define_key(3x)                   Library calls                  define_key(3x)
       define_key - define a curses function key code
       #include <curses.h>
       int define_key(const char * definition, int key-code);
       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
       terminal type.
       A definition of  NULL  removes  any  existing  binding  from  key-code.
       Similarly,  a  non-positive  key-code  removes  an existing binding for
       definition, if any.
       define_key returns ERR if
       o   definition is NULL and key-code is nonpositive, or
       o   insufficient memory is available to bind definition to key-code.
       Otherwise, define_key returns OK.
       define_key is an ncurses extension.
       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.
       Thomas Dickey
       curses(3x), keybound(3x), keyok(3x), key_defined(3x), terminfo(5)
ncurses 6.5                       2024-12-28                    define_key(3x)