|Microsoft DirectX 9.0|
The NotifyEvent method is called by the allocator-presenter to inform the VMR of any significant DirectShow events during the allocation or presentation processes.
HRESULT NotifyEvent( LONG EventCode, LONG_PTR Param1, LONG_PTR Param2 );
[in] Specifies the event code.
[in] Specifies Param1 of the event code.
[in] Specifies Param2 of the event code.
If the method succeeds, it returns S_OK. If it fails, it returns an error code.
The VMR provides the allocator-presenter with a pointer to this interface in a call to IVMRSurfaceAllocator::AdviseNotify. When the allocator-presenter calls this method and specifies some regular DirectShow event, such as EC_ERRORABORT or EC_VMR_RENDERDEVICE_SET, the VMR will pass the event to the filter graph manager.