On Mon, Jan 10, 2005 at 05:29:07AM -0500, anne isac wrote:
> I'm new to Gtk.
> I'm trying to create a screen dynamically.
> The screen is to have frame with labels and comboboxes the number of witch is only known at run time.
First of all, you should use a GtkTable. Widgets placed at
fixed positions are going to be broken by user settings,
namely theme and font size. GtkFixed is a very special and
rarely needed widget. I'm sure there's a section about
widget packing in the tutorial.
> My GtkFrame has a GtkFixed widget on to witch I place the GtkLabel and GtkComboBox.
> when I execute the program some of the labels and comboboxes do not get displayed as I get an error message as
>
> (try:15287): GLib-GObject-WARNING **: invalid cast from `GtkLabel' to `GtkFixed'
> (try:15287): Gtk-CRITICAL **: file gtkfixed.c: line 188 (gtk_fixed_put): assertion `GTK_IS_FIXED (fixed)' failed
>
> But this happens for the some particular positions in the list by which I populate the frame.
> Could some one please tell me as to why only at some particular point I get this error when I'm able to populate the remaining frame by the same code.
>
> I'd be really grateful if anyone could help me out.
>
> here is my code:
>
> for (c = 0, option = group->options; c < group->num_options;
> c++, option++)
> {
> dynamicLabel[I] = gtk_label_new (option->keyword);
> gtk_widget_show (dynamicLabel[I]);
> gtk_fixed_put (GTK_FIXED (dynamicFixed[d]), dynamicLabel[I], 10, k);
> gtk_widget_set_size_request (dynamicLabel[I], 120, 26);
> gtk_label_set_line_wrap (GTK_LABEL (dynamicLabel[I]), TRUE);
> dynamicCombo[I] = gtk_combo_box_new_text ();
> gtk_widget_show (dynamicCombo[I]);
> gtk_fixed_put (GTK_FIXED (dynamicFixed[d]), dynamicCombo[I], 150,
> k);
> gtk_widget_set_size_request (dynamicCombo[I], 250, 26);
> gtk_container_set_border_width (GTK_CONTAINER (dynamicCombo[I]), 1);
> for (e = 0; e < option->num_choices; e++)
> {
> option->choices[e].text);
> gtk_combo_box_append_text (GTK_COMBO_BOX (dynamicCombo[I]),
> option->choices[e].text);
> }
>
> gtk_combo_box_set_active (GTK_COMBO_BOX (dynamicCombo[I]), 0);
> g_signal_connect (dynamicCombo[I], "changed",
> G_CALLBACK (on_combo_changed),
> GINT_TO_POINTER (I));
> I++;
> k = k + 40;
> }
This code snippet never assings anything to dynamicFixed[]
(it only uses them), so it's hard to say why they have
a wrong type.
Yeti
--
Dynamic IP address is not a crime.
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