Hi
I'd like to deliver the updated datastring every 20ms to the server on click. at the moment only one datastring is delivered on click.
I tried to set a loop in void MainWindow::ConnectToServer(), but it does not seem to work.
below is the affected part of the code

I would appreciate your help
thanks in advance



Qt Code: 
  1. MainWindow::MainWindow(QWidget *parent) :
  2.     QMainWindow(parent),
  3.     ui(new Ui::MainWindow)
  4. {
  5.     // Initialize
  6.     p_MainThread      = NULL;
  7.     p_SensorThreadArr = NULL;
  8.     p_TcpSocket = NULL;
  9.  
  10.     // set GUI
  11.     SetGUIDialogBox();
  12.  
  13.     ///p_MainThread = new MainThread();
  14.  
  15.     // ********************
  16.     // Connect to Server
  17.     // ********************
  18.     p_TcpSocket = &tcpSocket;
  19.     //connect(p_TcpSocket, SIGNAL(connected()), this, SLOT(SendRequest()));
  20.     connect(p_TcpSocket,  SIGNAL(connected()), this, SLOT(StartTransfer()));
  21.     // Two Buttons
  22.    [B] connect(searchButton, SIGNAL(clicked()),   this, SLOT(ConnectToServer()));[/B]
  23.     connect(stopButton,   SIGNAL(clicked()),   this, SLOT(StopSearch()));
  24.  
  25.     // **********************
  26.     // Connect GUI Dialog Box
  27.     // **********************
  28.     connect(p_TcpSocket, SIGNAL(disconnected()), this, SLOT(ConnectionClosedByServer()));
  29.     connect(p_TcpSocket, SIGNAL(readyRead()),    this, SLOT(UpdateTableWidget()));
  30.     connect(p_TcpSocket, SIGNAL(error(QAbstractSocket::SocketError)), this, SLOT(Error()));
  31. }
  32.  
  33.  
  34. void MainWindow::ConnectToServer()
  35. {
  36.     p_MainThread->start();
  37.  
  38.    bool isRuning = true;
  39.    while (isRuning == true)
  40.    for (int Ind=0; Ind<5; Ind++)
  41.     {
  42.         qDebug( " connectToServer! "  );
  43.  
  44.         ////p_ClientDataSocket->ConnectToServer(address, port);
  45.         quint16 port = 8888;
  46.         QString address = "127.0.0.1";
  47.         QHostAddress addr(address);
  48.         p_TcpSocket->connectToHost(addr, port);
  49.  
  50.         UpdateConnectionGUI();
  51.         //sleep( 1 ); // Sleep xx ms
  52.     }
  53.  
  54. }
  55.  
  56.  
  57. void MainWindow::StartTransfer()
  58. {
  59.     // *********************************
  60.     // read sensor data from all sensors
  61.     // *********************************
  62.     for (int Ind=0; Ind<m_SensorSum; Ind++)
  63.     {
  64.         QByteArray qBetyArray = p_SensorThreadArr[Ind]->GetSensorData();
  65.  
  66.         // *****************************************
  67.         // build client socket message as QByreArray
  68.         // *****************************************
  69.         // int sensorDataStatus = p_SensorThread->GetSensorDataStatus();
  70.         // no updated sensor data
  71.         // if (sensorDataStatus != 1)
  72.         //    return;
  73.  
  74.         // *******************************************
  75.         // send client socket message to server socket
  76.         // *******************************************
  77.         int len = qBetyArray.length();
  78.         tcpSocket.write(qBetyArray, len);
  79.     }
  80.  
  81.     return;
  82. }
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