fields are selected by option indicators
When PUTRETAIN is in effect on an output operation involving field selection, fields in the record
format that are not selected for redisplay are not deleted; they can be partially or completely rewritten by
newly selected fields.
If PUTRETAIN is in effect only for a newly selected field (specified at the field level), only the beginning
attribute character of the field is sent to the display; the ending attribute character is not sent. For fields
without PUTRETAIN in the same record format, the i5/OS operating system sends the display attribute
and the data. If PUTRETAIN is in effect for the whole record (specified at the record level), only the
beginning and ending attribute characters are sent to the display. Thus, the display attribute of a field can
be reset to normal if the field immediately preceding this field is selected and this field is not selected.
For example, assume that the DSPATR(UL) keyword is in effect for two consecutive fields with
overlapping attribute characters. If on an output operation with PUTRETAIN in effect, the first of these
fields is selected and the second field is not selected, the display attribute of the second field is reset to
the normal display attribute. This is because the i5/OS operating system sends the first field to the
display with beginning and ending attribute characters, and its ending attribute character overrides the
beginning attribute character of the second field.
Example
The following example shows how to specify the PUTRETAIN keyword.
|...+....1....+....2....+....3....+....4....+....5....+....6....+....7....+....8
00101A
R CUST
00102A
PUTRETAIN OVERLAY
A
RANGE (Range) keyword for display files
You use this field-level keyword for input-capable fields. The RANGE keyword directs the i5/OS
operating system to perform validity checking on the data that the workstation user types into the field.
DDS for display files
187
The data typed in must be greater than or equal to the lower value, and less than or equal to the higher
value. Note that the i5/OS operating system performs this checking only if the field is changed by the
workstation user or if its changed data tag (MDT) is set on using DSPATR(MDT).
Note: See “CHKMSGID (Check Message Identifier) keyword for display files” on page 65 for information
about defining user-specified error messages.
The format of the keyword is:
RANGE(low-value high-value)
When the field is a character field, the parameter values must be enclosed in single quotation marks.
When the field is numeric, single quotation marks must not be specified.
You cannot specify RANGE on a floating-point field (F in position 35).
Option indicators are not valid for this keyword.
Example
The following example shows how to specify the RANGE keyword.
|...+....1....+....2....+....3....+....4....+....5....+....6....+....7....+....8
00010A
R RECORD1
00020A* Character fields
00030A
FIELD1
1
I 2 2RANGE('B' 'F')
00040A
FIELD2
1
I 3 2RANGE('2' '5')
00050A* Numeric fields
00070A
FIELD3
1 0I 4 2RANGE(2 5)
00080A
FIELD4
4 0B 5 2RANGE(1 1500)
00090A
FIELD5
7 2B 6 2RANGE(100 99999.99)
00100A
FIELD6
3 0B 7 2RANGE(-100 -50)
00110A
FIELD7
3 2I 8 2RANGE(.50 1.00)
00120A
FIELD8
3 2I 9 2RANGE(.5 1)
00130A
FIELD9
5Y 2I 10 2RANGE(.01 999.99)
A
FIELD7 and FIELD8 have equivalent RANGE parameter values. The reason is that for numeric fields,
decimal alignment is based on the number of decimal positions specified in positions 36 through 37. For
FIELD7 and FIELD8, the low value is 0.50 and the high value is 1.00.
Data entered into a numeric field is aligned on the decimal positions specified (in positions 36 through
37), and leading and trailing blanks are filled with zeros. For example, if 1.2 is typed into FIELD9, 00120
is returned to your program. If 100 is typed into FIELD9, 10000 is returned to your program.
REF (Reference) keyword for display files
You use this file-level keyword to specify the name of a file from which field descriptions are to be
retrieved. You can also use this keyword when you want to duplicate descriptive information from
several fields in a previously described record format.
You can code the file name once here rather than on REFFLD keywords with each of the field
descriptions that refer to the file. To refer to more than one file, use the REFFLD keyword. (REF can be
specified only once.)
The format of the keyword is:
REF([library-name/]database-file-name [record-format-name])
188
System i: Programming DDS for display files
If there is more than one record format in the referenced file, specify a record format name as a
parameter value for this keyword to tell the i5/OS operating system which one to use unless the record
formats should be searched sequentially.
The database-file-name is a required parameter for this keyword. The library-name and the
record-format-name are optional.
If you do not specify the library name, the current library list (*LIBL) at file creation time is used. If the
record-format-name is not specified, each record format is searched in order (as they are specified). The
first occurrence of the field name is used. See When to specify REF and REFFLD keywords for DDS files
for the search sequences determined by your choice of REF and REFFLD keywords.
You can specify a distributed data management (DDM) file on this keyword.
When using a DDM file, the database-file-name and library-name are the DDM file and library names on
the source system. The record-format-name is the record format name in the remote file on the target
system.
Note: IDDU files cannot be used as reference files.
Option indicators are not valid for this keyword.
Examples
The following examples show how to specify the REF keyword.
In this example, FLD1 has the same attributes as the first (or only) FLD1 in FILE1.
|...+....1....+....2....+....3....+....4....+....5....+....6....+....7....+....8
00010A
REF(FILE1)
00020A
R RECORD
00030A
FLD1
R
2 2
A
In this example, FLD1 has the same attributes as FLD1 in RECORD2 in FILE1 in LIB1.
|...+....1....+....2....+....3....+....4....+....5....+....6....+....7....+....8
00010A
REF(LIB/FILE1 RECORD2)
00020A
R RECORD
00030A
FLD1
R
2 2
A
Related concepts
“Reference for display files (position 29)” on page 8
You can specify R in this position to use the reference function of the i5/OS operating system. This
function copies the attributes of a previously defined, named field (called the referenced field) to the
field you are defining.
REFFLD (Referenced Field) keyword for display files
You use this field-level keyword to refer to a field when the name, record format, file, or library of the
referenced field differs from its equivalent in positions 19 through 28.
Use this field-level keyword when referring to a field under one of these conditions:
v The name of the referenced field is different from the name in positions 19 through 28.
v The name of the referenced field is the same as the name in positions 19 through 28, but the record
format, file, or library of the referenced field is different from that specified with the REF keyword.
v The referenced field occurs in the same DDS source file as the referencing field.
DDS for display files
189
The format of the keyword is:
REFFLD([record-format-name/]referenced-field-name
[{*SRC | [library-name/]database-file-name}])
The referenced-field-name is required even if it is the same as the referencing field. Use the record format
name when the referenced file contains more than one record format. Use *SRC (rather than the
database-file-name) when the referenced field name is in the same DDS source file as the referencing
field. *SRC is the default value when the database-file-name and library-name are not specified and the
REF keyword is not specified at the file level.
Note: When you refer to a field in the same DDS source file, the field you are referring to must precede
the field you are defining.
Specify the database-file-name (with its library-name, if necessary) to search a particular database file.
If, in the same DDS source file, you specify the REF keyword at the file level and REFFLD at the field
level, the particular search sequence depends on both the REF and REFFLD keywords.
You must specify an R in position 29. In some cases, some keywords specified with the field in the
database file are not included in the display file.
You can specify a distributed data management (DDM) file on this keyword.
When using a DDM file, the database-file-name and library-name are the DDM file and library names on
the source system. The referenced-field-name and the record-format-name are the field name and the
record format name in the remote file on the target system.
Note: IDDU files cannot be used as reference files.
Option indicators are not valid for this keyword.
Example
The following example shows how to specify the REFFLD keyword.
|...+....1....+....2....+....3....+....4....+....5....+....6....+....7....+....8
00010A
R FMAT1
00020A
ITEM
5
3 1
00030A
ITEM1
R
5 2REFFLD(ITEM)
00040A
ITEM2
R
5 12REFFLD(FMAT1/ITEM)
00050A
ITEM3
R
5 22REFFLD(ITEM FILEX)
00060A
ITEM4
R
5 32REFFLD(ITEM LIBY/FILEX)
00070A
ITEM5
R
5 42REFFLD(FMAT1/ITEM LIBY/FILEX)
00080A
ITEM6
R
5 52REFFLD(ITEM *SRC)
A
Related concepts
“Reference for display files (position 29)” on page 8
You can specify R in this position to use the reference function of the i5/OS operating system. This
function copies the attributes of a previously defined, named field (called the referenced field) to the
field you are defining.
When to specify REF and REFFLD keywords for DDS files
RETKEY (Retain Function Keys) and RETCMDKEY (Retain Command
Keys) keywords for display files
You use these record-level keywords to indicate that function keys, command function (CFnn) keys, or
command attention (CAnn) keys, which are enabled on a display, should be retained when the record
you are defining is displayed.
190
System i: Programming DDS for display files
These keywords have no parameters.
See “System/36 environment considerations for display files” on page 261 for information about how to
specify the RETKEY and RETCMDKEY keywords.
RETLCKSTS (Retain Lock Status) keyword for display files
You use this record-level keyword to specify that the system should not unlock the keyboard on the next
input operation. This keyword prevents the loss of data when an input operation is started and data is
already being transmitted from the keyboard.
This keyword has no parameters. Option indicators are valid for this keyword.
Notes:
v Normally an input operation explicitly unlocks the keyboard, even if it is already unlocked.
Any data being transmitted from the keyboard at the time of the unlock can be lost.
v Use this keyword only when the keyboard is already unlocked. Use of this keyword when the
keyboard is locked can prevent input from the keyboard, because the unlock does not occur on
the input operation. The workstation remains in an input-inhibited state.
Example
The following example shows how to specify the RETLCKSTS keyword.
|...+....1....+....2....+....3....+....4....+....5....+....6....+....7....+....8
00010A
00020A
R REC1
INVITE
00030A 10
RETLCKSTS
A
If indicator 10 is on when record REC1 is put to the display, the keyboard is not explicitly unlocked by
the system when the display device is invited.
RMVWDW (Remove Window) keyword for display files
You use this record-level keyword to remove all existing windows on the display before this record is
displayed.
This keyword has no parameters.
When the RMVWDW keyword is specified, a WINDOW keyword must be specified on the same record
format. The RMVWDW keyword functions only when the WINDOW keyword defines a window. The
RMVWDW keyword does not function if the WINDOW keyword specified a record format name.
Option indicators are valid for this keyword.
Example
The following example shows how to specify the RMVWDW keyword.
|...+....1....+....2....+....3....+....4....+....5....+....6....+....7....+....8
A
R WINDOW1
WINDOW(6 15 9 30)
A
FIELD1
5A B 2 2
A
FIELD2
20A B 8 5
A
R WINDOW2
WINDOW(&LINE &POS 9 30)
A 01
RMVWDW
A
FIELD3
5A B 2 2
DDS for display files
191
A
A
A
A
FIELD4
LINE
POS
20A B
2S P
3S P
8
5
WINDOW1 is already on the display. If indicator 01 is set on and WINDOW2 is written to the display,
WINDOW1 is removed before WINDOW2 is displayed. If indicator 01 is off when WINDOW2 is written
to the display, WINDOW1 remains on the display when WINDOW2 is displayed.
ROLLUP/ROLLDOWN (Roll Up/Roll Down) keywords for display files
You can use these file-level or record-level keywords to specify that your program handles any situation
where the workstation user has pressed the Roll Up or Roll Down keys and the i5/OS operating system
cannot move the text lines on the display.
If this situation occurs and you have not specified this keyword (whichever one is appropriate), the
i5/OS operating system sends an error message indicating that the key is not valid at that time.
See “System/36 environment considerations for display files” on page 261 for special considerations
when you specify the ROLLUP and ROLLDOWN keywords in files that are used in the System/36
environment.
The format for each of these keywords is:
ROLLUP[(response-indicator ['text'])]
ROLLDOWN[(response-indicator ['text'])]
You can specify a response indicator with these keywords. If you do, and the appropriate paging key is
pressed, the i5/OS operating system sets on the specified response indicator within the input record and
returns control to your program after it processes the input data. If you do not specify a response
indicator and the specified paging key is pressed, the i5/OS operating system performs normal input
record processing.
The optional text is included on the computer printout created at program compilation to explain the
intended use of the indicator. This text functions only as a comment in the file or program. The single
quotation marks are required. If you specify more than 50 characters between the single quotation marks,
the text is truncated to 50 characters on the program computer printout.
These keys cause data to be returned from the display device to your program (similar to command
function (CF) and Enter keys).
The PAGEDOWN keyword cannot be specified with ROLLUP. The PAGEUP keyword cannot be specified
with ROLLDOWN.
Note: The ROLLUP keyword is the same as the PAGEDOWN keyword. The ROLLDOWN keyword is
the same as the PAGEUP keyword. Roll is the same as page.
If the operating system is performing the paging function for subfiles (SFLSIZ value does not equal
SFLPAG value), you do not need to specify these keywords. For a description of what happens when the
ROLLUP and ROLLDOWN keywords are specified for a subfile, see “SFLROLVAL (Subfile Roll Value)
keyword for display files” on page 228.
Option indicators are valid for these keywords.
Example
The following example shows how to specify the ROLLUP and ROLLDOWN keywords.
192
System i: Programming DDS for display files
|...+....1....+....2....+....3....+....4....+....5....+....6....+....7....+....8
00010A N64
ROLLDOWN(52 'Roll Down')
A
ROLLUP(61)
A
RTNCSRLOC (Return Cursor Location) keyword for display files
You use this record-level keyword to return the location of the cursor to an application program.
This keyword can be specified in two formats. These formats are:
v Return the name of the record and field in which the cursor is currently positioned. Optionally, a third
parameter can be specified that will contain the relative cursor position within the field.
v Return the row and column position of the cursor relative to the display. Optionally, two additional
parameters can be provided that will return either the row and column position of the cursor relative
to the active window (if one exists) or the location of the cursor at the beginning of the two-event
mouse button definition.
The formats of the keyword is:
RTNCSRLOC([*RECNAME]
&cursor-record &cursor-field
[&cursor-position])
or
RTNCSRLOC({*WINDOW | *MOUSE}
&cursor-row &cursor-column
[&cursor-row2
[&cursor-column2]])
The parameter for the first format are:
v The *RECNAME parameter indicates that RTNCSRLOC should return the name of the record and field
on which the cursor is positioned. Optionally, it will also return the relative position of the cursor with
the field. This parameter is optional.
v The cursor-record parameter specifies the name of a hidden field that, on input, will contain the name
of the record on which the cursor is located. The field must be defined in the record format as a
character (A in position 35) field of length 10, with usage H (hidden). If the cursor is not in a record
area on input, the cursor-record field will contain blanks.
v The cursor-field parameter specifies the name of a hidden field that, on input, will contain the name of
the field on which the cursor is located. The field must be defined in the record format as a character
(A in position 35) field of length 10, with usage H (hidden). If the cursor is not located on a field on
input, the cursor-field field will contain blanks.
v The optional cursor-position parameter specifies the name of a hidden field that, on input, will contain
the relative position of the cursor within the field on which it is located. The field must be defined in
the record format as a signed numeric (S in position 35) field of length 4, with 0 decimal positions and
usage H (hidden). If the cursor is in the first position of the field, the cursor-position field will contain
the value 1. If the cursor is in the ith position, the cursor-position field will contain the value i. If the
cursor is not located on a field, the cursor-position field will contain the value 0. If the cursor is located
in a menu-bar or selection-field list, then the cursor position parameter returns to the choice number
on which the cursor is located.
All three fields specified on the RTNCSRLOC keyword will contain values on input if the cursor is
outside the area of the record that contains the RTNCSRLOC keyword. The fields also contain values on
input if the cursor is located in a subfile. The cursor-record field will contain a value if the cursor is
located anywhere inside the subfile. The cursor-field and cursor-position fields will contain values if the
cursor is located on a field within the subfile.
The parameters for the second format are:
DDS for display files
193
v The *WINDOW or *MOUSE parameter is used to qualify the cursor-row2 and cursor-column-2
parameters. *WINDOW causes these parameters to return the cursor location relative to the first usable
location in the active window. *MOUSE causes these parameters to return the location of the cursor
just before a two-event mouse definition is processed.
v The cursor-row parameter specifies the name of a hidden field that, on input, contains the number of
row on which the cursor is located. The field must be defined in the record format as a data type S,
field length of 3, usage of H, and zero decimal positions. The value returned in this hidden field will
be relative to the entire display where the first row of the display is row 1.
v The cursor-column parameter specifies the name of a hidden field that, on input, contains the number
of the column on which the cursor is located. The field must be defined in the record format as a data
type S, field length of 3, usage of H, and zero decimal positions. The value returned in this hidden
field will be relative to the entire display where the first column of the display is column 1.
v The optional cursor-row2 parameter specifies the name of a hidden field. If *WINDOW is specified as
the first parameter, the hidden field will contain the relative row position of the cursor to the first
usable location of the active window. If there is no active window, this value will be the same as
&cursor-row. If the cursor is in the first usable position of the window, the cursor-row2 field will
contain the value 1. If the cursor is outside of the active window, it is possible for this value to be a
negative number. If *MOUSE is specified as the first parameter, the hidden field contains the row
number of the cursor at the instant just before a two-event mouse definition is called. If a two-event
mouse definition has not been processed, this field will be set to zero. The field must be defined in the
record format as data type S, field length of 3, usage H, and zero decimal positions.
v The optional cursor-column2 parameter specifies the name of a hidden field. If *WINDOW is specified
as the first parameter, the hidden field will contain the relative column position of the cursor to the
first usable location in the active window. If there is no active window, this value will be the same as
&cursor-column. If the cursor is in the first usable position of the window, the cursor-column2 field
will contain the value 1. If the cursor is outside of the active window, it is possible for this value to be
a negative number. If *MOUSE is specified as the first parameter, the hidden field will contain the
column number of the cursor when the first event of a two-event mouse definition has occurred. If a
two-event mouse definition has not been processed, this field will be set to zero. The field must be
defined in the record format as data type S, field length of 3, usage of H, and zero decimal positions.
Both formats of this keyword can be specified with the same record. If the same hidden field is used
multiple times for any of the parameters, unpredictable results will occur.
Option indicators are not valid for this keyword.
Example
The following example shows how to specify the RTNCSRLOC keyword.
|...+....1....+....2....+....3....+....4....+....5....+....6....+....7....+....8
A
R REC01
RTNCSRLOC(&RCD &FLD &POS);
A
RTNCSRLOC(*MOUSE &ROW &COL);
A
FLD
10A H
A
RCD
10A H
A
POS
4S 0H
A
FLD1A
2A I 3 2
A 10
FLD2A
6A O 3 18
A N10
FLD3A
10A O 3 18
A*
A
R REC02
OVERLAY
A
FLD1A
2A I 5 2
A
FLD2A
10A O 5 5
A
FLD3A
6A O 5 18
A
Both REC01 and REC02 are displayed on the screen and option indicator 10 is off.
194
System i: Programming DDS for display files
The following table shows the values returned when the cursor is at the specified positions.
Row
3
3
3
3
4
5
5
1
Col
2
19
25
40
40
5
40
If Option indicator 10 were on,
Cursor record
REC01
REC01
REC01
REC01
blanks
REC02
REC02
FLD2A would be
Cursor field
Cursor
position
Cursor row
FLD1A
1
3
FLD3A1
2
3
FLD3A
8
3
blanks
0
3
blanks
0
4
FLD2A
1
5
blanks
0
5
returned when the cursor is at row 3 column 19.
Cursor column
2
19
25
40
40
5
40
RTNDTA (Return Data) keyword for display files
You use this record-level keyword to specify that when your program sends an input operation to this
record format, the i5/OS operating system is to return the same data that was returned on the previous
input operation sent to this record format.
The RTNDTA keyword is ignored if the record format has not already been read. When the RTNDTA
keyword is in effect, your program can reread data on the display without requiring the i5/OS operating
system to actually pass data from the display device to your program.
This keyword has no parameters.
The RTNDTA keyword is ignored in the following situations:
v On the input portion of an input/output operation (Put-Get operation)
v On an input operation that is preceded by an output operation to the same record format
The RTNDTA keyword has effect only on an input operation sent to the same record format without an
intervening output operation to that record format.
You can use RTNDTA as follows:
v Use RTNDTA to allow a main program to read a record format that is changed by a workstation user.
The data read tells the main program which subprogram to call. The subprogram sends an input
operation to the same record format, with RTNDTA in effect, to read the same data. This procedure can
substitute for passing parameters to subprograms.
Note: SHARE(*YES) must be specified for both display files.
v Use RTNDTA to allow an RPG III program to perform file maintenance with less locking of records in
the database. For instance, the program reads a database record and displays the record at the display
device. The workstation user reviews the record, makes any required changes, and presses the Enter
key. While the workstation user is making changes, the database record, if locked, is unavailable to
other programs. Hence it is recommended to leave the database record unlocked. However, when the
program reads the record from the display and updates the database record, the database record
overlays the internal representation of the display record in the program. Instead of preventing the
overlay by using different field names for the display record and the database record, the program
rereads the display file. With RTNDTA specified, the program retrieves the display record again and
can then finish updating the database.
If the UNLOCK keyword is specified, the RTNDTA keyword cannot be specified.
Option indicators are not valid for this keyword.
DDS for display files
195
Example
The following example shows how to specify the RTNDTA keyword.
|...+....1....+....2....+....3....+....4....+....5....+....6....+....7....+....8
00010A
R RECORD1
RTNDTA
00020A
FLD1
5
I 2 2
00030A
FLD2
5
B 3 2
A
SETOF (Set Off) keyword for display files
You use this record-level keyword to specify that when an input operation sent to this record format is
completed, the specified response indicator is to be set off.
See “System/36 environment considerations for display files” on page 261 for information about how to
specify the SETOF keyword in files that are used in the System/36 environment.
The format of the keyword is:
SETOF(response-indicator ['text'])
The optional text is included on the computer printout created at program compilation to explain the
intended use of the indicator. This text functions only as a comment in the file or program. The single
quotation marks are required. If you specify more than 50 characters between the single quotation marks,
the text is truncated to 50 characters on the program listing.
This keyword can be used to cause an option indicator that is on for an output operation to be returned
in the off condition when the next input operation to the record is completed. (If no input operation is
performed, the response indicator remains unchanged.) Your program does not need to turn off the
indicator.
SETOF is equivalent to the SETOFF keyword.
Any indicator is valid for this keyword. It does not need to be previously defined as an option or a
response indicator. The indicator becomes a response indicator when you specify SETOF.
If the indicator used with the SETOF keyword is also used with another keyword, such as CHANGE, the
on/off status of the indicator is controlled by the other keyword.
Option indicators are not valid for this keyword.
Example
The following example shows how to specify the SETOF keyword.
|...+....1....+....2....+....3....+....4....+....5....+....6....+....7....+....8
00010A
R CUSMST
SETOF(63 'On=display MSG2000 +
00020A
CONSOLEMSG')
00030A
QRYORD
3 0I 5 3
00040A 63
ERRMSGID(MSG2000 CONSOLEMSG)
A
A MSG2000 message is displayed on the message line when the program sends an output operation to
CUSMST with indicator 63 set on. On the next input operation to CUSMST, the SETOF keyword sets off
indicator 63. (Indicator 63 is used as both an option and a response indicator.)
Related reference
“SETOFF (Set Off) keyword for display files” on page 197
The SETOFF keyword is equivalent to the SETOF keyword.
196
System i: Programming DDS for display files
SETOFF (Set Off) keyword for display files
The SETOFF keyword is equivalent to the SETOF keyword.
The format of the keyword is:
SETOFF(response-indicator ['text'])
The SETOF keyword is preferred.
Related reference
“SETOF (Set Off) keyword for display files” on page 196
You use this record-level keyword to specify that when an input operation sent to this record format
is completed, the specified response indicator is to be set off.
SFL (Subfile) keyword for display files
You use this record-level keyword to specify that this record format is to be a subfile record format.
This record format (including its related field descriptions) must immediately precede the subfile-control
record format (identified by the SFLCTL keyword).
This keyword has no parameters.
At least one displayable field must be specified in the subfile record format, unless the subfile is a
message subfile (SFLMSGRCD keyword). The locations specified for fields in this record format are the
locations on the display where the first subfile record in any one page of the subfile is displayed. The
remaining part of the page of records is displayed below the first record.
The number of records in a page is determined by the parameter value specified for the SFLPAG
keyword.
Displayable fields specified on the subfile-control record format can be displayed at the same time as
subfile records. However, fields specified in the subfile-control record format cannot overlap fields
specified in the subfile record format, even if they are specified with option indicators.
Overlap errors can occur if the first field of either the subfile record or the subfile control record starts in
position 1. A field starting in position 1 has a beginning attribute byte on the previous line. Therefore, the
previous line is also part of the record format.
The number of subfiles (each having one SFL and one SFLCTL keyword specified) that can be specified
in a display file is limited only by the number of record formats permitted in a display file (1024 record
formats, or 512 subfiles, maximum). Twelve subfiles can contain active records or be displayed at one
time.
For display size *DS3, the field will wrap to the next line if the field extends beyond column 80.
Option indicators are not valid for this keyword.
Besides SFL, the following keywords are also valid on the subfile record format:
v For message subfiles:
SFLMSGRCD (required at the record level)
SFLMSGKEY (required at the field level)
SFLPGMQ
DDS for display files
197
v For all other subfiles (at the record level):
CHANGE
CHECK(AB)
CHECK(RL)
CHGINPDFT
INDTXT
KEEP
LOGINP
LOGOUT
SETOF
SETOFF
SFLNXTCHG
TEXT
The following otherwise valid keywords are not valid at the field level when specified for the subfile
record format:
DATE
DFTVAL
ERRMSG
ERRMSGID
MSGID
TIME
Example
The following example shows how to specify the SFL keyword.
|...+....1....+....2....+....3....+....4....+....5....+....6....+....7....+....8
00010A
R SFLR
SFL
A*
00020A*
(at least one displayable field)
A*
00030A
R SFLCTLR
SFLCTL(SFLR)
00040A
SFLPAG(17)
00050A
SFLSIZ(17)
00060A
SFLDSP
00070A
SFLDSPCTL
A
Related reference
“SFLMSGRCD (Subfile Message Record) keyword for display files” on page 220
You use this record-level keyword on the subfile record format to specify that this subfile is to be a
message subfile and that the records displayed when the subfile is displayed are messages from a
program message queue.
“SFLPAG (Subfile Page) keyword for display files” on page 222
You use this record-level keyword on the subfile-control record format to specify the number of
records in the subfile to be displayed at the same time.
SFLCHCCTL (Subfile Choice Control) keyword for display files
You use this field-level keyword on a selection list to control the availability of choices for the list.
The format of the keyword is SFLCHCCTL.
When the SFLCHCCTL keyword is specified on a field, that field will be considered the control field for
that record. That field must be the first field defined in the subfile record. That field must have a length
of 1, data type of Y, decimal positions of zero, and have a usage of H. That field must be defined as the
first field in the subfile. The control field works as follows:
Table 11. Control field for the SFLCHCCTL keyword
Control value
Meaning on output
0
Available
1
Selected
2
Unavailable. Cannot place cursor on
choice unless help for choice is
available.1
198
System i: Programming DDS for display files
Meaning of input
Not selected
Selected
Table 11. Control field for the SFLCHCCTL keyword (continued)
Control value
Meaning on output
Meaning of input
3
Unavailable. Placing cursor on choice
is allowed.
4
Unavailable. Cannot place cursor on
choice even if help for the choice is
available.1
1
Applies only to displays attached to a controller that supports an enhanced interface for nonprogrammable
workstations.
Option indicators are not valid for this keyword.
SFLNXTCHC keyword cannot be specified in a record that contains a field with the SFLCHCCTL
keyword.
Only one SFLCHCCTL keyword can be used in one subfile record.
Example
The following example shows how to specify the SFLCHCCTL keyword.
|...+....1....+....2....+....3....+....4....+....5....+....6....+....7....+....8
A
A
R SFLRCD
SFL
A
CTLFLD
1Y 0H
SFLCHCCTL
A
F1
4A O 6 10
A
R SFLCTLRCD
SFLCTL(SFLRCD)
A
SFLMLTCHC
A
SFLPAG(5) SFLSIZ(&SFLSIZ);
A
SFLDSP SFLDSPCTL
A
ROLLUP(10)
A 10
SFLEND(*SCRBAR)
A
F3
5S 0H
SFLSCROLL
A
F2
4S 0H
SFLRCDNBR(CURSOR *TOP)
A
SFLSIZ
5S 0P
A
1 30'Panel Title'
A
4 5'Multiple selection list:'
SFLCLR (Subfile Clear) keyword for display files
You use this record-level keyword on the subfile-control record format so that your program can clear the
subfile of all records. This keyword differs from the SFLDLT keyword in that the subfile is not deleted.
