IVMRImagePresenter::StartPresenting
| Microsoft DirectShow 9.0 |
IVMRImagePresenter::StartPresenting
The StartPresenting method is called just before the video starts playing. The allocator-presenter should perform any necessary configuration in this method.
Syntax
HRESULT StartPresenting( DWORD_PTR dwUserID );
Parameters
dwUserID
[in] An application-defined DWORD_PTR cookie that uniquely identifies this instance of the VMR for use in scenarios when one instance of the allocator-presenter is used with multiple VMR instances.
Return Values
If the method succeeds, it returns S_OK. If it fails, it returns an error code.
Remarks
PresentImage can be called when the filter is in either a running or a paused state. StartPresenting and StopPresenting can be called only in a running state. Therefore, if the graph is paused before it is run, PresentImage will be called before StartPresenting.
Requirements
Header: Declared in Strmif.h; include Dshow.h.
Library: Use Strmiids.lib.
See Also