class Window : public QWidget
{
    Q_OBJECT

public:
	Window();
};

class Main : public QWidget {
	Q_OBJECT

public:
	Main(QWidget* parent = 0);
};

Window::Window()
     : QWidget()
{

}

Main::Main(QWidget* parent) : QWidget(parent) {

}

int main(int argc, char *argv[])
{
    QApplication app(argc, argv);
    QApplication ::setOverrideCursor(QCursor(Qt::BlankCursor));
    Window window;
    window.show();
    Main main(&window);
    main.show();

    return app.exec();
}