refresh window's labels

[Alex Biryukov <alex vabank kiev ua>]

Hi,
Is anybody know how to refresh labels of the main window, after change language of GUI ?
I use gettext, and change lang by setting environment variable:
  setenv("LANGUAGE", "es", 1);
 /* Make change known.  */
  {
    extern int  _nl_msg_cat_cntr;
    ++_nl_msg_cat_cntr;
  }
  
All of dialog boxes ok, because they created each time. But main window remain
in old language. Any idea ?

Thanks a lot.
Alex