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EC_STATE_CHANGE

  • Artigo
 
Microsoft DirectShow 9.0

EC_STATE_CHANGE

The filter graph has changed state.

Parameters

lParam1

(DWORD) Member of the FILTER_STATE enumerated type, indicating the new graph state.

lParam2

Zero.

Default Action

No default action. The event is not sent to the application.

  • **Note   **This event can occur when the graph shuts down. If you override the default action and listen for this event, you must be especially careful not to process events after releasing the Filter Graph Manager. Otherwise, your application might reference an invalid IMediaEvent pointer and crash. For more information, see Responding to Events.

Requirements

  Header: Dshow.h.

See Also