GtkTearoffMenuItem
   Menu item used to tear off and reattach its menu.
  
Object Hierarchy
Direct subclasses
None.
Description
   
    A GtkTearoffMenuItem is a dedicated type of 
    GtkMenuItem that can be prepended to a menu
    in order to give the user the option of tearing off the popped-up menu
    from its parent object (usually a menu item in a 
    GtkMenuBar), and keeping it within an independant,
    non-resizeable GtkWindow of its own.
   
   
    The widget appears as a dotted line across the top of the menu when
    the menu is attached to a parent object, or as a dotted line with a
    left-pointing arrow where the menu is detached.  Clicking on the dotted
    line detaches an attached menu, and clicking on the arrow of a detached
    menu re-attaches it to the parent.
   
  
Constructor
 --
   Creates the means to tear off a menu.