资料来源 : Free On-Line Dictionary of Computing

context-sensitive menu
     
         A {menu} which appears in response to a
        user action (typically a {mouse} click) and whose contents are
        determined by which {application window} was clicked or has
        the {input focus}.
     
        Most {GUI}s use a secondary mouse button (right or middle) to
        call up a context-sensitive menu as the {primary mouse button}
        is normally used to interact with objects which are already
        visible.
     
        The context-sensitive menu often contains functions that are
        also available in a {menu bar} but the context-sensitive menu
        provides quick access to a subset of functions that are
        particularly relevant to the window area clicked on.
     
        The {RISC OS} {WIMP} uses only context-sensitive menus (always
        invoked using the middle mouse button).  This saves screen
        space and reduces mouse movement compared to a {menu bar}.
     
        (1999-09-22)