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115 lines
6.1 KiB
HTML
115 lines
6.1 KiB
HTML
<!--
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****************************************************************************
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* Copyright 2018-2023,2024 Thomas E. Dickey *
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* Copyright 1998-2010,2017 Free Software Foundation, Inc. *
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* *
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* Permission is hereby granted, free of charge, to any person obtaining a *
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* copy of this software and associated documentation files (the *
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* "Software"), to deal in the Software without restriction, including *
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* without limitation the rights to use, copy, modify, merge, publish, *
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* distribute, distribute with modifications, sublicense, and/or sell *
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* copies of the Software, and to permit persons to whom the Software is *
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* furnished to do so, subject to the following conditions: *
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* *
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* The above copyright notice and this permission notice shall be included *
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* in all copies or substantial portions of the Software. *
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* *
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS *
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* OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF *
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* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. *
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* IN NO EVENT SHALL THE ABOVE COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, *
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* DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR *
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* OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR *
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* THE USE OR OTHER DEALINGS IN THE SOFTWARE. *
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* *
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* Except as contained in this notice, the name(s) of the above copyright *
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* holders shall not be used in advertising or otherwise to promote the *
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* sale, use or other dealings in this Software without prior written *
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* authorization. *
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****************************************************************************
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* Author: Thomas E. Dickey 1997
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* @Id: define_key.3x,v 1.52 2024/12/28 21:26:21 tom Exp @
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-->
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<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01//EN">
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<HTML>
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<HEAD>
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<meta http-equiv="Content-Type" content="text/html; charset=us-ascii">
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<meta name="generator" content="Manpage converted by man2html - see https://invisible-island.net/scripts/readme.html#others_scripts">
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<TITLE>define_key 3x 2024-12-28 ncurses 6.6 Library calls</TITLE>
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<link rel="author" href="mailto:bug-ncurses@gnu.org">
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</HEAD>
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<BODY>
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<H1 class="no-header">define_key 3x 2024-12-28 ncurses 6.6 Library calls</H1>
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<PRE>
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<STRONG><A HREF="define_key.3x.html">define_key(3x)</A></STRONG> Library calls <STRONG><A HREF="define_key.3x.html">define_key(3x)</A></STRONG>
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</PRE><H2><a name="h2-NAME">NAME</a></H2><PRE>
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<STRONG>define_key</STRONG> - define a <EM>curses</EM> function key code
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</PRE><H2><a name="h2-SYNOPSIS">SYNOPSIS</a></H2><PRE>
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<STRONG>#include</STRONG> <STRONG><curses.h></STRONG>
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<STRONG>int</STRONG> <STRONG>define_key(const</STRONG> <STRONG>char</STRONG> <STRONG>*</STRONG> <EM>definition</EM><STRONG>,</STRONG> <STRONG>int</STRONG> <EM>key-code</EM><STRONG>);</STRONG>
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</PRE><H2><a name="h2-DESCRIPTION">DESCRIPTION</a></H2><PRE>
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The <STRONG>define_key</STRONG> <EM>ncurses</EM> extension permits a <EM>curses</EM> application to <EM>bind</EM> a
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string <EM>definition</EM> to the function key <EM>key-code</EM> returned by <STRONG><A HREF="curs_getch.3x.html">wgetch(3x)</A></STRONG>
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(wide-character API users: <STRONG><A HREF="curs_get_wch.3x.html">wget_wch(3x)</A></STRONG>) when <STRONG><A HREF="curs_inopts.3x.html">keypad(3x)</A></STRONG> is enabled in
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a window and a function key is pressed. <EM>ncurses</EM> interprets such a
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binding as it does those in the <EM>terminfo</EM> database entry for the
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terminal type.
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A <EM>definition</EM> of <EM>NULL</EM> removes any existing binding from <EM>key-code</EM>.
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Similarly, a non-positive <EM>key-code</EM> removes an existing binding for
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<EM>definition</EM>, if any.
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</PRE><H2><a name="h2-RETURN-VALUE">RETURN VALUE</a></H2><PRE>
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<STRONG>define_key</STRONG> returns <STRONG>ERR</STRONG> if
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<STRONG>o</STRONG> <EM>definition</EM> is <EM>NULL</EM> and <EM>key-code</EM> is nonpositive, or
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<STRONG>o</STRONG> insufficient memory is available to bind <EM>definition</EM> to <EM>key-code</EM>.
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Otherwise, <STRONG>define_key</STRONG> returns <STRONG>OK</STRONG>.
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</PRE><H2><a name="h2-EXTENSIONS">EXTENSIONS</a></H2><PRE>
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<STRONG>define_key</STRONG> is an <EM>ncurses</EM> extension.
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</PRE><H2><a name="h2-PORTABILITY">PORTABILITY</a></H2><PRE>
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Applications employing <EM>ncurses</EM> extensions should condition their use on
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the visibility of the <STRONG>NCURSES_VERSION</STRONG> preprocessor macro.
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NetBSD <EM>curses</EM> since 2.0 (2004) supports <EM>define</EM><STRONG>_</STRONG><EM>key</EM>.
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</PRE><H2><a name="h2-AUTHORS">AUTHORS</a></H2><PRE>
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Thomas Dickey
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</PRE><H2><a name="h2-SEE-ALSO">SEE ALSO</a></H2><PRE>
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<STRONG><A HREF="ncurses.3x.html">curses(3x)</A></STRONG>, <STRONG><A HREF="keybound.3x.html">keybound(3x)</A></STRONG>, <STRONG><A HREF="keyok.3x.html">keyok(3x)</A></STRONG>, <STRONG><A HREF="key_defined.3x.html">key_defined(3x)</A></STRONG>, <STRONG><A HREF="terminfo.5.html">terminfo(5)</A></STRONG>
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ncurses 6.6 2024-12-28 <STRONG><A HREF="define_key.3x.html">define_key(3x)</A></STRONG>
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</PRE>
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<div class="nav">
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<ul>
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<li><a href="#h2-NAME">NAME</a></li>
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<li><a href="#h2-SYNOPSIS">SYNOPSIS</a></li>
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<li><a href="#h2-DESCRIPTION">DESCRIPTION</a></li>
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<li><a href="#h2-RETURN-VALUE">RETURN VALUE</a></li>
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<li><a href="#h2-EXTENSIONS">EXTENSIONS</a></li>
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<li><a href="#h2-PORTABILITY">PORTABILITY</a></li>
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<li><a href="#h2-AUTHORS">AUTHORS</a></li>
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<li><a href="#h2-SEE-ALSO">SEE ALSO</a></li>
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</ul>
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</div>
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</BODY>
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</HTML>
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