set_item_value, item_value - set and get menu item values

       Juergen Pfeifer.  Manual pages and adaptation for new curses by Eric S. Raymond.

       If  you turn off the menu option O_ONEVALUE (e.g., with set_menu_opts or menu_opts_off; see opts(3MENU)),
       the menu becomes multi-valued; that is, more than one item may simultaneously be selected.

       In a multi_valued menu, you can used set_item_value to select the given menu item (second argument  TRUE)
       or deselect it (second argument FALSE).

set_item_value, item_value - set and get menu item values

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

       The function set_item_value returns one of the following:

       E_OK The routine succeeded.

       E_SYSTEM_ERROR
            System error occurred (see errno(3)).

       E_REQUEST_DENIED
            The menu driver could not process the request.

ncurses(3NCURSES), menu(3MENU)

ncurses 6.5                                        2024-03-16                                  menu_value(3MENU)

#include<menu.h>intset_item_value(ITEM*item,boolvalue);boolitem_value(constITEM*item);