void CMMTimerDemoDlg::OnButtonStartTimer()
{
// check the timer's capabilities
TIMECAPS timeCaps;
if ( timeGetDevCaps(&timeCaps, sizeof(timeCaps)) !=TIMERR_NOERROR){
AfxMessageBox(_T("Failed to get capabilities."));
return;
}

// set the period of the timer
m_uiPeriod = timeCaps.wPeriodMin;
if ( timeBeginPeriod(m_uiPeriod) != TIMERR_NOERROR) {
AfxMessageBox(_T("Failed to Begin Period."));
return;
}

// start the timer
m_uiTimer = timeSetEvent(
1000, // delay in ms
m_uiPeriod, // resolution
TimerProcedure, // callback procdure
NULL, // user data
TIME_PERIODIC); //
if (m_uiTimer == 0){
AfxMessageBox(_T("Failed to start timer."));
return;
}
}