OSG是一个图形软件开发包，它封装了OpenGL；该程序实现了将VC的MFC和OSG的osgProducer::Viewer相结合，实现了界面用MFC来实现；-OSG is a graphical software development kits, it Packaging OpenGL; The program will be the VC of the MFC and OSG osgProducer : : Viewer combined to achieve the interface