Qt Reference Documentation

pong.cpp Example File

dbus/pingpong/pong.cpp
 /****************************************************************************
 **
 ** Copyright (C) 2013 Digia Plc and/or its subsidiary(-ies).
 ** Contact: http://www.qt-project.org/legal
 **
 ** This file is part of the examples of the Qt Toolkit.
 **
 ** $QT_BEGIN_LICENSE:BSD$
 ** You may use this file under the terms of the BSD license as follows:
 **
 ** "Redistribution and use in source and binary forms, with or without
 ** modification, are permitted provided that the following conditions are
 ** met:
 **   * Redistributions of source code must retain the above copyright
 **     notice, this list of conditions and the following disclaimer.
 **   * Redistributions in binary form must reproduce the above copyright
 **     notice, this list of conditions and the following disclaimer in
 **     the documentation and/or other materials provided with the
 **     distribution.
 **   * Neither the name of Digia Plc and its Subsidiary(-ies) nor the names
 **     of its contributors may be used to endorse or promote products derived
 **     from this software without specific prior written permission.
 **
 **
 ** THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
 ** "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
 ** LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
 ** A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
 ** OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
 ** SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
 ** LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
 ** DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
 ** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 ** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 ** OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE."
 **
 ** $QT_END_LICENSE$
 **
 ****************************************************************************/

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

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

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

 QString Pong::ping(const QString &arg)
 {
     QMetaObject::invokeMethod(QCoreApplication::instance(), "quit");
     return QString("ping(\"%1\") got called").arg(arg);
 }

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

     if (!QDBusConnection::sessionBus().isConnected()) {
         fprintf(stderr, "Cannot connect to the D-Bus session bus.\n"
                 "To start it, run:\n"
                 "\teval `dbus-launch --auto-syntax`\n");
         return 1;
     }

     if (!QDBusConnection::sessionBus().registerService(SERVICE_NAME)) {
         fprintf(stderr, "%s\n",
                 qPrintable(QDBusConnection::sessionBus().lastError().message()));
         exit(1);
     }

     Pong pong;
     QDBusConnection::sessionBus().registerObject("/", &pong, QDBusConnection::ExportAllSlots);

     app.exec();
     return 0;
 }