Qt with Cascades UI Examples Documentation

Receiver.hpp Example File

network/multicastreceiver/src/Receiver.hpp
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    #ifndef RECEIVER_HPP
    #define RECEIVER_HPP

    #include <QtCore/QObject>
    #include <QtNetwork/QHostAddress>

    class QUdpSocket;

    /**
     * The Receiver class handles the processing of the incoming UDP multicast datagrams.
     * It uses a QUdpSocket to retrieve the multicast datagrams and makes the content of
     * the multicast datagram available to the UI via the 'status' property.
     */
    class Receiver : public QObject
    {
        Q_OBJECT

        // The property that makes the content of a received multicast datagram available to the UI
        Q_PROPERTY(QString status READ status NOTIFY statusChanged)

    public:
        Receiver(QObject *parent = 0);

    Q_SIGNALS:
        // The change notification signal of the status property
        void statusChanged();

    private Q_SLOTS:
        // This method is called whenever a new multicast datagram arrived on the socket
        void processPendingDatagrams();

    private:
        // The accessor method of the status property
        QString status() const;

        // The UDP socket object
        QUdpSocket *m_udpSocket;

        // The multicast address to listen on
        QHostAddress m_groupAddress;

        // The content of the received multicast datagram
        QString m_status;
    };

    #endif