scale_menu man page on FreeBSD

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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 sub‐
       window  displays the items of the menu that are currently available for
       selection.

       The first four functions get and set those windows.  It is  not	neces‐
       sary  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  sub‐
       window 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 sup‐
       ported on Version 7 or BSD versions.

AUTHORS
       Juergen Pfeifer.	 Manual pages and adaptation for new curses by Eric S.
       Raymond.

								  menu_win(3X)
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