- Qt 5.3
- Qt Bluetooth
- Bluetooth Chat Example
- chatclient.cpp Example File
- Qt 5.3.2 Reference Documentation

# chatclient.cpp Example File

btchat/chatclient.cpp

    /****************************************************************************
    **
    ** Copyright (C) 2013 Digia Plc and/or its subsidiary(-ies).
    ** Contact: http://www.qt-project.org/legal
    **
    ** This file is part of the QtBluetooth module of the Qt Toolkit.
    **
    ** $QT_BEGIN_LICENSE:BSD$
    ** 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 Digia Plc and its Subsidiary(-ies) nor the names
    **     of its contributors may be used to endorse or promote products derived
    **     from this software without specific prior written permission.
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    ** "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
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    ****************************************************************************/

    #include "chatclient.h"

    #include <qbluetoothsocket.h>

    ChatClient::ChatClient(QObject *parent)
    :   QObject(parent), socket(0)
    {
    }

    ChatClient::~ChatClient()
    {
        stopClient();
    }

    void ChatClient::startClient(const QBluetoothServiceInfo &remoteService)
    {
        if (socket)
            return;

        // Connect to service
        socket = new QBluetoothSocket(QBluetoothServiceInfo::RfcommProtocol);
        qDebug() << "Create socket";
        socket->connectToService(remoteService);
        qDebug() << "ConnectToService done";

        connect(socket, SIGNAL(readyRead()), this, SLOT(readSocket()));
        connect(socket, SIGNAL(connected()), this, SLOT(connected()));
        connect(socket, SIGNAL(disconnected()), this, SIGNAL(disconnected()));
    }

    void ChatClient::stopClient()
    {
        delete socket;
        socket = 0;
    }

    void ChatClient::readSocket()
    {
        if (!socket)
            return;

        while (socket->canReadLine()) {
            QByteArray line = socket->readLine();
            emit messageReceived(socket->peerName(),
                                 QString::fromUtf8(line.constData(), line.length()));
        }
    }

    void ChatClient::sendMessage(const QString &message)
    {
        QByteArray text = message.toUtf8() + '\n';
        socket->write(text);
    }

    void ChatClient::connected()
    {
        emit connected(socket->peerName());
    }