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# listnames.cpp Example File

dbus/listnames/listnames.cpp

     /****************************************************************************
     **
     ** Copyright (C) 2015 The Qt Company Ltd.
     ** Contact: http://www.qt.io/licensing/
     **
     ** 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
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     **     notice, this list of conditions and the following disclaimer in
     **     the documentation and/or other materials provided with the
     **     distribution.
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     **     contributors may be used to endorse or promote products derived
     **     from this software without specific prior written permission.
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     ** LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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     #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;
     }