If you're talking external program calls then you're basically correct.  MI
is the exception as it can pass/receive parms by value.

It sounds like MQ series uses an ILE procedure interface.   I would expect
large parameters like a buffer to be passed as a pointer.  Not very
efficient to pass a buffer by value.   The buffer parm is likely defined as
either a "pointer by value" or a "varsize field by reference".   Actually
both of these are the effectively the same (pointer to data).


Keith


----- Original Message ----- 
From: "jt" <jt@xxxxxx>
To: "Midrange Systems Technical Discussion" <midrange-l@xxxxxxxxxxxx>
Sent: Monday, March 22, 2004 8:35 AM
Subject: RE: Record size limitation in RPG - MQ Series


> If doing this in RPG, when RPG passes a parm it is actually passing a
> pointer TO the parm.  This is because RPG passes parms "by reference"
rather
> than "by value", normally.  (I don't recall, right now, if RPG even CAN
pass
> by value, but think that mebbe was added with CONST or some such.)  I
dunno
> MQ, however, but sounds like you just pass the variable-name and it'll
work.
>
> | -----Original Message-----
> | [mailto:midrange-l-bounces@xxxxxxxxxxxx]On Behalf Of Carl Galgano
> | Sent: Monday, March 22, 2004 10:58 AM
>
> | How do you pass the
> | pointer to a user
> | space to the MQPUT?  There is an API to call to do the MQPUT, but I
don't
> | know how to pass the pointer.
>
>
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