If you turn off the menu option O_ONEVALUE (e.g., with
set_menu_opts or menu_opts_off; see menu_opts(3X)), 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
The function set_item_value returns one of the following:
E_OK The routine succeeded.
System error occurred (see errno(3)).
The menu driver could not process the request.
This page is part of the ncurses (new curses) project.
Information about the project can be found at
⟨https://www.gnu.org/software/ncurses/ncurses.html⟩. If you have
a bug report for this manual page, send it to
firstname.lastname@example.org. This page was obtained from the
project's upstream Git mirror of the CVS repository
⟨git://ncurses.scripts.mit.edu/ncurses.git⟩ on 2021-06-20. (At
that time, the date of the most recent commit that was found in
the repository was 2021-05-23.) If you discover any rendering
problems in this HTML version of the page, or you believe there
is a better or more up-to-date source for the page, or you have
corrections or improvements to the information in this COLOPHON
(which is not part of the original manual page), send a mail to