key_defined3x
Obtain key code for an ncurses function key definition
Usage
#include <curses.h>
int key_defined(const char * definition);
Overview
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.