It differs from the SFLINZ keyword in that after being cleared, the subfile contains no data. Clearing the
subfile does not affect the display. However, after being cleared, the subfile contains no active records.
This keyword has no parameters.
When active records already exist in the subfile and all are to be replaced, your program can send an
output operation to the subfile-control record format after selecting SFLCLR. This clears the subfile and
permits your program to write new records to the subfile (by issuing output operations to the subfile
record format while incrementing the relative record number). Issuing an output operation to an already
active subfile record causes an error message to be returned to your program.
If SFLCLR is in effect on an output operation and no records exist in the subfile, SFLCLR is ignored.
This optional keyword is valid only for the subfile-control record format. Display size condition names
are not valid for this keyword.
DDS for display files
199
An option indicator is required for this keyword to prevent the i5/OS operating system from clearing the
subfile on every output operation to the subfile-control record format.
Example
The following example shows how to specify the SFLCLR keyword.
|...+....1....+....2....+....3....+....4....+....5....+....6....+....7....+....8
00010A
R SFLR
SFL
A*
A*
(at least one displayable field)
A*
00020A
R SFLCTLR
SFLCTL(SFLR)
00030A
SFLPAG(17)
00040A
SFLSIZ(17)
00050A 01
SFLDSP
00060A 01
SFLDSPCTL
00070A N01
SFLCLR
A
The subfile is displayed when option indicator 01 is set on for an output operation to SFLCTLR, and the
subfile is cleared when option indicator 01 is set off for an output operation to SFLCTLR. Normally, the
option indicators specified for SFLCLR are the reverse of the option indicators specified for the SFLDSP
and SFLDSPCTL keywords.
SFLCSRPRG (Subfile Cursor Progression) keyword for display files
You use this field-level keyword to define that when the cursor leaves the field, it goes to the same field
in the next subfile record instead of the next field in the same record.
The SFLCSRPRG keyword is ignored when the workstation is not attached to a controller that supports
an enhanced data stream.
This keyword has no parameters.
Option indicators are not valid for this keyword.
The SFLLIN keyword is not allowed in a record that contains the SFLCSRPRG.
Example
The following example shows how to specify the SFLCSRPRG keyword:
|...+....1....+....2....+....3....+....4....+....5....+....6....+....7....+....8
A
A
R SFL01
SFL
A
S1
10A B 5 5SFLCSRPRG
A
S2
10A B 5 25
A
R CTL01
SFLCTL(SFL01)
A
SFLPAG(5) SFLSIZ(20)
A
SFLDSP
SFLDSPCTL
In this example, when the cursor leaves field S1, the cursor goes to S1 in the next subfile record.
SFLCSRRRN (Subfile Cursor Relative Record Number) keyword for
display files
You use this record-level keyword on the subfile-control record format to return the relative record
number of the record on which the cursor is located within a subfile.
200
System i: Programming DDS for display files
If the subfile records occupy more than one line, use this keyword in conjunction with the SFLMODE
keyword to determine the location of the cursor.
The format of the keyword is:
SFLCSRRRN(&relative-record);
The relative-record parameter is required. It specifies the name of a hidden field that, on input, will
contain the relative record number of the subfile record on which the cursor is located. The field must be
defined in the subfile-control record format as a signed numeric (S in position 35) field of length 5, with 0
decimal positions and usage H (hidden).
The relative-record field will contain the value 0 if the cursor is not located in the subfile associated with
this subfile control record, or if the cursor is located within the subfile, but is not in an active record
within the subfile. If the SFLMODE keyword is specified, the mode of the subfile will be returned in
either case.
This keyword can be used on subfiles with field selection or subfiles with the SFLLIN keyword. If the
cursor is located between two horizontal subfile records, the relative record number returned is 0.
For an example of how to specify the SFLCSRRRN keyword, see “SFLMODE (Subfile Mode) keyword for
display files” on page 215.
SFLCTL (Subfile Control) keyword for display files
You use this record-level keyword to specify that this record format is to be a subfile-control record
format. This record format must immediately follow the subfile record format.
The format of the keyword is:
SFLCTL(subfile-record-format-name)
You must specify the name of the subfile record format as the parameter value for this keyword. The
subfile-control record format can contain field descriptions as well as subfile control keywords.
Your program can display subfile records only by issuing an output operation to the subfile-control
record format.
The subfile record format (SFL keyword) defines the format of the records in the subfile as opposed to
the subfile-control record format (SFLCTL keyword), which defines how the subfile can be displayed,
cleared, deleted, and initialized. The program sends output operations to the subfile record format to
build the subfile. It also sends output operations to the subfile-control record format, setting option
indicators for various subfile keywords to display, clear, delete, and initialize the subfile.
The following tables are a summary of subfile keywords used with the SFLCTL keyword. (Field-level
keywords are used with fields in the subfile-control record format.)
Table 12. Required keywords
SFLCTL
SFLDSP
SFLPAG
SFLSIZ
DDS for display files
201
Table 13. Optional keywords
SFLLIN
CHCAVAIL
SFLMCLTCHC
CHCSLT
SFLMSG
CHCUNAVAIL
SFLMSGID
SFLCLR
SFLPGMQ
SFLDLT
SFLRCDNBR
SFLDROP
SFLRNA
SFLDSPCTL1
SFLROLVAL
SFLEND
SFLSCROLL
SFLENTER
SFLSNGCHC
SFLFOLD
SFLINZ
1
The SFLDSPCTL keyword is required if your program sends an input operation to the subfile-control record format.
If subfile size equals subfile page, the following keywords are ignored. When several display sizes are
used (DSPSIZ keyword specified), these keywords are ignored only for display sizes for which subfile
size equals subfile page:
SFLDROP
SFLFOLD
SFLROLVAL
If the subfile record format contains field selection, the following keywords are not valid on the
subfile-control record format:
SFLDROP
SFLFOLD
SFLINZ
SFLLIN
SFLRCDNBR
SFLRNA (because SFLINZ is not valid)
SFLROLVAL
The USRDFN keyword is not valid for the subfile-control record format.
The keywords CHCAVAIL, CHCSLT, and CHCUNAVAIL can be used only if either SFLSNGCHC or
SFLMLTCHC is also used.
Option indicators are not valid for this keyword.
Example
The following example shows how to specify the SFLCTL keyword.
|...+....1....+....2....+....3....+....4....+....5....+....6....+....7....+....8
00010A
R SFLR
SFL
A*
A*
(at least one displayable field)
A*
00020A
R SFLCTLR
SFLCTL(SFLR)
00030A
SFLPAG(17)
00040A
SFLSIZ(17)
00050A
SFLDSP
00060A
SFLDSPCTL
A
Related reference
202
System i: Programming DDS for display files
“SFLMSGKEY (Subfile Message Key) keyword for display files” on page 219
You use this field-level keyword on the first field in the subfile record format for a message subfile
(with Subfile (SFL) and Subfile Message Record (SFLMSGRCD) keywords specified).
“SFLMSGRCD (Subfile Message Record) keyword for display files” on page 220
You use this record-level keyword on the subfile record format to specify that this subfile is to be a
message subfile and that the records displayed when the subfile is displayed are messages from a
program message queue.
“SFLPGMQ (Subfile Program Message Queue) keyword for display files” on page 224
You use this field-level keyword on the second (and last) field in the subfile record format for a
message subfile.
SFLDLT (Subfile Delete) keyword for display files
You use this record-level keyword with an option indicator on the subfile-control record format to enable
your program to delete the subfile.
When the maximum number of subfiles in a display file is already active (24) and another subfile is to be
made active, your program must delete one of the active subfiles before making another active.
This keyword has no parameters.
To make a subfile active, your program sends an output operation to the subfile record format or sends
an output operation to the subfile-control record format with the SFLINZ keyword in effect. To delete a
subfile, your program sends an output operation to the subfile-control record format with SFLDLT in
effect. (Closing the display file deletes all the active subfiles.)
If your program sends an output operation with SFLDLT in effect to a subfile that is not active, the
SFLDLT keyword is ignored.
Option indicators are required for this keyword; display size condition names are not valid.
Example
The following example shows how to specify the SFLDLT keyword.
|...+....1....+....2....+....3....+....4....+....5....+....6....+....7....+....8
00010A
R SFLR
SFL
A*
A*
(at least one displayable field)
A*
00040A
R SFLCTLR
SFLCTL(SFLR)
00050A
SFLPAG(17)
00060A
SFLSIZ(17)
00070A 01
SFLDSP
00080A 01
SFLDSPCTL
00090A 04
SFLDLT
A
The subfile is displayed when option indicator 01 is set on for an output operation to SFLCTLR, and the
subfile is deleted when option indicator 04 is set on for an output operation to SFLCTLR. Normally, the
option indicators specified for SFLDLT are different from the option indicators specified for the SFLDSP
and SFLDSPCTL keywords.
SFLDROP (Subfile Drop) keyword for display files
You use this record-level keyword on the subfile-control record format to assign a command attention
(CA) key or a command function (CF) key that the workstation user can press to fold or truncate subfile
records that require more than one display line.
DDS for display files
203
The format of the keyword is:
SFLDROP(CAnn | CFnn)
Without SFLDROP, the i5/OS operating system displays the entire subfile record and folds it where
needed. When SFLDROP is specified, the i5/OS operating system first displays the subfile in truncated
form; subfile records are truncated to fit on one display line. When the workstation user presses the
specified key, the i5/OS operating system displays the records again in folded form. Each record
continues onto subsequent lines immediately following the line the record starts on.
By pressing the specified key, the form of the displayed subfile changes from one state to the other.
In the truncated form, more records are displayed than are specified on the SFLPAG keyword. In the
folded form, as many records are displayed as are specified on the SFLPAG keyword.
The i5/OS operating system truncates subfile records in the middle of output-only fields. However, if the
truncation is in the middle of an input-capable field, the whole field is omitted from the display. If this
results in omitting the entire record from the display, an error message is sent to the display and the
record is not truncated. Instead, it is displayed in folded form.
Notes:
1. A warning message is sent at file creation if the entire record fits on a single display line.
2. If subfile size equals subfile page, SFLDROP is ignored. When several display sizes are used
(DSPSIZ keyword specified), SFLDROP is ignored only for display sizes for which the subfile
size equals subfile page. If the subfile record format contains field selection, SFLDROP is not
valid.
3. If the subfile contains input-capable fields, it is recommended that you specify a CF key rather
than a CA key. If you specify a CA key in this situation, changed data is lost when the key is
pressed.
4. If several subfiles using SFLDROP are displayed at one time, the same function key should be
specified on each SFLDROP keyword. If the function keys are different, only the key specified
for the most recently displayed subfile is in effect. Pressing the function key affects the subfile
containing the cursor. If the cursor is not positioned in a subfile, the function key affects the
upper subfile.
5. SFLDROP can be specified on the same subfile-control record format as the SFLFOLD
keyword. If both keywords are active, the SFLFOLD keyword is used. Indicators are checked
at the time the subfile is displayed. Both keywords must use the same key.
Option indicators are valid for this keyword.
Example
The following example shows how to specify the SFLDROP keyword.
|...+....1....+....2....+....3....+....4....+....5....+....6....+....7....+....8
00010A
R SFLR
SFL
A*
A*
(subfile records should not fit on one screen line)
A*
00040A
R SFLCTLR
SFLCTL(SFLR)
00050A
SFLPAG(17)
00060A
SFLSIZ(34)
00070A
SFLDSP SFLDSPCTL
00090A
SFLDROP(CF03)
A
When the subfile is displayed, the workstation user can press the CF03 key to change the subfile from
truncated to folded form and from folded to truncated form.
204
System i: Programming DDS for display files
SFLDSP (Subfile Display) keyword for display files
You use this record-level keyword on the subfile-control record format so that the i5/OS operating system
displays the subfile when your program sends an output operation to the subfile-control record format.
If you do not use an option indicator with this keyword, a page of subfile records is displayed on every
output operation to the subfile-control record format.
This keyword has no parameters.
To determine which page of subfile records is displayed and when the subfile is displayed, see
“SFLRCDNBR (Subfile Record Number) keyword for display files” on page 226.
If your program sends an output operation to the subfile-control record format when the SFLDSP
keyword is in effect and the subfile is not activated (by adding records to it or by using SFLINZ), an
error message is sent to your program.
This keyword is required and is valid only for the subfile-control record format. Display size condition
names are not valid for this keyword.
Option indicators are valid for this keyword.
Example
The following example shows how to specify the SFLDSP keyword.
|...+....1....+....2....+....3....+....4....+....5....+....6....+....7....+....8
00010A
R SFLR
SFL
A*
A*
(at least one displayable field)
A*
00040A
R SFLCTLR
SFLCTL(SFLR)
00050A
SFLPAG(17)
00060A
SFLSIZ(17)
00070A 01
SFLDSP
00080A
SFLDSPCTL
A
The subfile is displayed when option indicator 01 is set on for an output operation to SFLCTLR.
SFLDSPCTL (Subfile Display Control) keyword for display files
You use this record-level keyword on the subfile-control record format so that the i5/OS operating system
displays fields in the subfile-control record format when your program sends an output operation to the
record format.
If you do not use an option indicator with this keyword, the subfile control record is displayed on every
output operation to the subfile-control record format.
This keyword has no parameters.
This optional keyword is valid only for the subfile-control record format. Display size condition names
are not valid for this keyword.
Option indicators are valid for this keyword.
Note: SFLDSPCTL must be in effect when the subfile is displayed for an input operation to the subfile
control record to be valid, even if there are no displayable fields in the subfile-control record
format.
DDS for display files
205
Example
The following example shows how to specify the SFLDSPCTL keyword.
|...+....1....+....2....+....3....+....4....+....5....+....6....+....7....+....8
00010A
R SFLR
SFL
A*
A*
(at least one displayable field)
A*
00040A
R SFLCTLR
SFLCTL(SFLR)
00050A
SFLPAG(17)
00060A
SFLSIZ(17)
00070A 01
SFLDSP
00080A
SFLDSPCTL
A
2 10'NAME'
A
2 34'ADDRESS'
A
Both the subfile and displayable fields in the subfile-control record format are displayed when option
indicator 01 is set on for an output operation to SFLCTLR.
SFLEND (Subfile End) keyword for display files
You use this record-level keyword on the subfile-control record format to enable the display of a plus
sign (+) or text (More or Bottom) in the lower-right display location occupied by the subfile or a scroll
bar.
The plus sign or More text indicates that the workstation user can move the text lines on the subfile to
display more records by pressing the Page Up key.
The format of the keyword is:
SFLEND[(*PLUS | *MORE | {*SCRBAR [*SCRBAR | *PLUS |*MORE ]})]
The scroll bar indicates different types of information about the subfile:
v Where the user is at in the subfile
v How big the subfile is
v What proportion of the subfile the user is viewing
The parameter values *PLUS, *SCRBAR, and *MORE are optional. If no parameter is specified, *PLUS is
used. The second set of *PLUS, *MORE, and *SCRBAR can only be specified if *SCRBAR is specified as
the first parameter. *SCRBAR is the default for the second parameter.
*PLUS tells the system to use the plus sign to indicate that you can use the Page Down key to see more
records.
*MORE tells the system to use the More text to indicate that you can use the Page Down key to see more
records. *MORE also tells the system to use the Bottom text to indicate that the last subfile record is
displayed.
When *MORE is specified, the subfile takes up one more line on the screen (SFLPAG + 1). This line is
needed for the text More and Bottom. If there is not room for the extra line on the display or in a
window, a message is issued at file-creation time and the file is not created.
*SCRBAR tells the system to use a graphical scroll bar for a graphical display. When *SCRBAR is
specified, the last 3 columns of the lines that the subfile is using is reserved for the scroll bar. When
*SCRBAR is used, a second parameter can be specified. The second parameter tells the system what
scrolling indicator should be used for nongraphical displays. *SCRBAR is the default for those displays.
206
System i: Programming DDS for display files
*MORE and *PLUS can be used for the second parameter. When *SCRBAR is used the subfile must
occupy at least 3 lines. SFLFOLD or SFLDROP will work with scroll bars. Both versions of the subfile
(folded or truncated) must occupy three lines.
If the device configuration that is being used supports a pointer device, the scroll bar can also navigate
through the subfile. For more information about how to support different device configurations and how
scroll bars are controlled using the PAGEUP, PAGEDOWN, and SFLSIZ keywords, see the Application
Display Programming book
.
An option indicator must be specified for this keyword.
Paging through your program (SFLPAG equals SFLSIZ)
Your program controls the display of the plus sign or the More or Bottom text through the use of the
indicators on SFLEND. Set the indicators off to display the plus sign or the More text. Set the indicators
on to remove the plus sign from the display or to display the Bottom text. When the Page Up key is
pressed, your program handles the processing. For instance, it reads the subfile, clears it, rewrites the
subfile with new records, and displays it again. If your program does this, the display shows the plus
sign or the More text. If not, the plus sign disappears from the display or the Bottom text appears.
Note: *SCRBAR can be used when SFLPAG equals SFLSIZ. The scroll bar will be displayed with buttons,
a shaft, and a scroll box which covers the entire shaft.
Paging through i5/OS (SFLPAG does not equal SFLSIZ)
The i5/OS operating system displays the plus sign as long as there are more records in the subfile to be
displayed, no matter how the option indicator is set. The scroll bar is displayed with the scroll box placed
at a position on the scroll bar that best represents where the user is in the subfile. When the last page of
the subfile is displayed, the operating system displays the plus sign, the More text, or the scroll bar with
the scroll box one page size above the scroll button if the indicator is off. It does not display the plus
sign, the Bottom text, or the scroll bar with the scroll box on top of the bottom scroll button if the
indicator is on.
Your program must set the indicator on or off when displaying the subfile. (Your program cannot find
out, when the i5/OS operating system is paging through the subfile, which page of the subfile is
displayed.)
If your program sets off the indicator for SFLEND when displaying the subfile, either the plus sign, the
More text, or the scroll bar with the scroll box one page size above, the scroll button is displayed with the
last page of the subfile. Because the plus sign is displayed but the i5/OS operating system cannot page
the subfile any further, your program must provide for any further paging. Specify the PAGEDOWN
keyword on the subfile-control record format so that control is passed to your program when the Page
Down key is pressed again. When your program receives control, it can add more records to the end of
the subfile and use the SFLRCDNBR keyword to display a new page.
Note: If the PAGEDOWN keyword is specified with a scroll bar, then control is passed back to the
program when a PAGEDOWN key is pressed or a manipulation of the graphical scroll bar will
display a partial page.
Position of plus sign with *PLUS option
For the 24 x 80 display size, positions 78 through 80 of the last line occupied by the subfile are used for
the beginning attribute character, plus sign, and ending attribute character. For the 27 x 132 display size,
positions 130 through 132 of the last line occupied by the subfile are used for the beginning attribute
character, plus sign, and ending attribute character.
DDS for display files
207
Note: If an input field occupies the location of the plus sign and the field is changed, the plus sign and
its attribute characters are returned to the program as data in the field. For selection lists, the plus
will be positioned to the right of the choices for the list.
Position of More and Bottom text with *MORE option
For the 24 x 80 display size, positions 67 through 80 of the line immediately following the last line
occupied by the subfile are used for the beginning attribute character, the right-aligned More or Bottom
text, and the ending attribute character. For the 27 x 132 display size, positions 119 through 132 of the
line immediately following the last line occupied by the subfile are used for the beginning attribute
character, the right-aligned More or Bottom text, and the ending attribute character. For selection lists, the
More and Bottom text is positioned to the right of the choices for the list.
Position of the scroll bar with *SCRBAR option
For the 24 x 80 display size, positions 77 through 80 of every line of the subfile will be reserved for the
scroll bar. No fields of the subfile can use those columns. Thus no fields can occupy more than one line
of the subfile. Multiple line subfiles can be used. For the 27 x 132 display size, positions 129 through 132
of every line of the subfile will be reserved for the scroll bar. For selection lists, the scroll bar will be
positioned to the right of the choices for the list. For other subfiles, the scroll bar will be positioned on
column 79.
Example 1
The following example shows how to specify the SFLEND keyword without parameters.
|...+....1....+....2....+....3....+....4....+....5....+....6....+....7....+....8
00010A
R SETSFL1
SFL
00020A 50
SFLNXTCHG
00030A
SETSEL
1Y 0B 6 2VALUES(1 2 9) CHECK(AB)
00040A
SETNAME
10A O 6 4
00050A
R SETCTL1
SFLCTL(SETSFL1)
00060A
SFLSIZ(34)
00070A
SFLPAG(17)
00080A 40
SFLDSP
00090A 41
SFLDSPCTL
00100A 42
SFLDLT
00110A 43
SFLCLR
00120A 49
SFLEND
00130A N49
ROLLUP(26)
00140A
SETRRN
4S 0H
SFLRCDNBR(CURSOR)
A
Paging is provided by the i5/OS operating system and the plus sign (+) appears in the lower right corner
of the display. When the last record is written to the subfile, indicator 49 is set on, which disables the
Page Down key and omits the plus sign from the display.
Example 2
The following example shows how to specify the SFLEND keyword with *MORE as a parameter.
|...+....1....+....2....+....3....+....4....+....5....+....6....+....7....+....8
00010A
R SETSFL2
SFL
00020A 50
SFLNXTCHG
00030A
SETSEL
1Y 0B 6 2VALUES(1 2 9) CHECK(AB)
00040A
SETNAM
10A O 6 4
00050A
R SETCTL2
SFLCTL(SETSFL2)
00060A
SFLSIZ(34)
00070A
SFLPAG(17)
00080A 40
SFLDSP
00090A 41
SFLDSPCTL
00100A 42
SFLDLT
208
System i: Programming DDS for display files
00110A 43
00120A 49
00130A N49
00140A
A
SETRRN
4S 0H
SFLCLR
SFLEND(*MORE)
ROLLUP(26)
SFLRCDNBR(CURSOR)
Paging is provided by the i5/OS operating system. The More text appears at the lower right corner of the
display on the line immediately following the subfile if there are more records to see in the subfile. When
the last record is written to the subfile, indicator 49 is set on, which disables the Page Down key and
causes the Bottom text to appear instead of the More text.
Example 3
The following example shows how to specify the SFLEND keyword with *SCRBAR as a parameter.
|...+....1....+....2....+....3....+....4....+....5....+....6....+....7....+....8
00010A
R SETSFL2
SFL
00020A 50
SFLNXTCHG
00030A
SETSEL
1Y 0B 6 2VALUES(1 2 9) CHECK(AB)
00040A
SETNAM
10A O 6 4
00050A
R SETCTL2
SFLCTL(SETSFL2)
00060A
SFLSIZ(34)
00070A
SFLPAG(17)
00080A 40
SFLDSP
00090A 41
SFLDSPCTL
00100A 42
SFLDLT
00110A 43
SFLCLR
00120A 49
SFLEND(*SCRBAR *MORE)
00130A N49
ROLLUP(26)
00140A
SETRRN
4S 0H
SFLRCDNBR(CURSOR)
A
Paging is provided by the i5/OS operating system. The scroll bar is shown for graphical displays. If a
graphical display is not used, then the More text appears at the lower right corner of the display on the
line immediately following the subfile if there are more records to see in the subfile. When the last record
is written to the subfile, indicator 49 is set on, which disables the Page Down key and causes the Bottom
text to appear instead of the More text. The scroll bar is displayed with the scroll box just above the
bottom scroll button.
Related reference
“SFLROLVAL (Subfile Roll Value) keyword for display files” on page 228
You use this field-level keyword in the subfile-control record format to specify that the workstation
user can type a value in this field. The value tells the i5/OS operating system how many records to
page up or down when the appropriate paging key is pressed.
SFLENTER (Subfile Enter) keyword for display files
You use this record-level keyword on the subfile-control record format to specify that the Enter key is to
be used as a Page Up key. This allows the i5/OS operating system to page through a subfile of more than
one page when the Enter key is pressed.
The format of the keyword is:
SFLENTER(CAnn | CFnn)
This optional keyword is valid only for the subfile-control record format.
If a subfile is not currently displayed or you cannot page through the subfiles displayed (they have one
page or less) after you press the Enter key, control is returned to your program. The parameter value
with this keyword is required. Use it to specify a function key to replace the Enter key while this function
is active. This keyword is normally used when the subfile is entirely entered by the workstation user or
when the user changes some records in the subfile and adds others.
DDS for display files
209
Option indicators are not valid for this keyword.
Note: This keyword is in effect only until the next output operation. At the next output operation, the
specifications for that record apply.
If more than one subfile using SFLENTER is displayed at the same time, the only CA or CF key in effect
as an Enter key is the CA or CF key specified for SFLENTER on the most recently displayed subfile. The
cursor position at the time the Enter key is pressed determines which subfile is affected.
Example
The following example shows how to specify the SFLENTER keyword.
|...+....1....+....2....+....3....+....4....+....5....+....6....+....7....+....8
00010A
R SFLR
SFL
00020A*
00030A*
(at least one displayable field)
00040A
R SFLCTLR
SFLCTL(SFLR)
00050A
SFLPAG(17)
00060A
SFLSIZ(51)
00070A
SFLDSP SFLDSPCTL
00080A
SFLENTER(CF01)
A
The Enter key is used as a Page Up key. To enter data, the workstation user presses CF01.
SFLFOLD (Subfile Fold) keyword for display files
You use this record-level keyword on the subfile-control record format to assign a command attention
(CA) key or a command function (CF) key that the workstation user can press to truncate or fold subfile
records that require more than one display line.
The format of the keyword is:
SFLFOLD(CAnn | CFnn)
When the SFLFOLD keyword is specified, the subfile is first displayed in folded form. When the
workstation user presses the specified key, the i5/OS operating system displays the records again in
truncated form. By pressing the specified key, the form of the displayed subfile changes from one state to
the other. When truncated, subfile records fit on one display line.
Without SFLFOLD, the i5/OS operating system displays the entire subfile record folded where needed
but the workstation user is not given the option to display the subfile record in truncated form.
In the folded form, as many records are displayed as are specified on the SFLPAG keyword. In the
truncated form, more records are displayed than are specified on the SFLPAG keyword.
The i5/OS operating system truncates subfile records in the middle of output-only fields. However, if the
truncation is in the middle of an input-capable field, the whole field is omitted from the display. If this
results in omitting the entire record from the display, an error message is sent to the display and the
record is not truncated. Instead, it is displayed in folded form.
Notes:
1. A warning message (severity 10) is sent at file creation if the entire record fits on a single
display line.
2. If subfile size equals subfile page, an error message (severity 20) is issued and SFLFOLD is
ignored. When several display sizes are used (DSPSIZ keyword specified), SFLFOLD is
ignored only for display sizes for which the subfile size equals subfile page. If the subfile
record format contains field selection, SFLFOLD is not valid.
210
System i: Programming DDS for display files
3. If the subfile contains input-capable fields, it is recommended that you specify a CF key rather
than a CA key. If you specify a CA key in this situation, changed data is lost when the key is
pressed.
4. If several subfiles using SFLFOLD are displayed at one time, the same function key should be
specified on each SFLFOLD keyword. If the function keys are different, only the key specified
for the most recently displayed subfile is in effect. Pressing the function key affects the subfile
containing the cursor. If the cursor is not positioned in a subfile, the function key affects the
upper subfile.
5. SFLFOLD can be specified on the same subfile-control record format as the SFLDROP
keyword. If both keywords are active, SFLFOLD is used. Indicators are checked at the time the
subfile is displayed. Both keywords must use the same key.
Option indicators are valid for this keyword.
Example
The following example shows how to specify the SFLFOLD keyword.
|...+....1....+....2....+....3....+....4....+....5....+....6....+....7....+....8
00010A
R SFLR
SFL
00020A*
00030A*
(subfile records should not fit on one screen line)
00040A
R SFLCTLR
SFLCTL(SFLR)
00050A
SFLPAG(17)
00060A
SFLSIZ(34)
00070A
SFLDSP SFLDSPCTL
00080A
SFLFOLD(CF03)
A
When the subfile is displayed, the workstation user can press the CF03 key to change the subfile from
folded to truncated form and from truncated to folded form.
