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define_key(3x)

define_key(3x)                   Library calls                  define_key(3x)

NAME
       define_key - define a curses function key code

SYNOPSIS
       #include <ncursesw/curses.h>

       int define_key(const char * definition, int key-code);

DESCRIPTION
       The define_key ncurses extension permits a curses application to bind a
       string  definition  to the function key key-code returned by wgetch(3X)
       (wide-character API users: wget_wch(3X)) when keypad(3X) is enabled  in
       a  window  and  a  function  key is pressed.  ncurses interprets such a
       binding as it does those in the terminfo database entry for the  termi‐
       nal type.

       A definition of NULL removes any existing binding from key-code.  Simi‐
       larly,  a non-positive key-code removes an existing binding for defini‐
       tion, if any.

RETURN VALUE
       define_key returns ERR if

       •   definition is NULL and key-code is nonpositive, or

       •   insufficient memory is available to bind definition to key-code.

       Otherwise, define_key returns OK.

EXTENSIONS
       define_key is an ncurses extension.

PORTABILITY
       Applications employing ncurses extensions should condition their use on
       the visibility of the NCURSES_VERSION preprocessor macro.

       NetBSD curses since 2.0 (2004) supports define_key.

AUTHORS
       Thomas Dickey


ATTRIBUTES
       See attributes(7) for descriptions of the following attributes:

       box; cbp-1 | cbp-1 l | l .  ATTRIBUTE TYPE ATTRIBUTE VALUE = Availabil‐
       ity   library/ncurses = Stability Uncommitted

SEE ALSO
       curses(3X), keybound(3X), keyok(3X), key_defined(3X), terminfo(5)



NOTES
       Source code for open source software components in Oracle  Solaris  can
       be found at https://www.oracle.com/downloads/opensource/solaris-source-
       code-downloads.html.

       This software was built from source available at:
       https://github.com/oracle/solaris-userland

       The original community source was downloaded from:
       https://invisible-mirror.net/archives/ncurses/cur‐
       rent/ncurses-6.5-20250614.tgz

       Further information about this software can be found on the open source
       community website at https://invisible-island.net/ncurses/.

ncurses 6.5                       2024-12-28                    define_key(3x)
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