制作一个基于MFC对话框的OpenGL类

基于MFC对话框的OpenGL类：COpenGL，可以在对话框程序中使用OpenGL了，并且提供了全屏与非全屏转换的两个函数，很容易使用，速度快。-Create a MFC dialog based on the OpenGL-type MFC dialog-based OpenGL category: COpenGL, in the dialog box procedure can be used in OpenGL, and it provides a full screen and non-full-screen conversion of the two functions, is easy to use, fast .