complexping.cpp Example Filedbus/complexpingpong/complexping.cpp/**************************************************************************** ** ** Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies). ** All rights reserved. ** Contact: Nokia Corporation (qt-info@nokia.com) ** ** 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 Nokia Corporation 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 <QtCore/QCoreApplication> #include <QtCore/QFile> #include <QtCore/QDebug> #include <QtCore/QProcess> #include <QtDBus/QtDBus> #include "ping-common.h" #include "complexping.h" void Ping::start(const QString &name, const QString &oldValue, const QString &newValue) { Q_UNUSED(oldValue); if (name != SERVICE_NAME || newValue.isEmpty()) return; // open stdin for reading qstdin.open(stdin, QIODevice::ReadOnly); // find our remote iface = new QDBusInterface(SERVICE_NAME, "/", "com.trolltech.QtDBus.ComplexPong.Pong", QDBusConnection::sessionBus(), this); if (!iface->isValid()) { fprintf(stderr, "%s\n", qPrintable(QDBusConnection::sessionBus().lastError().message())); QCoreApplication::instance()->quit(); } connect(iface, SIGNAL(aboutToQuit()), QCoreApplication::instance(), SLOT(quit())); while (true) { printf("Ask your question: "); QString line = QString::fromLocal8Bit(qstdin.readLine()).trimmed(); if (line.isEmpty()) { iface->call("quit"); return; } else if (line == "value") { QVariant reply = iface->property("value"); if (!reply.isNull()) printf("value = %s\n", qPrintable(reply.toString())); } else if (line.startsWith("value=")) { iface->setProperty("value", line.mid(6)); } else { QDBusReply<QDBusVariant> reply = iface->call("query", line); if (reply.isValid()) printf("Reply was: %s\n", qPrintable(reply.value().variant().toString())); } if (iface->lastError().isValid()) fprintf(stderr, "Call failed: %s\n", qPrintable(iface->lastError().message())); } } 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; } Ping ping; ping.connect(QDBusConnection::sessionBus().interface(), SIGNAL(serviceOwnerChanged(QString,QString,QString)), SLOT(start(QString,QString,QString))); QProcess pong; pong.start("./complexpong"); app.exec(); } |