connect_signal_mouse_left_click(
            find_widget<ttoggle_button>(&window, "show_floating_labels", false),
            boost::bind(
                  &tpreferences::simple_toggle_callback
                , this, "show_floating_labels"
                , preferences::set_show_floating_labels, boost::ref(window)));

template <typename T>
void tpreferences::simple_toggle_callback(const std::string& widget,
        void (*setter) (T), twindow& window)
{
    const T value = find_widget<ttoggle_button>(&window, widget, false).get_value_bool();
    setter(value);
}



ERRORS
C:\Users\Charles\Documents\wesnoth-git\src\gui\dialogs\preferences_dialog.cpp|101|error: no matching function for call to 'bind(<unresolved overloaded function type>, gui2::tpreferences*, const char [21], void (&)(bool), const boost::reference_wrapper<gui2::twindow>)'|