RE: Calling a Function from RPG Program having multiple Functions

 >> You can't do it that way.

 >> You need to place your functions into a service program. 

I agree that for most cases a Service program is the way to go - after all
that is what they were designed for.

However, your basic "You can't do it ..." statement is incorrect.  I can and
have done it several times.  In fact it is not even necessary to bind the
modules - you can treat _any_ PGM object as a service program if you wish.

The basic requirement is that you have a means to call the PGM and it
responds by supplying one or more procedure pointers to its internal
procedures.  You then make subsequent calls via those procedure pointers.

We have used the technique a number of times to get the effect of a
dynamically loaded "service program" - it also allows for semi) dynamic
swapping of the "service program".  Not that there are APIs for dynamically
resolving the procedures in a Service Program, this is not needed as often,
but it has its uses.


Jon Paris
Partner400

www.Partner400.com
www.RPGWorld.com