SFLINZ (Subfile Initialize) keyword for display files
You use this record-level keyword on the subfile-control record format to specify that the i5/OS operating
system is to initialize all records in the subfile on an output operation to the subfile-control record format
identified by the SFLCTL (Subfile Control) keyword.
The fields in each subfile record are initialized to blanks for character type fields, to nulls for
floating-point type fields, to zeros for other numeric type fields, or to the constant value specified on
input-only fields if the DFT keyword is specified.
When the subfile is displayed (on an output operation to the subfile control record), all records in the
subfile are displayed with the same value. Any record previously written is overwritten and no longer
has its earlier value.
This keyword has no parameters.
The following case is true when SFLINZ is in effect on an output operation to the subfile-control record
format. If keywords (such as DSPATR(HI)) are specified on fields in the subfile record format and if
option indicators are specified on those keywords, the subfile is displayed as though all option indicators
are off (hex F0). Note that a keyword can be selected if N is specified for the option indicator.
After your program sends an output operation to the subfile control record with SFLINZ in effect, all
records in the subfile are considered active but not changed. They are considered changed only when the
workstation user changes them or when your program sends an output operation to the subfile record
format with the SFLNXTCHG keyword in effect.
DDS for display files
211
To initialize a subfile with no active records, use the SFLRNA (Subfile Records Not Active) keyword.
In general, use SFLINZ for the following purposes:
v Specify SFLINZ with the SFLRNA keyword so that your program can initialize a subfile, then add
records to that subfile without having the initialized records considered active.
v Specify SFLINZ with the SFLPGMQ keyword so that your program can build a message subfile with a
single output operation.
Notes:
1. If field selection is used in the subfile record format, SFLINZ is not valid. Your program can
only initialize the subfile by a series of output operations to the subfile record format,
selecting fields as needed.
2. SFLINZ cannot be specified on the subfile-control record format for a message subfile
(SFLMSGRCD) unless the SFLPGMQ keyword is also specified at the field level in the same
subfile-control record format.
Option indicators are valid for this keyword. Display size condition names are not valid.
Example
The following example shows how to specify the SFLINZ keyword.
|...+....1....+....2....+....3....+....4....+....5....+....6....+....7....+....8
00010A
R SFLR
SFL
00020A*
00030A*
(at least one displayable field)
00040A
R SFLCTLR
SFLCTL(SFLR)
00050A
SFLPAG(17)
00060A
SFLSIZ(17)
00070A 01
SFLDSP SFLDSPCTL
00080A 02
SFLINZ
00090A
UNLOCK(*ERASE *MDTOFF)
A
Related reference
“SFLRNA (Subfile Records Not Active) keyword for display files” on page 227
You use this record-level keyword with the Subfile Initialize (SFLINZ) keyword on the subfile-control
record format so that your program can initialize a subfile with no active records. To do this, your
program sends an output operation to the subfile-control record format with the SFLINZ keyword
selected.
“SFLPGMQ (Subfile Program Message Queue) keyword for display files” on page 224
You use this field-level keyword on the second (and last) field in the subfile record format for a
message subfile.
“SFLMSGRCD (Subfile Message Record) keyword for display files” on page 220
You use this record-level keyword on the subfile record format to specify that this subfile is to be a
message subfile and that the records displayed when the subfile is displayed are messages from a
program message queue.
SFLLIN (Subfile Line) keyword for display files
You use this record-level keyword on the subfile-control record format to specify that the subfile is to be
displayed as a horizontal subfile. The subfile has more than one column of records displayed.
The format of the keyword is:
SFLLIN(spaces)
The parameter value specifies the number of spaces (including attribute characters) between columns of
records.
212
System i: Programming DDS for display files
For example, specifying the SFLLIN keyword causes a subfile of four records to be displayed as:
REC1
REC2
REC3
REC4
If SFLLIN is not specified, these records appear as:
REC1
REC2
REC3
REC4
If the subfile record format contains field selection, this keyword is not valid.
To use SFLLIN for secondary display sizes, specify a SFLLIN keyword with a display size condition
name for each secondary display size.
Because the SFLPAG keyword specifies the number of subfile records that can be displayed at a single
time, you must consider SFLLIN when specifying the SFLPAG value.
SFLLIN is not valid for a message subfile.
Option indicators are not valid for this keyword.
Example
The following example shows how to specify the SFLLIN keyword. Columns of subfile records appear
five spaces apart.
|...+....1....+....2....+....3....+....4....+....5....+....6....+....7....+....8
00010A
R SFLR
SFL
A*
A*
(at least one displayable field)
A*
00040A
R SFLCTLR
SFLCTL(SFLR)
00050A
SFLPAG(17)
00060A
SFLSIZ(17)
00070A
SFLDSP SFLDSPCTL
00080A
SFLLIN(5)
A
SFLMLTCHC (Subfile Multiple Choice Selection List) keyword for
display files
You use this record-level keyword to define a subfile as a multiple-choice selection list. A multiple-choice
selection list is a scrollable group of items from which the user can select multiple items.
The format of this keyword is:
SFLMLTCHC[(&number-selected] [*NORSTCSR | *RSTCSR]
[*NOSLTIND | *SLTIND])]
Parameters are optional and can be entered in any order.
The &number-selected parameter allows the application to find the number of items that were selected in
the multiple-selection list. This parameter must name a hidden field with a length of 4, data type of Y,
and zero decimal positions.
The *RSTCSR parameter specifies whether the arrow keys should be allowed to move the selection cursor
outside of the selection list. *RSTCSR specifies that the arrow keys will not cause the selection cursor to
DDS for display files
213
move outside of the push button field. *NORSTCSR specifies that the arrow keys will cause the selection
cursor to leave the field. If the SFLMLTCHC subfile control record is defined in a pulldown, the default is
*RSTCSR. Otherwise, the default is *NORSTCSR.
The *SLTIND parameter specifies whether selection indicators are used when this selection list is
displayed on a graphical display. *SLTIND specifies that the check boxes should be used on color
graphical displays as selection indicator. *NOSLTIND specifies that no selection indicator should be used
on a color graphical display and only a selection cursor can be used to make a selection. The default is
*NOSLTIND.
A subfile containing the SFLMLTCHC keyword must:
v Contain only one output field
v Cannot contain input capable fields
v Might contain hidden fields
This optional keyword is valid only for the subfile-control record format.
The following subfile control record keywords cannot be specified on a record with the SFLMLTCHC
keyword:
SFLDROP
SFLFOLD
SFLSNGCHC
The CHCAVAIL, CHCSLT, and CHCUNAVAIL keywords can be used to indicate the color of the items
within the selection list, when the list is displayed on a color display station. The CHCAVAIL keyword
indicates the color of the items within the list which are available for selection. The CHCSLT keyword
indicates the color of the selected items. The CHCUNAVAIL keyword indicates the items on the list
which are not available for selection. These keywords can be used in a subfile control record only if
SFLSNGCHC or SFLMLTCHC keywords are also used.
Option indicators are not valid for this keyword.
Example 1
The following example shows how to specify the SFLMLTCHC keyword:
|...+....1....+....2....+....3....+....4....+....5....+....6....+....7....+....8
A
A
R SFLRCD
SFL
A
CTLFLD
1Y 0H
SFLCHCCTL
A
F1
10A O 6 10
A
R SFLCTLRCD
SFLCTL(SFLRCD)
A
SFLMLTCHC
A
SFLPAG(5) SFLSIZ(&SFLSIZ);
A
SFLDSP SFLDSPCTL
A
ROLLUP(10)
A 10
SFLEND(*SCRBAR)
A
F3
5S 0H
SFLSCROLL
A
F2
4S 0H
SFLRCDNBR(CURSOR *TOP)
A
SFLSIZ
5S 0P
A
1 30'Panel Title'
A
4 5'Select Multiple Items:'
In this example, when using a graphical display station attached to a controller that supports an
enhanced interface for nonprogrammable workstations, a multiple-choice list looks like this:
214
System i: Programming DDS for display files
Example 2
The following example shows how to specify what color the items on the list should have on a color
display. Available items are displayed in red. Selected items are displayed in blue. Unavailable items are
displayed in yellow. The CHCAVAIL, CHCSLT, and CHCUNAVAIL keywords can also be used to set the
display attributes of the items on the list.
|...+....1....+....2....+....3....+....4....+....5....+....6....+....7....+....8
A
A
R SFLRCD
SFL
A
CTLFLD
1Y 0H
SFLCHCCTL
A
F1
10A O 6 10
A
R SFLCTLRCD
SFLCTL(SFLRCD)
A
SFLMLTCHC
A
SFLPAG(5) SFLSIZ(&SFLSIZ);
A
SFLDSP SFLDSPCTL
A
ROLLUP(10)
A
CHCAVAIL((*COLOR RED))
A
CHCSLT((*COLOR BLU))
A
CHCUNAVAIL((*COLOR YLW))
A 10
SFLEND(*SCRBAR)
A
F3
5S 0H
SFLSCROLL
A
F2
4S 0H
SFLRCDNBR(CURSOR *TOP)
A
SFLSIZ
5S 0P
A
1 30'Panel Title'
A
4 5'Select Multiple Items:'
Related reference
“CHCAVAIL (Choice Color/Display Attribute when Available) keyword for display files” on page 46
You use this field-level keyword to specify the color or display attributes to be used when the system
is displaying the available choices in a menu bar, push button, selection field, or subfile single-choice
or multiple-choice selection list.
“CHCSLT (Choice Color/Display Attribute when Selected) keyword for display files” on page 50
You use this field-level keyword to specify the color or display attributes to be used when the system
is displaying a selected choice in a menu bar or selection field.
“CHCUNAVAIL (Choice Color/Display Attribute when Unavailable) keyword for display files” on
page 52
You use this field-level keyword to specify the color or display attributes to be used when the system
displays the unavailable choices in a selection field or a push button field.
SFLMODE (Subfile Mode) keyword for display files
You use this record-level keyword on the subfile-control record format to return an indication of whether
the subfile was in folded or truncated mode on input. You use this keyword with the SFLCSRRRN
(Subfile Cursor Relative Record Number) keyword to determine the location of the cursor within a
subfile.
DDS for display files
215
The format of the keyword is:
SFLMODE(&mode);
The mode parameter is required. It specifies the name of a hidden field that, on input, will contain the
subfile mode. The field must be defined in the subfile-control record format as a character (A in position
35) field of length 1 with usage H (hidden). The field will contain the value 0 if the subfile is in folded
mode; it will contain the value 1 if the subfile is in truncated mode.
If a SFLDROP or SFLFOLD keyword is not specified on the subfile control record, the mode value
returned is 0.
Option indicators are not valid for this keyword.
Example
The following example shows how to specify the SFLMODE and SFLCSRRRN keywords.
|...+....1....+....2....+....3....+....4....+....5....+....6....+....7....+....8
A
R SFL01
SFL
A
FLD2A
2A I 3 2
A
FLD2B
30A O 3 5
A
FLD2C
6A O 4 18
A
R CTL01
SFLCTL(SFL01)
A
SFLSIZ(25)
A
SFLPAG(4)
A
SFLDSP
A
SFLEND
A
SFLCSRRRN(&RELRCD);
A
SFLMODE(&MODE);
A 10
SFLDROP(CF03)
A 11
SFLFOLD(CF03)
A
RTNCSRLOC(&CSRRCD &CSRFLD);
A
RELRCD
5S 0H
A
MODE
1A H
A
CSRFLD
10A H
A
CSRRCD
10A H
A
A
R SFL02
SFL
A
FLD2A
2A I 13 2
A
FLD2B
30A O 13 5
A
FLD2C
6A O 14 18
A
R CTL02
SFLCTL(SFL02)
A
SFLSIZ(25)
A
SFLPAG(4)
A
SFLDSP
A
SFLEND
A
SFLCSRRRN(&RELRCD);
A
SFLMODE(&MODE);
A 12
SFLDROP(CF03)
A 13
SFLFOLD(CF03)
A
RTNCSRLOC(&CSRRCD &CSRFLD);
A
RELRCD
5S 0H
A
MODE
1A H
A
CSRFLD
10A H
A
CSRRCD
10A H
A
Indicators 10 and 13 are on. Two records were added to both subfiles. Both subfiles are displayed.
216
System i: Programming DDS for display files
The following table shows the values returned for CTL02 when the cursor is at the specified positions.
Row
Column
RELRCD
MODE
CSRRCD
CSRFLD
13
14
15
15
17
24
3
2
18
2
62
2
2
2
1
1
2
1
0
0
0
0
0
0
0
0
0
0
SFL02
SFL02
SFL02
SFL02
SFL02
blanks
SFL01
FLD2A
FLD2C
FLD2A
blanks
blanks
blanks
FLD2A
The following table shows the values returned for CTL01 when the cursor is at the specified positions.
Row
Column
RELRCD
MODE
CSRRCD
CSRFLD
3
4
5
13
2
18
18
2
1
2
0
0
1
1
1
1
SFL01
SFL01
SFL01
SFL02
FLD2A
FLD2B
blanks
FLD2A
SFLMSG (Subfile Message) and SFLMSGID (Subfile Message Identifier)
keywords for display files
You use these record-level keywords on the subfile-control record format to identify a message to be
displayed on the message line when your program performs an output operation to the subfile-control
record format.
Your program has the responsibility to reverse the images of any fields and to position the cursor
appropriately in the subfile being displayed.
The formats of the keywords are:
SFLMSG('message-text' [response-indicator])
SFLMSGID(msgid [library-name/]msg-file [response-indicator] [&msg-data])
SFLMSG keyword
Specify SFLMSG as you do the ERRMSG keyword. The parameters specify a message text and, optionally,
a response indicator. The message text is the message to be displayed.
If you specify a response indicator, it should be the same as the option indicator used to condition
SFLMSG. On the input operation that follows the display of the error message, the i5/OS operating
system turns off the indicator. If the response and option indicators are the same, they are both turned
off. One exception to this rule is that if the response indicator is also specified for another keyword, such
as CHANGE, CAnn, or CFnn, the on/off setting of the response indicator is based on the results of the
function provided by the CHANGE or CFnn keyword.
When a response indicator is specified, the first 50 characters of the message text are also used as
indicator text. Separate response indicator text is not valid for SFLMSG.
SFLMSGID keyword
Specify SFLMSGID as you do the ERRMSGID keyword.
For SFLMSGID, the parameters specify:
v The message identifier for the message to be displayed
DDS for display files
217
v The message file and, optionally, the library
v A response indicator
v A msg-data field name
The response indicator, if specified, should be the same as the option indicator used to condition the
SFLMSGID keyword. On the subsequent input operation, after the display of the error message, the
i5/OS operating system turns off the indicator. However, if the response indicator is also specified on
another keyword, such as CHANGE, CAnn, or CFnn, the on/off setting of the response indicator is based
on the results of the function provided by the CHANGE, CAnn, or CFnn keyword.
Note: Indicator text cannot be specified on the SFLMSGID keyword.
The msg-data field, if specified, contains the replacement text for the specified message. The field must
exist in the record format, and the field must be defined as a character field (data type A) with usage P.
For more information about how replacement text works, see the Send Program Message (SNDPGMMSG)
command.
Conditions occurring during message display
The display of messages using SFLMSG and SFLMSGID is similar to the display of messages by the
i5/OS operating system when field validation errors are detected. An important difference from ERRMSG
and ERRMSGID is that the program, and not the i5/OS operating system, must position the cursor to the
appropriate field within the subfile, reverse the image of that field within the subfile, and also optionally
reverse the image of more than one field at a time. On the 5250 workstation, blinking cursor and message
highlighting are allowed.
Note: The SFLDSP keyword must be in effect for SFLMSG and SFLMSGID to be processed.
Restoration of reversed image fields
See the Restoration of reversed image fields section in “ERRMSG (Error Message) and ERRMSGID (Error
Message Identifier) keywords for display files” on page 115.
Priority among selected keywords
You can specify either SFLMSG or SFLMSGID several times for a single subfile-control record format. In
your program, set option indicators to select a particular message to be displayed and to select particular
fields to be displayed in reverse image. Several fields can be displayed in reverse image in different
records of a subfile when the subfile is displayed again. However, only one message can be displayed at
one time.
If more than one error message is selected at a time, the i5/OS operating system displays the first of the
following keywords:
1. ERRMSG (If more than one ERRMSG keyword is selected, the first one selected is displayed.)
2.
3.
4.
5.
ERRMSGID (If more than one ERRMSGID keyword is selected, the first one selected is displayed.)
SFLMSG (If more than one SFLMSG keyword is selected, the first one selected is displayed.)
SFLMSGID (If more than one SFLMSGID keyword is selected, the first one selected is displayed.)
Message fields (M in position 38) (If more than one message field is selected, the first one selected is
displayed.)
Multiple subfile messages (SFLMSG and SFLMSGID) are allowed on error subfiles.
Option indicators are valid for these keywords.
218
System i: Programming DDS for display files
Example
The following example shows how to specify the SFLMSG and SFLMSGID keywords.
|...+....1....+....2....+....3....+....4....+....5....+....6....+....7....+....8
00010A
R SFLR
SFL
00020A*
00030A*
(at least one displayable field)
00040A*
00050A
R SFLCTLR
SFLCTL(SFLR)
00060A
SFLPAG(17)
00070A
SFLSIZ(17)
00080A
SFLDSP SFLDSPCTL
00090A 11
SFLMSGID(USR0006 PAYROLL/UMSGF1 +
00100A
11 &RPLTXT);
00110A 12
SFLMSGID(USR0007 PAYROLL/UMSGEF1 +
00120A
12 &RPLTXT);
00130A
RPLTXT
78A P
A
SFLMSGKEY (Subfile Message Key) keyword for display files
You use this field-level keyword on the first field in the subfile record format for a message subfile (with
Subfile (SFL) and Subfile Message Record (SFLMSGRCD) keywords specified).
The SFLMSGKEY keyword is not valid on the subfile-control record format (SFLCTL). To select messages
from a program message queue for display, your program places a message reference key in this field.
Your program also places the name of the program message queue in the second field in the subfile
record format.
This keyword has no parameters.
This field is predefined as a four-position, character data type, hidden field. The following rules apply:
v This field must always be the first field defined in the subfile record format.
v The field name and SFLMSGKEY are the only DDS you can specify for this field.
Option indicators are not valid for this keyword or with the associated field.
For more information about building and displaying message subfiles, see SFLPGMQ (Subfile Program
Message Queue) keyword for display files.
Example
The following example shows how to specify the SFLMSGKEY keyword.
|...+....1....+....2....+....3....+....4....+....5....+....6....+....7....+....8
00010A
R RCDMSG
SFL SFLMSGRCD(3)
00020A
FLDKEY
SFLMSGKEY
00030A
FLDPGM
SFLPGMQ
00040A
R SFLCTL
SFLCTL(RCDMSG)
00050A 01
SFLINZ
00060A
SFLPAG(17)
00070A
SFLSIZ(17)
00080A
SFLDSP SFLDSPCTL
00090A
FLDPGM
SFLPGMQ
A
Related reference
“SFLCTL (Subfile Control) keyword for display files” on page 201
You use this record-level keyword to specify that this record format is to be a subfile-control record
format. This record format must immediately follow the subfile record format.
DDS for display files
219
“SFLPGMQ (Subfile Program Message Queue) keyword for display files” on page 224
You use this field-level keyword on the second (and last) field in the subfile record format for a
message subfile.
SFLMSGRCD (Subfile Message Record) keyword for display files
You use this record-level keyword on the subfile record format to specify that this subfile is to be a
message subfile and that the records displayed when the subfile is displayed are messages from a
program message queue.
The format of the keyword is:
SFLMSGRCD(line-number)
The parameter value specified with SFLMSGRCD specifies the first line on the display on which
messages are displayed. The value specified must not be greater than the maximum line number for the
display size being used. The number of messages displayed depends on the SFLPAG value specified for
the subfile.
For more information about building and displaying message subfiles, see “SFLPGMQ (Subfile Program
Message Queue) keyword for display files” on page 224.
The TEXT keyword is valid at the record-level for SFLMSGRCD.
There can be only two predefined fields specified on the subfile record format for a message subfile as
follows:
v Message identifier. A 4-position, character data type, hidden field. Your program uses this field to pass
a message identifier to the i5/OS operating system. This field must always be the first field defined in
the message subfile. You must specify the SFLMSGKEY keyword with this field.
v Program queue name. A 10-position, character data type, hidden field. Your program passes the name
of the program message queue that contains the messages in this field. It must be the second field of a
subfile message record and must immediately follow the first field. If specified also on the subfile
control record, it can be anywhere within the record specification. You must specify SFLPGMQ with
this field.
Display size condition names can be specified for SFLMSGRCD and are required if the line number for
the first message displayed is to change, based on display size.
Data is not returned in your input buffer if your program does an input operation for a message subfile.
The messages are displayed as follows:
v Each message is displayed on a separate line and is truncated if it is longer than the display line
length.
v Each message starts in position 2. The maximum message length for the 24 x 80 display size is 76
characters. The maximum message length for the 27 x 132 display size is 128 characters.
v Each message is displayed with the high intensity (HI) field attribute.
When a message subfile is paged through the i5/OS operating system, the cursor is positioned at the
same location as it was when the Page key was pressed.
Message help is supported for these messages. The workstation user chooses which message help is to be
displayed by placing the cursor on the line containing the message and pressing the Help key.
Notes:
1. When SFLMSGRCD is specified, you cannot specify the SFLINZ keyword without specifying
SFLPGMQ.
220
System i: Programming DDS for display files
2. The message subfile, starting on the line specified on SFLMSGRCD, must not overlap any
displayable fields in the subfile control record, even if option indicators are specified on the
displayable fields.
Option indicators are not valid for this keyword; display size condition names are valid.
Example
The following example shows how to specify the SFLMSGRCD keyword.
|...+....1....+....2....+....3....+....4....+....5....+....6....+....7....+....8
00030A
R RCDMSG
SFL SFLMSGRCD(3)
00040A
FLDKEY
SFLMSGKEY
00050A
FLDPGM
SFLPGMQ
00060A
R SFLCTL
SFLCTL(RCDMSG)
00070A
SFLPAG(17)
00080A
SFLSIZ(17)
00090A
SFLDSP SFLDSPCTL
A
The highlighted keywords are required on the subfile record format for a message subfile. The
SFLMSGKEY and SFLPGMQ keywords must be specified in the order shown.
Related reference
“SFL (Subfile) keyword for display files” on page 197
You use this record-level keyword to specify that this record format is to be a subfile record format.
“SFLCTL (Subfile Control) keyword for display files” on page 201
You use this record-level keyword to specify that this record format is to be a subfile-control record
format. This record format must immediately follow the subfile record format.
“SFLINZ (Subfile Initialize) keyword for display files” on page 211
You use this record-level keyword on the subfile-control record format to specify that the i5/OS
operating system is to initialize all records in the subfile on an output operation to the subfile-control
record format identified by the SFLCTL (Subfile Control) keyword.
SFLNXTCHG (Subfile Next Changed) keyword for display files
You use this record-level keyword on the subfile record format to force the workstation user to correct
program-detected typing errors in subfile records that have been read by the program.
The program does this by causing a record to be changed so that a get-next-changed operation must read
the record as described in the following section.
This keyword has no parameters.
Subfile operations with SFLNXTCHG
A typical use of SFLNXTCHG can be as follows:
A workstation user changes some records in a displayed subfile (this can be for a data-entry application
or a data-update application). After changing some records, the workstation user presses the Enter key,
and the program reads only the changed records with get-next-changed operations. (For example,
READC in RPG III and READ-SUBFILE-NEXT-MODIFIED in COBOL.)
If the program detects typing errors in the changed records, it can send update operations (UPDATE in
RPG IV, REWRITE SUBFILE in COBOL) to the subfile records in error, setting indicators so that
SFLNXTCHG is in effect during the update operations. These update operations are sent to the subfile
record format.
DDS for display files
221
After all the records in error have been updated, the program sends an input/output operation to the
subfile-control record format to display the subfile again.
With the subfile displayed again, the workstation user types the data again and presses the Enter key. If
the data is correct, the program does not display the subfile again.
The records in error (and any other records changed by the workstation user) are returned to the
program on the next get-next-changed operation. This is because SFLNXTCHG caused the subfile records
to be considered changed even though the workstation user did not change them. This allows the
program to prohibit the workstation user from ignoring program-detected typing errors in subfile records.
Subfile operations without SFLNXTCHG
If SFLNXTCHG is not specified, or is specified but not selected on the update operations to the subfile
records, then the workstation user can press the Enter key instead of correcting the program-detected
errors. The program then reads no records because the get-next-changed operations find no changed
records the second time the Enter key is pressed.
Option indicators are valid for this keyword.
You cannot specify SFLNXTCHG with the SFLMSGRCD keyword.
Example
The following example shows how to specify the SFLNXTCHG keyword.
|...+....1....+....2....+....3....+....4....+....5....+....6....+....7....+....8
00010A
R SFLR
SFL
00020A 14
SFLNXTCHG
A*
A*
(at least one input-capable field should be specified)
A*
00040A
R SFLCTLR
SFLCTL(SFLR)
00050A
SFLPAG(17)
00060A
SFLSIZ(17)
00070A
SFLDSP SFLDSPCTL
A
SFLPAG (Subfile Page) keyword for display files
You use this record-level keyword on the subfile-control record format to specify the number of records
in the subfile to be displayed at the same time.
For an exception to this rule, see Field selection.
The format of the keyword is:
SFLPAG(number-of-records-to-be-displayed)
The SFLPAG parameter value and the number of lines required by each subfile record determine the
number of actual lines required to display the page of records. Not all records within a subfile must be
displayed at the same time, and not all lines of the display are required to display a page of subfile
records.
This keyword is required for the subfile-control record format.
Subfile page equals subfile size
When you specify the same parameter values for SFLPAG and SFLSIZ, the maximum number of records
that can be contained in the subfile equals the maximum number of subfile records that can appear on
222
System i: Programming DDS for display files
the display at one time. For this condition, the i5/OS program does not automatically page through the
subfile when the Page Up or the Page Down key is pressed. If the ROLLUP and ROLLDOWN keywords
are specified and one of the Page keys is pressed, the i5/OS operating system returns control to your
program instead. If ROLLUP and ROLLDOWN are not specified, a message is sent to the workstation
user, indicating that a key is not supported on the display.
If subfile size equals subfile page, the following keywords are not allowed:
SFLDROP
SFLFOLD
SFLROLVAL
When several display sizes are used (DSPSIZ keyword specified), these keywords are ignored only for
display sizes for which subfile size equals subfile page.
Field selection
When subfile page equals subfile size, you can specify option indicators for fields in the subfile record
format. This is called field selection. When field selection is used in the subfile record, SFLPAG(value)
specifies the number of display lines available to display the records of this subfile. (Without field
selection, SFLPAG(value) specifies the number of subfile records that can be displayed at one time.) This
specification must be considered when a subfile record occupies more than one display line. The value of
SFLPAG must be greater than or equal to the number of display lines occupied by the subfile.
If the subfile record format contains field selection, the following keywords are not valid on the
subfile-control record format:
SFLDROP
SFLFOLD
SFLINZ
SFLLIN
SFLRCDNBR
SFLRNA (because SFLINZ is not valid)
SFLROLVAL
Subfile page does not equal subfile size
When you specify different parameter values for SFLPAG and SFLSIZ, the i5/OS operating system
recognizes the Page Up and Page Down keys and automatically pages through the subfile according to
the value specified in the field for which the SFLROLVAL keyword is specified. If you do not specify the
SFLROLVAL keyword, the i5/OS program pages through the subfile by the parameter value specified for
the SFLPAG keyword except for subfiles using SFLDROP. If you use the SFLDROP keyword, more
records are displayed than the SFLPAG value when records are displayed in the truncated format. For
truncated records, the i5/OS operating system pages through the display by the number of records
displayed in the truncated format.
Option indicators are not valid for this keyword. Display size condition names are valid. Display size
condition names are required if you want the number of records that can be displayed at one time to
change, based on the size of the display.
Example
The following example shows how to specify the SFLPAG keyword.
|...+....1....+....2....+....3....+....4....+....5....+....6....+....7....+....8
00010A
R SFLR
SFL
A*
DDS for display files
223
A*
A*
00040A
00050A
00060A
00070A
A
(at least one displayable field)
R SFLCTLR
SFLCTL(SFLR)
SFLPAG(17)
SFLSIZ(17)
SFLDSP SFLDSPCTL
Because the value specified for the SFLPAG keyword equals the value specified for SFLSIZ(17), subfile
page equals subfile size.
