SIGNAL / SLOT problem

I am a newbie to KDevelop (2 weeks) and I am trying to write a class that accepts data from a socket. I have implemented the following code:

// Header file
#include <qsocket.h>

class QSocketClass : public QSocket
{
  public:
    QSocketClass();
    ~QSocketClass();

    bool connectSocket(QString &host, Q_UINT16 port);
    void sendToServer(QString str);
    void ProcessPendingRead();
    void closeSocket();

  private slots:
    void socketReadyRead();

  private:
    QDataStream dataStream;
};

// C++ file

#include "KioskDemo.h"
#include "Socket.h"

extern KioskDemo *theApp;

QSocketClass::QSocketClass()
{
  printf("In the QSocketClass constructor\n");
}

QSocketClass::~QSocketClass()
{
  printf("In the QSocketClass destructor\n");
  dataStream.unsetDevice();

  theApp->socket->close();
}

bool QSocketClass::connectSocket(QString &host, Q_UINT16 port)
{
  printf("trying to connect to the socket host - " + host + "\n");
 
  if (!theApp->socket)
  {
    theApp->AfxMessageBox("Out of memory");
    return(false);
  }

  connect(theApp->socket, SIGNAL(readyRead()), this, SLOT(socketReadyRead()));
  theApp->socket->connectToHost(host, port);
  dataStream.setDevice(theApp->socket);

  return(true);
}

void QSocketClass::socketReadyRead()
{
  QCString s;
  s.resize(theApp->socket->bytesAvailable());
  theApp->socket->readBlock(s.data(), theApp->socket->bytesAvailable());

  printf(s + "\n");

  return;
}

void QSocketClass::sendToServer(QString str)
{
  // write to the server
  printf("Sending to socket server : " + str + "\n");

  dataStream.writeBytes(str, str.length());

  return;
}

Now this compiles and I can send information to the socket port and the application at the other end picks it up and responds by squiting data back.

However I get the following message when I run the app :

QObject::connect: No such slot QSocket::socketReadyRead()
QObject::connect: (sender name: 'unnamed')
QObject::connect: (reciever name: 'unnamed')

I tried a demo on the web : http://doc.trolltech.com/3.0/mail-example.html that incorporated the readyRead() method and it works but I cannot see the difference between the two app in terms of this readyRead() function. Is this because it inherits from QSocket? how can I force it to look at the QSocketClass for the function and not search in QSocket?

regards in advance,

Gordon.