|Microsoft DirectX 9.0|
The OnReceiveFirstSample method is called when the filter receives a sample while paused.
virtual void OnReceiveFirstSample( IMediaSample *pMediaSample );
Pointer to the sample's IMediaSample interface.
The CBaseRenderer::Receive method calls this method. It does nothing in the base class, but the derived class can override it. This method is intended primarily for video renderers. When a video renderer is paused, it typically displays the first sample as a still image.
Seeking the graph while paused also causes this method to be called.