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.\" Author: Thomas E. Dickey 1999
.\"
.\" $Id: keybound.3x,v 1.40 2024/06/08 23:25:57 tom Exp $
.TH keybound 3X 2024-06-08 "ncurses @NCURSES_MAJOR@.@NCURSES_MINOR@" "Library calls"
.SH NAME
\fB\%keybound\fP \-
get definition of a \fIcurses\fP function key code
.SH SYNOPSIS
.nf
\fB#include <curses.h>
.PP
\fBchar * keybound(int \fIkey-code\fP, int \fIcount\fP);
.fi
.SH DESCRIPTION
The
.B \%keybound
.I \%ncurses
extension permits a
.I curses
application to obtain the value of the string
.I bound
to the function key
.IR key-code ";"
see \fB\%wgetch\fP(3X)
(wide-character API users: \fB\%wget_wch\fP(3X)).
By default,
such bindings are string capabilities from the
.I \%term\%info
database entry corresponding to the terminal type.
The application can non-destructively and repeatedly
override such definitions with
\fB\%define_key\fP(3X),
as if by pushing new definitions onto a stack.
The
.I count
parameter accesses the
.IR n th
most recently defined binding;
.B 0
selects the binding that is used on input.
.SH RETURN VALUE
If
.I key-code
corresponds to a function key defined
by the application
or the terminal type in use,
.B \%keybound
allocates and returns a string
that must be freed by the application.
.B \%keybound
returns
.B NULL
if
.I key-code
is not positive
or if it does not correspond to a key code definition.
.SH EXTENSIONS
.B \%keybound
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.
.SH AUTHORS
Thomas Dickey
.SH SEE ALSO
\fB\%curses\fP(3X),
\fB\%define_key\fP(3X),
\fB\%keyok\fP(3X),
\fB\%key_defined\fP(3X),
\fB\%terminfo\fP(5)