Re: QMHRDQM API - Retrieve Data Queue Message

Mark,

The parameters to this API are "Char, Binary, Char and Char"  there is no
"pointer" type parameter being passed.

At the same time, however, all parameters are passed "by reference", (i.e.
by pointer) since thats the way parameters work. 

I dont understand why you're concerned about QMHQRDQD returning more than
32,767 bytes, when the maximum amount that it can return is only 108
bytes?!  Perhaps you mean QMHRDQM?  


On Tue, 19 Dec 2000, Mark Drazic wrote:

> I am unable to get this API to return the pointer for the Receiver Variable
> (1st parm).  Whether I send a *NULL pointer, or an already allocated one,
> the API always returns the pointer as *NULL.  All other parms appear to be
> correct, there are no error messages issued by the API, and entries do exist
> on the Queue based on the results from the QMHQRDQD API.  If I can't use a
> pointer, I am limited to a field size of 32,767 for all the Data Queue
> entries, which will probably not be workable.  
> 
> Is there some trick to getting this to work?  I am calling the API from a
> Service Program in an Activation Group called QSRV, could this be affecting
> the results?  I have noticed this problem in calling other IBM API's, and
> RPG ILE needs to be able to receive pointer information for these types of
> functions.
> 
> Any help would be greatly appreciated.
> 

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