Related reference
“SFL (Subfile) keyword for display files” on page 197
You use this record-level keyword to specify that this record format is to be a subfile record format.
SFLPGMQ (Subfile Program Message Queue) keyword for display files
You use this field-level keyword on the second (and last) field in the subfile record format for a message
subfile.
This field contains the name of the program message queue used by the i5/OS operating system to build
a message subfile. In addition, SFLPGMQ can be specified on the subfile-control record format when the
SFLINZ keyword is specified on the subfile-control record format.
The format of the keyword is:
SFLPGMQ([10] | [276])
When 10 is specified, SFLPGMQ generates a 10-byte field. 10 is the default.
When 276 is specified, SFLPGMQ generates a 276-byte field.
This field is predefined as a character data type, hidden field. The following rules apply:
v The field name and the SFLPGMQ keyword and parameters are the only DDS you can specify for this
field.
v If the name of the program message queue placed in this field at processing time is less than the field
length (10 or 276 bytes), it must be left-aligned and padded with blanks.
For Integrated Language Environment® (ILE) programs using the 276-byte parameter value, the format of
the field data must be as follows:
v The first 256 bytes contains the ILE call message queue name. The call message queue name is the
same as the ILE procedure name. The name must be left-aligned and padded with blanks.
v Bytes 257 through 266 will optionally contain the ILE module name. The name, when specified, must
be left-aligned and padded with blanks. If no module name is provided, these bytes must be set to
blanks.
v Bytes 267 through 276 will optionally contain the name of the ILE bound program name. The name,
when specified, must be left-aligned and padded with blanks. If no bound program name is provided,
these bytes must be set to blanks.
Notes:
1. If a parameter value of 10 is used on SFLPGMQ and an ILE procedure name longer than 10
bytes is placed into this field at processing time, the procedure name is truncated to 10
bytes. The results will be unpredictable.
2. If a parameter value of 276 is used on SFLPGMQ and a program message queue name is
placed into this field at processing time, bytes 257 through 276 must be set to blanks. If
these bytes are not blank, the system assumes that a call message queue name has been
given and will not find the specified program message queue.
224
System i: Programming DDS for display files
v If the SFLPGMQ keyword is specified on both the subfile and subfile control record, the SFLPGMQ
parameter values must match. However, different subfiles within the same file can use different
SFLPGMQ parameter values.
This field is required on the subfile record format (identified by the SFL keyword) to build the subfile one
message at a time through multiple output operations to the subfile record format.
You can also specify this field on the subfile-control record format (identified by the SFLCTL keyword) to
build the subfile all at once through a single output operation to the subfile control record. Specify option
indicators with the SFLINZ keyword to control the way the subfile is built.
Multiple output operation
If you specify the field name and SFLPGMQ on the subfile record, you build the subfile one message at a
time with separate output operations to the subfile record format. For each output operation, the message
reference key must be in the first field of the record (SFLMSGKEY keyword), and the name of the
program message queue must be in the second field. At the time of the output operation, the i5/OS
program retrieves the identified message from the queue and places it in the subfile as a record.
Note: A CL program cannot be used for a multiple output operation. The relative record number
required each time a message is built is not supported for CL.
Single output operation
If you specify SFLPGMQ (with its named field) and the SFLINZ keyword on the subfile-control record
format, you build the entire subfile with one output operation directed to the subfile-control record
format. On the output operation, the i5/OS operating system initializes the subfile with all messages that
are on the program message queue whose name is in the SFLPGMQ field. If necessary, the i5/OS
operating system extends the subfile to contain all messages on the queue. For this function, the
SFLMSGRCD, SFLMSGKEY, and SFLPGMQ keywords must be specified with the subfile record format
(SFL keyword). The SFLPGMQ and SFLMSGKEY keywords are ignored for this function and your
program need not set the values of their fields.
Special value
The SFLPGMQ field can contain a special value, * (asterisk), instead of a program message queue name.
If the program moves an asterisk to the SFLPGMQ field, the i5/OS operating system uses the message
queue of the program issuing the output operation. You cannot use an asterisk if your program is a CL
program.
Both multiple and single output operations
If you specify SFLPGMQ with both the subfile record format and subfile-control record format, you can
use the single operation function one time and the multiple operation function some other time. Do this
by setting indicators before issuing the output operation; however, all operations to a particular subfile
must be consistent (multiple or single, but not intermixed) when preparing for a single display of the
subfile.
Option indicators and display size condition names are not valid for this keyword.
Example
The following example shows how to specify the SFLPGMQ keyword.
|...+....1....+....2....+....3....+....4....+....5....+....6....+....7....+....8
00010A
R RCDMSGILE
SFL SFLMSGRCD(3)
00020A
FLDKEY
SFLMSGKEY
DDS for display files
225
00030A
00040A
00050A
00060A
00070A
00080A
A
A
00110A
A
A
A
A
A
A
A
A
A
A
A
A
FLDPGM
R SFLCTLILE
01
:
:
FLDPGM
R RCDMSGOPM
FLDKEY
FLDPGM
R SFLCTLOPM
02
:
:
FLDPGM
SFLPGMQ(276)
SFLCTL(RCDMSG)
SFLINZ
SFLPAG(17)
SFLSIZ(17)
SFLDSP SFLDSPCTL
SFLPGMQ(276)
SFL SFLMSGRCD(3)
SFLMSGKEY
SFLPGMQ
SFLCTL(RCDMSG)
SFLINZ
SFLPAG(17)
SFLSIZ(17)
SFLDSP SFLDSPCTL
SFLPGMQ(10)
In this example, the program can build the subfile with more than one output operation (indicator 01 off)
or a single output operation (indicator 01 on) to the subfile-control record format.
In the first record, the name of the subfile program queue can be as long as 276 bytes, while the name of
the subfile program queue in the third record format can only be 10 bytes long.
Related reference
“SFLCTL (Subfile Control) keyword for display files” on page 201
You use this record-level keyword to specify that this record format is to be a subfile-control record
format. This record format must immediately follow the subfile record format.
“SFLINZ (Subfile Initialize) keyword for display files” on page 211
You use this record-level keyword on the subfile-control record format to specify that the i5/OS
operating system is to initialize all records in the subfile on an output operation to the subfile-control
record format identified by the SFLCTL (Subfile Control) keyword.
“SFLMSGKEY (Subfile Message Key) keyword for display files” on page 219
You use this field-level keyword on the first field in the subfile record format for a message subfile
(with Subfile (SFL) and Subfile Message Record (SFLMSGRCD) keywords specified).
SFLRCDNBR (Subfile Record Number) keyword for display files
You use this field-level keyword on the subfile-control record format to specify that the page of the
subfile to be displayed is the page that contains the record whose relative record number is in this field.
If you do not specify this keyword, the i5/OS operating system displays the first page of the subfile by
default.
The format of the keyword is:
SFLRCDNBR[([CURSOR] [*TOP])]
If CURSOR is specified, the cursor is placed in the subfile record whose relative record number is
identified by the contents of this field. The cursor is positioned at the first input-capable field in the
subfile record. If there is no input-capable field, the cursor is positioned at the first output-only or
constant field. For example, if a page can contain three records, and nine records are contained in the
subfile, a SFLRCDNBR field value of 8 causes records 7, 8, and 9 to be displayed. If CURSOR is specified,
the cursor appears in record 8.
If *TOP is specified, the subfile record whose relative record number is identified by the contents of this
field will display as the first record of the page of the subfile records being displayed.
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System i: Programming DDS for display files
This field must be a zoned decimal field with zero decimal positions. It must have the keyboard shift
attribute of signed numeric (S in position 35), and it can be up to 4 digits in length. It must be defined as
an output-only, an input/output, or a hidden field. If a value less than 1 or a value greater than the
number of records in the subfile is contained in this field on an output operation to the subfile-control
record format, an error is returned to your program.
This optional keyword is valid only for the subfile-control record format.
You cannot specify both SFLRCDNBR and SFLROLVAL for the same field.
If the subfile record format contains field selection, this keyword is not allowed.
Option indicators are not valid for this keyword.
Example
The following example shows how to specify the SFLRCDNBR keyword.
|...+....1....+....2....+....3....+....4....+....5....+....6....+....7....+....8
00010A
R SFLR
SFL
A*
A*
(at least one displayable field)
A*
00040A
R SFLCTLR
SFLCTL(SFLR)
00050A
SFLPAG(17)
00060A
SFLSIZ(17)
00070A
SFLDSP SFLDSPCTL
00080A
DSPREC
4S 0B 4 12SFLRCDNBR(CURSOR)
A
In this example, either the program or the workstation user can set the value of the field before
displaying the subfile.
Related reference
“ALWROL (Allow Roll) keyword for display files” on page 35
This record-level keyword enables your program to page through data in a window on the display
when the system is displaying the record format you are defining.
SFLRNA (Subfile Records Not Active) keyword for display files
You use this record-level keyword with the Subfile Initialize (SFLINZ) keyword on the subfile-control
record format so that your program can initialize a subfile with no active records. To do this, your
program sends an output operation to the subfile-control record format with the SFLINZ keyword
selected.
The subfile itself becomes active. Subfile records are not considered active unless one of the following
conditions occurs:
v Your program sends an output operation to the subfile record format, placing data in one of the subfile
records. The subfile record becomes active but is not considered changed unless the SFLNXTCHG
keyword is also in effect.
v After your program displays the subfile, the workstation user types data into subfile records. The
records typed in become active and changed.
This keyword has no parameters.
SFLRNA is normally used so that a program can write some records to the subfile before displaying it,
and the workstation user can then add records to the subfile.
DDS for display files
227
When your program displays a subfile initialized with the SFLINZ and SFLRNA keywords in effect,
fields in inactive records have the following values:
v Character fields are blank.
v Numeric fields are zero-filled.
v An input-only field with a constant value specified has the constant value.
Your program cannot send an input operation to an inactive subfile record. Issuing a get-next-changed
operation to one of the subfile records returns the record only when the record has become active and
has been changed.
Your program cannot send output operations to active records (SFLRNA not specified). It must send
update operations. Also, your program cannot send update operations to inactive records (SFLRNA
specified). It must send output operations.
The SFLINZ keyword is required when SFLRNA is specified.
SFLRNA cannot be specified for a message subfile (identified by the SFLMSGRCD keyword on the
subfile record format).
If the subfile record format contains field selection, SFLRNA is not valid.
Option indicators are not valid for this keyword.
Example
The following example shows how to specify the SFLRNA keyword.
|...+....1....+....2....+....3....+....4....+....5....+....6....+....7....+....8
00010A
R SFLR
SFL
A*
A*
(at least one displayable field)
A*
00040A
R SFLCTLR
SFLCTL(SFLR)
00050A
SFLPAG(17)
00060A
SFLSIZ(17)
00070A
SFLDSP SFLDSPCTL
00080A
SFLINZ
00090A
SFLRNA
A
Related reference
“SFLINZ (Subfile Initialize) keyword for display files” on page 211
You use this record-level keyword on the subfile-control record format to specify that the i5/OS
operating system is to initialize all records in the subfile on an output operation to the subfile-control
record format identified by the SFLCTL (Subfile Control) keyword.
SFLROLVAL (Subfile Roll Value) keyword for display files
You use this field-level keyword in the subfile-control record format to specify that the workstation user
can type a value in this field. The value tells the i5/OS operating system how many records to page up
or down when the appropriate paging key is pressed.
This field must have the keyboard shift attribute of signed numeric with zero decimal positions. It can be
up to 4 digits in length, and it must be defined as an input/output or input-only field.
This keyword has no parameters.
The workstation user can page through the data being displayed up or down by first typing in the
number of records to page through and then pressing the Page Up or the Page Down key. (On
228
System i: Programming DDS for display files
subsequent pages, the SFLROLVAL value stays the same unless a new number is typed in before paging.)
If a negative number or zero is typed into this field and a Page key is pressed, an error message is
displayed at the workstation.
This keyword is valid only for the subfile-control record format. You must specify it if the i5/OS
operating system is to support the page-by-record function.
If this keyword is not specified, the i5/OS operating system pages through the display by the SFLPAG
value except for subfiles using the SFLDROP keyword. If using the SFLDROP keyword, more records are
displayed than the SFLPAG value when records are displayed in the truncated format. For truncated
records, the i5/OS operating system pages through the display by the number of records displayed in the
truncated format.
If subfile size equals subfile page, SFLROLVAL is ignored. When several display sizes are used (DSPSIZ
keyword specified), SFLROLVAL is ignored only for display sizes for which subfile size equals subfile
page. If the subfile record format contains field selection, SFLROLVAL is not valid.
This field is returned to your program as part of the input for this subfile control record.
If pressing the Page Up key pages beyond the first page of records of the subfile, one of the following
conditions occurs:
v If the first page of records is not currently displayed, paging up will display it.
v If the first page of records is currently displayed, paging up will cause a message to be displayed.
If pressing the Page Down key pages beyond the last active record of the subfile, one of the following
conditions occurs:
v If the last full page of records is not already displayed, typing Page Down will display it.
v If the last full page of records is already displayed, typing Page Down will cause a message to be
displayed. One exception to this rule is that when the SFLROLVAL value is less than the SFLPAG
value, the i5/OS operating system pages through the subfile again and no message is displayed.
Certain keywords are helpful when specified with SFLROLVAL:
v The SFLEND keyword notifies the workstation user when the last subfile record is displayed.
v The PAGEUP or PAGEDOWN keywords cause control to return to the program when pressing a Page
Up or a Page Down key can page beyond the end of the subfile. Without PAGEUP(ROLLDOWN) or
PAGEDOWN(ROLLUP), a message is displayed (as described previously).
Note: The ROLLUP keyword is the same as the PAGEDOWN keyword and the ROLLDOWN keyword is
the same as the PAGEUP keyword.
The following examples illustrate the use of SFLROLVAL:
v Paging Up. Assume that the value specified for SFLPAG is 3, and there are 11 active records in the
subfile. If records 8 through 10 are currently being displayed, and the user types a page value greater
than 7, pressing the Page Up key displays records 1 through 3.
If records 1 through 3 are currently displayed, and a Page Up key is entered with a SFLROLVAL value
greater than 0, either a message is sent to the workstation user (PAGEUP not specified) or control is
returned to the user program (PAGEUP specified; the program has responsibility for paging down).
v Paging Down. Assume that the value specified for SFLPAG is 3, and there are 11 active records in the
subfile. If records 8 through 10 are currently being displayed, and the user enters a 3 into the
SFLROLVAL field, pressing the Page Down key displays record 11 in the uppermost page area of the
display. Any lines not occupied by that record are blank. If the Page Down key is pressed again, the
last full page of subfile records (records 9 through 11) are displayed. Finally, if the Page Down key is
DDS for display files
229
pressed a third time, either a message is sent to the workstation user (PAGEDOWN not specified) or
control is returned to the user program (PAGEDOWN specified; the program has responsibility for
paging down).
The following shows the conditions that occur when paging beyond the ends of the subfile (when the
SFLROLVAL value is greater than the SFLPAG value).
v On pressing the Page Down key:
– If the last full page of records is not already displayed, then it is displayed.
– If the last full page of records is already displayed, then a message is displayed.
v On pressing the Page Down key a second time:
– If PAGEDOWN is specified, control returns to your program.
– If PAGEDOWN is not specified, a message is displayed.
v On pressing the Page Up key:
– If the first page of the subfile is not already displayed, then it is displayed.
– If the first page of the subfile is already displayed, then:
- If PAGEUP is specified, control returns to your program.
- If PAGEUP is not specified, a message is displayed.
You cannot specify both the SFLROLVAL and the SFLRCDNBR keywords for the same field.
Option indicators are not valid for this keyword.
Example
The following example shows how to specify the SFLROLVAL keyword.
|...+....1....+....2....+....3....+....4....+....5....+....6....+....7....+....8
00010A
R SFLR
SFL
A*
A*
(at least one displayable field)
A*
00040A
R SFLCTLR
SFLCTL(SFLR)
00050A
SFLPAG(17)
00060A
SFLSIZ(17)
00070A
SFLDSP SFLDSPCTL
00080A
ROLVAL
4S 0B 1 47SFLROLVAL
A
Related reference
“ALWROL (Allow Roll) keyword for display files” on page 35
This record-level keyword enables your program to page through data in a window on the display
when the system is displaying the record format you are defining.
“SFLEND (Subfile End) keyword for display files” on page 206
You use this record-level keyword on the subfile-control record format to enable the display of a plus
sign (+) or text (More or Bottom) in the lower-right display location occupied by the subfile or a scroll
bar.
SFLRTNSEL (Subfile Return Selected Choices) keyword for display
files
You use this record-level keyword on a selection-list subfile control record to control how choices are
returned to the application with the GET-NEXT-CHANGED operation.
This keyword has no parameters.
If this keyword is specified then SFLMLTCHC or SFLSNGCHC must be specified.
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System i: Programming DDS for display files
Specifying this keyword causes the GET-NEXT-CHANGED operation to return all selected choices. This
includes default choices, which did not actually change. For example, the user never specifically selected
the choice.
If this keyword is not specified, only the changed records will be returned to the application by the
GET-NEXT-CHANGED operation. This means that a default selection will not be returned because that
choice was not changed by the user.
Option indicators are not valid for this keyword.
Example
The following example shows how to specify the SFLRTNSEL keyword.
|...+....1....+....2....+....3....+....4....+....5....+....6....+....7....+....8
A
A
R SFLRCD
SFL
A
CTLFLD
1Y 0H
SFLCHCCTL
A
F1
4A O 6 10
A
R SFLCTLRCD
SFLCTL(SFLRCD)
A
SFLMLTCHC
A
SFLRTNSEL
A
SFLPAG(5) SFLSIZ(&SFLSIZ);
A
SFLDSP SFLDSPCTL
A
ROLLUP(10)
A 10
SFLEND(*SCRBAR)
A
F3
5S 0H
SFLSCROLL
A
F2
4S 0H
SFLRCDNBR(CURSOR *TOP)
A
SFLSIZ
5S 0P
A
1 30'Panel Title'
A
4 5'Single selection list:'
A
In this example, the GET-NEXT-CHANGED operation returns all selected choices. This includes default
choices, which did not actually change, for example, when the user never specifically selected the choice.
SFLSCROLL (Subfile Scroll) keyword for display files
You use this field-level keyword in the subfile-control record format to return the relative record number
of the subfile record that is at the top of the subfile when control is given back to your program.
This keyword has no parameters.
This field must have the keyboard shift attribute of signed numeric with zero decimal positions. It has to
be 5 digits in length, and it must be defined as a hidden field. The hidden field will not display an input
field on the screen.
This field is returned to your program as part of the input for this subfile control record. If control is
returned to your program by pressing the enter key, then the value returned will be the relative record
number of the top subfile record currently displayed.
With the ROLLUP or ROLLDOWN keywords, control is returned to the program when pressing a Page
Up or a Page Down key will page beyond the end of the subfile. Without ROLLUP or ROLLDOWN, a
message is displayed. If control is returned to your program because of the ROLLUP keyword, then the
value returned will be the relative record number of the top subfile record on the next page. If control is
returned to your program because of the ROLLDOWN keyword, then a 1 will be returned in the relative
record number field.
Note: The ROLLUP keyword is the same as the PAGEDOWN keyword and the ROLLDOWN keyword is
the same as the PAGEUP keyword.
DDS for display files
231
SFLSCROLL is not allowed when SFLSIZ equals SFLPAG.
This keyword is valid only for the subfile-control record format.
This keyword is helpful when scroll bars are used (when SFLEND(*SCRBAR) is specified). When the user
interacts with the scroll bar, the hidden field that contains SFLSCROLL contains the relative record
number of the record the user wants displayed. Control is only returned to your program when the user
attempts to scroll into parts of the subfile that are not written to, or when the Enter key is pressed.
Another keyword that might be useful is SFLRCDNBR with *TOP as a parameter. After you have added
records to the subfile, redisplay the subfile with the SFLRCDNBR in effect. Use the same number for this
keyword that was returned to the SFLSCROLL keyword.
You cannot specify the SFLROLVAL, the SFLSCROLL and the SFLRCDNBR keywords for the same field.
Only one SFLSCROLL keyword is allowed in the subfile control record.
Option indicators are not valid for this keyword.
Example
The following example shows how to specify the SFLSCROLL keyword.
|...+....1....+....2....+....3....+....4....+....5....+....6....+....7....+....8
A
A
R SFLRCD
SFL
A
CTLFLD
1Y 0H
SFLCHCCTL
A
F1
4A O 6 10
A
R SFLCTLRCD
SFLCTL(SFLRCD)
A
SFLSNGCHC
A
SFLPAG(5) SFLSIZ(&SFLSIZ);
A
SFLDSP SFLDSPCTL
A
ROLLUP(10)
A 10
SFLEND(*SCRBAR)
A
F3
5S 0H
SFLSCROLL
A
F2
4S 0H
SFLRCDNBR(CURSOR *TOP)
A
SFLSIZ
5S 0P
A
1 30'Panel Title'
A
4 5'Multiple selection list:'
In this example, field F3 contains the relative record number of the subfile record that is at the top of the
subfile when control is given back to the program.
SFLSIZ (Subfile Size) keyword for display files
You use this record-level keyword on the subfile-control record format to specify the number of records
in the subfile.
The maximum number of records allowed is 9999. This keyword is required for the subfile-control record
format.
The format of the keyword is:
SFLSIZ(number-of-records-in-subfile | &number-of-records-in-subfile-field);
The number-of-records-in-subfile parameter can be specified in 2 ways; as a number or
program-to-system field. The program-to-system field must be defined with a length of 5 and data type S.
P-fields can be used for the size of the subfile when using SFLEND with the *SCRBAR parameter. The
application can communicate to the i5/OS operating system the number of records that the applications
will be adding to the subfile. Therefore, the scroll bar can show a better picture of the subfile.
232
System i: Programming DDS for display files
Note: The value for the p-field must be greater than the subfile page value. If the value of the p-field is
not greater than the subfile page value, the size of the subfile will be page value plus one.
Subfile size equals subfile page
When you specify the same parameter values for SFLSIZ and the SFLPAG keyword, you can specify
option indicators for fields in the subfile record format. (This is called field selection.)
When the subfile is built, the records can vary in length depending on which fields are selected, and each
output operation places records into successive positions within the subfile. When the subfile is
displayed, each record can require a different number of display lines. The number of records that
actually fit in the subfile depends on the fields selected for each record written to the subfile.
If the last subfile record written to the subfile fits exactly into the subfile, a status message (CPF5003) is
returned to your program. If the last subfile record written to the subfile overflows the subfile, a notify
message (CPF5043) is returned to your program.
The specified SFLPAG value is increased to equal the maximum number of records that fit on the display
if the number of subfile records to be displayed do not occupy a full display.
The SFLSIZ value is increased by the same value. For example, if SFLPAG(13) and SFLSIZ(13) are
specified, and the subfile record format and SFLLIN value are specified such that three records can fit on
a single display line, SFLPAG and SFLSIZ are increased to 15.
Option indicators are not valid for this keyword. Display size condition names are valid and are required
if the number of records within the subfile changes depending on the display size. You cannot use
display size condition names for this keyword when a program-to-system field is used as a parameter for
it.
Subfile size does not equal subfile page
When you specify different parameter values for SFLPAG keyword and SFLSIZ, the SFLSIZ value
specifies the number of records that can be placed into the subfile. If your program places a record with a
relative record number larger than the SFLSIZ value into the subfile, the subfile is automatically extended
to contain it (up to a maximum of 9999 records). The parameter value you specify should be large
enough to accommodate the maximum number of records you normally have in the subfile.
Example
The following example shows how to specify the SFLSIZ keyword.
|...+....1....+....2....+....3....+....4....+....5....+....6....+....7....+....8
00010A
R SFLR
SFL
00020A 21
FIELD1
78
2 2
00030A 22
FIELD2
40
3 2
00040A*
00050A
R SFLCTLR
SFLCTL(SFLR)
00060A
SFLPAG(5)
00070A
SFLSIZ(5)
00080A
SFLDSP
00090A
SFLDSPCTL
A
Your program issues the following output operations:
Output operation to
SFLR
SFLR
Option indicators set
21 on 22 off
21 on 22 on
Result
Only FIELD1 written to subfile
FIELD1 and FIELD2 written to subfile
DDS for display files
233
Output operation to
SFLR
(The i5/OS operating system sends
status message CPF5003 to your
program.)
SFLCTLR
Option indicators set
21 off 22 on
Result
Only FIELD2 written to subfile
No indicator necessary
Subfile displayed
The resulting display is as follows:
SFLPAG(5)
xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
First Record:
FIELD1
Second Record:
FIELD1
FIELD2
Third Record:
FIELD2
RSLL737-0
Figure 20. Subfile display
In Figure 20, a fourth record cannot be written to the subfile because there is no room on the display for
it (SFLPAG(5) has been specified in the DDS).
SFLSNGCHC (Subfile Single Choice Selection List) keyword for display
files
You use this record-level keyword to define a subfile as a single-choice selection list. A single-choice
selection list is a scrollable group of items from which the user can select only one item.
The format of this keyword is:
SFLSNGCHC[([*NORSTCSR | *RSTCSR] [*NOSLTIND | *SLTIND]
[*NOAUTOSLT | *AUTOSLT | *AUTOSLTENH])]
Parameters are optional and can be entered in any order.
The *RSTCSR parameter specifies whether the arrow keys should be allowed to move the selection cursor
outside of the field. *RSTCSR specifies that the arrow keys will not cause the selection cursor to move
outside of the selection list field. *NORSTCSR specifies that the arrow keys will cause the selection cursor
to leave the field. If the SFLSNGCHC subfile control record is defined in a pulldown, the default is
*RSTCSR. Otherwise, the default is *NORSTCSR.
The *SLTIND parameter specifies whether selection indicators are used when this selection list is
displayed on a graphical display. *SLTIND specifies that the radio buttons should be used on graphical
234
System i: Programming DDS for display files
color displays as selection indicator. *NOSLTIND specifies that no selection indicator should be used on a
graphical color display and only a selection cursor can be used to make a selection. The default is
*NOSLTIND.
The *AUTOSLT parameter indicates if the ENTER key should automatically select the choice currently
being indicated by the selection cursor. *NOAUTOSLT indicates that the user must select the choice.
*AUTOSLTENH indicates that auto-select is only in effect if the device is connected to an enhanced
controller. If the SFLSNGCHC subfile control record is defined in a pulldown, the default is *AUTOSLT.
Otherwise, the default is *NOAUTOSLT.
A subfile containing the SFLSNGCHC keyword must:
v Contain only one output field
v Cannot contain input capable fields
v Can contain hidden fields
This optional keyword is valid only for the subfile-control record format.
The following subfile control record keywords cannot be specified on a record with the SFLSNGCHC
keyword:
SFLDROP
SFLFOLD
SFLMLTCHC
The CHCAVAIL, CHCSLT and CHCUNAVAIL keywords can be used to indicate the color of the items
within the selection list, when the list is displayed on a color display station. The CHCAVAIL keyword
indicates the color of the items within the list which are available for selection. The CHCSLT keyword
indicates the color of the selected item. The CHCUNAVAIL keyword indicates the items on the list which
are not available for selection. These keywords can be used in a subfile control record only if
SFLSNGCHC or SFLMLTCHC keywords are also used.
Option indicators are not valid for this keyword.
