template <typename T, typename W>
void tpreferences::bind_status_label(
          W& parent
        , const std::string& label_id
        , T& window)
{
    tcontrol& label = find_widget<tcontrol>(&window, label_id, false);
    std::string value;

    if (ttoggle_button* type = dynamic_cast<ttoggle_button*>(&parent)) {
        value = bool_to_display_string(parent.get_value_bool());
    } else if (tcombobox* type = dynamic_cast<tcombobox*>(&parent)) {
        value = parent.get_value_string();
    } else {
        value = parent.get_value();
    }

    label.set_label(value);

    parent.set_callback_state_change(boost::bind(
          &tpreferences::status_label_callback<W>
        , this, boost::ref(parent), boost::ref(label)));
}