X-Git-Url: http://ncurses.scripts.mit.edu/?a=blobdiff_plain;f=man%2Fdefine_key.3x;h=fcf8bee2bc34caaecfe52b5ee302d9cbd10b7f19;hb=894a177fd5228cdbe790bd1dc9435bd435c29681;hp=216a3cbce4b6a22c9af127a6765aa2a2650a4e5d;hpb=027ae42953e3186daed8f3882da73de48291b606;p=ncurses.git

diff --git a/man/define_key.3x b/man/define_key.3x
index 216a3cbc..fcf8bee2 100644
--- a/man/define_key.3x
+++ b/man/define_key.3x
@@ -1,5 +1,6 @@
 .\"***************************************************************************
-.\" Copyright (c) 1998-2004,2006 Free Software Foundation, Inc.              *
+.\" Copyright 2018-2022,2023 Thomas E. Dickey                                *
+.\" Copyright 1998-2010,2017 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            *
@@ -28,38 +29,42 @@
 .\"
 .\" Author: Thomas E. Dickey 1997
 .\"
-.\" $Id: define_key.3x,v 1.12 2006/02/25 21:49:19 tom Exp $
-.TH define_key 3X ""
+.\" $Id: define_key.3x,v 1.37 2023/10/07 21:19:07 tom Exp $
+.TH define_key 3X 2023-10-07 "ncurses 6.4" "Library calls"
 .SH NAME
-\fBdefine_key\fP \- define a keycode
+\fB\%define_key\fP \-
+define a \fIcurses\fR keycode
 .SH SYNOPSIS
-\fB#include <curses.h>\fP
-.sp
-\fBint define_key(const char *definition, int keycode);\fP
+.nf
+\fB#include <curses.h>
+.PP
+\fBint define_key(const char *\fIdefinition\fP, int \fIkeycode\fP);
+.fi
 .SH DESCRIPTION
-This is an extension to the curses library.
+This is an extension to the \fIcurses\fP library.
 It permits an application to define keycodes with their corresponding control
-strings, so that the ncurses library will interpret them just as it would
+strings, so that the \fIncurses\fP library will interpret them just as it would
 the predefined codes in the terminfo database.
 .PP
-If the given string is null, any existing definition for the keycode is
-removed.
+If \fIdefinition\fP is \fBNULL\fP,
+any existing one for the keycode is removed.
 Similarly, if the given keycode is negative or zero, any existing string
 for the given definition is removed.
 .SH RETURN VALUE
-The keycode must be greater than zero, else ERR is returned.
+Either \fIkeycode\fP must be greater than zero,
+or \fIdefinition\fP must be non-\fBNULL\fP,
+otherwise \fBERR\fP is returned.
+\fBERR\fP may also be returned if there is insufficient memory to allocate the
+data to store the definition.
+If no error is detected, \fBOK\fP is returned.
 .SH PORTABILITY
-These routines are specific to ncurses.  They were not supported on
-Version 7, BSD or System V implementations.  It is recommended that
-any code depending on them be conditioned using NCURSES_VERSION.
-.SH SEE ALSO
-\fBkeyok\fR(3X),
-\fBkey_defined\fR(3X).
+These routines are specific to \fIncurses\fP.
+They were not supported on
+Version 7, BSD or System V implementations.
+It is recommended that
+any code depending on them be conditioned using \fB\%NCURSES_VERSION\fP.
 .SH AUTHOR
-Thomas Dickey.
-.\"#
-.\"# The following sets edit modes for GNU EMACS
-.\"# Local Variables:
-.\"# mode:nroff
-.\"# fill-column:79
-.\"# End:
+Thomas Dickey
+.SH SEE ALSO
+\fB\%keyok\fP(3X),
+\fB\%key_defined\fP(3X)