Example 1
The following example shows how to specify the SFLSNGCHC keyword:
|...+....1....+....2....+....3....+....4....+....5....+....6....+....7....+....8
A
A
R SFLRCD
SFL
A
CTLFLD
1Y 0H
SFLCHCCTL
A
F1
10A O 6 10
A
R SFLCTLRCD
SFLCTL(SFLRCD)
A
SFLSNGCHC
A
SFLPAG(5) SFLSIZ(&SFLSIZ);
A
SFLDSP SFLDSPCTL
A
ROLLUP(10)
A 10
SFLEND(*SCRBAR)
A
F3
5S 0H
SFLSCROLL
A
F2
4S 0H
SFLRCDNBR(CURSOR *TOP)
A
SFLSIZ
5S 0P
A
1 30'Panel Title'
A
4 5'Select One Item:'
In this example, when using a graphical display station attached to a controller that supports an
enhanced interface for nonprogrammable workstations, a single-choice list looks like this:
DDS for display files
235
Example 2
The following example shows how to specify what color the items on the list should have on a color
display. Available items are displayed in red. A selected item is displayed in blue. Unavailable items are
displayed in yellow. The CHCAVAIL, CHCSLT, and CHCUNAVAIL keywords can also be used to set the
display attributes of the items on the list. See the description of these keywords in this topic collection for
examples of setting display attributes.
|...+....1....+....2....+....3....+....4....+....5....+....6....+....7....+....8
A
A
R SFLRCD
SFL
A
CTLFLD
1Y 0H
SFLCHCCTL
A
F1
10A O 6 10
A
R SFLCTLRCD
SFLCTL(SFLRCD)
A
SFLSNGCHC
A
SFLPAG(5) SFLSIZ(&SFLSIZ);
A
SFLDSP SFLDSPCTL
A
ROLLUP(10)
A
CHCAVAIL((*COLOR RED))
A
CHCSLT((*COLOR BLU))
A
CHCUNAVAIL((*COLOR YLW))
A 10
SFLEND(*SCRBAR)
A
F3
5S 0H
SFLSCROLL
A
F2
4S 0H
SFLRCDNBR(CURSOR *TOP)
A
SFLSIZ
5S 0P
A
1 30'Panel Title'
A
4 5'Select One Item:'
SLNO (Starting Line Number) keyword for display files
You use this record-level keyword to specify a starting line number for the record format you are
defining.
If specified, SLNO adjusts the actual line numbers for each field in the record format. If you do not
specify SLNO, fields in the record format are displayed on the lines you specify for them in positions 39
through 41.
The format of the keyword is:
SLNO(n | *VAR)
You can specify one of two parameter values for this keyword:
v Specify n, where n is a value between 1 and 27. All fields in the record format are offset n-1 lines down
the display from their specified locations. If SLNO(1) is specified, the record format must not contain a
field starting at line 1, position 1.
v Specify *VAR to enable your program to set the starting line number at runtime before displaying the
record format. At file creation time, the i5/OS program sets the starting line number to one. A warning
message appears at file creation time if the record contains a field starting at line 1, position 1. If your
236
System i: Programming DDS for display files
program does not set the starting line number or sets it to zero, the i5/OS operating system assumes
its value is one. If your program sets the starting line number to a value such that the first field in the
record format does not all fit on the display, or sets it to a negative value, the i5/OS operating system
sends a notify message (CPF5002) to your program, and the record is not displayed. If the starting line
number is set to one and the record format contains a field starting at line 1, position 1, the i5/OS
operating system sends an error message (CPF5398) to your program. The record is not displayed.
To calculate the line on which a field is actually displayed, subtract one from the line number specified
in positions 39 through 41 and add the starting line number to the result. The record format begins on
the line specified with SLNO unless a field is defined at line 1, position 1. In that case, the beginning
attribute byte is in the last position of the previous line and the starting line of the format is one less
than that specified by SLNO.
When *VAR is specified, no field in the record can occupy the last position on the display.
If a CLRL(nn) or CLRL(*END) keyword is also in effect for this record when it is to be displayed, lines on
the display are cleared beginning with the starting line number for the format.
If you use the SLNO(*VAR) keyword with the OVERLAY keyword but without the CLRL keyword and
then write the record several times, each time with a different starting number, the previous record is
deleted before the new record displays.
The i5/OS program checks the starting line number to determine whether the previous output operation
to the record had the same starting line number if you use the SLNO keyword with the following
keywords:
ERRMSG
ERRMSGID
PUTOVR
PUTRETAIN
If the starting numbers are the same, the actions specified by the ERRMSG, ERRMSGID, PUTOVR, or the
PUTRETAIN keyword is performed.
If the starting line numbers are not the same, the ERRMSG, ERRMSGID, PUTOVR, or PUTRETAIN
keyword is ignored, and the record format displays with the lines adjusted to the new value.
The SLNO keyword is not allowed in a record format that has one of the following keywords specified:
ASSUME
KEEP
SFL
SFLCTL
USRDFN
SLNO cannot be specified for the record format specified by the PASSRCD keyword.
Option indicators are not valid for this keyword.
Example
The following example shows how to specify the SLNO keyword.
|...+....1....+....2....+....3....+....4....+....5....+....6....+....7....+....8
00010A
R RECORD1
SLNO(*VAR)
00020A
FIELD1
5
I 2 2
00030A
FIELD2
5
B 3 2
00040A
DDS for display files
237
00050A
00060A
00070A
A
R RECORD2
FIELD3
FIELD4
5
5
SLNO(2)
10 2
B 10 13
In this example, when the starting line number is zero or one, FIELD1 is displayed on line 2 and FIELD2
is displayed on line 3, as specified. When the starting line number is set to 2 in your program, FIELD1 is
displayed on line 3 (2 - 1 + 2 = 3) and FIELD2 is displayed on line 4 (2 - 1 + 3 = 4).
FIELD3 and FIELD4 are always displayed on line 11 (2 - 1 + 10 = 11).
SNGCHCFLD (Single-Choice Selection Field) keyword for display files
You use this field-level keyword to define a field as a single-choice selection field.
A single-choice selection field is a field that contains a fixed number of choices from which a user can
select one choice. The field appears as a vertical list of choices, with a single input field at the upper left,
or as a group of radio buttons.
The format of this keyword is:
SNGCHCFLD[([*NORSTCSR | *RSTCSR]
[*NOAUTOSLT | *AUTOSLT | *AUTOSLTENH]
[*NOSLTIND | *SLTIND]
[*NOAUTOENT | *AUTOENT | *AUTOENTNN]
[[(*NUMCOL nbr-of-cols) | (*NUMROW nbr-of-rows)]
[(*GUTTER gutter-width)]])]
Parameters are optional. If none are specified, the single-choice field choices will be arranged in a single
vertical column. The user will be allowed to move the selection cursor out of this field using the arrow
keys.
The RSTCSR parameter specifies whether the arrow keys should be allowed to move the selection cursor
outside of the selection field. *RSTCSR specifies that the arrow keys will not cause the selection cursor to
move outside of the selection field. *NORSTCSR specifies that the arrow keys will cause the selection
cursor to leave the selection field. The default is *NORSTCSR.
Note: An exception to the restrictions imposed by *RSTCSR happens if the selection field is the only field
contained within a pull-down window. In that case, when the selection cursor is within the
leftmost or rightmost columns, the left and right arrow keys will close the current pull-down
window and open the pull-down window associated with the menu-bar choice to the left or right
of the current menu-bar choice.
The *RSTCSR parameter is ignored on displays that are not connected to a controller that supports an
enhanced interface for nonprogrammable workstations.
The AUTOSLT parameter indicates if the ENTER key should automatically select the choice currently
being indicated by the selection cursor. *NOAUTOSLT indicates that the user must select the choice.
*AUTOSLTENH indicates that auto-select is only in effect if the device is connected to an enhanced
controller. The default is *AUTOSLT.
The SLTIND parameter indicates whether selection indicators (such as radio buttons) should be
displayed. *NOSLTIND specifies that the selection indicators should not be displayed. The default is
*SLTIND.
Auto-enter will cause the record to be returned as soon as a choice is selected (as if the user had also
pressed the enter key). The AUTOENT parameter indicates to what extent Auto-Enter should be enabled.
*NOAUTOENT indicates that no auto-enter will be in effect. *AUTOENT will enable auto-enter on all
238
System i: Programming DDS for display files
displays unless a double digit selection number is required for any of the choices. *AUTOENTNN will
enable auto-enter only if numeric selection of the choices is not required. If not specified, this parameter
is set to *NOAUTOENT as default.
*NUMCOL specifies that this selection field should be displayed in multiple columns with the choices
spread across the columns in this manner:
choice1
choice4
choice7
choice2
choice5
choice8
choice3
choice6
choice9
The nbr-of-cols portion of the parameter specifies how many columns the selection field should contain.
Nbr-of-cols must be a positive integer and the entire single-choice selection field must be able to fit on
the display when placed in the specified number of columns.
*NUMROW specifies that this selection field should be displayed in multiple rows with the choices
spread across the columns in this manner:
choice1
choice2
choice3
choice4
choice5
choice6
choice7
choice8
choice9
The nbr-of-rows portion of the parameter specifies how many rows the selection field should contain.
Nbr-of-rows must be a positive integer and the entire single-choice selection field must be able to fit on
the display when placed in the specified number of rows.
The *GUTTER parameter is optional and specifies the number of spaces to be placed between columns of
the single-choice selection field. It can only be specified if either *NUMCOL or *NUMROW has been
specified and must follow the (*NUMxxx #) parameter. The gutter-width must be a positive integer of at
least 2. If *GUTTER is not specified, the default of gutter-width is set to three spaces (including leading
and trailing choice text attributes).
A field containing the SNGCHCFLD keyword must also contain one or more CHOICE keywords defining
the choices for the field.
The field containing the SNGCHCFLD keyword must be defined as an input-capable field with data type
Y, length equal to 2, and zero decimal positions. The position specified for the field is the position of the
input field displayed to the left of the first choice, or of the uppermost radio button. On input, the field
contains the number of the choice selected, or 0 if no choice was selected. On output, if the field contains
a choice number, that choice is displayed as the default selection.
Provide a minimum of two spaces between the end of the previous field and the position specified for
the single choice field. This allows an ending attribute for the previous field, and a beginning attribute
for the single choice field. These attributes cannot overlap.
The following keywords can be specified on a field with the SNGCHCFLD keyword:
ALIAS
AUTO(RA)
CHANGE
CHCACCEL
CHCAVAIL
CHCUNAVAIL
CHCSLT1
CHCCTL
CHECK(ER)2
CHECK(FE)3
CHOICE
CHGINPDFT
COLOR4
DSPATR(RI UL BL CS HI ND PC)4
ERRMSG
ERRMSGID
INDTXT
PUTRETAIN
TEXT
DDS for display files
239
Notes:
1. CHCSLT functions only if the single-choice selection field is displayed in a pull-down menu
that does not display selection indicators (for example, PULLDOWN(*NOSLTIND) specified).
2. Check(ER) is not allowed with SNGCHCFLD if the AUTOENT or AUTOENTNN parameters
have been specified.
3. Check(FE) applies only to a display attached to a controller that does not support an enhanced
interface.
4. If the COLOR or DSPATR keyword is specified for a field with the SNGCHCFLD keyword, it
applies only to the input field portion of the selection field on character-based displays.
Option indicators are not valid for this keyword.
Example
The following example shows how to specify the SNGCHCFLD keyword:
|...+....1....+....2....+....3....+....4....+....5....+....6....+....7....+....8
A
A
R RECORD
A
:
A
:
A
3 3'Single selection field.
:'
A
F1
2Y 0B 3 35SNGCHCFLD
A 01
CHOICE(1 '>Undo
')
A
CHOICE(2 &MARKTXT);
A
CHOICE(3 '>Copy
')
A
MARKTXT
10A P
A
In this example, when using a graphical display station attached to a controller that supports an
enhanced interface for nonprogrammable workstations, the selection fields look like this:
RV2W864-1
SYSNAME (System Name) keyword for display files
You use this field-level keyword to display the current system name as a constant (output-only) field that
is 8 characters long.
You can specify the location of the field, the SYSNAME keyword, and, optionally, the COLOR, DSPATR,
and TEXT keywords. Positions 17 through 38 must be blank.
This keyword has no parameters.
Option indicators are not valid for this keyword, although option indicators can be used to condition the
field on which it is specified.
Example
The following example shows how to specify the SYSNAME keyword.
240
System i: Programming DDS for display files
|...+....1....+....2....+....3....+....4....+....5....+....6....+....7....+....8
00010A
R RECORD1
00020A
2 62'SYSTEM:'
00030A
2 72SYSNAME
A
TEXT (Text) keyword for display files
You use this record- or field-level keyword to supply a text description (or comment) for the record
format or field that is used for program documentation.
TEXT is valid for any record format or field, except a SFLMSGKEY or SFLPGMQ field.
The format of the keyword is:
TEXT('description')
The text must be enclosed in single quotation marks. If the length of the text is greater than 50 positions,
only the first 50 characters are used by the high-level language compiler.
Option indicators are not valid for this keyword.
Example
The following example shows how to specify the TEXT keyword at the record and field levels.
|...+....1....+....2....+....3....+....4....+....5....+....6....+....7....+....8
00010A
R CUSMST
TEXT('Customer Master Record')
00020A
FLD1
3 0
TEXT('ORDER NUMBER FIELD')
A
TIME (Time) keyword for display files
You use this field-level keyword to display the current system time as a constant (output-only) field.
This keyword has no parameters.
You can specify only the location of the field, TIME, and optionally, the EDTCDE, EDTWRD, COLOR,
DSPATR, or TEXT keyword. Positions 17 through 38 must be blank.
The edit word '0_:__:__' (_ represents a blank) is assumed for a TIME field. You can specify another
edit word or one of the user-defined edit codes (5 through 9) to change the IBM-supplied editing.
Option indicators are not valid for this keyword, although option indicators can be used to condition the
field with which it is specified.
Example
The following example shows how to specify the TIME keyword.
|...+....1....+....2....+....3....+....4....+....5....+....6....+....7....+....8
00010A 20
1 56TIME
00020A 21
1 56TIME
00030A
EDTWRD('0 &HRS&; &MINS&; &SECS')
A
In this example, the system time is 110645.
v If option indicator 20 is on, the time is displayed as:
11:06:45
v If option indicator 21 is on (and option indicator 20 is off), the time is displayed as:
11 HRS 06 MINS 45 SECS
DDS for display files
241
TIMFMT (Time Format) keyword for display files
You use this field-level keyword to specify the format of a time field. This keyword is valid for time
fields (data type T).
The format of the keyword is:
TIMFMT(time-format)
The following table describes the valid time formats and their default separators.
Format name
Time format
parameter
Time format and
separator
Field length
Example
Hours:Minutes:Seconds
International
Standards Organization
IBM USA Standard
*HMS
*ISO
hh:mm:ss
hh.mm.ss
8
8
14:00:00
14.00.00
*USA
8
2:00 pm
IBM European Standard
Japanese Industrial
Standard Christian Era
*EUR
*JIS
hh:mm AM or
hh:mm PM
hh.mm.ss
hh:mm:ss
8
8
14.00.00
14:00:00
If you do not specify the TIMFMT keyword, the default is *ISO.
If you specify the time-format parameter value as *ISO, *USA, *EUR, or *JIS, you cannot specify the
TIMSEP keyword. These formats have fixed separators.
The format of DFT, DFTVAL, and MAPVAL keyword values must match the format that the TIMFMT
keyword specifies. If the TIMFMT keyword is set to *ISO as default, these values must have a format of
*ISO.
The TIMFMT keyword overrides the job attribute for a time field. It does not change the system default.
It is the responsibility of the high-level language and the application to format the time field according to
the format specified for the TIMFMT keyword and use the separators specified on the TIMSEP keyword.
The system does not format fields on output. The system validates the time field on input according to
the format the TIMFMT keyword specifies and the separator that the TIMSEP keyword specifies.
Option indicators are not valid for this keyword, although you can use option indicators to condition the
field for which it is specified.
Example
The following example shows how to specify the TIMFMT keyword.
|...+....1....+....2....+....3....+....4....+....5....+....6....+....7....+....8
00010A
00020A
R RECORD
00030A
TIMFLD1
T B 5 2TIMFMT(*ISO)
00040A
TIMFLD2
T B 5 22TIMFMT(*USA)
00050A
TIMFLD3
T B 5 42TIMFMT(*HMS) TIMSEP(',')
A
If you want to display 2 o’clock p.m., the following values are displayed where RECORD1 appears.
TIMFLD1
TIMFLD2
TIMFLD3
242
14.00.00
02:00 PM
14,00,00
System i: Programming DDS for display files
TIMSEP (Time Separator) keyword for display files
You use this field-level keyword to specify the separator character used for a time field. This keyword is
valid only for time fields (data type T).
The format of the keyword is:
TIMSEP(*JOB | 'time-separator')
The time-separator parameter specifies the separator character that appears between the hour, minute,
and second values. Valid values are a colon (:), a period (.), a comma (,), and a blank ( ). Single quotation
marks must enclose the parameter.
If you specify the *ISO, *USA, *EUR, or *JIS time-format values for the TIMFMT keyword, you should
not specify the TIMSEP keyword. These formats have fixed separators.
If you do not specify the TIMSEP keyword and you specify TIMFMT as a format that does not have a
fixed date separator, TIMSEP is set to *JOB as default.
If you specify *JOB or if TIMSEP is set to *JOB as default, the high-level language and the application
handle the separator as a colon (:). On output the system converts the separator that was specified by the
Time Separator Job Definition Attribute. On input, the system converts the separator to a colon (:) before
passing control to the application.
The separator for DFT, DFTVAL, and MAPVAL keyword values must match the separator that the
TIMSEP keyword specifies. If the TIMSEP keyword specifies *JOB the TIMSEP keyword is set to *JOB as
default, these values must a colon ’:’ format.
The TIMSEP keyword overrides the job attribute for a time field. It does not change the system default.
It is the responsibility of the high-level language and the application format the time field according to
the format specified for the TIMFMT keyword and use the separators specified for the TIMSEP keyword.
The system does format fields on output. The system validates the time field on input according to the
format that the TIMFMT keyword specifies and the separator that the TIMSEP keyword specifies.
Option indicators are not valid for this keyword, although you can use option indicators to condition the
field for which it is specified.
Example
The following example shows how to specify the TIMSEP keyword.
|...+....1....+....2....+....3....+....4....+....5....+....6....+....7....+....8
00010A
00020A
R RECORD
00030A
TIMFLD1
T
TIMFMT(*HMS) TIMSEP(' ')
00040A
TIMFLD2
T
TIMFMT(*HMS) TIMSEP('.')
00050A
TIMFLD3
T
TIMFMT(*HMS) TIMSEP(*JOB)
If you want to display 2 o’clock p.m. and the time separator that is defined by the Definition Attribute is
:, the following values are displayed when RECORD1 appears.
TIMFLD1
TIMFLD2
TIMFLD3
14 00 00
14.00.00
14:00:00
UNLOCK (Unlock) keyword for display files
You use this record-level keyword to specify that the i5/OS operating system is to unlock the keyboard
immediately after issuing an input operation to the record format you are defining.
DDS for display files
243
Without the UNLOCK keyword, the i5/OS operating system leaves the keyboard locked after reading the
data on the display. The workstation user cannot key data into input-capable fields while the data that
has just been read is being processed.
The format of the keyword is:
UNLOCK[(*ERASE) | (*MDTOFF)] | [(*ERASE *MDTOFF)] |
[(*MDTOFF *ERASE)]
The parameter values *ERASE and *MDTOFF are optional. If you do not specify any parameter value,
*ERASE is the default.
When your program sends an input operation, the following sequence of operations typically occurs:
1. The keyboard is unlocked (if it is not already unlocked) to allow the workstation user to key into
input-capable fields on the display.
2. The workstation user presses the Enter key (or a valid function key).
3. Modified data tags (MDTs) for input-capable fields in the record format are set on if they have been
typed into or if they were displayed with the DSPATR(MDT) keyword in effect.
4. When the input operation is completed, the parameter values for UNLOCK affect the input-capable
fields with MDTs set on as described in the following sections.
UNLOCK (without GETRETAIN) or UNLOCK(*ERASE)
The keyboard remains unlocked, input-capable fields on the display are erased, and their MDTs remain
on following the input operation.
UNLOCK(*MDTOFF) or UNLOCK (with GETRETAIN)
The keyboard remains unlocked, input-capable fields on the display are not erased, and their MDTs are
set off following the input operation.
UNLOCK(*ERASE *MDTOFF) or UNLOCK(*MDTOFF *ERASE)
The keyboard remains unlocked, input-capable fields on the display with their MDTs set on are erased,
and their MDTs are set off following the input operation.
The GETRETAIN keyword is ignored and an error message results at file creation time if the
GETRETAIN keyword is specified with UNLOCK(any parameter).
Note: This keyword does not prevent your program from issuing an output operation immediately after
an input operation. However, the keyboard is unlocked and the workstation user can be typing
input data when the output operation changes the display.
Option indicators are not valid for this keyword.
Example
The following example shows how to specify the UNLOCK keyword.
|...+....1....+....2....+....3....+....4....+....5....+....6....+....7....+....8
00010A
R RECORD1
UNLOCK(*ERASE)
00020A
FLD1
4
B 2 2
00030A
FLD2
4
B 3 2
A
00040A
R RECORD2
UNLOCK(*MDTOFF)
00050A
FLD21
4
B 4 2
00060A
FLD22
4
B 5 2
A
244
System i: Programming DDS for display files
00070A
00080A
00090A
A
R RECORD3
FLD31
FLD32
UNLOCK(*ERASE *MDTOFF)
4
4
B
B
6
7
2
2
Related reference
“GETRETAIN (Get Retain) keyword for display files” on page 122
You use this record-level keyword with the UNLOCK keyword to specify that the i5/OS operating
system is not to erase input-capable fields on input operations as described under the UNLOCK
keyword.
USER (User) keyword for display files
You use this field-level keyword to display the user profile name for the current job as a constant
(output-only) field that is 10 characters long.
You can specify the location of the field, the USER keyword, and, optionally, the COLOR, DSPATR, and
TEXT keywords. Positions 17 through 38 must be blank.
This keyword has no parameters.
Option indicators are not valid for this keyword, although option indicators can be used to condition the
field on which it is specified.
Note: For a System/36 environment Multiple Requester Terminal (MRT) job, the displayed user profile
name is the same user profile name of the interactive job for the display station where the display
file is shown.
Example
The following example shows how to specify the USER keyword.
|...+....1....+....2....+....3....+....4....+....5....+....6....+....7....+....8
00010A
R RECORD1
00020A 10
2 12'USER:'
00030A 10
2 20USER
00040A
DSPATR(HI)
00050A N10
15 18'USER:'
00060A N10
15 26USER
00070A
DSPATR(HI)
A
In this example, if indicator 10 is on, the user name is displayed on line 2 starting in column 20. If
indicator 10 is off, the user name is displayed on line 15 starting in column 26.
USRDFN (User-Defined) keyword for display files
You use this record-level keyword to specify that the data for this record is in the form of a user-defined
data stream.
This keyword has no parameters.
No fields are valid for this record because the data stream formats the display. No file- or record-level
keywords apply to this record except INVITE, KEEP, PASSRCD, HLPRTN, HELP, HLPCLR, PRINT,
OPENPRT, and TEXT. However, the HELP, HLPRTN, and INVITE keywords will only apply if they are
specified on this record. They will not apply if they are specified at the file-level. Help specifications are
valid for this record. Once you do an output operation for this record, the i5/OS program no longer
holds knowledge of the status of the records on the device. You should have in-depth knowledge of the
device before using this keyword.
DDS for display files
245
Option indicators are not valid for this keyword.
Example
The following example shows how to specify the USRDFN keyword.
|...+....1....+....2....+....3....+....4....+....5....+....6....+....7....+....8
00020A
R USRREC
USRDFN
00030A
A
USRDSPMGT (User Display Management) keyword for display files
You use this file-level keyword to specify that all data written to the display is held until the data is
overwritten or cleared by using the CLRL keyword.
This keyword has no parameters.
Related concepts
“System/36 environment considerations for display files” on page 261
The User Display Management (USRDSPMGT) keyword causes the record formats in the display file
to function similarly to System/36 SFGR display formats.
USRRSTDSP (User Restore Display) keyword for display files
You use this record-level keyword on a window record to specify that the application will manage the
display.
Window records are not automatically removed. If this keyword is not specified, the system saves and
restores the underlying display when a window record is displayed.
This keyword has no parameters.
The WINDOW keyword must be specified on the same record as the USRRSTDSP keyword. The
USRRSTDSP keyword functions only when the window keyword defines a window. The USRRSTDSP
keyword does not function if the window keyword specified a record format name.
Option indicators are valid for this keyword.
Example
The following example shows how to specify the USRRSTDSP keyword.
|...+....1....+....2....+....3....+....4....+....5....+....6....+....7....+....8
A
R APPRCD
A
FIELD1
10A O 5 40
A
FIELD2
5S 0B 6 45
A
R WINDOW1
WINDOW(6 15 9 30)
A 25
USRRSTDSP
A
FIELD1
5A B 2 2
A
FIELD2
20S B 8 5
A
In this example, suppose APPRCD is already on the display. If indicator 25 is set on when WINDOW1 is
written to the display, the system does not save the underlying display (which contains APPRCD). When
the user exits WINDOW1, the application must restore the underlying display, possibly by rewriting
APPRCD to the display.
Note: With USRRSTDSP, there is no limit on the number of windows. The limit is 12 without using the
USRRSTDSP keyword.
Related reference
246
System i: Programming DDS for display files
“WINDOW (Window) keyword for display files” on page 255
You use this record-level keyword to specify that the record format you are defining will be displayed
using a window.
VALNUM (Validate Numeric) keyword for display files
You use this file-level, record-level, or field-level keyword to enhance the error checking that is performed
against fields with the data type numeric-only.
When specified on a numeric only field, this keyword causes an error message to be returned if the user
attempts to embed a SPACE, PLUS SIGN or MINUS SIGN between numeric digits in the field or when
the PLUS SIGN or MINUS SIGN precedes the numeric digits.
This keyword has no parameters.
The field containing the VALNUM keyword must be defined as an input-capable field with the data type
Y.
Option indicators are not valid for this keyword.
Example
The following example shows how to specify the VALNUM keyword:
|...+....1....+....2....+....3....+....4....+....5....+....6....+....7....+....8
00010A
R RECORD
00020A
F1
5Y 0B 3 4VALNUM
00030A
F2
5Y 0B 4 4
In this example, field F1 does not allow the user to embed a space, plus sign, or minus sign within the
numeric value, nor to precede the numeric value with a plus sign or minus sign. Field F2 is treated as
described in “Data type and keyboard shift for display files (position 35)” on page 11.
VALUES (Values) keyword for display files
You use this field-level keyword to specify a list of values that are valid for the user to type into the field.
The i5/OS operating system performs an implied equals test on the data typed in against the value(s)
you specify here. Note that the i5/OS operating system performs this checking only if the field is
changed by the workstation user or if its modified data tag (MDT) is set on using DSPATR(MDT).
Note: The CHKMSGID keyword information defines user-specified error messages.
The format of the keyword is:
VALUES(value-1 [value-2... [value-100]])
There can be 1 to 100 values; specify them as parameter values with the keyword and separate them by
at least one blank.
Note: You cannot specify more than 5000 characters in a single DDS statement. Therefore, you cannot
specify character values that cause VALUES to be longer than 5000 characters. If you specify other
keywords for the same field, they also count toward the 5000-character limit. For example,
specifying DSPATR(HI) for the field reduces the number of characters left for VALUES.
A value can be a numeric or a character value, corresponding in length to the field that is to be tested. A
character value must be enclosed in single quotation marks. A numeric value is restricted to the digits 0
through 9 and can be preceded by a minus sign (-) for negative values. Alignment is on the low-order
character position.
DDS for display files
247
Defining a numeric field for display files
When a workstation user types in data, the i5/OS operating system aligns the entered characters
according to the number of decimal positions in the field. Leading and trailing blanks are filled with
zeros when the field is passed to your program. If no decimal character is typed, the i5/OS program
places a decimal character to the right of the farthest right character typed in. For example, for a numeric
field with a length of 5 (specified in position 34) and 2 decimal positions (specified in position 37), 1.2 is
interpreted as 001.20, and 100 is interpreted as 100.00.
The compare is based on the value as it is passed to your program (for example, right-aligned and
padded or left-aligned and padded).
You cannot specify VALUES on a floating-point field (F in position 35).
Option indicators are not valid for this keyword.
Example
The following example shows how to specify the VALUES keyword for a character and numeric values
test.
|...+....1....+....2....+....3....+....4....+....5....+....6....+....7....+....8
00010A
RESPC
11
I 8 2VALUES('A' 'B' 'C' 'D')
00020A
RESPN
31 0I 9 2VALUES(33 -42 01)
00030A
DECFLD
1 2I 11 2VALUES(1.2 100)
A
Related reference
“CHKMSGID (Check Message Identifier) keyword for display files” on page 65
You use this field-level keyword to identify an error message that is issued when a validity check
error is detected.
