virtual Image MouseEvent(int event, Point p, int zdelta, dword keyflags)
	{
		if (keyflags & K_MOUSEMIDDLE) {
			switch (event) {
				case LEFTDOWN:
					MiddleDown(p, keyflags);
					break;
				case LEFTDOUBLE:
					MiddleDouble(p, keyflags);
					break;
//..Etc.
				default:
					return Ctrl::MouseEvent(event, p, zdelta, keyflags);
			}
		}
		else
			return Ctrl::MouseEvent(event, p, zdelta, keyflags);
		return Image::Arrow();
	};