It has been discussed a few times in this forum, but so far it is impossible to 'know' when the mouse cursor is above a certain menu item. This information might be used for example to display some context help.
Hence I would suggest that using the menu callback of the respective menu item it should be possible to be notified about the mouse cursor position once it is over the area of the respective menu entry, e.g. by providing a MOUSE_OVER_MENU_ITEM event.
