在vc++开发的基于mfc和opengl显示的一个荷花闭合展开的程序。点击屏幕左上角浮动窗口菜单的按钮，即可以看到荷花慢慢的展开和闭合。-A lotus-based mfc opengl display vc++ development and closed the expanded program. Click on the upper left corner of the floating window menu button, you can see the lotus slowly un