• NAME
  
  key_defined - check if a keycode is defined
• SYNOPSIS
  
  #include <curses.h>
  
  int key_defined(const char *definition);
• DESCRIPTION
  
  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
  
  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
  
  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
  
  define_key(3X).
• AUTHOR
  
  Thomas Dickey.

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