这个代码教你如何制作曲线控件，对一些自控工程开发人员可能会有帮助！-the code to teach you how to make a curve control, for some control project developers may help!

自动关机,可按用户要求设置,方便自控力差的人员控制时间,非常的好用-Automatic shutdown, user requirements can be set up to facilitate self-control is weak to control time, very easy to use