RE: Passing Parms Between RPG programs using Pointer

["Steve Richter" <srichter@xxxxxxxxxxxxx>]

Hi Nick,

A pointer is a data type just like any other:

d Name            s             40a
d pName           s               *

So when the proc is prototyped, a parm that is data type pointer is declared
just like one that is data type character:
d pInName                         *   value
d InName                        40a   value

Here is a proc that receives a pointer as its sole parameter.  It displays
the data that the pointer points to.

** ------------------------ DsplyName --------------
p DsplyName       b
d DsplyName       pi
d pInName                         *   value

d Name            s             40a   based(pInName)
 /free
      dsply       Name ;
 /end-free
p                 e

And the following code calls the proc, passing a pointer to the data to be
displayed:

d Name            s             40a
d pName           s               *
 /free
      Name        = 'Simon & Schuster' ;
      pName       = %addr(Name) ;
      DsplyName( pName ) ;
      return ;


-Steve

-----Original Message-----
From: rpg400-l-bounces@xxxxxxxxxxxx
[mailto:rpg400-l-bounces@xxxxxxxxxxxx]On Behalf Of Nick Leonessa
Sent: Thursday, April 24, 2003 9:26 PM
To: RPG Forum
Subject: Passing Parms Between RPG programs using Pointer


I wrote an RPG program to list members of a database file using API's. I
have the results of the API loading into an array.

I would like to be able to pass the results of this program to any other
program that may need it. I know that passing information via pointers if
faster, but I'm not sure how to do this.

Any suggestions.

Thanks.

Nick L.

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