NetBSD/lib/libmenu/menu_post.3

.\"	$NetBSD: menu_post.3,v 1.4 2001/04/29 19:07:07 wiz Exp $
.\"
.\" Copyright (c) 1999
.\"	Brett Lymn - blymn@baea.com.au, brett_lymn@yahoo.com.au
.\"
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.Dd September 10, 1999
.Dt MENU_POST 3
.Os
.Sh NAME
.Nm post_menu
.Nm unpost_menu
.Nd post (draw) or unpost a menu
.Sh LIBRARY
.Lb libmenu
.Sh SYNOPSIS
.Fd #include <menu.h>
.Ft int
.Fn post_menu "MENU *menu"
.Ft int
.Fn unpost_menu "MENU *menu"
.Sh DESCRIPTION
The
.Fn post_menu
function causes the menu to be drawn on the screen.  Any functions
defined by either
.Fn set_menu_init
or
.Fn set_item_init
(see
.Xr menu_hook 3 )
are called before the menu is placed on the screen.  The
.Fn unpost_menu
does the opposite, it removes a menu from the screen.  Any functions
defined by both
.Fn set_menu_term
and
.Fn set_item_term
(see
.Xr menu_hook 3 )
are called prior to the menu's removal.
.Sh RETURN VALUES
The functions return one of the following error values:
.Pp
.Bl -tag -width E_NOT_CONNECTED -compact
.It Er E_OK
The function was successful.
.It Er E_SYSTEM_ERROR
There was a system error during the call.
.It Er E_BAD_ARGUMENT
One or more of the arguments passed to the function was incorrect.
.It Er E_POSTED
The menu is already posted.
.It Er E_BAD_STATE
The function was called from within an initialisation or termination
routine.
.It Er E_NO_ROOM
The menu does not fit within the subwindow.
.It Er E_NOT_CONNECTED
The item is not connected to a menu.
.El
.Sh SEE ALSO
.Xr curses 3 ,
.Xr menu_hook 3 ,
.Xr menus 3
.Sh NOTES
The header
.Pa <menu.h>
automatically includes both
.Pa <curses.h>
and
.Pa <eti.h> .