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

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

        /****************************************************************************
        **
        ** Copyright (C) 2004-2006 Trolltech AS. All rights reserved.
        **
        ** This file is part of the documentation of the Qt Toolkit.
        **
        ** This file may be used under the terms of the GNU General Public
        ** License version 2.0 as published by the Free Software Foundation
        ** and appearing in the file LICENSE.GPL included in the packaging of
        ** this file.  Please review the following information to ensure GNU
        ** General Public Licensing requirements will be met:
        ** http://www.trolltech.com/products/qt/opensource.html
        **
        ** If you are unsure which license is appropriate for your use, please
        ** review the following information:
        ** http://www.trolltech.com/products/qt/licensing.html or contact the
        ** sales department at sales@trolltech.com.
        **
        ** 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"));
            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()));

            QHBoxLayout *buttonLayout = new QHBoxLayout;
            buttonLayout->addStretch(1);
            buttonLayout->addWidget(startButton);
            buttonLayout->addWidget(quitButton);

            QVBoxLayout *mainLayout = new QVBoxLayout;
            mainLayout->addWidget(statusLabel);
            mainLayout->addLayout(buttonLayout);
            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;
        }