Re: Calling Program with a Procedure Interface

[rob@xxxxxxxxx]

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John,

Suppose you have a program, named MYPGM1, which currently has the
following:
     D MyVar1          s              1a
     D MyVar2          s              1a
     C     *ENTRY        PLIST
     C                   PARM                    MyVar1
     C                   PARM                    MyVar2

You put this into your callee program, MYPGM1
     D MYPGM1          PR                  extpgm('MYPGM1')
     D  MyVar1                        1a
     D  MyVar2                        1a
     D MYPGM1          PI
     D  MyVar1                        1a
     D  MyVar2                        1a

And you put this into your calling program
     D MYPGM1          PR                  extpgm('MYPGM1')
     D  MyVar1                        1a
     D  MyVar2                        1a
     C                   callp     mypgm1(X:Y)
One of the benefits of using a prototype instead of *ENTRY is that now you
can change things on the PR and PI like CONST, so that you can do
     C                   callp     mypgm1('X':'Y')


Now that I made it simple, let's pretty it up
Put this into mylib/QPROTOSRC,MYPGM1
     D MYPGM1          PR                  extpgm('MYPGM1')
     D  MyVar1                        1a
     D  MyVar2                        1a
You put this into your callee program, MYPGM1
      /INCLUDE MYLIB/QPROTOSRC,MYPGM1
     D MYPGM1          PI
     D  MyVar1                        1a
     D  MyVar2                        1a

And you put this into your calling program
      /INCLUDE MYLIB/QPROTOSRC,MYPGM1
     C                   callp     mypgm1(X:Y)

Rob Berendt
--
"They that can give up essential liberty to obtain a little temporary
safety deserve neither liberty nor safety."
Benjamin Franklin




JMBauman@wardtrucking.com
Sent by: rpg400-l-admin@midrange.com
04/04/2002 01:56 PM
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        Subject:        Calling Program with a Procedure Interface



OK, I am thoroughly confused now.  What I want to do is perform a call
from
one program to another.  I don't want to define a procedure.  I  thought
in
RPG IV we are supposed to use the 'PI' to replace the *ENTRY PLIST.  Can
someone make this easy for me? (Ha)

Thanks
John M. Bauman

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