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71

answers:

1
+1  Q: 

Where is DRV_QUERYFUNCTIONINSTANCEID declared?

This question is related to this one.

I need to use the winmm function waveInMessage using the above mentioned constant. I can find a bunch of similar defines (such as DRV_QUERYDEVICEINTERFACE) in the mmddk.h, but the pair DRV_QUERYFUNCTIONINSTANCEID and DRV_QUERYFUNCTIONINSTANCEIDSIZE is not. They are mentioned in the MSDN document entitled "Device Roles for Legacy Windows Multimedia Applications", which makes no reference to header files used in the example.

+2  A:  
#include <mmddk.h>

What compiler are you using?

  • Download the latest Platform SDK for Windows if you're using VC++.
  • In case of, e.g MinGW, new headers should be available.

I bet your problem is related to old header files.

Hernán  2009-12-21 21:02:41
Thanks! I was using an old SDK... I was able to find it on the WinDDK 6001.18001
Padu Merloti  2009-12-21 21:10:57

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