NAME | SYNOPSIS | DESCRIPTION | RETURN VALUE | PORTABILITY | SEE ALSO | AUTHOR | COLOPHON 

key_defined(3X)                                              key_defined(3X)

NAME         top

       key_defined - check if a keycode is defined

SYNOPSIS         top

       #include <curses.h>
       int key_defined(const char *definition);

DESCRIPTION         top

       This is an extension to the curses library.  It permits an
       application to determine if a string is currently bound to any
       keycode.

RETURN VALUE         top

       If the string is bound to a keycode, its value (greater than zero) is
       returned.  If no keycode is bound, zero is returned.  If the string
       conflicts with longer strings which are bound to keys, -1 is
       returned.

PORTABILITY         top

       These routines are specific to ncurses.  They were not supported on
       Version 7, BSD or System V implementations.  It is recommended that
       any code depending on them be conditioned using NCURSES_VERSION.

SEE ALSO         top

       define_key(3X).

AUTHOR         top

       Thomas Dickey.

COLOPHON         top

       This page is part of the ncurses (new curses) project.  Information
       about the project can be found at 
       ⟨https://www.gnu.org/software/ncurses/ncurses.html⟩.  If you have a
       bug report for this manual page, send it to
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                                                             key_defined(3X)