void DelayLoadingStore::get_value_vfunc (const iterator& iter, int column, Glib::ValueBase& value) const
{    
    Gtk::TreeModel::Row row = *iter;
    if (column == 1)
    {
        Glib::Value< Glib::RefPtr<Gdk::Pixbuf> > base;
        Gtk::ListStore::get_value_vfunc(iter, column, base);

        Glib::RefPtr<Gdk::Pixbuf> thumb = base.get();

        if (thumb == thumbview->loading_image)