9d2cdb163f
... as soon as we updated the 'sender' example. Changes are purely cosmetic though - 'explicit', nullptrs and local variables instead of redundant data-members (QPushButton). Task-number: QTBUG-60628 Change-Id: I572219da9d2a0ced07d94efb6f52f00b5a9c546d Reviewed-by: Mårten Nordheim <marten.nordheim@qt.io> Reviewed-by: Edward Welbourne <edward.welbourne@qt.io>
100 lines
3.7 KiB
C++
100 lines
3.7 KiB
C++
/****************************************************************************
|
|
**
|
|
** Copyright (C) 2017 The Qt Company Ltd.
|
|
** Contact: https://www.qt.io/licensing/
|
|
**
|
|
** This file is part of the examples of the Qt Toolkit.
|
|
**
|
|
** $QT_BEGIN_LICENSE:BSD$
|
|
** Commercial License Usage
|
|
** Licensees holding valid commercial Qt licenses may use this file in
|
|
** accordance with the commercial license agreement provided with the
|
|
** Software or, alternatively, in accordance with the terms contained in
|
|
** a written agreement between you and The Qt Company. For licensing terms
|
|
** and conditions see https://www.qt.io/terms-conditions. For further
|
|
** information use the contact form at https://www.qt.io/contact-us.
|
|
**
|
|
** BSD License Usage
|
|
** Alternatively, you may use this file under the terms of the BSD license
|
|
** as follows:
|
|
**
|
|
** "Redistribution and use in source and binary forms, with or without
|
|
** modification, are permitted provided that the following conditions are
|
|
** met:
|
|
** * Redistributions of source code must retain the above copyright
|
|
** notice, this list of conditions and the following disclaimer.
|
|
** * Redistributions in binary form must reproduce the above copyright
|
|
** notice, this list of conditions and the following disclaimer in
|
|
** the documentation and/or other materials provided with the
|
|
** distribution.
|
|
** * Neither the name of The Qt Company Ltd nor the names of its
|
|
** contributors may be used to endorse or promote products derived
|
|
** from this software without specific prior written permission.
|
|
**
|
|
**
|
|
** THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
|
|
** "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
|
|
** LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
|
|
** A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
|
|
** OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
|
|
** SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
|
|
** LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
|
|
** DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
|
|
** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
|
|
** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
|
|
** OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE."
|
|
**
|
|
** $QT_END_LICENSE$
|
|
**
|
|
****************************************************************************/
|
|
|
|
#include <QtWidgets>
|
|
#include <QtNetwork>
|
|
|
|
#include "receiver.h"
|
|
|
|
Receiver::Receiver(QWidget *parent)
|
|
: QWidget(parent)
|
|
{
|
|
statusLabel = new QLabel(tr("Listening for broadcasted messages"));
|
|
statusLabel->setWordWrap(true);
|
|
|
|
auto quitButton = new QPushButton(tr("&Quit"));
|
|
|
|
//! [0]
|
|
udpSocket = new QUdpSocket(this);
|
|
udpSocket->bind(45454, QUdpSocket::ShareAddress);
|
|
//! [0]
|
|
|
|
//! [1]
|
|
connect(udpSocket, SIGNAL(readyRead()),
|
|
this, SLOT(processPendingDatagrams()));
|
|
//! [1]
|
|
connect(quitButton, SIGNAL(clicked()), this, SLOT(close()));
|
|
|
|
auto buttonLayout = new QHBoxLayout;
|
|
buttonLayout->addStretch(1);
|
|
buttonLayout->addWidget(quitButton);
|
|
buttonLayout->addStretch(1);
|
|
|
|
auto mainLayout = new QVBoxLayout;
|
|
mainLayout->addWidget(statusLabel);
|
|
mainLayout->addLayout(buttonLayout);
|
|
setLayout(mainLayout);
|
|
|
|
setWindowTitle(tr("Broadcast Receiver"));
|
|
}
|
|
|
|
void Receiver::processPendingDatagrams()
|
|
{
|
|
QByteArray datagram;
|
|
//! [2]
|
|
while (udpSocket->hasPendingDatagrams()) {
|
|
datagram.resize(int(udpSocket->pendingDatagramSize()));
|
|
udpSocket->readDatagram(datagram.data(), datagram.size());
|
|
statusLabel->setText(tr("Received datagram: \"%1\"")
|
|
.arg(datagram.constData()));
|
|
}
|
|
//! [2]
|
|
}
|