there's not really the special event for that, it's just simulate an additional mouse motion before the tap, but for fullscreen win, should not do that, that's all, we do not have any new event here.
if we make a special event, it will mix it into g_Mouse, what will it be? a mouse motion not without dx and dy? which will break the mouse position tracing, who knowns what will it cause. if we not mix it into g_Mouse, it had to be handled in each place mouse event be handled, that's really not necessary for a fix of a workaround.