IDirectSound and Unknown IID

Guillaume B. guillaume.benny at
Tue Jan 1 19:43:53 CST 2008

Reece Dunn wrote:

> On 31/12/2007, Guillaume B. <guillaume.benny at> wrote:
>> Stefan Dösinger wrote:
>> > Am Montag, 31. Dezember 2007 10:25:15 schrieb Vijay Kiran Kamuju:
>> >> >  So the problem is that the interace
>> >> > {2a8af120-e9de-4132-aaa5-4bdda5f325b8} is not supported by the
>> >> > {current
>> >> > Wine implementation. I've searched around but I couldn't find
>> >> > anything about this IID. If I knew what interface it was, maybe I
>> >> > could implement a stub and it might make the sound work.
> I can't see it in the Vista and XP CLSID section of the registry.
> Is it an interface that is being queried for internally by dmime or
> dswave (as you are using the native versions)? That is, MS may not be
> publicizing it (as it is not part of the DirectSound API), but are
> using it to coordinate interaction between dswave and dsound.
> It would be useful to find out if it is the game that is querying for
> this interface, or if it is the native DLLs.


 I think you are right: the interface seems to be queried from dmime,
although I can't confirm it since I can't make the debugger stop in my
function to see the backtrace... and I can't see the assembly code that
called my function.

 I've tried to use the builtin dmime but it doesn't make a sound altough it
seems to call DSound functions frequently with code executed in a timer.
It's probably because IDirectMusicPerformance8Impl_PlaySegmentEx is not
implemented. I've tried to add some code to make it work but since I don't
really know how it works, my small hack doesn't play a sound!

 So now I'm stuck. Thanks anyway for your help.


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