OpenGL有着很好的交互式程序设计接口，通过选定与反馈等机制可以很好的实现交互式绘图设计。再与MFC相结合，简直可以很容易的开发出相关的类CAD软件。

由OPENGL负责图元的创建和编辑以实现动画，由MFC负责与操作系统的信息交换。分工合作，层层实现

在主菜单上新建三个不同的菜单项分别实现生成图元，拖动图元，删除图元的功能。特别的，关于直线的拖动要用到橡皮直线技术。-OpenGL is a good interactive programming interface, through selected with the feedback mechanism can achieve good interactive graphics design. MFC with the combination, it can be easily related to the developed CAD software category. By the OpenGL graphic element responsible for the creation and editing of animation to achieve by MFC with the operating system of information exchange. Work together at every level to achieve the main menu on the new three different menu items were yuan was generated maps, scrolling map, delete map function. In particular, the straight-line drag on the use of rubber Linear Technology.