VLDCMDKEY (Valid Command Key) keyword for display files
You use this file-level or record-level keyword to specify that the i5/OS licensed program is to set on the
specified response indicator when any valid command key other than the Enter key is pressed by the
workstation user.
One use of this function is to perform a simple test to determine if the workstation user has requested a
function you want to watch for in your program.
See “System/36 environment considerations for display files” on page 261 for information about how to
specify the VLDCMDKEY keyword in files that are used in the System/36 environment.
The format of the keyword is:
VLDCMDKEY(response-indicator ['text'])
The response-indicator parameter is required.
The optional text is included on the computer printout created at program compilation to explain the
intended use of the indicator. This text’s only function in the file or the program is a comment. The single
quotation marks are required. If you specify more than 50 characters between the single quotation marks,
the text is truncated to 50 characters on the program computer printout.
For a command key to be considered valid, you must have activated the key by specifying it with one of
the following keywords:
Keyword
Comments
248
System i: Programming DDS for display files
ALTHELP(CAnn)
With or without response indicator on the HELP keyword. Causes the command attention key
specified to be considered a valid command key.
ALTPAGEUP(CFnn)
With or without response indicator on the PAGEUP keyword. Causes the command function key
specified to be considered a valid command key if PAGEUP is also specified.
ALTPAGEDWN(CFnn)
With or without response indicator on the PAGEDOWN keyword. Causes the command function
key specified to be considered a valid command key if PAGEDOWN is also specified.
CAnn With or without response indicator.
CFnn
With or without response indicator.
CLEAR
With or without response indicator.
HELP Valid only when HELP key is passed back to application as follows:
v HELP and HLPRTN (with or without a response indicator).
v HELP (with or without a response indicator) and no help areas are defined for any records
currently being displayed.
HOME
With or without response indicator.
PAGEDOWN
With or without response indicator.
PAGEUP
With or without response indicator.
PRINT
Valid only when PRINT key is passed back to application as follows:
v PRINT (with a response indicator).
v PRINT (*PGM).
ROLLUP
With or without response indicator.
ROLLDOWN
With or without response indicator.
Option indicators are not valid for this keyword.
Example
The following example shows how to specify the VLDCMDKEY keyword.
|...+....1....+....2....+....3....+....4....+....5....+....6....+....7....+....8
00010A
R REC1
VLDCMDKEY(90 'Any valid key')
00020A
CA01(91)
00030A
CA02(92)
00040A
CA03(93)
00050A
CLEAR(94)
A
In this example, Indicator 90 is set on if any of four keys (CA01, CA02, CA03, or Clear) is pressed.
DDS for display files
249
WDWBORDER (Window Border) keyword for display files
You use this file-level or record-level keyword to specify the color, display attributes, and characters used
to form the border of a window.
The format of the keyword is:
WDWBORDER([color] [display-attribute] [characters])
At least one parameter must be specified.
The color parameter specifies the color of the border characters on a color display station (3179 Models
C1 and C2, 5292 Color display stations only, or 5555 Models C01 and F01). The parameter is specified as
an expression of the form (*COLOR value).
The valid values for the color parameter are:
Value Meaning
BLU
Blue
GRN
Green
WHT
White
RED
Red
TRQ
Turquoise
YLW
Yellow
PNK
Pink
If the color parameter is not specified, the default is BLU. This parameter is ignored if it is specified for a
window on a monochrome display.
The display-attribute parameter specifies the display attributes of the border characters. The parameter is
specified as an expression of the form (*DSPATR [value1 [value2 [value3...]]]). If more than one DSPATR
value is used, they are combined to form one DSPATR that is used for the entire border.
The valid values for the display-attributes values are:
Value Meaning
BL
Blink
CS
Column separator
HI
High intensity
ND
Nondisplay
RI
Reverse image
UL
Underline
There is no default for display-attributes.
Note: Display-attributes CS, HI, and BL can cause fields on 5292, 3179, and 3197 Model C1 and C2
display stations to appear as color fields. Display-attributes HI, RI, and UL cause a border not to
be displayed.
The characters parameter specifies the characters that make up the border. The parameter is specified as
an expression of the form (*CHAR ’border-characters’). The border character value is an 8-character string
that defines the border characters in the following order:
250
System i: Programming DDS for display files
top-left-corner
top-border
top-right-corner
left-border
right-border
bottom-left-corner
bottom-border
bottom-right-corner
If this parameter is not specified, the default border characters are period (.) for the upper-left and right
corners and the top and bottom borders, colon (:) for the left and right borders and lower-left and right
corners. Although any displayable character can be specified as a border character, it is recommended
that you use invariant characters.
The following table shows the invariant characters:
Table 14. Character set for system data
Hexadecimal
Character
40
Description
Blank
4B
.
Period
4C
<
Less than sign
4D
(
Left parenthesis
4E
+
Plus sign
50
&
Ampersand
5C
*
Asterisk
5D
)
Right parenthesis
5E
;
Semicolon
60
-
Minus sign
61
/
Slash
6B
,
Comma
6C
%
Percent sign
6D
_
Underline
6E
>
Greater than sign
6F
?
Question mark
7A
:
Colon
7D
’
Single quotation mark
7E
=
Equal sign
Note: In addition, you can use any of the following characters:
v Uppercase alphabetic characters: A through Z
v Numeric characters: 0 through 9
If the WDWBORDER keyword is specified at the record level, the WINDOW or PULLDOWN keyword
must also be specified on the same record. If a WINDOW keyword that references another window is
also specified, a warning message is issued.
Option indicators are valid for this keyword.
DDS for display files
251
You can specify more than one WDWBORDER on a record. If you specify the WDWBORDER keyword
more than once at the file level or at a record level, the parameters for the keywords that are in effect are
combined on the same level. If different values are specified for the same parameter, the parameter value
of the first keyword is used.
If the WDWBORDER keyword is specified both at the file level and on a window or pull-down definition
record, the parameter values defined at both levels are combined. If different values are specified for the
same parameter, the parameter value at the record level is used.
Example
The following example shows how to specify the WDWBORDER keyword.
|...+....1....+....2....+....3....+....4....+....5....+....6....+....7....+....8
A 01
WDWBORDER((*COLOR PNK) +
A
(*DSPATR BL))
A
R RECORD1
WINDOW(6 15 9 30)
A N01
WDWBORDER((*COLOR GRN))
A 01
WDWBORDER((*COLOR RED))
A
FIELD1
5A B 2 2
A
FIELD2
20A B 8 5
A
R RECORD2
WINDOW(8 20 9 30)
A
WDWBORDER((*COLOR YLW) +
A
(*DSPATR RI))
A
FIELD3
5A B 2 2
A
FIELD4
20A B 8 5
A
LINE
2S 0P
A
POS
2S 0P
A
R RECORD3
WINDOW(&LINE &POS 9 30)
A
WDWBORDER((*CHAR +
A 02
'+-+||+-+'))
A
FIELD3
5A B 2 2
A
FIELD4
20A B 8 5
A
LINE
2S 0P
A
POS
3S 0P
A
If the window defined by RECORD1 is written to the display with indicator 01 set off, it has a green
border constructed of colons for the vertical borders and periods for the horizontal borders. If indicator
01 is set on, the window has a blinking red border.
When the window defined by RECORD2 is written to the display, it has a yellow border displayed in
reverse image constructed of the default border characters.
When the window defined by RECORD3 is written to the display, the following output appears:
v If indicator 02 is set on and indicator 01 is off, the window has a blue border constructed of dashes for
the top and bottom borders, vertical bars for the left and right borders, and plus signs for the corners.
v If indicator 02 is set off and indicator 01 is set on, the window has a pink border.
v If indicators 01 and 02 are on, the window has a pink border constructed of dashes for the top and
bottom borders, vertical bars for the left and right borders, and plus signs for the corners.
Related reference
“COLOR (Color) keyword for display files” on page 73
You use this keyword to specify the color of a field on a color display.
WDWTITLE (Window Title) keyword for display files
You use this record-level keyword to specify the text, color, and display attributes for a title that is
embedded within the top or bottom border of a window.
The format of the keyword is:
252
System i: Programming DDS for display files
WDWTITLE([title-text] [title-text-color]
[title-text-display-attribute]
[*CENTER | *LEFT | *RIGHT]
[*TOP | *BOTTOM])
At least one parameter must be specified.
The title-text parameter is an optional parameter which specifies the text that will be placed in the border
of the window. The length of the text should be less than or equal to the window-positions parameter of
the associated WINDOW definition record. If blanks are placed at the beginning of the text string, the
title will be shortened so there are a equal number of blanks at the end. If the text string is too long (>
window-positions), it will be truncated on the right. The parameter is specified as an expression of the
form (*TEXT value) where value can be specified in one of two forms:
v As a character string: ’Title text ’
v As a program-to-system field: &field-name
The field-name specified must exist in the window record and must be defined as a character field with
usage P.
Notes:
1. A GRAPHIC literal should not be used for the title-text parameter.
2. If the title characters are blanks, then a blank title will be displayed.
3. If the title characters are nulls, then no title will be displayed.
The title-text-color specifies the color of the title text on a color display. The parameter is specified as an
expression of the form (*COLOR value).
The valid values for the title-text-color parameter are:
Value Meaning
BLU
Blue
GRN
Green
WHT
White
RED
Red
TRQ
Turquoise
YLW
Yellow
PNK
Pink
If the title-text-color parameter is not specified, it is set to the color of the border as default. The
parameter is ignored if it is specified for a window on a noncolor display.
The title-text-display-attribute specifies the display attributes of the title text. The parameter is specified
as an expression in the form (*DSPATR [value1 [value2 [value3...]]]). If more than one DSPATR is used, they
are combined to form one DSPATR that is used for the title text.
The valid values for the title-text-display-attribute values are:
Value Meaning
BL
Blink
CS
Column separator
HI
High intensity
DDS for display files
253
ND
Nondisplay
RI
Reverse image
UL
Underline
If the title-text-display-attribute parameter is not specified, it is set to the text attribute of the border as
default.
If neither the title-text-color nor title-text-display-attribute parameter is specified, the window border will
flow up to the first character of the window title and resume immediately after the last character. If either
parameter is specified, there will be a space immediately before and after the window title.
The *CENTER/*LEFT/*RIGHT parameter specifies whether the window title should be aligned to the
CENTER, LEFT or RIGHT of the window border. If not specified, the window title will be aligned in the
CENTER of the window border if the next parameter is *TOP or to the LEFT of the window border if the
next parameter is *BOTTOM.
The *TOP/*BOTTOM parameter specifies if the text should be imbedded in the top or bottom border. If
not specified, the text will be placed in the top border.
Notes:
v Not all controllers support alignment. On those controllers that do not, the title is centered.
v If *BOTTOM is specified on an enhanced controller that does not support text in the bottom
windows border, the WDWTITLE keyword is ignored.
v By specifying ENHDSP(*NO) on the CRTDSPF or CHGDSPF command, the *BOTTOM, *LEFT,
and *RIGHT parameters always work. However, all the other enhanced user interface functions
are lost.
Option indicators are valid for this keyword.
The WDWTITLE keyword can only be specified on a record that contains a WINDOW keyword (in the
definition format). If a WINDOW keyword that references another window is also specified, a warning
message is issued.
You can specify more than one WDWTITLE on a record. If you specify the WDWTITLE keyword more
than once at the record level, the parameters for the keywords that are in effect are combined. If different
values are specified for the same parameter, the parameter value of the first keyword is used.
Example
The following example shows how to specify the WDWTITLE keyword.
|...+....1....+....2....+....3....+....4....+....5....+....6....+....7....+....8
A
A
R RECORD1
WINDOW(6 15 9 30)
A N01
WDWTITLE((*TEXT &TTL1) (*COLOR GRN))
A 01
WDWTITLE((*TEXT &TTL1) (*COLOR RED))
A
FIELD1
5A B 2 2
A
FIELD2
20A B 8 5
A
TTL1
10A P
A
A
R RECORD2
WINDOW(8 20 9 30)
A
WDWTITLE((*TEXT &TTL2) +
A
(*COLOR YLW) +
A
(*DSPATR RI))
A
FIELD3
5A B 2 2
A
FIELD4
20A B 8 5
A
TTL2
10A P
A
254
System i: Programming DDS for display files
If the window defined by RECORD1 is written to the display, it will have whatever text is contained
within TTL1 imbedded within the top border of the window. If indicator 01 is set off, this text will be
green. If indicator 01 is set on, the text will be red.
When the window defined by RECORD2 is written to the display, the text contained within TTL2 will be
imbedded within the top border of the window. This text will be display in reverse image and yellow.
WINDOW (Window) keyword for display files
You use this record-level keyword to specify that the record format you are defining will be displayed
using a window.
A window is information that overlays part of the display. A window is typically smaller than the actual
workstation display, and can be positioned anywhere on the display.
The WINDOW keyword has two formats that can be used. These formats do the following tasks:
v Define a window by specifying the location and size of a window; this is known as a window
definition record.
v Refer to a record format name where the window location and size have been defined; this is known
as a window-reference record.
The format for the keyword is specified as follows:
WINDOW(start-line | &start-line-field start-position
| &start-position-field window-lines window-positions
[*MSGLIN | *NOMSGLIN])
[*RSTCSR | *NORSTCSR])
or
WINDOW(*DFT window-lines window-position
[*MSGLIN | *NOMSGLIN]
[*RSTCSR | *NORSTCSR])
Specify this format of the WINDOW keyword to define a window. The record format you are defining is
displayed in this window. Up to 12 windows can be shown on the display at one time. You can define
more than 12 windows in DDS, but only 12 can be displayed at the same time. However, if USRRSTDSP
is specified, the number of windows is unlimited. All fields defined in this record must fit within the
window.
The parameters specify the following items:
v The number or the name of a field containing the number of the line that is to contain the upper-left
corner of the window border. If a field name is specified, the field must exist in the record format and
the field must be defined as a signed numeric (data type S) and program-to-system (usage P) field with
length no greater than 3.
v The number or the name of a field containing the number of the position that is to contain the
upper-left corner of the window border. If a field name is specified, the field must exist in the record
format and the field must be defined as a signed numeric (data type S) and program-to-system (usage
P) field with length no greater than 3.
v The number of window-lines within the window. The window-lines can be no more than the available
lines for the display size minus 2. This is because the upper and lower window borders each occupy
one line.
The last window-line in a window is used as the message line and cannot contain any fields. For
example, if a WINDOW keyword is coded that specifies 10 window-lines for the window, only nine of
those lines can contain fields; the 10th line is the message line.
v The number of window-positions within the window. The window-positions can be no more than the
available positions for the display size minus 4. This is because both right and left borders need an
attribute byte inside the window. An attribute byte exists between the border character and the
DDS for display files
255
available window positions. For DBCS-capable windows, the system might need an additional 2 bytes
on each side of the window for a shift-out character and shift-in character for any underlying DBCS
fields.
v The MSGLIN parameter specifies if a window contains a message line. If this parameter is not
specified, the default is *MSGLIN. *NOMSGLIN moves the message out of the window and places it at
the bottom of the display or where the MSGLOC keyword defines the location. The last usable line in
the window is reserved for error messages; no records are displayed there. If the error message is
longer than the line, it is truncated to fit.
v The *RSTCSR parameter specifies if the user should be allowed limited function when the cursor is
outside of the window. When *NORSTCSR is specified and the cursor is outside of the window, the
user will be allowed to press a function key and have it function as if the cursor were within the
window. When the user specifies *RSTCSR on a controller that supports enhanced interface for
nonprogrammable workstations, the user will be able to move the cursor out of the window (except
with a mouse). For other workstations, when the user attempts to press a function key while the cursor
is outside of the window, the user will receive a beep and the cursor will be placed inside the window.
Control will not be returned to the application. *RSTCSR is the default.
The special value, *DFT, specified in place of the start-line and start-position parameters, indicates that
the system will determine the start line and start position of the window. The window is positioned
relative to the cursor location, similar to application help windows with variable starting locations. More
information about the rules the system uses to position the window can be found in the Application
Display Programming book
.
The second format for the WINDOW keyword is WINDOW(record-format-name).
Specify this format of the WINDOW keyword to display the record format you are defining in a window
that is defined on another record format.
The parameter specifies the record format name that has the window attributes specified. The record
format that uses this parameter is displayed in the window defined on the referenced record.
The field locations specified within a record format with the WINDOW keyword are relative to the first
usable window location in the upper-left corner of the window. The first usable window location is on
the first line below the upper border and two positions to the right of the left border (an ending attribute
byte occupies the first byte to the right of the border).
When a window is displayed, any records currently on the display are suspended if USRRSTDSP is not
specified. The suspended records can be visible around the sides of the window. Input is allowed only
within the active window. To remove the window from the display, a record can be written to an
underlying window or a non-window record must be overlaid on the display.
The WINDOW keyword is not allowed on a record format that has any one of the following keywords
specified:
ALWROL
ASSUME
MNUBAR
PULLDOWN
SFL
USRDFN
Note: The WINDOW keyword is allowed on a record with the SFLCTL keyword. This allows subfiles to
be displayed within a window.
WINDOW cannot be specified for the record format specified by the PASSRCD keyword.
The ERRSFL keyword is ignored for records that have the WINDOW keyword specified.
256
System i: Programming DDS for display files
The MSGLOC keyword is ignored for records that have the WINDOW keyword specified, unless
NOMSGLIN is specified.
If a record format has both a WINDOW and WDWBORDER keyword specified, specify the start-line,
start-position, window-lines, and window-positions parameters on the WINDOW keyword. The
WINDOW keyword should not specify the record-format-name parameter.
Option indicators are not valid for this keyword. However, display size condition names can be used.
Example 1
The following example shows how to specify the WINDOW keyword to define a window.
|...+....1....+....2....+....3....+....4....+....5....+....6....+....7....+....8
A
R WINDOW1
WINDOW(4 20 9 30 *NORSTCSR)
A
FIELD1
8A B 5 10
A
FIELD2
10A B 6 10
A
R WINDOW2
WINDOW(*DFT 9 30 *NOMSGLIN)
A
When the WINDOW1 record is displayed, the upper-left corner of the window border is on line 4
position 20 of the display. The lower-right corner of the border is located 10 lines lower than the upper
border and 33 positions to the right of the left border.
v Lower border line = upper border line + window-lines + 1
v Right border position = left border position + window-positions + 3
The FIELD1 field starts 2 lines lower than the upper border and 11 positions (the ending attribute byte
for the border character has been taken into account) to the right of the left border character (line 6,
position 31 on the display).
v Actual field line = upper border line + line number of field
v Actual field position = left border position + position of field + 1
The FIELD2 field starts 6 lines lower than the upper border and 11 positions to the right of the left border
(line 10, position 31 on the display).
If the cursor is moved outside of the window, the function keys will remain active.
When the WINDOW 2 record is displayed, the upper-left corner of the window border is at the cursor
position during run time. The message line does not appear inside the window, it appears at the bottom
of the display.
If the cursor is moved outside of the window, the function keys are inactive. If the user presses a function
key, they will receive a beep and the cursor will be place within the window.
Example 2
The following example shows how to use the WINDOW keyword to display multiple records in the same
window.
|...+....1....+....2....+....3....+....4....+....5....+....6....+....7....+....8
A
R WINDOW1
WINDOW(&LINE &POS 9 30)
A
USERID
8A O 2 10
A
LINE
2S 0P
A
POS
3S 0P
A
A
R RECORD1
WINDOW(WINDOW1)
A
OVERLAY
A
FIELD1
5A B 7 2
A
FIELD2
20A B 8 5
DDS for display files
257
A
A
A
A
A
A
R RECORD2
FIELD3
FIELD4
FIELD4
10A
8A
8A
B
B
B
2
8
8
WINDOW(WINDOW1)
2
5
5
When the WINDOW1 record is displayed, the upper-left corner of the border will be at the line and
position numbers specified by the LINE and POS fields. The lower-right corner of the border is located 10
lines lower than the upper border and 33 positions to the right of the left border.
The USERID field starts 2 lines lower than the upper border and 11 positions to the right of the left
border character.
If RECORD1 (from the previous example) is displayed, it is placed within WINDOW1. Its fields are
positioned with respect to the upper-left corner of the window. The fields from record WINDOW1 which
were on the display remain because the OVERLAY keyword was used on RECORD1 and the two records
do not overlap.
If RECORD2 (from the previous example) is displayed, it is also placed within WINDOW1. Its fields are
positioned with respect to the upper-left corner of the window. Because the OVERLAY keyword was not
used, the fields from records WINDOW1 and RECORD1 are removed from the window.
Example 3
The following example shows how to use the WINDOW keyword with a subfile.
|...+....1....+....2....+....3....+....4....+....5....+....6....+....7....+....8
A
R SFLDATA
SFL
A
NAME
20A B 4 5
A
RANK
10A B 4 27
A
SERIAL
8A B 4 38
A
A
R WINDOW1
SFLCTL(SFLDATA)
A
WINDOW(8 25 10 50)
A
SFLPAG(4)
A
SFLSIZ(17)
A
SFLDSP
A
SFLDSPCTL
A
2 5'Full Name'
A
2 27'Rank'
A
2 38'Serial Nbr'
A
When the WINDOW1 subfile control record is displayed, it and the subfile are displayed in a window.
The upper-left corner of the window border is at line 8, position 25 on the display. The lower-right corner
of the border is located on line 19, position 78.
The fields from both the subfile record and subfile control record are located with respect to the first
usable window position in the upper-left corner of the window. For example, the NAME field in the
SFLDATA record starts on the 4th window line and the 5th window position, which is the same as the
12th line on the display and the 31st position on the display.
Related reference
“USRRSTDSP (User Restore Display) keyword for display files” on page 246
You use this record-level keyword on a window record to specify that the application will manage the
display.
“OVERLAY (Overlay) keyword for display files” on page 172
You use this record-level keyword to specify that the record format that you are defining should
appear on the display without the entire display being deleted first.
258
System i: Programming DDS for display files
WRDWRAP (Word Wrap) keyword for display files
You use this file-level, record-level, or field-level keyword for continued-entry fields, or for named fields
so that they overflow onto subsequent display lines.
The keyword causes wrapping to occur at a blank in the data rather than at the end of the data line. It is
used to make long text fields easier to read. The default is for data to be wrapped at the end of the
physical line or continued-entry field segment.
This keyword can only be specified on fields that have a usage of input-only (I) or input/output (B).
This keyword has no parameters.
You cannot specify the WRDWRAP keyword on the following keyboard shifts:
v Signed Numeric (S)
v Numeric Only (Y)
v Digits Only (D)
v Numeric Only Character (M)
v
v
v
v
v
Floating Point (F)
DBCS Only (J)
DBCS Open (O)
DBCS Either (E)
Graphic (G)
WRDWRAP cannot be specified with the following keywords:
v AUTO(RAZ, RAB)
v
v
v
v
v
CHECK(MF, M10F, M11F, RB, RZ, RL, RLTB)
CHGINPDFT(MF)
DSPATR(OID, SP)
DUP
FLTFIXDEC
v IGCALTTYP
Option indicators are not valid for this keyword.
When WRDWRAP is used, the field length is not increased. Therefore, if too much data is entered the
word wrapping effect will be turned off.
Notes:
1. WRDWRAP is ignored on displays that are not attached to a controller that supports an
enhanced interface for nonprogrammable workstations.
2. WRDWRAP can be specified on a field that is contained on a single row. Although wrapping
will not occur, the character insert function of the field will still change.
3. Subfiles do not support WRDWRAP.
Example
The following example shows how to specify the WRDWRAP keyword.
|...+....1....+....2....+....3....+....4....+....5....+....6....+....7....+....8
A
R RECORD1
A
FIELD1
100A O 1 17
A
FIELD2
100A I 4 17WRDWRAP
DDS for display files
259
A
A
A
A
FIELD3
FIELD4
FIELD5
100A
100A
100A
B 7 17WRDWRAP
B 10 17
O 13 17
In this example, RECORD1 is defined with input, output, and both fields. FIELD2 and FIELD3 will have
the benefit of word wrap when the display is attached to a controller that supports an enhanced interface
for nonprogrammable workstation. FIELD4 will not have the benefits of word wrap.
Related information
Application Display Programming PDF
DDS for 3270 remote attachment
The 3270 remote attachment feature allows a 3270 Systems Network Architecture (SNA) controller or a
3274 emulating device to be attached to a System i model. Some applications for the 3270 that use data
description specifications (DDS) might require programming changes.
An operator at a 3277, 3278, or 3279 data entry keyboard can use most features and functions as a
similarly configured and authorized 5250 workstation. The attached unit has the same capabilities and
limitations as any remote 5251, with the following exceptions:
v No display attributes are seen on either a 3278 or a 3279 when the field is defined as a nondisplay
field.
v Numeric-only fields that are used for negative numbers act differently on the 3270 than on the 5250.
On the 3270, if the operator enters a negative number in the field, the sign occupies the first position of
the field followed by the number. This causes the maximum size of the field to decrease by 1 and
should be considered when you design the displays and fields.
v Results that cannot be predicted can occur when data is entered in an input field that is involved in a
page command, if any lines involved in the page are not of the same type field attributes and location.
v The following DDS keywords are ignored by 3270 support:
– AUTO (RA) and CHECK (ER)
– BLINK (cursor blink is controlled by keyboard for 3270)
– CHRID
– CHANGE
– LOWER or CHECK (LC) (lowercase is controlled by turning on the display for 3270)
–
–
–
–
CHECK (RL and RLTB)
DSPSIZ (other than 24 x 80)
LOCK
MSGLOC (set to row 24)
Note: For display devices configured as a 3278 Model 4, the MSGLOC keyword is set to display
messages on row 43.
v The following DDS display attributes are the only ones valid for 3270 Remote Attachment (except for
3277):
DSPATR
RI used for 3278 and 3279 CS used for 3278 and 3279 (changed to UL) UL used for 3278 and
3279 BL used for 3278 (determines color on 3279)
v During a write operation to the error line, the Enter key is defined as a Reset key and cannot be
mapped to any other function.
In addition, if a write operation is requested by the user application to display an error message, a
read operation should immediately follow the write operation for the remote 3270 display to allow
resetting of the error message. A read operation following a write operation of an error message should
260
System i: Programming DDS for display files
be used by call applications regardless of the type of target display. If a read operation does not
immediately follow the write error message requested by the user application, remote 3270 displays
might overlay the error message before it can be read by the user.
System/36 environment considerations for display files
The User Display Management (USRDSPMGT) keyword causes the record formats in the display file to
function similarly to System/36 SFGR display formats.
The SFGR-to-DDS conversion utility always generates the USRDSPMGT keyword. If you are defining a
DDS display file to be used in the System/36 environment, you should specify the USRDSPMGT
keyword.
.
For a description of operational differences, see the Application Display Programming book
Related reference
“USRDSPMGT (User Display Management) keyword for display files” on page 246
You use this file-level keyword to specify that all data written to the display is held until the data is
overwritten or cleared by using the CLRL keyword.
Keyword considerations for display files used in the System/36
environment
You cannot specify some keywords in display files that contain the USRDSPMGT keyword.
You cannot specify the following keywords in this kind of display file:
ASSUME
ERASE
ERRSFL
HLPCMDKEY
IGCCNV
KEEP
MNUBAR
PULLDOWN
PUTRETAIN
SFL
SFLCTL
SNGCHCFLD
In a file containing the USRDSPMGT keyword, the OVERLAY keyword is ignored.
The following keywords have a response indicator parameter. Because System/36 environment
applications do not support response indicators, you should not specify a response indicator on any of
these keywords in a file to be used in the System/36 environment. If you specify a response indicator for
any of these keywords in a file that contains the USRDSPMGT keyword, a warning message is issued.
BLANKS
CAnn
CFnn
CHANGE
CLEAR
DUP
ERRMSG
ERRMSGID
HELP
HLPRTN
HOME
PAGEDOWN
PAGEUP
PRINT
ROLLDOWN
ROLLUP
SETOF
SETOFF
VLDCMDKEY
If you specify a response indicator on the HELP keyword in a file containing the USRDSPMGT keyword,
an error message is issued.
Related tasks
“Defining a display file for DDS” on page 1
When you specify positional entries for display files, you need to follow some specific rules for filling
in positions 1 through 44 of the data description specifications (DDS) form.
