|  | Home · All Classes · Main Classes · Grouped Classes · Modules · Functions |

# sender.cpp Example File
network/broadcastsender/sender.cpp

     /****************************************************************************
     **
     ** Copyright (C) 2004-2008 Trolltech ASA. All rights reserved.
     **
     ** This file is part of the example classes of the Qt Toolkit.
     **
     ** This file may be used under the terms of the GNU General Public
     ** License versions 2.0 or 3.0 as published by the Free Software
     ** Foundation and appearing in the files LICENSE.GPL2 and LICENSE.GPL3
     ** included in the packaging of this file.  Alternatively you may (at
     ** your option) use any later version of the GNU General Public
     ** License if such license has been publicly approved by Trolltech ASA
     ** (or its successors, if any) and the KDE Free Qt Foundation. In
     ** addition, as a special exception, Trolltech gives you certain
     ** additional rights. These rights are described in the Trolltech GPL
     ** Exception version 1.2, which can be found at
     ** http://www.trolltech.com/products/qt/gplexception/ and in the file
     ** GPL_EXCEPTION.txt in this package.
     **
     ** Please review the following information to ensure GNU General
     ** Public Licensing requirements will be met:
     ** http://trolltech.com/products/qt/licenses/licensing/opensource/. If
     ** you are unsure which license is appropriate for your use, please
     ** review the following information:
     ** http://trolltech.com/products/qt/licenses/licensing/licensingoverview
     ** or contact the sales department at sales@trolltech.com.
     **
     ** In addition, as a special exception, Trolltech, as the sole
     ** copyright holder for Qt Designer, grants users of the Qt/Eclipse
     ** Integration plug-in the right for the Qt/Eclipse Integration to
     ** link to functionality provided by Qt Designer and its related
     ** libraries.
     **
     ** This file is provided "AS IS" with NO WARRANTY OF ANY KIND,
     ** INCLUDING THE WARRANTIES OF DESIGN, MERCHANTABILITY AND FITNESS FOR
     ** A PARTICULAR PURPOSE. Trolltech reserves all rights not expressly
     ** granted herein.
     **
     ** 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 <QtGui>
     #include <QtNetwork>

     #include "sender.h"

     Sender::Sender(QWidget *parent)
         : QDialog(parent)
     {
         statusLabel = new QLabel(tr("Ready to broadcast datagrams on port 45454"));

         startButton = new QPushButton(tr("&Start"));
         quitButton = new QPushButton(tr("&Quit"));

         buttonBox = new QDialogButtonBox;
         buttonBox->addButton(startButton, QDialogButtonBox::ActionRole);
         buttonBox->addButton(quitButton, QDialogButtonBox::RejectRole);

         timer = new QTimer(this);
         udpSocket = new QUdpSocket(this);
         messageNo = 1;

         connect(startButton, SIGNAL(clicked()), this, SLOT(startBroadcasting()));
         connect(quitButton, SIGNAL(clicked()), this, SLOT(close()));
         connect(timer, SIGNAL(timeout()), this, SLOT(broadcastDatagram()));

         QVBoxLayout *mainLayout = new QVBoxLayout;
         mainLayout->addWidget(statusLabel);
         mainLayout->addWidget(buttonBox);
         setLayout(mainLayout);

         setWindowTitle(tr("Broadcast Sender"));
     }

     void Sender::startBroadcasting()
     {
         startButton->setEnabled(false);
         timer->start(1000);
     }

     void Sender::broadcastDatagram()
     {
         statusLabel->setText(tr("Now broadcasting datagram %1").arg(messageNo));
         QByteArray datagram = "Broadcast message " + QByteArray::number(messageNo);
         udpSocket->writeDatagram(datagram.data(), datagram.size(),
                                  QHostAddress::Broadcast, 45454);
         ++messageNo;
     }