用VC++结合OPENGL编写的屏幕保护程序源代码，三维场景为蝴蝶飞舞-Combined with VC++ OPENGL screen saver written in the source code, three-dimensional scene as a butterfly fluttering

openGL书本上程序源码。第2章欢迎程序，第3章北斗七星和彩虹模型，第4章旋转的蝴蝶和纸飞机模型。 -openGL books on the program source code. Chapter 2, welcome to the program, Chapter 3 of the Big Dipper and the Rainbow model, Chapter 4, the rotation of the butterfly paper airplane model.