/// <summary>
/// Pumps messages for a fixed number of MS
/// </summary>
/// <param name="numMilliseconds">
/// Number of milliseconds to wait.
/// </param>
public static void DoEvents(int numMilliseconds)
{
Stopwatch sw = new Stopwatch();
sw.Start();
while (sw.ElapsedMilliseconds < numMilliseconds)
{
Waiter.DoEvents();
ComponentDispatcher.RaiseIdle();
System.Threading.Thread.Sleep(0);
}
sw.Stop();
}
/// <summary>
/// Processes all UI messages currently in the message queue.
/// </summary>
public static void DoEvents()
{
// Create new nested message pump.
DispatcherFrame nestedFrame = new DispatcherFrame();
// Dispatch a callback to the current message queue, when getting called,
// this callback will end the nested message loop.
// note that the priority of this callback should be lower than the that of UI event messages.
DispatcherOperation exitOperation = Dispatcher.CurrentDispatcher.BeginInvoke(
DispatcherPriority.Background, exitFrameCallback, nestedFrame);
// pump the nested message loop, the nested message loop will immediately
// process the messages left inside the message queue.
Dispatcher.PushFrame(nestedFrame);
// If the "exitFrame" callback doesn't get finished, Abort it.
if (exitOperation.Status != DispatcherOperationStatus.Completed)
{
exitOperation.Abort();
}
ComponentDispatcher.RaiseIdle();
}