WM_TIMER
The WM_TIMER
message is posted to the installing thread s message queue or sent to the
appropriate TimerProc
callback function after each interval specified in the SetTimer function
used to install a timer.
WM_TIMER
wTimerID = wParam; // timer identifier
tmprc = (TIMERPROC *) lParam; // address of timer
callback
Parameters
wTimerID
Value of wParam.
Specifies the timer identifier.
tmprc
Value of lParam.
Points to an application-defined callback function that was passed to the SetTimer function when the timer
was installed. If the tmprc parameter is not NULL, Windows passes the
WM_TIMER message to the specified callback function rather than posting the
message to the thread s message queue.
Return Values
An
application should return zero if it processes this message.
Remarks
The DispatchMessage
function forwards this message when no other messages are in the thread s
message queue.
See Also