menu_win - make and break menu window and subwindow associations
int set_menu_win(MENU *menu, WINDOW
WINDOW *menu_win(const MENU *menu);
int set_menu_sub(MENU *menu, WINDOW
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:
The header file <menu.h> automatically includes the header file <curses.h>.
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.