CBaseWindow.OnClose 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 It has been superseded by MediaPlayer, IMFMediaEngine, and Audio/Video Capture in Media Foundation.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 OnClose method handles WM_CLOSE messages.
Syntax
virtual BOOL OnClose();
Parameters
This method has no parameters.
Return value
Returns TRUE.
Remarks
In the base class, this method simply hides the window. Typically, a derived class will override this method so that it sends an EC_USERABORT event as well. Do not override the method to destroy the window. Instead, call the CBaseWindow::DoneWithWindow method when the owning filter is destroyed.
Requirements
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