Qt Reference Documentation

listnames.cpp Example File

dbus/listnames/listnames.cpp
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 ** This file is part of the examples of the Qt Toolkit.
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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;
 }
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