Can't redraw labels in gtk_dialog_new_with_buttons

[Vanko Eugen <vanko stonline sk>]

Hi 2 all!

I have preferences widow in which after pressing OK I need to show modal window  while long counting... 

I have this code:

chan_win=gtk_dialog_new_with_buttons("Channels Setup",GTK_WINDOW(main_win),GTK_DIALOG_MODAL,NULL);
label=gtk_label_new("Counting");
gtk_container_add(GTK_CONTAINER(GTK_DIALOG(chan_win)->vbox),label);
label=gtk_label_new("Please wait...");
gtk_container_add(GTK_CONTAINER(GTK_DIALOG(chan_win)->vbox),label);
gtk_dialog_set_has_separator(GTK_DIALOG(chan_win),FALSE);
gtk_widget_show_all(chan_win);
while (gtk_events_pending()) gtk_main_iteration();
...
//large counting
...
gtk_widget_destroy(chan_win);

The problem is: while (gtk_events_pending()) gtk_main_iteration(); redraw only window, not labels...
Can somebody help me?

Thx, fuuzuu