my code or that Gtk code ..?

my Qt code:
Qt Code: 
  1. timer2 = new QTimer(this);
  2.                 timer2->setSingleShot(TRUE);
  3.  
  4.         timer_FS = new QTimer(this);
  5.         timer_FS->start(300);
  6.  
  7.         container2 = new QX11EmbedContainer(this);
  8.         container2->setPalette(QPalette(Qt::red));
  9.         container2->setAutoFillBackground(true);
  10.  
  11.  
  12.         procc2 = new QProcess();
  13.         procc2->setProcessChannelMode(QProcess::MergedChannels);
  14.         connect(procc2, SIGNAL(readyReadStandardOutput()), this, SLOT(readFromStdout2()));
To copy to clipboard, switch view to plain text mode 
Qt Code: 
  1. QHBoxLayout *layoout4 = new QHBoxLayout();
  2.         layoout4->addWidget(container2);
  3.  
  4.         mainFrame5->setLayout(layoout4);
  5.  
  6.         connect(timer2, SIGNAL(timeout()), this, SLOT(embed2()));
  7.         connect(FPSBackButton, SIGNAL(clicked()), this, SLOT(timeout_bg2()));
  8.         connect(timer_FS, SIGNAL(timeout()), this, SLOT(timeout_FS()));
To copy to clipboard, switch view to plain text mode 

/*setFPScanner =1 will be set when a embed Button is clicked in my Qt app*/
Qt Code: 
  1. void
  2. MainWindow::timeout_FS(){
  3.  
  4.         if(setFPScanner == 1)
  5.                 mainstackedWidget->setCurrentIndex(4);
  6.         else if(embedFPScanner == 1)
  7.         {
  8.         QString program4 = "./gtk_demo2";
  9.         //QString program4 = "./animate";
  10.         QStringList arguments2;
  11.                 if(procc2->state() != QProcess::Running)
  12.                 {
  13.                         procc2->start(program4, arguments2);
  14.                 }
  15.         }
  16.  
  17. }
To copy to clipboard, switch view to plain text mode 
Qt Code: 
  1. void MainWindow::readFromStdout2()
  2. {
  3.         int j = 4;
  4.         bool ok;
  5.         QString out;
  6.         out = procc2->readAllStandardOutput();
  7.         j = out.toInt(&ok, 16);
  8.         printf("j =%d\n",j);
  9.         if(j == 1)
  10.                 printf("device not connected\n");
  11.         else{
  12.                 printf("the device connected\n");
  13.                 timer2->start(2000);
  14.            }
  15.  
  16. }
To copy to clipboard, switch view to plain text mode 

Qt Code: 
  1. void MainWindow::embed2()
  2. {
  3.  
  4.            container2->embedClient(widedit->text().toInt(&ok, 16));
  5. }
To copy to clipboard, switch view to plain text mode 

/*this will be set setFpscanner when a back button in my Qt app is clicked*/
Qt Code: 
  1. void MainWindow::timeout_bg2()
  2. {
  3.         timer_FS->stop();
  4.         setFPScanner = 0;
  5.         mainstackedWidget->setCurrentIndex(1);
  6.         timer_FS->start();
  7. }
To copy to clipboard, switch view to plain text mode 

this is my whole code in that part i written .... if u find any error please help me ...