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28 
29 /****************************************************************************
30  *  Author: Thomas E. Dickey                    1997-on                     *
31  ****************************************************************************/
32 
33 #include <curses.priv.h>
34 
35 MODULE_ID("$Id: define_key.c,v 1.13 2006/12/30 23:23:31 tom Exp $")
36 
37 NCURSES_EXPORT(int)
38 define_key(const char *str, int keycode)
39 {
40     int code = ERR;
41 
42     T((T_CALLED("define_key(%s,%d)"), _nc_visbuf(str), keycode));
43     if (SP == 0) {
44 	code = ERR;
45     } else if (keycode > 0) {
46 	unsigned ukey = (unsigned) keycode;
47 
48 	if (str != 0) {
49 	    define_key(str, 0);
50 	} else if (has_key(keycode)) {
51 	    while (_nc_remove_key(&(SP->_keytry), ukey))
52 		code = OK;
53 	}
54 	if (str != 0) {
55 	    if (key_defined(str) == 0) {
56 		if (_nc_add_to_try(&(SP->_keytry), str, ukey) == OK) {
57 		    code = OK;
58 		} else {
59 		    code = ERR;
60 		}
61 	    } else {
62 		code = ERR;
63 	    }
64 	}
65     } else {
66 	while (_nc_remove_string(&(SP->_keytry), str))
67 	    code = OK;
68     }
69     returnCode(code);
70 }
71