Re: User defined commands with a "choice program"

To do some parameter checking on the command itself, you can specify a range or 
the allowed values to be entered.

Look at the keywords RSTD, VALUES, RANGE, SPCVAL, etc on the PARM statement.

I think they will be working even with a Choice PGM.

Regards,
Carel Teijgeler 

*********** REPLY SEPARATOR  ***********

On 4-3-03 at 13:35 Vern Hamberg wrote:

>To see the validity check program parameter you need to F9 or F10 on
>CRTCMD 
>or CHGCMD.
>
>What I've done is have a module that sets up the string that's returned by 
>the choice program. Then I can use that same module in the validity 
>checking program.
>
>CHCPGM module CALLPRC to choice creation module
>      returns the value or prompt string to command
>VCP module CALLPRC to choice creation module with 'P' in position 21 - may 
>not need 1st 20 characters
>      checks if entered parameter is in list of valid values
>
>Get to Chapter 9 (IIRC) of the CL Programming manual - VCP is a lot better 
>than validating in the CPP. You end up sending 2 messages, a CPD0006 
>diagnostic with the error text (or one of your own defined as described in 
>that chapter), and a CPF0002 exception.
>
>There is no visual cue as to which parameter is in error, so put something 
>in the message text.
>
>BTW, a prompt override program can alter the values entered - I assume it 
>could have a subfile or whatever for entry.
>