資料來源 : Free On-Line Dictionary of Computing

pull-down menu
     
         (Or "drop-down menu", "pop-down menu") A
        {menu} in a {graphical user interface}, whose title is
        normally visible but whose contents are revealed only when the
        user activates it, normally by pressing the {mouse} button
        while the {pointer} is over the title, whereupon the menu
        items appear below the title.  The user may then select an
        item from the menu or click elsewhere, in either case the menu
        contents are hidden again.  A menu item is selected either by
        dragging the mouse from the menu title to the item and
        releasing or by clicking the title and then the item.
     
        When a pull-down menu appears in the main area of a window, as
        opposed to the {menu bar}, it may have a small,
        downward-pointing triangle to the right.
     
        Compare: {scrollable list}.
     
        (1999-09-22)