说明：  本程序主要演示如何采用MFC编制，输入尺寸参数可以绘制立方体，是vc++绘制三维图形的好例子，对初学三维编程很有帮助。
(This program mainly demonstrates how to use MFC programming and input size parameters to draw cubes. It is a good example of VC++drawing 3D graphics and is very helpful for beginners in 3D programming.)