对菜单栏进行修改，包括对他的显示效果的更改和在菜单栏上实现鼠标动作的响应，主要是仔细看看菜单栏的大致实现功能，更进一步的了解MFC编程实现-To modify the menu bar, including his show the effect of the change and the response of mouse action on the menu bar, which is carefully have a look roughly realize the function of

弹出式菜单实现。点击鼠标右键弹出菜单，单击菜单运行相应的响应函数。-Pop-up menu implementation. Right-click pop-up menu, click the menu runs the appropriate response function.