windows应用程序基本框架，只有空白的窗口和空白的对话框。适合初学者学习API编程，并在此基础上添加代码开发自己的窗口应用程序-windows application, the basic framework, and only a blank window and a blank dialog box. API suitable for beginners to learn programming, and on this basis, add the code to develop their own application window