https://invisible-island.net/ncurses/man/
menu_win(3x) Library calls menu_win(3x)
menu_win - make and break menu window and subwindow associations
#include <menu.h>
int set_menu_win(MENU *menu, WINDOW *win);
WINDOW *menu_win(const MENU *menu);
int set_menu_sub(MENU *menu, WINDOW *sub);
WINDOW *menu_sub(const MENU *menu);
int scale_menu(const MENU *menu, int *rows, int *columns);
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_menu returns the minimum size required for the
subwindow of menu.
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(3)).
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.
These routines emulate the System V menu library. They were not
supported on Version 7 or BSD versions.
Juergen Pfeifer. Manual pages and adaptation for new curses by Eric S.
Raymond.
curses(3x), curs_variables(3x), menu(3x)
ncurses 6.5 2024-03-16 menu_win(3x)