if (!(state & Qt::MouseButtonMask))
	{
		bool next_is_button_up = false;
        MSG msg1;
        if (PeekMessage(&msg1, msg.hwnd, WM_MOUSEFIRST, WM_MOUSELAST, PM_NOREMOVE))
            next_is_button_up = (msg1.message == WM_LBUTTONUP);
		if (! next_is_button_up)
			qt_button_down = 0;
	}