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listnames.cpp Example File
dbus/listnames/listnames.cpp

 /****************************************************************************
 **
 ** Copyright (C) 2007-2008 Nokia Corporation and/or its subsidiary(-ies). All rights reserved.
 **
 ** This file is part of the documentation of the Qt Toolkit.
 **
 ** Licensees holding a valid Qt License Agreement may use this file in
 ** accordance with the rights, responsibilities and obligations
 ** contained therein.  Please consult your licensing agreement or
 ** contact [email protected] if any conditions of this licensing
 ** agreement are not clear to you.
 **
 ** Further information about Qt licensing is available at:
 ** http://trolltech.com/products/appdev/licensing.
 **
 ** This file is provided AS IS with NO WARRANTY OF ANY KIND, INCLUDING THE
 ** WARRANTY OF DESIGN, MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
 **
 ****************************************************************************/

 #include <QtCore/QCoreApplication>
 #include <QtCore/QDebug>
 #include <QtCore/QStringList>
 #include <QtDBus/QtDBus>

 void method1()
 {
     qDebug() << "Method 1:";

     QDBusReply<QStringList> reply = QDBusConnection::sessionBus().interface()->registeredServiceNames();
     if (!reply.isValid()) {
         qDebug() << "Error:" << reply.error().message();
         exit(1);
     }
     foreach (QString name, reply.value())
         qDebug() << name;
 }

 void method2()
 {
     qDebug() << "Method 2:";

     QDBusConnection bus = QDBusConnection::sessionBus();
     QDBusInterface dbus_iface("org.freedesktop.DBus", "/org/freedesktop/DBus",
                               "org.freedesktop.DBus", bus);
     qDebug() << dbus_iface.call("ListNames").arguments().at(0);
 }

 void method3()
 {
     qDebug() << "Method 3:";
     qDebug() << QDBusConnection::sessionBus().interface()->registeredServiceNames().value();
 }

 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;
     }

     method1();
     method2();
     method3();

     return 0;
 }