Re: Question on PI

[Paul Tuohy <tuohyp@xxxxxxx>]

Thanks David and excuse me while I go Doh! :-) Passing a pointer was the
obvious answer. The data structure will be externally defined in both
programs so there will be no problem with mis-match of parameters etc. 

Many thanks

Paul Tuohy

David Morris wrote:
> 
> Paul,
> 
> If you want to pass a data structure and it will be modified in your
> procedure that looks OK.  You could achieve the same result by
> passing the data structures address.  If the DS cannot be modified,
> I would add CONST and move the parameter to the DS.  I would
> only use these techniques if I had no control over the DS definition.
> My preference would be to send the subfields as individual parms.
> This allows more flexibility, better documents, and validates the
> procedure's parameters.
> 
> David Morris
> 
> >>> Paul Tuohy <tuohyp@ibm.net> 03/22/99 03:34PM >>>
> Hope someone can help me. I am working on a V4R2 machine and I am
> defining a Procedure Interface for a main procedure in a called program.
> 
> Does anyone know of a way of defining a data structure as a parameter in
> the PI? the following is the best I could come up with ( excuse the
> spacing etc.)
> 
> D                                 PI
> D DataPrm
> Like(DataDs)
> 
> D DataPtr                     S                                 *
> 
> D DataDs                     DS
> Based(DataPtr)
> 
>                       ( definition of subfields)
> 
> C                                         Eval    DataPtr =
> %Addr(DataPrm)
> 
> Anyone got a better solution?
> 
> TIA
> 
> Paul Tuohy
> 
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