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Waits for an operation such as Pause to complete, allowing filters to queue up data, then stops the filter graph.
HRESULT StopWhenReady( );
Return Values
Returns an HRESULTvalue.
Remarks
Changing the current position when stopped will not normally repaint the video window with the new position. Applications will need to enter Pause mode to do this. Calling StopWhenReadyinstead of simply calling Stopafter this pause ensures that the graph is fully paused, and that data has arrived at the video renderer and has been displayed before the graph is stopped.
This method is run asynchronously so that the application regains control immediately and can respond to user input. Use this method rather than calling IMediaControl::GetStatewith an INFINITE time-out, followed by IMediaControl::Stop.