|Microsoft DirectX 9.0|
The GetNumberOfStreams method retrieves the number of input streams being mixed.
HRESULT GetNumberOfStreams( DWORD* pdwMaxStreams );
[out] Pointer to a double word that receives the number of streams being mixed, which is equal to the number of input pins on the VMR.
The method returns an HRESULT. Possible values include those in the following table.
|S_OK||The method succeeded.|
|E_POINTER||PdwMaxStreams is invalid|
Include D3d9.h, Vmr9.h.