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.
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.