Home · All Namespaces · All Classes · Main Classes · Grouped Classes · Modules · Functions

complexpong.cpp Example File

 ** Copyright (C) 2008 Nokia Corporation and/or its subsidiary(-ies).
 ** Contact: Qt Software Information (qt-info@nokia.com)
 ** This file is part of the example classes of the Qt Toolkit.
 ** Commercial Usage
 ** Licensees holding valid Qt Commercial licenses may use this file in
 ** accordance with the Qt Commercial License Agreement provided with the
 ** Software or, alternatively, in accordance with the terms contained in
 ** a written agreement between you and Nokia.
 ** GNU General Public License Usage
 ** Alternatively, this file may be used under the terms of the GNU
 ** General Public License versions 2.0 or 3.0 as published by the Free
 ** Software Foundation and appearing in the file LICENSE.GPL included in
 ** the packaging of this file.  Please review the following information
 ** to ensure GNU General Public Licensing requirements will be met:
 ** http://www.fsf.org/licensing/licenses/info/GPLv2.html and
 ** http://www.gnu.org/copyleft/gpl.html.  In addition, as a special
 ** exception, Nokia gives you certain additional rights. These rights
 ** are described in the Nokia Qt GPL Exception version 1.3, included in
 ** the file GPL_EXCEPTION.txt in this package.
 ** Qt for Windows(R) Licensees
 ** As a special exception, Nokia, as the sole copyright holder for Qt
 ** Designer, grants users of the Qt/Eclipse Integration plug-in the
 ** right for the Qt/Eclipse Integration to link to functionality
 ** provided by Qt Designer and its related libraries.
 ** If you are unsure which license is appropriate for your use, please
 ** contact the sales department at qt-sales@nokia.com.

 #include <stdio.h>
 #include <stdlib.h>

 #include <QtCore/QCoreApplication>
 #include <QtCore/QTimer>
 #include <QtDBus/QtDBus>

 #include "ping-common.h"
 #include "complexpong.h"

 // the property
 QString Pong::value() const
     return m_value;

 void Pong::setValue(const QString &newValue)
     m_value = newValue;

 void Pong::quit()
     QTimer::singleShot(0, QCoreApplication::instance(), SLOT(quit()));

 QDBusVariant Pong::query(const QString &query)
     QString q = query.toLower();
     if (q == "hello")
         return QDBusVariant("World");
     if (q == "ping")
         return QDBusVariant("Pong");
     if (q == "the answer to life, the universe and everything")
         return QDBusVariant(42);
     if (q.indexOf("unladen swallow") != -1) {
         if (q.indexOf("european") != -1)
             return QDBusVariant(11.0);
         return QDBusVariant(QByteArray("african or european?"));

     return QDBusVariant("Sorry, I don't know the answer");

 int main(int argc, char **argv)
     QCoreApplication app(argc, argv);

     QObject obj;
     Pong *pong = new Pong(&obj);
     pong->connect(&app, SIGNAL(aboutToQuit()), SIGNAL(aboutToQuit()));
     pong->setProperty("value", "initial value");
     QDBusConnection::sessionBus().registerObject("/", &obj);

     if (!QDBusConnection::sessionBus().registerService(SERVICE_NAME)) {
         fprintf(stderr, "%s\n",

     return 0;

Copyright © 2008 Nokia Trademarks
Qt 4.4.3