实现openGL图形显示的基本功能，对一些常见图形等进行生成和显示，为opengl编程者提供一个入门的特例，调试需要oengl相关头文件及动态链接库。-OpenGL realize the basic functions of graphical display of some common graphics, etc. to generate and display, for opengl programming to provide a special case of entry, debu