Availability:C-language interface function
bool PL_get_wchars(term_t 
t, size_t *len, pl_wchar_t **s, unsigned flags)Wide-character version of PL_get_chars(). 
The flags argument is the same as for PL_get_chars(). 
Note that this operation may return a pointer into Prolog's‘buffer 
stack’(see section 
12.4.14).