Microsoft DirectX 9.0


Passes an EC_VIDEO_SIZE_CHANGED message to the filter graph manager.


virtual HRESULT OnVideoSizeChange(void);

Return Value

Returns an HRESULT value that depends on the implementation; can be one of the following values, or other values not listed.

Value Description
E_FAIL Failure.
E_OUTOFMEMORY Out of memory.


A video renderer should call this member function each time the video size is changed; this will typically be called once after initial connection. If the renderer can support dynamic format changes (from 320 x 240 to 160 x 120), it should also call it after each change.

See Also