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    41 

    42 #include <QtGui>

    43 #include <QtNetwork>

    44 

    45 #include "receiver.h"

    46 

    47 Receiver::Receiver(QWidget *parent)

    48     : QDialog(parent)

    49 {

    50     statusLabel = new QLabel(tr("Listening for broadcasted messages"));

    51     quitButton = new QPushButton(tr("&Quit"));

    52 

    53 //! [0]

    54     udpSocket = new QUdpSocket(this);

    55     udpSocket->bind(45454);

    56 //! [0]

    57 

    58 //! [1]

    59     connect(udpSocket, SIGNAL(readyRead()),

    60             this, SLOT(processPendingDatagrams()));

    61 //! [1]

    62     connect(quitButton, SIGNAL(clicked()), this, SLOT(close()));

    63 

    64     QHBoxLayout *buttonLayout = new QHBoxLayout;

    65     buttonLayout->addStretch(1);

    66     buttonLayout->addWidget(quitButton);

    67     buttonLayout->addStretch(1);

    68 

    69     QVBoxLayout *mainLayout = new QVBoxLayout;

    70     mainLayout->addWidget(statusLabel);

    71     mainLayout->addLayout(buttonLayout);

    72     setLayout(mainLayout);

    73 

    74     setWindowTitle(tr("Broadcast Receiver"));

    75 }

    76 

    77 void Receiver::processPendingDatagrams()

    78 {

    79 //! [2]

    80     while (udpSocket->hasPendingDatagrams()) {

    81         QByteArray datagram;

    82         datagram.resize(udpSocket->pendingDatagramSize());

    83         udpSocket->readDatagram(datagram.data(), datagram.size());

    84         statusLabel->setText(tr("Received datagram: \"%1\"")

    85                              .arg(datagram.data()));

    86     }

    87 //! [2]

    88 }