FUNCTION:

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

USECASE:

	tabs_general.set_callback_value_change(dialog_callback
			<tpreferences, &on_tab_select<"gen_tab_bar"> >);

DEFINITION OF set_callback_value_change AND dialog_callback

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

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);
}

COMPILER ERRORS

||=== Build: Release in liblua (compiler: GNU GCC Compiler) ===|
||=== Build: Release in wesnoth (compiler: GNU GCC Compiler) ===|
C:\Users\\Documents\wesnoth-git\src\gui\dialogs\preferences_dialog.cpp||In member function 'void gui2::tpreferences::initialize_tabs(gui2::twindow&)':|
C:\Users\\Documents\wesnoth-git\src\gui\dialogs\preferences_dialog.cpp|502|error: no matching function for call to 'gui2::tlistbox::set_callback_value_change(<unresolved overloaded function type>)'|
..\..\src\gui\widgets\listbox.hpp|219|note: candidate: void gui2::tlistbox::set_callback_value_change(const boost::function<void(gui2::twidget&)>&)|
..\..\src\gui\widgets\listbox.hpp|219|note:   no known conversion for argument 1 from '<unresolved overloaded function type>' to 'const boost::function<void(gui2::twidget&)>&'|
||=== Build finished: 1 error(s), 0 warning(s) (0 minute(s), 4 second(s)) ===|