qt 6.5.1 original

examples/network/broadcastsender/CMakeLists.txt

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+# Copyright (C) 2022 The Qt Company Ltd.
+# SPDX-License-Identifier: BSD-3-Clause
+
+cmake_minimum_required(VERSION 3.16)
+project(broadcastsender LANGUAGES CXX)
+
+if(NOT DEFINED INSTALL_EXAMPLESDIR)
+    set(INSTALL_EXAMPLESDIR "examples")
+endif()
+
+set(INSTALL_EXAMPLEDIR "${INSTALL_EXAMPLESDIR}/network/broadcastsender")
+
+find_package(Qt6 REQUIRED COMPONENTS Core Gui Network Widgets)
+
+qt_standard_project_setup()
+
+qt_add_executable(broadcastsender
+    main.cpp
+    sender.cpp sender.h
+)
+
+set_target_properties(broadcastsender PROPERTIES
+    WIN32_EXECUTABLE TRUE
+    MACOSX_BUNDLE TRUE
+)
+
+target_link_libraries(broadcastsender PRIVATE
+    Qt6::Core
+    Qt6::Gui
+    Qt6::Network
+    Qt6::Widgets
+)
+
+install(TARGETS broadcastsender
+    RUNTIME DESTINATION "${INSTALL_EXAMPLEDIR}"
+    BUNDLE DESTINATION "${INSTALL_EXAMPLEDIR}"
+    LIBRARY DESTINATION "${INSTALL_EXAMPLEDIR}"
+)

examples/network/broadcastsender/broadcastsender.pro

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+QT += network widgets
+requires(qtConfig(udpsocket))
+
+HEADERS       = sender.h
+SOURCES       = sender.cpp \
+                main.cpp
+
+# install
+target.path = $$[QT_INSTALL_EXAMPLES]/network/broadcastsender
+INSTALLS += target

examples/network/broadcastsender/main.cpp

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+// Copyright (C) 2016 The Qt Company Ltd.
+// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR BSD-3-Clause
+
+#include <QApplication>
+
+#include "sender.h"
+
+int main(int argc, char *argv[])
+{
+    QApplication app(argc, argv);
+    Sender sender;
+    sender.show();
+    return app.exec();
+}

examples/network/broadcastsender/sender.cpp

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+// Copyright (C) 2017 The Qt Company Ltd.
+// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR BSD-3-Clause
+
+#include <QtWidgets>
+#include <QtNetwork>
+#include <QtCore>
+
+#include "sender.h"
+
+Sender::Sender(QWidget *parent)
+    : QWidget(parent)
+{
+    statusLabel = new QLabel(tr("Ready to broadcast datagrams on port 45454"));
+    statusLabel->setWordWrap(true);
+
+    startButton = new QPushButton(tr("&Start"));
+    auto quitButton = new QPushButton(tr("&Quit"));
+
+    auto buttonBox = new QDialogButtonBox;
+    buttonBox->addButton(startButton, QDialogButtonBox::ActionRole);
+    buttonBox->addButton(quitButton, QDialogButtonBox::RejectRole);
+
+//! [0]
+    udpSocket = new QUdpSocket(this);
+//! [0]
+
+    connect(startButton, &QPushButton::clicked, this, &Sender::startBroadcasting);
+    connect(quitButton, &QPushButton::clicked, qApp, &QCoreApplication::quit);
+    connect(&timer, &QTimer::timeout, this, &Sender::broadcastDatagram);
+
+    auto 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));
+//! [1]
+    QByteArray datagram = "Broadcast message " + QByteArray::number(messageNo);
+    udpSocket->writeDatagram(datagram, QHostAddress::Broadcast, 45454);
+//! [1]
+    ++messageNo;
+}

examples/network/broadcastsender/sender.h

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+// Copyright (C) 2017 The Qt Company Ltd.
+// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR BSD-3-Clause
+
+#ifndef SENDER_H
+#define SENDER_H
+
+#include <QWidget>
+#include <QTimer>
+
+QT_BEGIN_NAMESPACE
+class QLabel;
+class QPushButton;
+class QUdpSocket;
+QT_END_NAMESPACE
+
+class Sender : public QWidget
+{
+    Q_OBJECT
+
+public:
+    explicit Sender(QWidget *parent = nullptr);
+
+private slots:
+    void startBroadcasting();
+    void broadcastDatagram();
+
+private:
+    QLabel *statusLabel = nullptr;
+    QPushButton *startButton = nullptr;
+    QUdpSocket *udpSocket = nullptr;
+    QTimer timer;
+    int messageNo = 1;
+};
+
+#endif