man/menu_items.3x

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.\" $Id: menu_items.3x,v 1.34 2024/03/16 15:35:01 tom Exp $
.TH menu_items 3X 2024-03-16 "ncurses @NCURSES_MAJOR@.@NCURSES_MINOR@" "Library calls"
.SH NAME
\fBset_menu_items\fP,
\fBmenu_items\fP,
\fBitem_count\fP \-
make and break connections between items and menus
.SH SYNOPSIS
.nf
\fB#include <menu.h>
.PP
\fBint set_menu_items(MENU *\fImenu\fP, ITEM **\fIitems\fP);
\fBITEM **menu_items(const MENU *\fImenu\fP);
\fBint item_count(const MENU *\fImenu\fP);
.fi
.SH DESCRIPTION
The function \fBset_menu_items\fP changes the item pointer array of the given
\fImenu\fP.  The array must be terminated by a \fBNULL\fP.
.PP
The function \fBmenu_items\fP returns the item array of the given menu.
.PP
The function \fBitem_count\fP returns the count of items in \fImenu\fP.
.SH RETURN VALUE
The function \fBmenu_items\fP returns a pointer (which may be \fBNULL\fP).
It does not set \fBerrno\fP.
.PP
The function \fBitem_count\fP returns \fBERR\fP (the general \fBcurses\fP error
return value) if its \fImenu\fP parameter is \fBNULL\fP.
.PP
The function \fBset_menu_items\fP returns one of the following codes on error:
.TP 5
.B E_OK
The routine succeeded.
.TP 5
.B E_BAD_ARGUMENT
Routine detected an incorrect or out-of-range argument.
.TP 5
.B E_NOT_CONNECTED
No items are connected to the menu.
.TP 5
.B E_POSTED
The menu is already posted.
.TP 5
.B E_SYSTEM_ERROR
System error occurred (see \fBerrno\fP(3)).
.SH PORTABILITY
These routines emulate the System V menu library.
They were not supported on
Version 7 or BSD versions.
.PP
The SVr4 menu library documentation specifies the \fBitem_count\fP error value
as \-1 (which is the value of \fBERR\fP).
.SH AUTHORS
Juergen Pfeifer.
Manual pages and adaptation for new curses by Eric S. Raymond.
.SH SEE ALSO
\fB\%curses\fP(3X),
\fB\%menu\fP(3X)