| Microsoft DirectX 8.1 (C++) |
The IMediaControl interface provides methods for controlling the flow of data through the filter graph. It includes methods for running, pausing, and stopping the graph. The Filter Graph Manager implements this interface. For more information on filter graph states, see Data Flow in the Filter Graph.
IMediaControl also provides Automation-compatible methods for building graphs. Applications written in Microsoft® Visual Basic® can use these methods to construct filter graphs or retrieve information about the graph. Applications written in C or C++ should use the methods in IGraphBuilder and IFilterGraph2 instead, because they are more efficient.
In addition to the methods inherited from IDispatch, the IMediaControl interface exposes the following methods.
| Method | Description |
| Run | Runs all the filters in the filter graph. |
| Pause | Pauses all filters in the filter graph. |
| Stop | Stops all the filters in the filter graph. |
| StopWhenReady | Pauses the filter graph, allowing filters to queue data, and then stops the filter graph. |
| GetState | Retrieves the state of the filter graph. |
| RenderFile | Builds a filter graph that renders the specified file. (For Visual Basic.) |
| AddSourceFilter | Adds a source filter to the filter graph, for a specified file. (For Visual Basic.) |
| get_FilterCollection | Retrieves a collection of the filters in the filter graph. (For Visual Basic.) |
| get_RegFilterCollection | Retrieves a collection of all the filters listed in the registry. (For Visual Basic.) |