本实例将介绍在安装应用程序中需要实现关闭或重启计算机的功能。程序运行之后，通过单击窗体中的控制按钮就可以重新启动、关闭或者注销计算机。-The examples will describe the installation of the application needs to implement the functions shut down or restart the computer. After the program runs, the form by clicking the co