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