Given

	tabs_display.set_callback_value_change(dialog_callback
			<tpreferences, &tpreferences::on_tab_select>);

Where set_callback_value_change as a definition of


	void
	set_callback_value_change(const boost::function<void(twidget&)>& callback)
	{
		callback_value_changed_ = callback;
	}

If it possible to pass an argument to on_tab_select, which is:

void tpreferences::on_tab_select(twindow& window)
{
	const int selected_row =
		std::max(0, find_widget<tlistbox>(&window, "gen_tab_bar", false).get_selected_row());
	set_visible_tab(window, static_cast<unsigned int>(selected_row));
}


dialog_callback is

/**
 * Template for dialog callbacks. Example usage:
 * widget->set_callback(dialog_callback<my_dialog_class,
 * &my_dialog_class::member_function>);
 */
template <class D, void (D::*fptr)(twindow&)>
void dialog_callback(twidget& caller)
{
	D* dialog = dynamic_cast<D*>(caller.dialog());
	assert(dialog);
	twindow* window = dynamic_cast<twindow*>(caller.get_window());
	assert(window);
	(dialog->*fptr)(*window);
}