all_filter = gtk_file_filter_new ();
gtk_file_filter_set_name (all_filter, _("All Files"));
gtk_file_filter_add_pattern (all_filter, "*");
all_filter = gtk_file_filter_new ();
gtk_file_filter_set_name (all_filter, _("All Files"));
gtk_file_filter_add_pattern (all_filter, "*");