CGraph是一个外国人写的图形库，本文工程中的CGraph已经封装到了DLL，由于时间关系，我没做DEMO，此类库的详细介绍你可以到VCCODE搜索。-CGraph is a graphics library written by foreigners, this article has been CGraph engineering package to the DLL, due to time constraints, I did not do DEMO, a detailed descr