DDS for display files
261
ALTNAME (Alternative Record Name) keyword
You use this record-level keyword to specify an alternative name for a record.
The alternative name can be specified for I/O operations when using program-described files. The syntax
of the alternative record name must be valid for the high-level language compiler in use.
The format of the keyword is:
ALTNAME('alternative-name')
The length of the alternative name is 1 to 8 characters. The first character of the name must not be an
asterisk.
The alternative name must be different from all other names and from all DDS record names (positions
19 through 28) in the file. When a duplicate name is found, an error is issued on the record name or
alternative record name.
ALTNAME is not allowed on subfile records (SFL keyword).
Option indicators are not valid for this keyword.
The following example shows how to specify the ALTNAME keyword.
|...+....1....+....2....+....3....+....4....+....5....+....6....+....7....+....8
A
R RECORD1
ALTNAME('R( 2).a')
A
The alternative name for RECORD1 is ’R( 2).a’.
CHANGE record-level keyword
You use this record-level keyword to indicate that on an input operation, the record is to be returned to
the application program only if the user has changed the record.
If the user enters data into any input-capable field, all of the input-capable fields in the record will be
returned. If the user does not enter data into any field, the input-capable fields will be returned
initialized by the compiler.
This keyword has no parameters.
This format of the CHANGE keyword is allowed only in files containing the USRDSPMGT keyword.
Option indicators are not allowed with this keyword.
For files that are used by the i5/OS operating system applications (with or without the USRDSPMGT
keyword), use the format of the CHANGE keyword.
Related reference
“CHANGE (Change) keyword for display files” on page 44
You use this record-level or field-level keyword to set on the specified response indicator for an input
operation.
HELP and HLPRTN keyword
In a file with the USRDSPMGT keyword, the HELP keyword alone will not return control to the
application program. HLPRTN must be specified to return control to the application program.
If you specify a response indicator on the HELP keyword in a file containing the USRDSPMGT keyword,
an error message is issued.
262
System i: Programming DDS for display files
MSGID keyword
You use this field-level keyword to allow an application program to identify, at program run time, the
message description that contains text for a named field.
You can specify the MSGID keyword in either of the following formats:
MSGID(message-identifier [library-name/]message-file)
MSGID(*NONE)
You can specify the message-file parameter in one of the following forms:
v &field3
where the field3 length is two (2).
The field name must exist in the same record as the MSGID field, and the field must be defined as a
character field with usage H, P, B, or O.
You should, for this form only, specify only special values for the file parameter. You cannot specify a
library.
The special values are: U1, U2, P1, P2, M1, and M2. If the specified value is not one of these special
values, U1 is used. See Table 15 for more information about these values.
v Special values for message-file:
– *USR1
– *USR2
– *PGM1
– *PGM2
– *SYS1
– *SYS2
When you code a special value for the message-file, the library parameter is not allowed and the
library is set to *LIBL as default. See Table 15 for more information about these special values.
The following table describes the meaning of the special file values for the MSGID keyword.
Table 15. Special values on MSGID keyword
DDS special value
Length 2 field value
Message text retrieved
*USR1
U1
First level text from message file
USR1
*USR2
U2
Second level text from message file
USR2
*PGM1
P1
First level text from message file
PGM1
*PGM2
P2
Second level text from message file
PGM2
*SYS1
M1
First level text from message file
SYS1
*SYS2
M2
Second level text from message file
SYS2
For information about using message retrieval, see the Application Display Programming book
.
The *NONE parameter indicates that no message text is displayed.
The following example shows how to specify the MSGID keyword.
DDS for display files
263
|...+....1....+....2....+....3....+....4....+....5....+....6....+....7....+....8
A
R RECORD1
A
MSGFIELD1
40A B 02 10MSGID(CPD0001 *USR1)
A
MSGFIELD2
10A O 02 60MSGID(&MSGIDNUM &MSGFILENM);
A
MSGFIELD3
80A B 02 60
A 99
MSGID(USR &MSGNBR +
A
&MSGFILENM);
A
MSGID(*NONE)
A
MSGIDNUM
7A P
TEXT('Message id')
A
MSGFILENM
2A P
TEXT('Message file name')
A
MSGNBR
4A P 07 01TEXT('Message number')
A
When RECORD1 is displayed:
v MSGFIELD1 contains the first 40 characters of the message CPD0001 from the message file USR1.
Because the field is input/output (usage B), the value of the field can be changed by the user.
v MSGFIELD2 contains the first 10 characters of the message identified by the fields MSGIDNUM and
MSGFILENM. Values for MSGIDNUM (the message identifier) and MSGFILENM (the message file)
must be set in the program before the display of RECORD1. Because MSGFIELD2 is an output-only
field (usage O), it cannot be used in the program.
v If option indicator 99 is on, MSGFIELD3 contains the first 80 characters of the message identified by
the prefix USR, the message number set in field MSGNBR, and the message file set in field
MSGFILENM. If option indicator 99 is off, MSGFIELD3 does not contain any message text.
Related reference
“MSGID (Message Identifier) keyword for display files” on page 167
You use this field-level keyword to allow an application program to identify, at program run time, the
message description that contains text for a named field.
PRINT(*PGM) keyword
How the PRINT key is handled for a display file with the PRINT(*PGM) and USRDSPMGT keywords
specified is determined by how the program that is reading data from the display file is compiled and
coded.
If the program is compiled with a System/36-compatible compiler (RPGII or COBOL) and the program is
coded to handle the Print key exception, the program is given control when the Print key is pressed. If
the program is coded not to handle the Print key exception, the screen image is printed.
If the program is compiled with an i5/OS compiler (RPG III, RPG IV, or COBOL), the program is always
given control when the Print key is pressed. If the program does not handle the Print key exception, it
acts as if the Enter key was pressed.
RETKEY (Retain Function Keys) and RETCMDKEY (Retain Command Keys)
keywords
You use these record-level keywords to indicate that function keys, command function (CFnn) keys, or
command attention (CAnn) keys, which are enabled on a display, should be retained when the record
you are defining is displayed.
In most cases, the keys enabled on the display are those which were specified on the last output
operation. Additionally, the i5/OS operating system automatically retains valid keys when a record
format sends no data to the display.
Note that if the record previously displayed is defined in another display file, the keys enabled for that
record will not be retained when the record you are defining is displayed.
These keywords have no parameters.
Related reference
264
System i: Programming DDS for display files
“CAnn (Command Attention) keyword for display files” on page 41
You use this file-level or record-level keyword to specify that the function key specified in the
keyword (CA01 through CA24) is available for use.
“CFnn (Command Function) keyword for display files” on page 43
You use this file-level or record-level keyword to specify that the function key specified in the
keyword (CF01 through CF24) is available for use.
RETKEY keyword:
RETKEY indicates to retain any CLEAR, HELP, HLPRTN, HOME, PAGEDOWN, PAGEUP, PRINT,
ROLLDOWN, and ROLLUP keywords when the record is displayed.
You cannot specify RETKEY with a CLEAR, HELP, HOME, PAGEUP, PAGEDOWN, ROLLDOWN, or
ROLLUP keyword on the file level or on this record format. PRINT is not allowed on the same record
format with RETKEY.
The HLPRTN and PRINT keywords are allowed at the file level with RETKEY. If option indicators are
specified on either HLPRTN or PRINT, the state of the indicators when the current record is displayed
determines whether the keyword is active.
If you specify HLPRTN on the same record format with RETKEY, the HLPRTN function will not be
retained from the previous record.
RETCMDKEY keyword:
RETCMDKEY indicates whether to retain CAnn or CFnn keys when the record is displayed.
You cannot specify the CAnn or CFnn keywords with the RETCMDKEY on the file level or on this record
format. You cannot specify any CAnn, CFnn, SFLDROP, SFLENTER, or SFLFOLD keywords on the record
being defined.
Considerations for specifying RETKEY and RETCMDKEY keywords:
These rules must be considered when you specify the RETKEY and RETCMDKEY keywords.
v The file must specify a separate indicator area (INDARA keyword).
v RETKEY and RETCMDKEY are ignored on the first output operation after a file is opened. The retain
function is valid only between record formats in the same display file.
v The response indicator of the VLDCMDKEY keyword is set by the i5/OS program according to the
current valid command keys, including the keys retained when you specify the RETKEY and
RETCMDKEY keywords.
v Neither keyword is allowed on a subfile format (SFL keyword) or on a user-defined record (USRDFN
keyword).
v You cannot specify either RETKEY or RETCMDKEY in a file that contains the ALTHELP, ALTPAGEUP,
or ALTPAGEDWN keyword.
Option indicators are not valid for these keywords.
Example
The following example shows how to specify the RETKEY and RETCMDKEY keywords.
|...+....1....+....2....+....3....+....4....+....5....+....6....+....7....+....8
A
INDARA
A
R RECORD1
CFO1(01 'EXIT SCREEN')
A
CFO2(02 'SET ON IN02')
A
ROLLUP(03)
DDS for display files
265
A
A
A
A
A
A
A
A
A
A
A
08
R RECORD2
FIELD1
R RECORD3
4A
FIELD1
10A
CLEAR(03 'CLEAR KEY')
1 3'COMPANY NAME'
1 25'CF01 TO EXIT'
RETKEY
RETCMDKEY
OVERLAY
B 5 5
RETKEY
CF01(90 'ALTERNATE CF01')
B 7 5
The records are displayed in the following order: RECORD1, RECORD2, RECORD3.
When RECORD1 is displayed, CF01, CF02, Clear, and Page Up keys are activated. The same keys are
valid for RECORD2, because RETKEY and RETCMDKEY are specified. Because RECORD3 specifies
RETKEY, the Clear and Page Up keys are valid. CF01 has been redefined for this record. CF02 is not valid
for this record.
Note: The retain function does not require the record format to be displayed. (RECORD3 uses function
keys defined in RECORD1, but because no OVERLAY keyword is specified in RECORD3, the
display is erased before RECORD3 is displayed.)
USRDSPMGT (User Display Management) keyword
You use this file-level keyword to indicate that this display file should be processed with System/36
environment functions.
This keyword has no parameters.
You cannot use USRDSPMGT in display files containing any of the following keywords:
ASSUME
ERASE
HLPCMDKEY
IGCCNV
KEEP
PUTRETAIN
SFL
SFLCTL
In a file containing the USRDSPMGT keyword, the OVERLAY keyword is ignored.
Option indicators are not valid for this keyword.
The following example shows how to specify the USRDSPMGT keyword.
|...+....1....+....2....+....3....+....4....+....5....+....6....+....7....+....8
A
USRDSPMGT
A
R RECORD
A
FIELD1
A
Unicode considerations for display files
Unicode is a universal encoding scheme for written characters and text that enables the exchange of data
internationally. Two transformation formats, UTF_16 and UCS_2, of Unicode are supported with DDS.
A Unicode field in a display file can contain UCS-2 or UTF-16 data. Unicode data is composed of code
units, which represent the minimal byte combination that can represent a unit of text.
266
System i: Programming DDS for display files
There are two transformation formats (encoding forms) of Unicode that are supported with DDS:
v UTF-16 is a 16-bit encoding form designed to provide code values for over a million characters and a
superset of Unicode. UTF-16 data is stored in graphic data types. The CCSID value for data in UTF-16
format is 1200.
A UTF-16 code unit is 2 bytes in length. A UTF-16 character can be 1 or 2 code units (2 or 4 bytes) in
length. A UTF-16 data string can contain any character including UTF-16 surrogates and combining
characters.
v UCS-2 is the Universal Character Set coded in 2 octets, which means that characters are represented in
16 bits per character. One code unit is used in this topic to describe the size of a UCS-2 character.
UCS-2 data is stored in graphic data types. The CCSID value for data in UCS-2 format is 13488.
UCS-2 is a subset of UTF-16 and can no longer support all of the characters defined by Unicode. UCS-2
is identical to UTF-16 except that UTF-16 also supports the combining of characters and surrogates. If
you do not need support for the combining of characters and surrogates, you can choose to continue to
use the UCS-2 format.
Unicode data is not supported on display devices that currently support the 5250 data stream. Therefore,
conversions between the Unicode data and EBCDIC are necessary during input and output. On output,
the Unicode data is converted to the CCSID of the device. On input, the data is converted from the
device CCSID to the Unicode CCSID.
Because the device CCSID, which is determined from the device configuration, determines what the
Unicode data is converted to, the converted data can appear differently on different devices. For example,
a Unicode code unit that maps to an SBCS character is displayed as a DBCS replacement character on a
graphic-DBCS-capable device. On a DBCS-capable or an SBCS-capable device, the code unit appears as an
SBCS character. A Unicode code unit that maps to a DBCS character is displayed as a graphic-DBCS
character on a graphic-DBCS-capable device. On a DBCS device, a DBCS character is displayed and
bracketed (enclosed in shift-out and shift-in characters). An SBCS replacement character is displayed on
an SBCS device.
It is also suggested that all fields that are capable of Unicode are initialized in the output buffer before
writing the fields to the screen. Unpredictable results might occur if default initialization is allowed to
take place.
Positional entry considerations for display files that use Unicode data
Be aware of these positional entry considerations for display files that use Unicode data. Positions not
mentioned have no special considerations for Unicode.
Length (positions 30 through 34)
Specify the length of the field in these positions. The length of a field containing Unicode data can range
from 1 through 16 381 code units.
When determining the program length of a field containing Unicode data, consider the following rules:
v Each Unicode code unit is 2 bytes long.
v The program length of the field is specified in number of Unicode code units. For example, a field
containing 3 Unicode code units has 6 bytes of data.
v The field’s default display length is equal to the field’s program length or 2 times the number of
Unicode code units.
v After converting between Unicode data and EBCDIC, the resulting data can be equal to, longer or
shorter than the original length data before the conversion, depending upon the CCSID of the device.
For example, 1 Unicode code unit is composed of 2 bytes of data. That code unit might convert to 1
SBCS character composed of 1 byte of data, 1 graphic-DBCS character composed of 2 bytes of data, or
1 bracketed DBCS character composed of 4 bytes of data.
DDS for display files
267
v The field’s display length can be specified separately from the program length by using the
alternate-field-length parm on the CCSID keyword.
Data type (position 35)
The only valid data type for Unicode data is the G data type.
G (Graphic)
Type G in combination with the CCSID keyword to specify this field contains Unicode data.
Normally, by specifying G, the field contains graphic-DBCS data. In combination with the CCSID
keyword, the field now contains Unicode data. On output, the data is mapped to corresponding
characters in the CCSID that the device is configured as. On input, the data is mapped to
corresponding Unicode code units.
Decimal positions (positions 36 and 37)
Leave these positions blank when using Unicode data.
Related reference
“Valid entries for display files” on page 13
These entries are valid for display files.
Keyword considerations for display files that use Unicode data
(positions 45 through 80)
The DFT keyword can contain SBCS, bracketed-DBCS, or bracketed-DBCS-graphic character strings when
specified on a Unicode-capable field.
No validity checking is allowed for a field capable of Unicode.
The CCSID keyword specifies that a G-type field supports Unicode data instead of DBCS-graphical data.
CCSID (Coded Character Set Identifier) keyword
You use this file-, record-, or field-level keyword to specify that a G-type field supports Unicode data
instead of DBCS-graphical data. Like DBCS-graphic characters, Unicode code units are two bytes long.
The format of the keyword is:
CCSID(Unicode-CCSID | &Unicode-CCSID-field | *REFC
[field-display-length | *MIN | *LEN display-positions])
The Unicode-CCSID parameter is required. Use the Unicode-CCSID parameter to specify a CCSID that
uses a Unicode encoding scheme for this field. The Unicode-CCSID parameter can be specified either as a
number up to 5 digits long or as a program-to-system field. You must define the program-to-system field
with a length of 5 and with the S data type.
A special value of *REFC can be specified instead of a Unicode-CCSID value. It is valid only on reference
fields, and the referenced field must be coded with a CCSID keyword specifying a Unicode-CCSID value.
Normally, the display file CCSID keyword will override any CCSID keyword attributes taken from the
referenced field. If *REFC is specified, the Unicode-CCSID value is taken from the referenced field.
The field-display-length parameter is optional and is valid only when the CCSID keyword you specify it
at the field level. You specify the field-display-length as the number of Unicode code units.
When Unicode data is involved in an output operation, the data is converted from the associated
Unicode CCSID to the CCSID of the device. Generally, the length of the data will change when this
conversion occurs. Therefore, you can use the field-display-length value to specify a displayed field
268
System i: Programming DDS for display files
length that is different from the default displayed field length. The default displayed field length of a ’G’
data type field is twice the number of code units that are specified for the field length.
The field-display-length value can help avoid truncation of field data when the data length will be longer
after conversion than the default displayed field length. The field-display-length value can also help
increase the available line space by limiting the displayed field length when the data length will be
shorter after conversion. The field length will still be used to define the field’s output buffer length.
For example, a display file contains the following line:
FLD1
10G
B
2
2 CCSID(X Y)
v X is the Unicode-CCSID associated with the field data. Y is the field-display-length of this field. If you
do not specify Y, then FLD1’s length on the screen is 20 single-byte characters (twice the number of
code units specified on the field length).
v If you know that the Unicode data is constructed from single byte data, then you can specify the
field-display-length, Y, as 5 Unicode code units. FLD1 will have a length of 10 single byte characters on
the screen (twice the number of code units that are specified on the field-display-length).
v If you know that the Unicode data is constructed from double-byte data, then you can specify the
field-display-length, Y, as 11 Unicode code units. FLD1 will have a length of 22 single byte characters
on the screen. This will allow space for the shift-out and shift-in characters.
A special value, *MIN, can be specified instead of a field-display-length. This value will be used to
specify a field length defined in terms of display positions. This value causes the field length on the
screen to be equal to the number of Unicode code units defined in the DDS.
A special value, *LEN, along with a display-positions value can be specified instead of a
field-display-length. This value is used to specify a field length defined in terms of display positions. This
value causes the field length on the screen to be equal to the display-positions value.
If the CCSID keyword is specified at both the field-level and the record- or file-level, the field-level
keyword takes precedence.
On output, field data that is longer than the specified field length is truncated. On input, if too many
characters were entered into the Unicode field, then the field is reverse imaged and an error appears on
the error line stating too many characters were entered. You need to press reset and correct the field. The
maximum number of characters to enter is conveyed in the error message.
The CCSID keyword can be specified with all of the following field level keywords:
ALIAS
AUTO(RA)
BLANKS
CHANGE
COLOR
DFT
DLTCHK
DSPRL
DUP
CHECK(FE)
CHGINPDFT
DFTVAL
DSPATR(BL)
DSPATR(CS)
DSPATR(HI)
DSPATR(MDT)
DSPATR(ND)
DSPATR(PC)
DSPATR(PR)
DSPATR(RI)
DSPATR(UL)
ENTFLDATR
ERRMSG
ERRMSGID
FLDCSRPRG
INDTXT
OVRATR
OVRDTA
PUTRETAIN
REFFLD
SFLCSRPRG
TEXT
Option indicators are not valid for this keyword.
Example
The following example shows how to specify the CCSID keyword.
DDS for display files
269
|...+....1....+....2....+....3....+....4....+....5....+....6....+....7....+....8
00010A
CCSID(13488)
00020A
R RECORD1
00030A
FIELD1
30G
00040A
FIELD2
10G
CCSID(61952 6)
00050A
R RECORD2
CCSID(1200)
00060A
FIELD3
20G
00070A
R RECORD3
00080A
FIELD4
10G
CCSID(61952 *MIN)
00090A
FIELD6
10G
CCSID(1200 *LEN 8)
FIELD1 is assigned a CCSID value of 13488. FIELD2 is assigned a CCSID value of 61952 and has a field
length of 6 Unicode code units long (12 SBCS characters). FIELD3 is assigned a CCSID value of 1200.
FIELD4 will use 10 display positions on the screen. FIELD6 will use 8 display positions on the screen.
Double-byte character set considerations for DDS
Be aware of these double-byte character set (DBCS) considerations for the positional entries and keyword
entries for display files, as well as general considerations for using DBCS data in display files.
The functions described in these topics are supported on both DBCS and non-DBCS systems.
Related concepts
General considerations for using DBCS text with DDS files
Positional entry considerations for display files that use DBCS
When you create display files that use double-byte character set (DBCS) characters, be aware of DBCS
considerations for the length, data type, and decimal positional entries on display files.
Positions that are not mentioned have no special considerations for DBCS.
Length (positions 30 through 34)
The length of a field containing bracketed-DBCS data can range from 4 through 32 763 bytes. The length
of a DBCS-graphic field can range from 1 through 16 381 characters.
When determining the length of a DBCS field, consider the following rules:
v Each DBCS character is 2 bytes long.
v For DBCS-graphic fields, the length of the field is specified in number of DBCS characters.
v Include both shift-control characters in the length of the field for fields with a data type of J, E, or O.
Together, these characters are 2 bytes long.
v Fields specified with the J or E data type or keyboard shift must have an even length.
For example, a bracketed-DBCS field that contains up to 3 DBCS characters, 1 shift-in character, and 1
shift-out character, has 8 bytes of data:
(3 characters x 2 bytes) + (shift-out + shift-in) = 8
A DBCS-graphic field that contains up to 3 DBCS characters has 6 bytes of data:
(3 characters x 2 bytes) = 6
Data type (position 35)
You can specify the data type in this position by typing J, E, O, G.
J (Only)
Type J to specify this field as a DBCS-only field.
The display station automatically inserts shift-control characters in fields specified with this data
type.
270
System i: Programming DDS for display files
If you specify J, you must specify an even number for the field length (positions 30 through 34).
E (Either)
Type E to specify this field as a DBCS-either field.
You can type either DBCS or alphanumeric characters in the field. The type of data typed in the
first position of the field determines the type of data that can be typed in the remainder of the
field. If the field is empty, the system assumes that alphanumeric data will be typed in. To change
the field so DBCS data can be typed, position the cursor in the field and put the keyboard in
DBCS mode.
If the field contains DBCS data, the display station automatically inserts shift-control characters.
If you specify E, you must specify an even number for the field length (positions 30 through 34).
O (Open)
Type O to specify this field as a DBCS-open field. You can type both DBCS and alphanumeric
characters in this field. Use shift-control characters to distinguish DBCS data from alphanumeric
data.
If the field contains DBCS data, the system does not ensure that the data is enclosed between
shift-control characters.
If you specify O, you can specify either an even or an odd number for the field length (positions
30 through 34).
G (Graphic)
Type G to specify this field as a DBCS-graphic field. Data typed in this field does not contain
shift-control characters.
If you specify G, you must specify the number of DBCS characters for the field length (positions
30 through 34).
Related reference
“Valid entries for display files” on page 13
These entries are valid for display files.
Decimal positions (positions 36 and 37)
Leave these positions blank when using DBCS data.
Keyword considerations for display files that use DBCS
Some DDS keywords should be avoided in double-byte character set (DBCS) data fields, and others
should be used with caution.
Do not use the following DDS keywords with DBCS data fields (the data type specified in position 35 is
J, E, O, or G):
AUTO(RAZ)
BLKFOLD
CHECK(M10)
CHECK(M10F)
CHECK(M11)
CHECK(M11F)
CHECK(RL)
CHECK(RLTB)
CHECK(RZ)
CHECK(VN)
CHECK(VNE)
CHRID
DATE
DLTEDT
DSPATR(OID)
DSPATR(SP)
EDTCDE
EDTWRD
FLTFIXDEC
FLTPCN
MSGCON
REFSHIFT
SFLMSGKEY
SFLPGMQ
SFLRCDNBR
SFLROLVAL
TIME
Do not use the CHECK(LC) and LOWER keywords on DBCS-only fields (J specified in position 35).
Do not use the IGCALTTYP, IGCANKCNV, CHECK(LC), and LOWER keywords on DBCS-graphic fields
(G specified in position 35).
DDS for display files
271
The following DDS keywords can be used in files containing DBCS data only when the function
indicated by the keyword is available on the display device or with the type of data used. However, DDS
does not apply record- and file-level keywords to DBCS fields.
CHECK(RL)
CHECK(RLTB)
COLOR
DSPSIZ(*DS4)
DSPATR(SP)
DSPMOD
ERASEINP(*ALL)
MDTOFF(*ALL)
Related reference
“DDS keyword entries for display files (positions 45 through 80)” on page 29
You type the keyword entries that define display files in positions 45 through 80 (functions).
CNTFLD (Continued-Entry Field) keyword
You use this field-level keyword to define a field as a continued-entry field.
Continued-entry fields are sets of associated entry fields that are treated by the workstation controller as
a single field during field-data entry and editing. If the display device is not attached to a controller that
supports an enhanced interface for nonprogrammable workstations, each segment of the continued entry
field is treated separately when editing is performed on the field.
The format of the keyword is:
CNTFLD(width of column)
One parameter must be specified.
DBCS considerations
DBCS data types have the following restrictions:
J
The width of each continued-entry field segment must be an even number of at least 4 bytes.
E
The width of each continued-entry field segment must be an even number of at least 4 bytes.
O
The width of each continued-entry field segment must be at least 4 bytes wide.
G
The width of each continued-entry field segment must be an even number of at least 4 bytes.
Special consideration must be taken when defining the length of the DBCS continued-entry field to
account for the SO/SI character pairs that must bracket the DBCS data on each segment of the
continued-entry field. The following total field lengths are required to ensure that the field data fits into
DBCS continued-entry fields:
J or E (with DBCS data)
Data Length + (Number of segments - 1) * 2
O
Data Length + (Number of segments - 1) * 3
G or E (with SBCS data)
Data Length
Note: The (Number of segments - 1) * 2 portion of the calculation in the first equation allows for the
SO/SI sets that must bracket the DBCS data on the segments of the continued-entry field after the
first segment.
The (Number of segments - 1) * 3 portion of the calculation in the second equation allows for the SO/SI
sets that must bracket the DBCS data on the segments of the continued-entry field after the first segment.
Additional consideration is made for the possibility that a NULL must be placed at the end of a segment
wherever a DBCS character is split.
272
System i: Programming DDS for display files
Note: WRDWRAP cannot be used on DBCS continued-entry fields.
GRDATR (Grid Attribute) keyword
You use this file-level or record-level keyword to define the default color and line type attributes for the
grid structure.
The format of the keyword is:
GRDATR([(*COLOR grid-line-color | &Color-field)]
[(*LINTYP grid-line-attribute | &Lintype-field)])
P-fields can be used to define or change the attributes at run time when this keyword is used at the
record-level.
Valid parameter and p-fields values are:
Table 16. Valid color values
COLOR
Meaning
Program field value
BLU
Blue
X’01’
GRN
Green
X’02’
CYAN
Cyan
X’03’
RED
Red
X’04’
VLT
Violet
X’05’
YLW
Yellow
X’06’
WHT
White
X’07’
GRY
Gray
X’08’
LBLU
Light blue
X’09’
LGRN
Light green
X’0A’
LTRQ
Light Turquoise
X’0B’
LRED
Light red
X’0C’
LVLT
Light violet
X’0D’
LYLW
Light yellow
X’0E’
HWHT
High-intensity white
X’0F’
BLK
Black
X’10’
NONE
Default value of the display
X’FF’
Line type
Meaning
Program field value
SLD
Solid
X’00’
THK
Thick
X’01’
DBL
Double
X’02’
DOT
Dot
X’03’
Note: The default color is white.
Table 17. Valid line types
DSH
Dash
X’08’
THKDSH
Thick dash
X’09’
DBLDSH
Double dash
X’0A’
NONE
Default value of the display
X’FF’
DDS for display files
273
Table 17. Valid line types (continued)
Line type
Meaning
Program field value
Note: The default line type is solid.
If a p-field is specified for either the COLOR or LINTYP parameter, the field must exist in the record
format. The field is defined as data type A, usage P, and length of 1.
Grid line support requires DBCS equipment. This equipment should have the capability of calling
Japanese DOS.
Option indicators are valid for this keyword.
Example
The following example shows how to specify the GRDATR keyword.
|...+....1....+....2....+....3....+....4....+....5....+....6....+....7....+....8
A
GRDATR((*COLOR WHT) (LINTYP SLD))
A
R GRDREC1
GRDRCD
A
GRDATR((*COLOR BLU) (LINTYP DSH))
A
GRDBOX((*POS (2 2 10 70 )) +
A
(*TYPE PLAIN)
A
A
R GRDREC2
GRDRCD
A
GRDBOX((*POS (4 4 5 45)) +
A
(*TYPE PLAIN)
A
GRDLIN((*POS (6 4 20)) +
A
(*TYPE LOWER) +
A
(*COLOR RED) (*LINTYP DBL))
A
When the GRDREC1 record is written, the TYPE PLAIN box defined by the GRDBOX keyword within
the GRDREC2 record will be displayed with a blue dash lines. These attributes are defined on the
GRDATR keyword on the GRDREC1 record.
