Once the application has set up the proper menu structures, linked them
into a list and attached the list to a window, the menu system completely
handles the menu display.  The menu strip is submitted to Intuition and
attached to the window by calling the function setmenustrip().

    BOOL SetMenuStrip( struct Window *window, struct Menu *menu );

setmenustrip() always returns true.  this function can also be used to
attach a single menu strip to multiple windows by calling SetMenuStrip()
for each window (see below).

Any menu strip attached to a window must be removed before the window is
closed.  To remove the menu strip, call clearmenustrip().

    void ClearMenuStrip( struct Window *window );

The menu example below demonstrates how to use these functions with a
simple menu strip.