Provided by: ncurses-doc_6.4+20240113-1ubuntu2_all 

NAME
item_visible - check visibility of a menu item
SYNOPSIS
#include <menu.h> bool item_visible(const ITEM *item);
DESCRIPTION
A menu item is visible when it is in the portion of a posted menu that is mapped onto the screen (if the menu is scrollable, in particular, this portion will be smaller than the whole menu).
PORTABILITY
These routines emulate the System V menu library. They were not supported on Version 7 or BSD versions.
AUTHORS
Juergen Pfeifer. Manual pages and adaptation for new curses by Eric S. Raymond.
SEE ALSO
ncurses(3NCURSES), menu(3MENU) ncurses 6.4 2023-11-25 menu_visible(3MENU)