IMediaControl::Pause method (control.h)
[The feature associated with this page, DirectShow, is a legacy feature. It has been superseded by MediaPlayer, IMFMediaEngine, and Audio/Video Capture in Media Foundation. Those features have been optimized for Windows 10 and Windows 11. Microsoft strongly recommends that new code use MediaPlayer, IMFMediaEngine and Audio/Video Capture in Media Foundation instead of DirectShow, when possible. Microsoft suggests that existing code that uses the legacy APIs be rewritten to use the new APIs if possible.]
The Pause method pauses all the filters in the filter graph.
Syntax
HRESULT Pause();
Return value
Returns an HRESULT value. Possible values include the following.
| Return code | Description |
|---|---|
|
The graph paused successfully, but some filters have not completed the state transition. |
|
All filters in the graph completed the transition to a paused state. |
Remarks
Pausing the filter graph cues the graph for immediate rendering when the graph is next run. While the graph is paused, filters process data but do not render it. Data is pushed through the graph and processed by transform filters as far as buffering permits, but renderer filters do not render the data. However, video renderers display a static poster frame of the first sample.
If the method returns S_FALSE, call the IMediaControl::GetState method to wait for the state transition to complete, or to check if the transition has completed. When you call Pause to display the first frame of a video file, always follow it immediately with a call to GetState to ensure that the state transition has completed. Failure to do this can result in the video rectangle being painted black.
If the method fails, it stops the graph before returning.
Requirements
| Requirement | Value |
|---|---|
| Minimum supported client | Windows 2000 Professional [desktop apps only] |
| Minimum supported server | Windows 2000 Server [desktop apps only] |
| Target Platform | Windows |
| Header | control.h (include Dshow.h) |
| Library | Strmiids.lib |