receiver.cpp Example File
network/broadcastreceiver/receiver.cpp
/****************************************************************************
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** Copyright (C) 2004-2005 Trolltech AS. All rights reserved.
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** This file is part of the documentation of the Qt Toolkit.
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** accordance with the Qt Preview License Agreement provided with the
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** WARRANTY OF DESIGN, MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
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#include <QtGui>
#include <QtNetwork>
#include "receiver.h"
Receiver::Receiver(QWidget *parent)
: QDialog(parent)
{
statusLabel = new QLabel(tr("Listening for broadcasted messages"));
quitButton = new QPushButton(tr("&Quit"));
udpSocket = new QUdpSocket(this);
udpSocket->bind(45454);
connect(udpSocket, SIGNAL(readyRead()),
this, SLOT(processPendingDatagrams()));
connect(quitButton, SIGNAL(clicked()), this, SLOT(close()));
QHBoxLayout *buttonLayout = new QHBoxLayout;
buttonLayout->addStretch(1);
buttonLayout->addWidget(quitButton);
QVBoxLayout *mainLayout = new QVBoxLayout;
mainLayout->addWidget(statusLabel);
mainLayout->addLayout(buttonLayout);
setLayout(mainLayout);
setWindowTitle(tr("Broadcast Receiver"));
}
void Receiver::processPendingDatagrams()
{
while (udpSocket->hasPendingDatagrams()) {
QByteArray datagram;
datagram.resize(udpSocket->pendingDatagramSize());
udpSocket->readDatagram(datagram.data(), datagram.size());
statusLabel->setText(tr("Received datagram: \"%1\"")
.arg(datagram.data()));
}
}