TCHAR buf[500];
TCHAR buf[256];
error_box (const char *title){	    TCHAR buf[500];    DWORD last_err;    last_err = GetLastError ();    FormatMessage (FORMAT_MESSAGE_FROM_SYSTEM, NULL, last_err, 		   MAKELANGID (LANG_NEUTRAL, SUBLANG_DEFAULT), 		   buf, sizeof (buf)-1, NULL);    MessageBox (NULL, buf, title, MB_OK);}