说明：  该程序主要利用opengl技术实现图像的显示，重点是MFC界面打开wrl三维图像，鼠标可以随意操纵3d模型，是建模的典型案例，建议初学人员下载使用。
(This program mainly uses OpenGL technology to display images, with a focus on opening the WRL 3D image on the MFC interface. The mouse can freely manipulate the 3D model, which is a typical case of modeling. It is recommended for beginners to download and use.)