set_menu_window(3)                                   set_menu_window(3)

  menu_win()

  NAME

    set_menu_window(), menu_window(), set_menu_sub(), menu_sub(),
    scale_window() - make and break menu window and subwindow associations

  SYNOPSIS

    #include 

    int set_menu_window(MENU *menu, WINDOW *win);
    WINDOW *menu_window(MENU *menu);
    int set_menu_sub(MENU *menu, WINDOW *sub);
    WINDOW *menu_sub(MENU *menu);
    int scale_window(MENU *menu, int *rows,
                     int *columns);

  DESCRIPTION

    Every menu has an associated pair of curses windows. The menu window
    displays any title and border associated with the window; the menu
    subwindow displays the items of the menu that are currently available for
    selection.

    The first four functions get and set those windows. It is not necessary to
    set either window; by default, the driver code uses stdscr for both.

    In the set_ functions, window argument of NULL is treated as though it
    were stsdcr A menu argument of NULL is treated as a request to change the
    system default menu window or subwindow.

    The function scale_window(3) returns the minimum size required for the
    subwindow of menu.

  RETURN VALUE

    Routines that return pointers return NULL on error. Routines that return
    an integer return one of the following error codes:

    E_OK
        The routine succeeded.

    E_SYSTEM_ERROR
        System error occurred (see errno

    E_BAD_ARGUMENT
        Routine detected an incorrect or out-of-range argument.

    E_POSTED
        The menu has already been posted.

    E_NOT_CONNECTED
        No items are connected to the menu.

  SEE ALSO

    curses(3)

    menus(3)

  NOTES

    The header file  automatically includes the header file
    .

  PORTABILITY

    These routines emulate the System V menu library. They were not supported
    on Version 7 or BSD versions.