需要有OpenGL的库文件glut32.dll 运行后,用鼠标点击一次左上方的小图形,然后在空白区域点鼠标,就可根据小图形的指示画出相应的图形.-need OpenGL libraries glut32.dll operation, and click the top left of a small graphic, and then click the mouse regional gaps can be under the direction of small graphics to d