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.\"***************************************************************************
.\" Copyright 2018-2023,2024 Thomas E. Dickey *
.\" Copyright 1999-2010,2016 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. *
.\"***************************************************************************
.\"
.\" Author: Thomas E. Dickey 1999-on
.\"
.\" $Id: curs_extend.3x,v 1.46 2024/03/16 15:35:01 tom Exp $
.TH extensions 3NCURSES 2024-03-16 "ncurses 6.5" "Library calls"
.ie \n(.g \{\
.ds `` \(lq
.ds '' \(rq
.\}
.el \{\
.ie t .ds `` ``
.el .ds `` ""
.ie t .ds '' ''
.el .ds '' ""
.\}
.SH NAME
\fB\%curses_version\fP,
\fB\%use_extended_names\fP \-
miscellaneous \fIcurses\fR extensions
.SH SYNOPSIS
.nf
\fB#include <ncursesw/curses.h>
.PP
\fBconst char * curses_version(void);
\fBint use_extended_names(bool \fIenable\fP);
.fi
.SH DESCRIPTION
These functions are extensions to the curses library
which do not fit easily into other categories.
.SS curses_version
Use \fBcurses_version\fP
to get the version number, including patch level of the library,
prefixed by \*(``ncurses\*('', e.g.,
.RS
.sp
.B ncurses 5.0.19991023
.RE
.SS use_extended_names
The \fBuse_extended_names\fP
function controls whether the calling application
is able to use user-defined or nonstandard names
which may be compiled into the terminfo
description, i.e., via the terminfo or termcap interfaces.
Normally these names are available for use, since the essential decision
is made by using the \fB\-x\fP option of \fBtic\fP to compile
extended terminal definitions.
However you can disable this feature
to ensure compatibility with other implementations of curses.
.SH RETURN VALUE
\fBcurses_version\fP returns a pointer to static memory; you should not free
this in your application.
.PP
\fBuse_extended_names\fP returns the previous state, allowing you to
save this and restore it.
.SH EXTENSIONS
These functions are \fB\%ncurses\fP(3NCURSES) extensions,
and are not found in SVr4
.IR curses ,
4.4BSD
.IR curses ,
or any other previous curses implementation.
.SH PORTABILITY
Applications employing
.I \%ncurses
extensions should condition their use on the visibility of the
.B \%NCURSES_VERSION
preprocessor macro.
.SH AUTHORS
Thomas Dickey.
.SH SEE ALSO
\fB\%getch\fP(3NCURSES),
\fB\%mouse\fP(3NCURSES),
\fB\%print\fP(3NCURSES),
\fB\%util\fP(3NCURSES),
\fB\%default_colors\fP(3NCURSES),
\fB\%define_key\fP(3NCURSES),
\fB\%keybound\fP(3NCURSES),
\fB\%keyok\fP(3NCURSES),
\fB\%resizeterm\fP(3NCURSES),
\fB\%wresize\fP(3NCURSES)
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