void Progress::Process()
{
	if(!IsOpen()) {
		dword t = msecs();
		if((int)(t - show_time) >= show_delay) {
			Create(); // !!! no top-level window manipulation in non-main thread
			show_time = t;
		}
	}
	if(IsOpen()) {
		GuiSleep(0); // no message processing in non-main thread
		ProcessEvents();
	}
}