仿QQ窗口靠边自动收缩隐藏效果。拖动软件到屏幕顶部软件收缩看不见，鼠标移动到屏幕顶部软件显示出来，拖动软件到屏幕左边软件自动变为屏幕高度。-Imitation QQ window aside automatically shrink hide the effect, drag the software to the top of the screen shrink invisible software, move the mouse to the top of the software scre