MainWindow.cpp

#include "MainWindow.h"MainWindow::MainWindow(){	// Initialise members	preferences_window = NULL;		// Load the data for this window and it's widgets.    refXml = Gnome::Glade::Xml::create("simpleapp.glade", "main_window");        // The window    refXml->get_widget("main_window", window);	window->signal_delete_event().connect(sigc::mem_fun(*this, &MainWindow::on_delete_event));    // Widgets    refXml->connect_clicked("preferences_button", sigc::mem_fun(*this, &MainWindow::on_preferences_open));        // Show everything.    window->show_all_children(true);}MainWindow::~MainWindow(){	delete window; // Frees all the children for the window, too.}bool MainWindow::on_delete_event(GdkEventAny *e){	if (preferences_window != NULL)		return true;		return false;}void MainWindow::on_preferences_open(){	if (preferences_window == NULL)		preferences_window = new PreferencesWindow;		preferences_window->window->signal_delete_event().connect(sigc::mem_fun(*this, &MainWindow::on_preferences_close));	preferences_window->window->signal_hide().connect(sigc::mem_fun(*this, &MainWindow::on_preferences_hide));}void MainWindow::on_preferences_hide(){	std::cout << "MainWindow::on_preferences_hide() called" << std::endl;		delete preferences_window;	preferences_window = NULL;		std::cout << "MainWindow::on_preferences_hide() finished" << std::endl;}bool MainWindow::on_preferences_close(GdkEventAny *e){	on_preferences_hide();	return false;}