Gtk tree view filter

["IGNASIDP terra es" <IGNASIDP terra es>]

Hola,
estoy intentando hacer mi primer programa en Gtk. Es muy sencillo: la idea es presentar una lista en la ventana izquierda y un tree-view en la derecha, de tal manera que al seleccionar un elemento en la lista se muestre en el tree-view las filas que cumplen la condición establecida.

Mi problema es cómo conectar las dos ventanas. Por más que lo intento me da errores del tipo: Gtk-CRITICAL **; gtk_tree_model_filter_refilter: assertion 'GTK_IS_MODEL_FILTER(filter)' failed

¿Me podéis ayudar? Os dejo parte del código.
Muchas gracias
	
	Mount

static gboolean
Filter_func (GtkTreeModel *model,
			GtkTreeIter *iter,
			gpointer data)
{
	gchar *grp;
	gboolean ret = FALSE;

	gtk_tree_model_get (model, iter, COL_GROUP, &grp, -1);
	if (strcmp (grp, selname) == 0)
	{
		ret = TRUE;
	}
	g_free (grp);
	return ret;
}

static void
group_selected (GtkTreeSelection *selection,
				gpointer data)
{
	GtkTreeModel *treeview;
	GtkTreeIter iter;
	GtkTreeModel *model;
	gchar *name;

	GtkWidget	*widget = lookup_widget (GTK_WIDGET (window), "treeview");

	treeview = gtk_tree_view_get_model (GTK_TREE_VIEW (widget));

	if (gtk_tree_selection_get_selected (selection, &model, &iter))
	{
		gtk_tree_model_get (model, &iter, COL_NAME, &name, -1);
		selname = name;
		g_print ("You selected: %s\tselname: %s\n", name, selname);
		g_free (name);
	}
	gtk_tree_model_filter_refilter (GTK_TREE_MODEL_FILTER (treeview));
}

static void
add_col_groups (GtkTreeView  *treeview, 
				GtkTreeModel *groups_model)
{
	GtkCellRenderer *renderer;
	GtkTreeSelection *select;

	renderer = gtk_cell_renderer_text_new ();
	g_object_set (renderer,
				"editable", FALSE,
				NULL);

	g_object_set_data (G_OBJECT (renderer), "column", GINT_TO_POINTER (COL_NAME));

	gtk_tree_view_insert_column_with_attributes (GTK_TREE_VIEW (treeview),
 												-1, "Name", renderer,
												"text", COL_NAME,
												NULL);

	select = gtk_tree_view_get_selection (GTK_TREE_VIEW (treeview));
	gtk_tree_selection_set_mode (select, GTK_SELECTION_SINGLE);
	g_signal_connect (G_OBJECT (select), "changed",
					G_CALLBACK (group_selected),
					NULL);
}

GtkWidget *
do_editable_cells (GtkWidget *do_widget)
{
	GtkWidget		*sw1;
	GtkWidget		*sw2;
	GtkWidget		*treeview;
	GtkWidget		*groupsview;
	GtkTreeModel	*items_model;
	GtkTreeModel	*groups_model;
	GtkTreeModel	*treeviewfilter;

	sw1 = gtk_scrolled_window_new (NULL, NULL);
	sw2 = gtk_scrolled_window_new (NULL, NULL);
	
	/* crea los modelos */
	items_model = create_items_model ();
	groups_model = create_groups_model ();

	/* crea el tree view */
	treeviewfilter = gtk_tree_model_filter_new (items_model, NULL);
	treeview = gtk_tree_view_new_with_model (treeviewfilter);
	gtk_tree_view_set_rules_hint (GTK_TREE_VIEW (treeview), TRUE);
	gtk_tree_selection_set_mode (gtk_tree_view_get_selection (GTK_TREE_VIEW (treeview)),
								GTK_SELECTION_SINGLE);

	add_columns (GTK_TREE_VIEW (treeview), items_model);

	/* crea el groups view */
	groupsview = gtk_tree_view_new_with_model (groups_model);
	gtk_tree_view_set_rules_hint (GTK_TREE_VIEW (groupsview), TRUE);
	gtk_tree_selection_set_mode (gtk_tree_view_get_selection (GTK_TREE_VIEW (groupsview)),
								GTK_SELECTION_SINGLE);

	add_col_groups (GTK_TREE_VIEW (groupsview), groups_model);

	gtk_tree_model_filter_set_visible_func (GTK_TREE_MODEL_FILTER (treeviewfilter),
											Filter_func, NULL, NULL);

	gtk_container_add (GTK_CONTAINER (sw1), groupsview);
	gtk_container_add (GTK_CONTAINER (sw2), treeview);
	.....
	return window;
}

int
main (int argc, char **argv)
{
	gtk_init (&argc, &argv);
	do_editable_cells (window);
	gtk_main ();
	return 0;
}


Ahora también puedes acceder a tu correo Terra desde el móvil.
Infórmate pinchando aquí.