Posted to the installing thread's message queue when a timer expires. The message is posted by theGetMessage orPeekMessage 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 theSetTimer 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 aWM_TIMER case in the window procedure. Otherwise,DispatchMessage will call theTimerProc callback function specified in the call to theSetTimer function used to install the timer.

TheWM_TIMER message is a low-priority message. TheGetMessage andPeekMessage 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