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.\"***************************************************************************
.\" Copyright 2018-2023,2024 Thomas E. Dickey *
.\" Copyright 1998-2010,2015 Free Software Foundation, Inc. *
.\" *
.\" Permission is hereby granted, free of charge, to any person obtaining a *
.\" copy of this software and associated documentation files (the *
.\" "Software"), to deal in the Software without restriction, including *
.\" without limitation the rights to use, copy, modify, merge, publish, *
.\" distribute, distribute with modifications, sublicense, and/or sell *
.\" copies of the Software, and to permit persons to whom the Software is *
.\" furnished to do so, subject to the following conditions: *
.\" *
.\" The above copyright notice and this permission notice shall be included *
.\" in all copies or substantial portions of the Software. *
.\" *
.\" THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS *
.\" OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF *
.\" MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. *
.\" IN NO EVENT SHALL THE ABOVE COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, *
.\" DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR *
.\" OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR *
.\" THE USE OR OTHER DEALINGS IN THE SOFTWARE. *
.\" *
.\" Except as contained in this notice, the name(s) of the above copyright *
.\" holders shall not be used in advertising or otherwise to promote the *
.\" sale, use or other dealings in this Software without prior written *
.\" authorization. *
.\"***************************************************************************
.\"
.\" $Id: menu_pattern.3x,v 1.38 2024/03/16 15:35:01 tom Exp $
.TH pattern 3MENU 2024-03-16 "ncurses 6.5" "Library calls"
.SH NAME
\fBset_menu_pattern\fP,
\fBmenu_pattern\fP \-
set and get a menu's pattern buffer
.SH SYNOPSIS
.nf
\fB#include <menu.h>
.PP
\fBint set_menu_pattern(MENU *\fImenu\fP, const char *\fIpattern\fP);
\fBchar *menu_pattern(const MENU *\fImenu\fP);
.fi
.SH DESCRIPTION
Every menu has an associated pattern match buffer.
As input events that are
printable characters come in, they are appended to this match buffer
and tested for a match, as described in \fB\%driver\fP(3MENU).
.PP
The function \fBset_menu_pattern\fP sets the pattern buffer for the given menu
and tries to find the first matching item.
If it succeeds, that item becomes
current; if not, the current item does not change.
.PP
The function \fBmenu_pattern\fP returns the pattern buffer of the given
\fImenu\fP.
.SH RETURN VALUE
The function \fBmenu_pattern\fP returns a pointer,
which is \fBNULL\fP if the \fImenu\fP parameter is \fBNULL\fP.
Otherwise, it is a pointer to a string which is empty
if no pattern has been set.
It does not set \fBerrno\fP.
.PP
The function \fBset_menu_pattern\fP may return the following error codes:
.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_BAD_STATE
Routine was called from an initialization or termination function.
.TP 5
.B E_NOT_CONNECTED
No items are connected to menu.
.TP 5
.B E_NO_MATCH
Character failed to match.
.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.
.SH AUTHORS
Juergen Pfeifer.
Manual pages and adaptation for new curses by Eric S. Raymond.
.SH SEE ALSO
\fB\%ncurses\fP(3NCURSES),
\fB\%menu\fP(3MENU)
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