MESSAGE
Subfiles
Create the message file and the error messages. Issue the
following commands:
MESSAGE
SUBFILE:
CRTMSGF MSGF(MYLIB/TSTMSGF)
ADDMSGD MSGID(ERR0001) MSGF(MYLIB/TSTMSGF) MSG('Example of error
message')
DISPLAY FILE:
Message Subfile:
A R MSGSFL SFL
A SFLMSGRCD(24)
A M@MSGK SFLMSGKEY
A M@PGMQ SFLPGMQ(10)
Message Subfile Control:
A R MSGCTL SFLCTL(MSGSFL)
A 41 SFLDSP
A 43 SFLDSPCTL
A 40 SFLCLR
A 42 SFLEND
A SFLSIZ(0010)
A SFLPAG(0001)
RPG PROGRAM:
Initialize
Message Subfile in Extended ‘F’ Specification as below
F
SFILE(MSGSFL:W$RRN1)
Subroutine -
Clear Message Subfile
C #CLRMG BegSr
*
C
SetOn 40
C
SetOff 414243
C
Write MsgCtl
C
SetOff 4041
C
SetOn
4243
C
Z-Add *ZERO W$RRN1
*
C EndSr
Clear Subroutine:
Setoff SFLDSP,
SFLDSPCTL
Seton SFLCLR
Setoff SFLEND
Clear MSGCTL
Setoff SFLDSP, SFLCLR
Seton SFLDSPCTL,SFLEND
Subroutine - Write Message Subfile
C #SDMSG BegSr
*
C
SetOn 41
C
Call 'SSM720C1'
C Parm P$MGID 7
C
Parm 'CCCMSGF ' P$MSGF 10
C
Parm P$MGVL 80
C
Parm P$MSGK 4
C
Parm P$CSTS 1
*
C
Eval M@MSGK = P$MSGK
C
Add 1 W$RRN1
C
Write MsgSfl
*
C
Eval P$MGVL = *BLANK
*
C
EndSr
CL PROGRAM:
PGM PARM(&MSGID &MSGF
&MSGVAL &MSGKEY &CMPSTS)
DCL VAR(&MSGID)
TYPE(*CHAR) LEN(7)
DCL VAR(&MSGF) TYPE(*CHAR)
LEN(10)
DCL VAR(&MSGVAL)
TYPE(*CHAR) LEN(80)
DCL VAR(&MSGKEY)
TYPE(*CHAR) LEN(4)
DCL VAR(&CMPSTS) TYPE(*CHAR)
LEN(1)
CHGVAR VAR(&CMPSTS) VALUE('0')
SNDPGMMSG MSGID(&MSGID) MSGF(*LIBL/&MSGF)
+
MSGDTA(&MSGVAL)
KEYVAR(&MSGKEY)
MONMSG MSGID(CPF0000) EXEC(CHGVAR
VAR(&CMPSTS) +
VALUE('1'))
EXIT: ENDPGM
Using RRN to
Chain to Subfiles
We can use RRN to chain to subfile to read all records (this
might be particularly useful in EDITABLE subfiles since we may have to read all
records)
Rrn = 1
DoWhile Rrn <= SubfileRrn
Rrn Chain Subfile
(….xxx….)
Update Subfile
Rrn = Rrn + 1
EndDo
(Update the subfile if you want errors to be highlighted)
All records can also be read from a subfile by making SFLNXTCHG
= ON and then doing a READC.
MESSAGE Subfiles
Unknown
Friday 31 May 2013