When the GRDREC2 record is written, the TYPE PLAIN box defined by the GRDBOX keyword within
the GRDREC2 record will be displayed with a white solid line. These attributes are defined on the
GRDATR keyword at the file level. The GRDLIN defined within GRDREC2 will be a red double line. The
attributes defined on the GRDBOX or GRDLIN keyword override any GRDATR keyword on the file- or
record-level.
GRDBOX (Grid Box) keyword
You use this record-level keyword to define the shape, positioning, and attributes for the box structure.
This keyword defines whether the box is erased, displayed, or not processed.
The format of the keyword is:
GRDBOX((*POS ([*DS3] [*DS4]
start-row | &start-row-field
start-column | &start-column-field
depth | &depth-field
width | &width-field));
[(*TYPE type of box
[horizontal rule | &hrule-field]
[vertical rule | &vrule-field])]
[(*COLOR color of box | &color-field)]
[(*LINTYP line type of box | &lintyp-field)]
[(*CONTROL | &control-field)]
274
System i: Programming DDS for display files
The *POS parameter is a required parameter. This parameter describes the position and size of the box.
When coding *DS3 or *DS4 within the *POS parameter, you can have 2 different start row, start column,
and length values depending on the display size being used. DSPSIZ keyword must be coded on the file
level.
The *TYPE parameter is a required parameter. The horizontal and vertical rule values define the number
of character spaces between each rule. For example, if a *TYPE VRT box is defined with a width of 21
columns and a rule value of 3 columns, there will be 6 vertical lines within the box. If the rule value is
not an even multiple of the width or depth, the odd space rule will occur at the right side or the bottom
of the box. The default for this parameter is PLAIN.
The horizontal or vertical rule values can be defined using program-to-system fields. If a field name is
specified, the field must exist in the record format. The field is defined as a data type S, usage P, field
length of 3, and zero decimal positions.
The *COLOR and *LINTYP parameters define the color and attributes of the box. P-fields can be used to
define or change the attributes at run time.
For more information about the *COLOR and *LINTYP parameters, see “GRDATR (Grid Attribute)
keyword” on page 273.
If *NONE is defined by the GRDBOX keyword, the color set by the GRDATR keyword will be used.
If a p-field is specified for either the COLOR or LINTYP parameter, the field must exist in the record
format. The field is defined as data type A, usage P, and length of 1.
The *CONTROL parameter specifies whether this GRDBOX is to be displayed, erased from the screen, or
ignored (similar to optioning off the keyword). The field must exist in the record format and must be
defined as data type S, usage P, and length of 1. If the p-field is set to 0, the grid line will be displayed. If
the p-field is set to 1, the GRDBOX keyword will not be processed. If the p-field is set to -1, the grid line
record currently shown will be cleared. If the p-field is set to something other than the defined values,
then the default 0 will be used.
Grid line support requires DBCS equipment. This equipment should have the capability of calling
Japanese DOS.
Option indicators are valid for this keyword.
Example
The following example shows how to specify the GRDBOX keyword.
|...+....1....+....2....+....3....+....4....+....5....+....6....+....7....+....8
A
DSPSIZ(*DS3 *DS4)
A
GDRATR((*COLOR WHT) (*LINTYP SLD))
A
R GRDREC1
GRDRCD
A
GRDATR((*COLOR BLU) (LINTYP DSH))
A
GRDBOX(*POS (2 5 10 70 ) (*TYPE PLAIN))
A
A
R GRDREC2
GRDRCD
A 90
DSPMOD(*DS4)
A
GRDBOX((*POS (*DS3 5 5 18 70) +
A
(*DS4 5 5 19 120)) (*TYPE PLAIN))
A
GRDBOX((*POS (*DS3 5 5 18 70) +
A
(*DS4 7 7 3 103)) (*TYPE VTR 10) +
A
(*CONTROL &CNTL1));
A
A
GRDBOX((*POS (*DS3 12 7 6 53) +
A
(*DS4 127 6 103)) +
A
(*TYPE HRZ 2) +
DDS for display files
275
A
A
A
A
A 95
A
A
A
A
A
A
A
A
A
A
A
A
A
A
A
A
(*COLOR RED) (*LINTYP &LNTP1); +
(*CONTROL &CNTL2));
GRDBOX((*POS (&SCROW1 &SCOL1 &DPTH1 +
&WDTH1)); +
(*TYPE HRZVRT &HRUL1 &VRUL1); +
(*COLOR &CLR1); +
(*CONTROL &CNTL3));
CNTL1
CNTL2
CNTL3
LNTP1
CLR1
SROW1
SCOL1
DPTH1
WDTH1
HRUL1
VRUL1
1S
1S
1S
1A
1A
3S
3S
3S
3S
3S
3S
0P
0P
0P
P
P
0P
0P
0P
0P
0P
0P
When the GRDREC1 record is written, the plain box defined at position row 2, column 4, depth of 10
rows, and width of 70 columns will be displayed. The box will have a color of blue with dash lines.
When the GRDREC2 record is written, the following output appears:
v If the record is written to a 24-by-80 display or DSPMOD is turned off, then:
1. A plain box displays starting at row 5, column 5, depth of 18 rows, and width of 70 columns. The
lines of the grid are white in color and have a solid line type defined by the file-level GRDATR
keyword.
2. If the value in the p-field CNTL1 equals 0, a vertical ruled box is drawn starting at row 7, column
7, depth of 3 rows, and width of 70 columns. The box has a vertical line every 10 character spaces.
The lines of the grid are white and have a solid line type defined by the file-level GRDATR
keyword. If the p-field CNTL1 value is -1, the box is erased. If the p-field CNTL1 value is 1, no
action is taken by the GRDBOX keyword.
3. If the value in the p-field CNTL2 equals 0, a horizontal ruled box displays. The box starts at row
12, column 7, depth of 6 rows, and width of 60 columns. The box has a horizontal line every 2
character spaces. The lines are red and the line type depends on the value in the p-field LNTP1. If
the value in LNTP1 is not valid or is NONE (X’FF’), the line type is set to the line type from the
file-level GDRATR keyword (solid) as default. If the p-field CNTL2 value is a -1, the box is erased.
If the p-field CNTL2 value is 1, no action is taken by the GRDBOX keyword.
4. If the option indicator 95 is turned on and the value in p-field CNTL3 equals 0, the horizontal and
vertical ruled box is processed. The row, column, width, and depth are determined at run time from
the appropriate p-fields. The color is determined from the p-field value in CLR1. The line type is
set to the GRDATR keyword at the file-level as default. If option indicator 95 is turned off, the box
is not be processed. If the p-field CNTL3 value is a -1, no action is taken by the GRDBOX keyword.
v If record is written to a 27-by-132 display and DSPMOD is turned on, then:
1. A plain box displays starting at row 5, column 5, depth of 19 rows, and width of 120 columns. The
lines of the grid are white in color and have a solid line type defined by the file-level GRDATR
keyword.
2. If the value in the p-field CNTL1 equals 0, a vertical ruled box is drawn starting at row 7, column
7, depth of 3 rows, and width of 110 columns. The box has a vertical line every 10 character spaces.
The lines of the grid are white and have a solid line If the p-field CNTL1 value is a -1, the box is
erased. If the p-field CNTL1 value is a 1, no action is taken by the GRDBOX keyword.
3. If the value in the p-field CNTL2 equals 0, a horizontal ruled box displays. The box starts at row
12, column 7, depth of 6 rows, and width of 110 columns. The box has a horizontal line every 2
character spaces. The lines are red and the line type depends on the value in the p-field LNTP1. If
276
System i: Programming DDS for display files
the value in LNTP1 is not valid or is NONE (X’FF’), the line type is set to the line type from the
file-level GDRATR keyword (solid) as default. If the p-field CNTL2 value is a -1, the box is erased.
If the p-field CNTL2 value is 1, no action is taken by the GRDBOX keyword.
4. If the option indicator 95 is turned on and the value in p-field CNTL3 equals 0, the horizontal and
vertical ruled box is processed. The row, column, width, and depth are determined at run time from
the appropriate p-fields. The color is determined from the p-field value in CLR1. The line type is
set to the GRDATR keyword at the file-level as default. If option indicator 95 is turned off, the box
is not processed. If the p-field CNTL3 value is a -1, no action is taken by the GRDBOX keyword.
GRDCLR (Grid Clear) keyword
You use this record-level keyword to define the rectangle on a screen in which all grid structures are
cleared.
The format of the keyword is:
GRDCLR[(*POS ([*DS3][*DS4]
start row | &start-row-field
start column | &start-column-field
depth | &depth-field
width | &width-field))]
If no parameters are defined, GRDCLR keyword will clear all grid lines.
The *POS parameter is an optional parameter. This parameter display size conditioning on the GRDCLR
keyword. When coding *DS3 or *DS4 within the *POS parameter, you can have 2 different start row, start
column, and length values depending on the display size being used. DSPSIZ keyword must be coded on
the file level.
If a field name is specified, the field must exist in the record format, data type S, usage P, length of 3, and
zero decimal positions.
Grid line support requires DBCS equipment. This equipment should have the capability of calling
Japanese DOS.
Option indicators are valid for this keyword.
Example
The following example shows how to specify the GRDCLR keyword.
|...+....1....+....2....+....3....+....4....+....5....+....6....+....7....+....8
A
DSPSIZ(*DS3 *DS4)
A
A
R GRDREC1
GRDRCD
A
GRDCLR
A
A
R GRDREC2
GRDRCD
A 90
DSPMOD(*DS4)
A
A 95
GRDCLR((*POS (*DS3 4 4 10 60) +
A
(*DS4 4 4 10 120)))
A
A
GRDLIN((*POS (*DS3 6 4 20) +
A
(*DS4 6 4 110)) (*TYPE LOWER) +
A
(*COLOR RED) (*LINTYP DBL))
A
A
R GRDREC3
GRDRCD
A
A 95
GRDCLR((*POS (&SCROW &SCOL &DPTH &WDTH)));
A
A
GRDLIN((*POS (6 4 20)) +
A
(*TYPE LOWER) +
DDS for display files
277
A
A
A
A
A
A
A
(*COLOR RED) (*LINTYP DBL))
SROW
SCOL
DPTH
WDTH
3S
3S
3S
3S
0P
0P
0P
0P
When the GRDREC1 record is written, the display screen is cleared of all grid structures.
When the GRDREC2 record is written to a 24 by 80 display or the DSPMOD keyword is turned off and
option indicator 95 is turned on, a rectangle starting at row 4, column 4, depth of 10 rows, and width of
60 columns will be cleared. If the GRDREC2 record is written to a 27 by 132 display and the DSPMOD
keyword is turned on and option indicator 95 is turned on, a rectangle starting a at row 4, column 4,
depth of 10 rows, and width of 120 columns will be cleared. The GRDCLR keyword will be processed
before the GRDLIN keyword so existing grids will be cleared before any new grids are drawn.
When the GRDREC3 record is written and option indicator 95 is turned on, the GRDCLR keyword is
processed. The position and size of the rectangle for the GRDCLR keyword will be determined at run
time from the appropriate p-field. The GRDCLR keyword will be processed before the GRDLIN keyword
so existing grids will be cleared before any new grids are drawn.
GRDLIN (Grid Line) keyword
You use this record-level keyword to define the shape, positioning, and attributes for the line structure.
This keyword defines whether the line is erased, displayed, or not processed.
The format of the keyword is:
GRDLIN((*POS([*DS3] [*DS4]
start line | &start-line-field
start column | &start-column-field
length | &length-field
[(*TYPE type of line
[repeat | &repeat-field]
[interval rule | &interval-field])]
[(*COLOR color of line | &color-field)]
[(*LINTYP type of line | &lintyp-field)]
[(*CONTROL | &control-field)]
The *POS parameter is a required parameter. This parameter allows display size and conditioning of the
GRDLIN keyword. Coding *DS3 or *DS4 with the *POS parameter, you can have 2 different start row,
start column, and length values depending on the display size being used. DSPSIZ keyword must be
coded on the file level.
If a field name is specified, the field must exist in the record format, data type S, usage P, length of 3, and
zero decimal positions.
The type parameter is a required parameter. The valid values for the type parameter are:
Value Meaning
UPPER
Horizontal line on the upper character border
LOWER
Horizontal line on the lower character border
RIGHT
Vertical line on the right character border
LEFT
278
Vertical line on the left character border
System i: Programming DDS for display files
The repeat parameter specifies the number of times the line is to be repeated. The interval parameter
specifies the number of character spaces between the repeated lines.
The default for the type parameter is upper. If neither the repeat value nor the interval value is coded, a
single grid line is drawn. The repeat and interval defaults are 1.
If a field name is specified, the field must exist in the record format and must be defined as data type S,
usage P, and length greater than 3.
The *COLOR and *LINTYP parameter defines the color and attributes of the box. P-fields can be used to
define or change the attributes at run time.
For more information about the *COLOR and *LINTYP parameters, see “GRDATR (Grid Attribute)
keyword” on page 273.
If NONE is defined by the GRDLIN keyword, the color set by the GRDATR keyword will be used.
If a p-field is specified for either the COLOR or LINTYP parameter, the field must exist in the record
format. The field is defined as data type A, usage P, and length of 1.
The *CONTROL parameter specifies the whether the GRDLIN is to be displayed, erased from the screen,
or ignored (similar to optioning off the keyword). The field must exist in the record format and must be
defined as data type S, usage P, and length of 1. If the p-field is set to 0, the grid line will be displayed. If
the p-field is set to 1, the GRDLIN keyword will not be processed. If the p-field is set to -1, the grid line
record currently shown will be cleared. If the p-field is set to something other than the defined values,
then the default 0 will be used.
Grid line support requires DBCS equipment. This equipment should have the capability of calling
Japanese DOS.
Option indicators are valid for this keyword.
Example
The following example shows how to specify the GRDLIN keyword.
|...+....1....+....2....+....3....+....4....+....5....+....6....+....7....+....8
A
DSPSIZ(*DS3 *DS4)
A
GDRATR((*COLOR WHT) (*LINTYP SLD))
A
R GRDREC1
GRDRCD
A
DSPMOD(*DS4)
A
GRDLIN((*POS (*DS3 2 1 80) +
A
(*DS4 2 1 132)) (*TYPE LOWER))
A
GRDLIN((*POS (*DS3 4 6 20) +
A
(*DS4 4 6 22)) (*TYPE RIGHT 4 15) +
A
(*COLOR RED) (*LINTYP DBL) +
A
(*CONTROL &CNTL1));
A
A
GRDLIN((*POS (8 1 &LEN1); +
A
(*TYPE LOWER 3 6) +
A
(*COLOR &CLR1); (*LINTYP &LNTP1); +
A
(*CONTROL &CNTL2));
A
CNTL1
1S 0P
A
CNTL2
1S 0P
A
LEN1
3S 0P
A
LNTP1
1A P
A
CLR1
1S 0P
A
When the GRDREC1 record is written:
DDS for display files
279
v If record is written to a 24 by 80 display or DSPMOD is turned off, then:
1. A horizontal line is drawn on the bottom character edge starting at row 2 and column 1. The length
of the line is 80 columns long. The lines of the grid are white in color and have a solid line type
defined by the file-level GRDATR keyword.
2. If the value in the p-field CNTL1 equals 0, 4 vertical lines are drawn on the right border of
characters in column 6, 21, 36, and 51. Each line is 20 rows long. The grid line is red using double
lines. If the p-field CNTL1 value is a -1, the box is erased. If the p-field CNTL1 value is a 1, no
action is taken by the GRDLIN keyword.
3. If the value in the p-field CNTL2 equals 0, 3 horizontal lines are drawn at the bottom character
edge of rows 8, 14, and 20. The length of the lines is determined at run time from the value in the
p-field LEN1. If the value in that p-field is greater than the width of the display, the value is
truncated to the display width. The color and line value is determined at run time from the p-field
CLR1 and LNTP1. If the p-field CNTL2 value is 1, no action is taken by the GRDLIN keyword.
v If record is written to a 27 by 132 display and DSPMOD is turned on, then:
1. A horizontal line is drawn on the bottom character edge starting at row 2 and column 1. The length
of the line is 132 columns long. The lines of the grid are white in color and have a solid line type
defined by the file-level GRDATR keyword.
2. If the value in the p-field CNTL1 equals 0, 4 vertical lines are drawn on the right border of
characters in column 6, 21, 36, and 51. Each line is 22 rows long. The grid line is red using double
lines. If the p-field CNTL1 value is a -1, the box is erased. If the p-field CNTL1 value is a 1, no
action is taken by the GRDLIN keyword.
3. If the value in the p-field CNTL2 equals 0, 3 horizontal lines are drawn at the bottom character
edge of rows 8, 14, and 20. The length of the lines is determined at run time from the value in the
p-field LEN1. If the value in that p-field is greater than the width of the display, the value is
truncated to the display width. The color and line value are determined at run time from the
p-field CLR1 and LNTP1. If the p-field CNTL1 value is a -1, the box is erased. If the p-field CNTL2
value is 1, no action is taken by the GRDLIN keyword.
GRDRCD (Grid Record) keyword
You use this record-level keyword to define a grid line structure.
A grid line is defined as:
v Upper horizontal line of a character box
v Lower horizontal line of a character box
v Left vertical line of a character box
v Right vertical line of a character box
This keyword has no parameters.
A grid line record can contain one or more GRDBOX or GRDLIN keywords that define the grid
structures; otherwise, it can contain the GRDCLR keyword to remove grid line structures from the
display. The grid line record can only contain the GRDCLR keyword to clear the grid structure.
A record with the GRDRCD keyword specified must contain only grid related keywords or keywords
needed to define a window. It cannot contain any other displayable fields. There can be
program-to-system fields on the record that define the allowable parameters on the grid related
keywords.
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The following keywords are allowed on a record containing the GRDRCD keyword:
DSPMOD
FRCDTA
GRDATR
GRDBOX
GRDCLR
GRDLIN
RETKEY
RETCMDKEY
RMVWDW
USRRSTDSP
WDWBORDER
WDWTITLE
WINDOW
The grid record can contain a window definition.
Grid line support requires DBCS equipment. This equipment should have the capability of calling
Japanese DOS.
Option indicators are not valid for this keyword.
Example
The following example shows how to specify the GRDRCD keyword.
|...+....1....+....2....+....3....+....4....+....5....+....6....+....7....+....8
A
A
R GRDREC1
GRDRCD
A
IGCALTTYP (Alternative Data Type) keyword
You specify this field-level keyword to change alphanumeric character fields that are capable of input and
output to DBCS fields with data type O.
This keyword has no parameters.
Put the keyword into effect by specifying IGCDTA(*YES) on the CRTDSPF, CHGDSPF, and OVRDSPF
commands. Fields specified with this keyword are DBCS fields when you specify IGCDTA(*YES) and are
alphanumeric character fields when you specify IGCDTA(*NO). For example, you can create the file by
specifying IGCDTA(*NO) on the CRTDSPF command. When using the file to display DBCS data, override
the file with the OVRDSPF command, specifying IGCDTA(*YES). To override the display file IGCDSPF,
type: OVRDSPF FILE(IGCLIB/IGCDSPF) IGCDTA(*YES)
Consider the following rules, when using the IGCALTTYP keyword:
v Specify this keyword only for input- and output-capable fields whose keyboard shift type is A, N, X,
W, or I. Do not specify this keyword for DBCS fields.
Note: Fields specified with IGCDTA(*YES) are recognized as alphanumeric OPEN data type fields (O)
when keyboard shift type is defined as N, X, W, or I.
v The following keywords are not allowed with the IGCALTTYP keyword:
AUTO(RAZ)
BLKFOLD
CHECK(M10 M11 M10F M11F RL RZ VN VNE)
CMP(EQ GE GT LE LT NE NG NL)
COMP(EQ GE GT LE LT NE NG NL)
DUP
RANGE
VALUES
Option indicators are not allowed with IGCALTTYP.
DDS for display files
281
Example
The following example shows how to specify the IGCALTTYP keyword on the DDS coding form.
|...+....1....+....2....+....3....+....4....+....5....+....6....+....7....+....8
00010A
R RECORD
00020A
FLDA
79A I 23 2IGCALTTYP
A
When the IGCALTTYP keyword is put into effect, FLDA can contain DBCS data.
IGCCNV (DBCS Conversion) keyword
This file-level keyword enables double-byte character set (DBCS) conversion in display files, an
alternative to directly typing in DBCS characters from a keyboard.
The format for the keyword is IGCCNV(CFnn line-number).
The first parameter, CFnn, identifies which command function key, when pressed, begins and ends the
conversion function. Specify any CF key (CF01 through CF24) as the parameter value. Do not specify a
CF key that has already been assigned a function.
The second parameter, line-number, identifies where (on the display) the system should place the
conversion prompt line. When you type the alphanumeric word to be converted on the conversion
prompt line, the system displays related DBCS words. The prompt line requires an entire display line and
looks like this:
_ ______
_ XXXXXXXXXXXXXXXXXXXXXX
The underlined fields (_) are input fields, in which you type the word to be converted and specify the
type of conversion to be performed.
The field indicated with XXXX is an output field, in which the system displays DBCS words related to
the alphanumeric entry to be converted.
The prompt line can be placed anywhere on the display, as long as it does not overlap other displayed
records that contain input fields.
Consider the following rules when using the IGCCNV keyword:
v Use this keyword only with files displayed on DBCS display stations.
v At least one field in the file must be an input-capable DBCS field, or an input-capable field specified
with the IGCALTTYP keyword.
v Avoid using the IGCCNV keyword with the CHECK(ME) keyword. Use of DBCS conversion with a
mandatory-entry field causes operational problems.
v Avoid using the IGCCNV keyword with field validation keywords (CHECK, CMP, RANGE, and
VALUES). Using this keyword causes DBCS conversion to work improperly.
v You must define the file for a 24 x 80 display.
v Do not display the DBCS conversion format over a format that uses the USRDFN (user-defined)
keyword.
v Option indicators are not allowed with this keyword.
Example
The following example shows how to specify the IGCCNV keyword on the DDS coding form.
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|...+....1....+....2....+....3....+....4....+....5....+....6....+....7....+....8
00100A*
00101A*
00102A
IGCCNV(CF24 24)
00103A
R MENU
A
A user can press the F24 key to begin and end DBCS conversion. Conversion can be used on all
input-capable DBCS fields. The conversion format is displayed on line 24.
Additional considerations for describing display files that contain
DBCS data
Be aware of these additional considerations when you describe display files that contain double-byte
character set (DBCS) data.
v Specify IGCDTA(*YES) on the CRTDSPF command when DBCS data is present in the file, but not
indicated in DDS. For example, specify IGCDTA(*YES) if the file sends messages that are DBCS (DDS
keyword MSGCON).
v Prevent users from using display files to insert alphanumeric data into DBCS database files by
specifying the keyboard shift for a field in a field reference file rather than in a display file. Users
cannot type alphanumeric data in input-capable fields of DBCS display files and, therefore, cannot type
alphanumeric data into the database file.
Specify data type J or G in a database field reference file and R in position 29 of the associated display
file.
Use data type J or G for all fields in a field reference file to reduce the possibility of incorrectly setting
the default keyboard shift to O (open).
v Describe fields in the file as DBCS fields to cause the system to consider the file to be DBCS even if
you do not specify IGCDTA(*YES) on the CRTDSPF command.
v The system displays the DBCS data that does not fit on one display line onto the next display line with
the following effects:
– DDS sends a warning message stating that it split DBCS characters for constant and initialized fields
containing DBCS data.
– DDS sends a warning message stating that it split DBCS characters if you specified the J, E, or G
data type.
– DDS does not send a warning message stating that it split DBCS characters if you specified the O
data type. DDS warns you of the potential for this problem when the file is created.
– The second display line of a continued field might not make sense if the system must split a DBCS
character in order to continue the line.
v Text with bracketed-DBCS characters can be used anywhere that comments and character strings are
allowed.
v Consider the following rules when you specify subfiles:
– Use the SFLMSG keyword to create DBCS messages by typing DBCS data for the character string in
the message.
Check the length of the message. The space available to display it must be long enough to contain
the message. DDS warns you when a display field might be truncated. However, the field might be
truncated in the middle of a DBCS character, and the data displayed following the truncated
character will not make sense.
– The system ignores the SFLEND keyword when displaying a plus sign (+) to indicate that more
records exist in the subfile. When displaying the plus sign, the system writes over a DBCS character.
v Consider the following rules when you specify the MSGID keyword:
– If the message text contains DBCS characters, and the message length exceeds the MSGID field
length, the message text is truncated so that it ends with an alphanumeric character. If the
DDS for display files
283
truncation occurs in the middle of a DBCS character, the text truncates after the previous DBCS
character and a shift-in character is added to the end of the text.
– If the message text contains DBCS characters, either define the MSGID field so that it does not wrap
to the next line, or make sure the message text does not wrap in the middle of a DBCS character.
Code license and disclaimer information
IBM grants you a nonexclusive copyright license to use all programming code examples from which you
can generate similar function tailored to your own specific needs.
SUBJECT TO ANY STATUTORY WARRANTIES WHICH CANNOT BE EXCLUDED, IBM, ITS
PROGRAM DEVELOPERS AND SUPPLIERS MAKE NO WARRANTIES OR CONDITIONS EITHER
EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OR
CONDITIONS OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, AND
NON-INFRINGEMENT, REGARDING THE PROGRAM OR TECHNICAL SUPPORT, IF ANY.
UNDER NO CIRCUMSTANCES IS IBM, ITS PROGRAM DEVELOPERS OR SUPPLIERS LIABLE FOR
ANY OF THE FOLLOWING, EVEN IF INFORMED OF THEIR POSSIBILITY:
1. LOSS OF, OR DAMAGE TO, DATA;
2. DIRECT, SPECIAL, INCIDENTAL, OR INDIRECT DAMAGES, OR FOR ANY ECONOMIC
CONSEQUENTIAL DAMAGES; OR
3. LOST PROFITS, BUSINESS, REVENUE, GOODWILL, OR ANTICIPATED SAVINGS.
SOME JURISDICTIONS DO NOT ALLOW THE EXCLUSION OR LIMITATION OF DIRECT,
INCIDENTAL, OR CONSEQUENTIAL DAMAGES, SO SOME OR ALL OF THE ABOVE LIMITATIONS
OR EXCLUSIONS MAY NOT APPLY TO YOU.
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System i: Programming DDS for display files
Appendix. Notices
This information was developed for products and services offered in the U.S.A.
IBM may not offer the products, services, or features discussed in this document in other countries.
Consult your local IBM representative for information on the products and services currently available in
your area. Any reference to an IBM product, program, or service is not intended to state or imply that
only that IBM product, program, or service may be used. Any functionally equivalent product, program,
or service that does not infringe any IBM intellectual property right may be used instead. However, it is
the user’s responsibility to evaluate and verify the operation of any non-IBM product, program, or
service.
IBM may have patents or pending patent applications covering subject matter described in this
document. The furnishing of this document does not grant you any license to these patents. You can send
license inquiries, in writing, to:
IBM Director of Licensing
IBM Corporation
North Castle Drive
Armonk, NY 10504-1785
U.S.A.
For license inquiries regarding double-byte (DBCS) information, contact the IBM Intellectual Property
Department in your country or send inquiries, in writing, to:
IBM World Trade Asia Corporation
Licensing
2-31 Roppongi 3-chome, Minato-ku
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© Copyright IBM Corp. 2001, 2008
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| The licensed program described in this document and all licensed material available for it are provided
| by IBM under terms of the IBM Customer Agreement, IBM International Program License Agreement,
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Any performance data contained herein was determined in a controlled environment. Therefore, the
results obtained in other operating environments may vary significantly. Some measurements may have
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Each copy or any portion of these sample programs or any derivative work, must include a copyright
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This DDS for display files publication documents intended Programming Interfaces that allow the
customer to write programs to obtain the services of IBM i5/OS.
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System i: Programming DDS for display files
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Appendix. Notices
287
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System i: Programming DDS for display files
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