redhat man page for scale_menu

menu_win(3X)															      menu_win(3X)

NAME
       menu_win - make and break menu window and subwindow associations

SYNOPSIS
       #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);

DESCRIPTION
       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.

RETURN VALUE
       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).

       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.

SEE ALSO
       curses(3X), menu(3X).

NOTES
       The header file <menu.h> automatically includes the header file <curses.h>.

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.

																      menu_win(3X)