|Microsoft DirectX 9.0|
The GetSourcesCount method retrieves the number of sources in the track.
HRESULT GetSourcesCount( long *pVal );
Pointer to a variable that receives the number of sources in the track.
Returns S_OK if successful, or E_POINTER otherwise.
Header: Include Qedit.h. This header file is not compatible with Microsoft® Direct3D® headers later than version 7.
Library: Use strmiids.lib.