封装了一个在MFC对话框下来开发的OpenGL类：MLGL，该类基本实现了完全封装，使用时无需在对话框初始化函数中做初始化。将MLGL类与图画控件关联即可用！另外可以仿造程序中Test类继承MLGL类重载Draw3D()函数开发！-Encapsulates an MFC dialog box down the development of OpenGL classes: MLGL, the basic realization of such a complete package, no need

基于对话框，在PICTURE控件中绘图的设置-Based on the dialog box, in the PICTURE control the drawing set