Qt 4.8: main.cpp Example File (network/network-chat/main.cpp)

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# main.cpp Example File

network/network-chat/main.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
     **     notice, this list of conditions and the following disclaimer.
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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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     ** "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
     ** LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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     #include <QApplication>

     #include "chatdialog.h"

     #include <QtCore/QSettings>
     #include <QtNetwork/QNetworkConfigurationManager>
     #include <QtNetwork/QNetworkSession>

     int main(int argc, char *argv[])
     {
         QApplication app(argc, argv);

         QNetworkConfigurationManager manager;
         if (manager.capabilities() & QNetworkConfigurationManager::NetworkSessionRequired) {
             // Get saved network configuration
             QSettings settings(QSettings::UserScope, QLatin1String("Trolltech"));
             settings.beginGroup(QLatin1String("QtNetwork"));
             const QString id = settings.value(QLatin1String("DefaultNetworkConfiguration")).toString();
             settings.endGroup();

             // If the saved network configuration is not currently discovered use the system default
             QNetworkConfiguration config = manager.configurationFromIdentifier(id);
             if ((config.state() & QNetworkConfiguration::Discovered) !=
                 QNetworkConfiguration::Discovered) {
                 config = manager.defaultConfiguration();
             }

             QNetworkSession *networkSession = new QNetworkSession(config, &app);
             networkSession->open();
             networkSession->waitForOpened();

             if (networkSession->isOpen()) {
                 // Save the used configuration
                 QNetworkConfiguration config = networkSession->configuration();
                 QString id;
                 if (config.type() == QNetworkConfiguration::UserChoice) {
                     id = networkSession->sessionProperty(
                             QLatin1String("UserChoiceConfiguration")).toString();
                 } else {
                     id = config.identifier();
                 }

                 QSettings settings(QSettings::UserScope, QLatin1String("Trolltech"));
                 settings.beginGroup(QLatin1String("QtNetwork"));
                 settings.setValue(QLatin1String("DefaultNetworkConfiguration"), id);
                 settings.endGroup();
             }
         }

         ChatDialog dialog;
     #ifdef Q_OS_SYMBIAN
         // Make application better looking and more usable on small screen
         dialog.showMaximized();
     #else
         dialog.show();
     #endif
         return app.exec();
     }