/// <summary>
/// Constructor
/// </summary>
/// <param name="period_ms"></param>
/// <param name="type"></param>
public MultimediaTimer(int period_ms)
{
this.Tick = 0;
this.Period_ms = period_ms;
// Define tick period
this._TickPeriod = TimeSpan.FromMilliseconds(Period_ms);
// save callback to prevent the garbage collector to release it
this._LPTimerCallBack = m_LPTimerCallBack;
}
/// <summary>
/// Stop the timer
/// </summary>
/// <returns></returns>
public bool Stop()
{
// Terminate multimedia time event
int err = timeKillEvent(_TimerId);
// release callbacks for garbage collector
this._LPTimerCallBack = null;
this.Handler = null;
// Ensure all callbacks are drained before leaving to caller
for (int i = 0; i < 10; i++)
{
Thread.Sleep(this.Period_ms);
}
// Restore OS granularity
RestoreTickGranularityOnWindows();
return(err == 0);
}
static protected extern int timeSetEvent(int delay, int resolution, _LPTimeCallbackType handler, IntPtr user, int eventType);
