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.\" Copyright 2018-2023,2024 Thomas E. Dickey                                *
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.\" Author: Thomas E. Dickey 1997
.\"
.\" $Id: keyok.3x,v 1.44 2024/06/08 23:26:27 tom Exp $
.TH keyok 3X 2024-06-08 "ncurses @NCURSES_MAJOR@.@NCURSES_MINOR@" "Library calls"
.
.de bP
.ie n  .IP \(bu 4
.el    .IP \(bu 2
..
.
.SH NAME
\fB\%keyok\fP \-
enable or disable a \fIcurses\fP function key code
.SH SYNOPSIS
.nf
\fB#include <curses.h>
.PP
\fBint keyok(int \fIkey-code\fP, bool \fIbf\fP);
.fi
.SH DESCRIPTION
The
.B \%keyok
.I \%ncurses
extension permits a
.I curses
application to disable a function key
.I key-code
returned by \fB\%wgetch\fP(3X)
(wide-character API users:
\fB\%wget_wch\fP(3X)).
Key codes that have been disabled can be re-enabled.
.I bf
indicates the desired enablement status.
This operation is more fine-grained than calling \fB\%keypad\fP(3X),
which affects
.I all
function keys.
.SH RETURN VALUE
.B \%keyok
returns
.B ERR
if
.bP
.I key-code
is nonpositive,
.bP
.I key-code
is not a recognized value,
or
.bP
enablement of
.I key-code
is already in the desired state.
.PP
Otherwise,
.B \%keyok
returns
.BR OK "."
.SH EXTENSIONS
.B \%keyok
is an
.I \%ncurses
extension.
.SH PORTABILITY
Applications employing
.I \%ncurses
extensions should condition their use on the visibility of the
.B \%NCURSES_VERSION
preprocessor macro.
.PP
NetBSD
.I curses
since 2.0 (2004) supports
.BR \%keyok "."
.SH AUTHORS
Thomas Dickey
.SH SEE ALSO
\fB\%curses\fP(3X),
\fB\%define_key\fP(3X),
\fB\%keybound\fP(3X),
\fB\%keyok\fP(3X),
\fB\%key_defined\fP(3X).