Activates the specified waitable timer. When the due time arrives, the timer is signaled and the thread that set the timer calls the optional completion routine. Syntax BOOL SetWaitableTimer( [in] HANDLE hTimer, [in] const LARGE_INTEGER *lpDueTime, [in] LONG lPeriod, [in, optional] PTIMERAPCROUTINE pfnCompletionRoutine, [in, optional] LPVOID lpArgToCompletionRoutine, [in] BOOL fResume ); Parameter

