MFC框架下的opengl环境设置，同时还包括如何切分窗口使用多个视类-MFC opengl under the framework of environmental settings, also include how to split the use of multiple windows as the category

实现Opengl窗口框架，可以添加自己的程序，方便使用，并且实现静态窗口切分-To achieve Opengl window frame, can add their own procedures, easy to use, and the realization of the static window segmentation