为VC++开发的WinForm窗体工具栏菜单添加鼠标提示功能，鼠标放在工具栏菜单上的时候，该项菜单的功能描述会出现，提醒用户点击此菜单所对应的功能-For VC++ development WinForm form toolbar menu to add mouse prompts the mouse on the toolbar menu, the menu function descr iption will appear to remind the user clicks on this menu corresponding