Re: Passing pointers as parms

[jpcarr@xxxxxxxxxxxx]

Joel

Jim said
>If you pass a pointer to the data structure yourself, then have a data
>structure pointer point to this value, you are doing manually the same
thing
>that RPG and the OS are already doing.  There should be no reason to do
this
>I could think of, unless you are looking for some side affect of this.
>>Jim Langston

That is what I was trying to say.

In this example you don't have a VALUE keyword on the pointer parm.   So it
will pass the parm by Reference
(just like all  dynamic calls do)

------------
D ptrtst2         pr                  extpgm('PTRTST2')
D pointer                         *
-----------

This example would pass the value itself

D ptrtst2         pr                  extpgm('PTRTST2')
D pointer                         *   VALUE
--------------

You may have a problem doing it this way.   I never tried it.

If you try using the CONST keyword it would be passed as a READ ONLY
Reference.


Just for grin's did you try my example of 3 dynamic called programs (PGMA,
PGMB, PGMC) ?
Which demonstates this idea.

John Carr



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