IMediaControl::Pause
This method pauses all the filters in the filter graph.
HRESULT Pause( );
Parameters
None.
Return Values
Returns S_OK if the graph is actually paused.
Returns S_FALSE if the graph is in paused state but some filters have not completed the transition to pause. Call GetState to wait for the transition to the paused state to complete or to check if the transition has completed. If the method returns S_FALSE, subsequent calls to GetState will return a value of State_Paused when the graph is paused. If the transition to paused is not complete GetState can return a return code of VFW_S_STATE_INTERMEDIATE.
Returns an HRESULT error code if the graph could not transition to paused state and is now stopped.
Remarks
In the paused state, filters process data but do not render it. Data is pushed down the filter graph and is processed by transform filters as far as buffering permits. No data is rendered (except that media types capable of being rendered statically, such as video, have a static, poster frame rendered in paused mode). Therefore, putting a filter graph into a paused state cues the graph for immediate rendering when put into a running state.
Requirements
DirectShow applications and DirectShow filters have different include file and link library requirements. See Setting Up the Build Environment for more information.
OS Versions: Windows CE 2.12 and later. Version 2.12 requires DXPAK 1.0 or later.
See Also
Last updated on Wednesday, April 13, 2005
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