CBaseWindow.OnReceiveMessage 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 It has been superseded by MediaPlayer, IMFMediaEngine, and Audio/Video Capture in Media Foundation.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 OnReceiveMessage method handles window messages.
Syntax
virtual LRESULT OnReceiveMessage(
HWND hwnd,
INT uMsg,
WPARAM wParam,
LPARAM lParam
);
Parameters
-
hwnd
-
Handle to the window.
-
uMsg
-
Message identifier.
-
wParam
-
First message parameter.
-
lParam
-
Second message parameter.
Return value
Returns 0 if the message was processed, or 1 if the message was not processed.
Remarks
The base class handles the following messages:
- WM_CLOSE
- WM_MOVE
- WM_PALETTECHANGED
- WM_QUERYNEWPALETTE
- WM_SIZE
- WM_SYSCOLORCHANGE
A derived class can override this method to handle other messages. The derived class should call the base class method to handle any messages that the derived class ignores.
Requirements
| Requirement | Value |
|---|---|
| Header |
|
| Library |
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