dialog.h Example File
network/loopback/dialog.h

 /****************************************************************************
 **
 ** Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies).
 ** All rights reserved.
 ** Contact: Nokia Corporation (qt-info@nokia.com)
 **
 ** This file is part of the examples of the Qt Toolkit.
 **
 ** $QT_BEGIN_LICENSE:LGPL$
 ** No Commercial Usage
 ** This file contains pre-release code and may not be distributed.
 ** You may use this file in accordance with the terms and conditions
 ** contained in the Technology Preview License Agreement accompanying
 ** this package.
 **
 ** GNU Lesser General Public License Usage
 ** Alternatively, this file may be used under the terms of the GNU Lesser
 ** General Public License version 2.1 as published by the Free Software
 ** Foundation and appearing in the file LICENSE.LGPL included in the
 ** packaging of this file.  Please review the following information to
 ** ensure the GNU Lesser General Public License version 2.1 requirements
 ** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
 **
 ** In addition, as a special exception, Nokia gives you certain additional
 ** rights.  These rights are described in the Nokia Qt LGPL Exception
 ** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
 **
 ** If you have questions regarding the use of this file, please contact
 ** Nokia at qt-info@nokia.com.
 **
 **
 **
 **
 **
 **
 **
 **
 ** $QT_END_LICENSE$
 **
 ****************************************************************************/

 #ifndef DIALOG_H
 #define DIALOG_H

 #include <QDialog>
 #include <QTcpServer>
 #include <QTcpSocket>

 class QDialogButtonBox;
 class QLabel;
 class QProgressBar;
 class QPushButton;
 class QTcpServer;
 class QTcpSocket;

 class Dialog : public QDialog
 {
     Q_OBJECT

 public:
     Dialog(QWidget *parent = 0);

 public slots:
     void start();
     void acceptConnection();
     void startTransfer();
     void updateServerProgress();
     void updateClientProgress(qint64 numBytes);
     void displayError(QAbstractSocket::SocketError socketError);

 private:
     QProgressBar *clientProgressBar;
     QProgressBar *serverProgressBar;
     QLabel *clientStatusLabel;
     QLabel *serverStatusLabel;
     QPushButton *startButton;
     QPushButton *quitButton;
     QDialogButtonBox *buttonBox;

     QTcpServer tcpServer;
     QTcpSocket tcpClient;
     QTcpSocket *tcpServerConnection;
     int bytesToWrite;
     int bytesWritten;
     int bytesReceived;
 };

 #endif