WM_TIMER message
Posted to the installing thread's message queue when a timer expires. The message is posted by the GetMessage or PeekMessage function.
#define WM_TIMER 0x0113
Parameters
-
wParam [in]
-
The timer identifier.
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lParam [in]
-
A pointer to an application-defined callback function that was passed to the SetTimer function when the timer was installed.
Return value
Type: LRESULT
An application should return zero if it processes this message.
Remarks
You can process the message by providing a WM_TIMER case in the window procedure. Otherwise, DispatchMessage will call the TimerProc callback function specified in the call to the SetTimer function used to install the timer.
The WM_TIMER message is a low-priority message. The GetMessage and PeekMessage functions post this message only when no other higher-priority messages are in the thread's message queue.
Requirements
| Requirement | Value |
|---|---|
| Minimum supported client |
Windows 2000 Professional [desktop apps only] |
| Minimum supported server |
Windows 2000 Server [desktop apps only] |
| Header |
|
See also
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Reference
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Conceptual