//! [0]
        class MainApplicationAdaptor: public QDBusAbstractAdaptor
        {
            Q_OBJECT
            Q_CLASSINFO("D-Bus Interface", "com.example.DBus.MainApplication")
            Q_CLASSINFO("D-Bus Interface", "org.kde.DBus.MainApplication")
            Q_PROPERTY(QString caption READ caption WRITE setCaption)
            Q_PROPERTY(QString organizationName READ organizationName)
            Q_PROPERTY(QString organizationDomain READ organizationDomain)

        private:
            QApplication *app;

        public:
            MainApplicationAdaptor(QApplication *application)
                : QDBusAbstractAdaptor(application), app(application)
            {
                connect(application, SIGNAL(aboutToQuit()), SIGNAL(aboutToQuit());
                connect(application, SIGNAL(focusChanged(QWidget*, QWidget*)),
                        SLOT(focusChangedSlot(QWidget*, QWidget*)));
            }

            QString caption()
            {
                if (app->hasMainWindow())
                    return app->mainWindow()->caption();
                return QString(""); // must not return a null QString
            }

            void setCaption(const QString &newCaption)
            {
                if (app->hasMainWindow())
                    app->mainWindow()->setCaption(newCaption);
            }

            QString organizationName()
            {
                return app->organizationName();
            }

            QString organizationDomain()
            {
                return app->organizationDomain();
            }

        public slots:
            Q_NOREPLY void quit()
            { app->quit(); }

            void reparseConfiguration()
            { app->reparseConfiguration(); }

            QString mainWindowObject()
            {
                if (app->hasMainWindow())
                    return QString("/%1/mainwindow").arg(app->applicationName());
                return QString();
            }

            void setSessionManagement(bool enable)
            {
                if (enable)
                   app->enableSessionManagement();
                else
                   app->disableSessionManagement();
            }

        private slots:
            void focusChangedSlot(QWidget *, QWidget *now)
            {
                if (now == app->mainWindow())
                    emit mainWindowHasFocus();
            }

        signals:
            void aboutToQuit();
            void mainWindowHasFocus();
        };
//! [0]


//! [1]
        interface com.example.DBus.MainApplication
        {
            property readwrite STRING caption
            property read STRING organizationName
            property read STRING organizationDomain

            method quit() annotation("org.freedesktop.DBus.Method.NoReply", "true")
            method reparseConfiguration()
            method mainWindowObject(out STRING)
            method disableSessionManagement(in BOOLEAN enable)

            signal aboutToQuit()
            signal mainWindowHasFocus()
        }

        interface org.kde.DBus.MainApplication
        {
            ....
        }
//! [1]


//! [2]
        int main(int argc, char **argv)
        {
            // create the QApplication object
            QApplication app(argc, argv);

            // create the MainApplication adaptor:
            new MainApplicationAdaptor(app);

            // connect to D-Bus and register as an object:
            QDBus::sessionBus().registerObject("/MainApplication", app);

            // add main window, etc.
            [...]

            app.exec();
        }
//! [2]


//! [3]
        class MainApplicationAdaptor: public QDBusAbstractAdaptor
        {
            Q_OBJECT
            Q_CLASSINFO("D-Bus Interface", "com.example.DBus.MainApplication")
            Q_CLASSINFO("D-Bus Interface", "org.kde.DBus.MainApplication")
//! [3]


//! [4]
            Q_PROPERTY(QString caption READ caption WRITE setCaption)
            Q_PROPERTY(QString organizationName READ organizationName)
            Q_PROPERTY(QString organizationDomain READ organizationDomain)
//! [4]


//! [5]
            QString caption()
            {
                if (app->hasMainWindow())
                    return app->mainWindow()->caption();
                return QString();
            }

            void setCaption(const QString &newCaption)
            {
                if (app->hasMainWindow())
                    app->mainWindow()->setCaption(newCaption);
            }

            QString organizationName()
            {
                return app->organizationName();
            }

            QString organizationDomain()
            {
                return app->organizationDomain();
            }
//! [5]


//! [6]
            MyInterfaceAdaptor(QApplication *application)
                : QDBusAbstractAdaptor(application), app(application)
            {
                connect(application, SIGNAL(aboutToQuit()), SIGNAL(aboutToQuit());
                connect(application, SIGNAL(focusChanged(QWidget*, QWidget*)),
                        SLOT(focusChangedSlot(QWidget*, QWidget*)));
            }
//! [6]


//! [7]
        public slots:
            Q_NOREPLY void quit()
            { app->quit(); }

            void reparseConfiguration()
            { app->reparseConfiguration(); }

            QString mainWindowObject()
            {
                if (app->hasMainWindow())
                    return QString("/%1/mainwindow").arg(app->applicationName());
                return QString();
            }

            void setSessionManagement(bool enable)
            {
                if (enable)
                   app->enableSessionManagement();
                else
                   app->disableSessionManagement();
            }
//! [7]


//! [8]
        signals:
            void aboutToQuit();
            void mainWindowHasFocus();
//! [8]


//! [9]
        private slots:
            void focusChangedSlot(QWidget *, QWidget *now)
            {
                if (now == app->mainWindow())
                    emit mainWindowHasFocus();
            }
//! [9]


//! [10]
    struct RequestData
    {
        QString request;
        QString processedData;
        QDBusMessage reply;
    };

    QString processRequest(const QString &request, const QDBusMessage &message)
    {
        RequestData *data = new RequestData;
        data->request = request;
        message.setDelayedReply(true);
        data->reply = message.createReply();
        QDBusConnection::sessionBus().send(data->reply);

        appendRequest(data);
        return QString();
    }
//! [10]


//! [11]
    void sendReply(RequestData *data)
    {
        // data->processedData has been initialized with the request's reply
        QDBusMessage &reply = &data->reply;

        // send the reply over D-Bus:
        reply << data->processedData;
        QDBusConnection::sessionBus().send(reply);

        // dispose of the transaction data
        delete data;
    }
//! [11]


//! [12]
        Q_NOREPLY void myMethod();
//! [12]


