key_defined(3X)                  Library calls                 key_defined(3X)

NAME
       key_defined - obtain key code for an ncurses function key definition

SYNOPSIS
       #include <curses.h>

       int key_defined(const char * definition);

DESCRIPTION
       The key_defined ncurses extension permits a curses application to
       determine the function key code, if any, to which the string definition
       is bound.

RETURN VALUE
       key_defined returns the first key code to which definition is bound if
       any exists.  If none does, it returns 0.  If definition is a prefix of
       another bound definition, key_defined returns -1.

EXTENSIONS
       key_defined is an ncurses extension.

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

AUTHORS
       Thomas Dickey

SEE ALSO
       curses(3X), define_key(3X), keybound(3X), keyok(3X)

ncurses 6.6                       2025-10-04                   key_defined(3X)