Re: multi layer prob.

Learn to love the MONMSG command.  If you come from a PC Dos background then 
the closest comparison is the IF ERRORLEVEL command from DOS.  What version of 
OS/400 are you running?  If you are running V4R2 or above you can do the 
following with any AS/400 command:
1)  Type in the command name.
2)  Press F4 to prompt
3)  Up arrow to the description line.  For example 'Check Object (CHKOBJ)'.
4)  Press F1 for help.
5)  Roll down to see which messages may be monitored.
For example on CHKOBJ I see that I may monitor for the following messages:
CPF9801     Object &2 in library &3 not found.          
CPF9802     Not authorized to object &2 in &3.          
CPF9810     Library &1 not found.                       
CPF9815     Member &5 file &2 in library &3 not found.  
CPF9820     Not authorized to use library &1.           
CPF9830     Cannot assign library &1.                   
CPF9899     Error occurred during processing of command.

Sample on how to use this:
CHKOBJ OBJ(&LIB/&OBJ)   OBJTYPE(&OBJTYP) 
MONMSG MSGID(CPF9801)   EXEC(DO)
/*  Insert your logic here  */
ENDDO

1)  Yes, I would only use CHKOBJ in a CL program.
2)  How does a CL program execute a command to display an error message?  It 
depends on what you want it to do.
a)  If you want a full screen then you would add a DCLF to declare which screen 
file to use.  Then you would use the SNDRCVF to display and read the screen.  
Of course you would have to build the screen using SDA or by using DDS and 
CRTDSPF.
b)  If you want to use messaging you can either use the IBM supplied messages 
or create your own by using WRKMSGF.  After this then you can use SNDPGMMSG.
3)  There are two parameters in CALL QCMDEXC.  The first is the command you 
want to execute.  This is an alphanumeric of whatever length you want.  The 
second parameter is the length of the command and should be a 15,5 packed 
decimal.  For example lets say you want to execute the following command:  
DSPOBJD OBJ(LIB/*ALL) OBJTYPE(*ALL)  OUTPUT(*OUTFILE) OUTFILE(QTEMP/FILE).  
Then you would set a variable equal to this command.  Compute the length of 
this variable and store that into our 15,5 packed variable.
CALL  'QCMDEXC'
PARM CMD
PARM CMDLEN        155

I have no idea what info you want displayed from this file on the screen.





mohammadakhan@yahoo.com on 10/05/98 09:33:11 PM
Please respond to MIDRANGE-L@midrange.com@Internet
To:     MIDRANGE-L@midrange.com@Internet, RPG400-L@midrange.com@Internet
cc:      
Subject:        multi layer prob.

hi, I'd like some help, if anyone is willing.

1-does CHKOBJ command only work in a CL program?
2-how does a CL pgm. execute a command that displays an error mssg.
for instance?
3-how does CALL QCMDEXC in rpg pgm. execute the DSPOBJD command so
that a temporary output file in QTEMP is created?

basically i'm working on a pgm. that a user inputs an obj. name, lib.,
and obj. type.

if the obj. does not exist CL pgm activates error msg.

if the obj. does exist then the temporary file created in QTEMP by
CALL QCMDEXC (that activates DSPOBJD cmd)
should have some of its info displayed on an output screen.

hope this makes sense.

Mohammad







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