[gtkmm] Gtk::CellRenderer: Text below a pixmap

[Samuel <spam debain org>]

Hello All,

I am trying to create a treeview with one column, having labeled icons
in every cell.

The problem is that the CellRendererText is shown /right/ from the icon.
But how can I add the renderer below the icon?
I have appended what I have done so far.

Thanks!
-Samuel


------------------------------------------
  // The treeview columns.
  class ModelColumns : public Gtk::TreeModel::ColumnRecord {
  public:
    Gtk::TreeModelColumn<Glib::RefPtr<Gdk::Pixbuf> > pixbuf;
    ModelColumns() {
      add(pixbuf);
    }
  };
  
  Glib::RefPtr<Gtk::ListStore> store;
  Gtk::CellRendererText        renderer_text;
  ModelColumns                 columns;
  
  // Create a liststore and attach it to a view.
  store = Gtk::ListStore::create(columns);
  treeview->set_model(store);
  Gtk::TreeModel::Row row = *store->append();
  
  // Add a row with one icon.
  Glib::RefPtr<Gdk::Pixbuf> pixbuf;
  pixbuf = Gdk::Pixbuf::create_from_file("gnome-util.png");
  categories->append_column("Category", columns.pixbuf);
  row[columns.pixbuf] = pixbuf;
  
  // Add a text renderer below the icon.
  categories->get_column(0)->pack_end(renderer_text, TRUE);
------------------------------------------