WM_TIMER message (Windows)

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.

lParam [in]

A pointer to an application-defined callback function that was passed to the SetTimer function when the timer was installed.

Return value

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

See also

Reference

GetMessage

PeekMessage

SetTimer

TimerProc

Conceptual

Timers

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Build date: 9/11/2011