pidl [in,out] helpers

Sam Liddicott sam at
Thu Oct 1 06:45:39 MDT 2009

* Sam Liddicott wrote, On 22/09/09 08:34:
> Having done some more reading, it seems that for [ref] pointers, there 
> should be no difference in the marshalling code between:
>   [out,ref] int count;
> and
>   [out,ref] int *count;
> so I'll try something at the pre-processor level, perhaps #define-ing a 
> macro to * unless pidl is being used.
> I'll let you know how it goes.

I can confirm that it works fine:

#ifdef __midl
#define VALUE *
#define VALUE_REF ,ref
#define VALUE
#define VALUE_REF

int something(
   [in] in_arg,
   [out VALUE_REF] int VALUE out_arg

pidl handles a non-pointer out value which is marshalled compatible with 
midl which produces what we would recognize as Samba3 style stub functions.

I was able to marshal a function and arguments from windows to samba and 
back with complete success.

So no need at all for pidl internal nastyness.


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