Re: GTK Modal dialog

[Carlo <carlo-ag libero it>]

I've written such a test program, generating it by Glade and reproducing 
all the custom code from my main application, and ... *surprise*, it 
worked as expected, that is the little window with the progress bar is 
*modal*. The code snippet is as follows:

void UpdProgress (GtkWidget * dlg) {
  gint        i;
  gdouble     frac;
  GtkWidget * pbar;

  pbar = lookup_widget (dlg, "pbarProgress");
    for (i = 0; i < 1000; i ++) {
      g_usleep (10000);
      frac = (gdouble)i/ 1000;
      gtk_progress_bar_set_fraction (GTK_PROGRESS_BAR (pbar), frac);
      while (gtk_events_pending ()) {
        gtk_main_iteration ();
      }
    }
}

void on_btnCallModal_clicked (GtkButton * button,
                              gpointer    user_data) {
  GtkWidget * parent,
            * dlg;

  parent = lookup_widget (GTK_WIDGET (button), "winMain");
  /* activating progress window
   */
  dlg = create_winDlg ();
  gtk_window_set_title         (GTK_WINDOW (dlg), "Simulating...");
  gtk_window_set_position      (GTK_WINDOW (dlg),
                                GTK_WIN_POS_CENTER_ON_PARENT);
  gtk_window_set_modal         (GTK_WINDOW (dlg), TRUE);
  gtk_window_set_transient_for (GTK_WINDOW (dlg), GTK_WINDOW (parent));
  gtk_widget_show (dlg);

  UpdProgress (dlg);
  gtk_widget_destroy (dlg);
}

But, this is exactly the same situation that I have in my simulator; so 
the problem must reside elsewhere. By comparing the base code generated 
by Glade I found:

*my simulator*
  winProgress = gtk_window_new (GTK_WINDOW_TOPLEVEL);
  gtk_widget_set_name (winProgress, "winProgress");
  gtk_widget_set_size_request (winProgress, 350, 77);
  gtk_window_set_title (GTK_WINDOW (winProgress), _("Simulating..."));
  gtk_window_set_modal (GTK_WINDOW (winProgress), TRUE);
  gtk_window_set_resizable (GTK_WINDOW (winProgress), FALSE);
  gtk_window_set_skip_taskbar_hint (GTK_WINDOW (winProgress), TRUE);

*test program*
  winDlg = gtk_window_new (GTK_WINDOW_TOPLEVEL);
  gtk_window_set_title (GTK_WINDOW (winDlg), "Dialog window");
  gtk_window_set_position (GTK_WINDOW (winDlg),
                           GTK_WIN_POS_CENTER_ON_PARENT);

After some attempt, I found that it is call to 
*gtk_window_set_skip_taskbar_hint* that make the dialog lost its 
"modality" (BTW, after calling gtk_window_set_modal the window losses 
its taskbar button).


John Cupitt ha scritto lo scorso 08/10/2004 17.18:

> Could you make a small test program that shows the problem?
>
> On Fri, 08 Oct 2004 16:09:49 +0200, Carlo <carlo-ag libero it> wrote:
>
> > Apparently, it is exactly what I do, except for the fact that my modal
> > contains a progressbar and has been generated by Glade2; but, while your
> > code works as expected, my dialog *is not modal* (by focusing the parent
> > window, the dialog goes under it).