模拟Windows已用程序中的最小化、最大化、关闭按钮所实现的功能。可以将上面的手画图像改为漂亮的图片，就和普通的应哟过程序效果一样了。-Windows simulation has been used to the procedures to minimize, maximize, close button by the function. Can be above the hands of painting images to a pretty picture, and the general procedures should yo off the same results.