public static void PushFrame(DispatcherFrame frame)
{
if (frame == null)
{
throw new ArgumentNullException("frame");
}
Dispatcher dis = CurrentDispatcher;
if (dis.HasShutdownFinished)
{
throw new InvalidOperationException("The Dispatcher has shut down");
}
if (frame.dispatcher != null)
{
throw new InvalidOperationException("Frame is already running on a different dispatcher");
}
if ((dis.flags & Flags.Disabled) != 0)
{
throw new InvalidOperationException("Dispatcher processing has been disabled");
}
frame.ParentFrame = dis.current_frame;
dis.current_frame = frame;
frame.dispatcher = dis;
dis.RunFrame(frame);
}
