CBaseRenderer.SendNotifyWindow method
[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 It has been superseded by MediaPlayer, IMFMediaEngine, and Audio/Video Capture in Media Foundation.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 SendNotifyWindow method notifies the upstream filter of the video window handle.
Syntax
void SendNotifyWindow(
IPin *pPin,
HWND hwnd
);
Parameters
-
pPin
-
Pointer to the IPin interface of the upstream filter's output pin.
-
hwnd
-
Handle to the video window, or NULL.
Return value
This method does not return a value.
Remarks
If the output pin of the upstream filter supports the IMediaEventSink interface, this method sends it the EC_NOTIFY_WINDOW event code along with the window handle.
Video renderers can override their CBaseRenderer::CompleteConnect methods to call this method. It provides a mechanism for informing the upstream filter of the window handle. If you do this, override the CBaseRenderer::BreakConnect method as well, and call SendNotifyWindow with a NULL handle.
Requirements
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