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

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

 /****************************************************************************
 **
 ** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
 ** Contact: Qt Software Information ([email protected])
 **
 ** This file is part of the examples of the Qt Toolkit.
 **
 ** $QT_BEGIN_LICENSE:LGPL$
 ** Commercial Usage
 ** Licensees holding valid Qt Commercial licenses may use this file in
 ** accordance with the Qt Commercial License Agreement provided with the
 ** Software or, alternatively, in accordance with the terms contained in
 ** a written agreement between you and Nokia.
 **
 ** GNU Lesser General Public License Usage
 ** Alternatively, this file may be used under the terms of the GNU Lesser
 ** General Public License version 2.1 as published by the Free Software
 ** Foundation and appearing in the file LICENSE.LGPL included in the
 ** packaging of this file.  Please review the following information to
 ** ensure the GNU Lesser General Public License version 2.1 requirements
 ** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
 **
 ** In addition, as a special exception, Nokia gives you certain
 ** additional rights. These rights are described in the Nokia Qt LGPL
 ** Exception version 1.0, included in the file LGPL_EXCEPTION.txt in this
 ** package.
 **
 ** GNU General Public License Usage
 ** Alternatively, this file may be used under the terms of the GNU
 ** General Public License version 3.0 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 the GNU General Public License version 3.0 requirements will be
 ** met: http://www.gnu.org/copyleft/gpl.html.
 **
 ** If you are unsure which license is appropriate for your use, please
 ** contact the sales department at [email protected].
 ** $QT_END_LICENSE$
 **
 ****************************************************************************/

 #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;
 }