Hello guys I have a problem ..
When I want to enter new parameters in the Qscroll area, put out from the new parameters and do not see the QscrollBar. I wish it were all dynamic, that when I post a new parameter, inserts it into the area by changing the bar ... how do I?? help!!

file .h
Qt Code: 
  1. class ParamPage : public QWidget
  2.    {
  3.   	 Q_OBJECT
  4.    public:
  5.        ParamPage(QWidget *parent = 0);
  6.        QString text;
  7.        QString prev;
  8.        QLabel *label;
  9.        QLineEdit *lineEdit;
  10.        QPushButton *parButton;
  11.        QPushButton *modButton;
  12.        QLabel *pathLabel;
  13.        QLineEdit *fileNameEdit;
  14.         int num;
  15.        QLineEdit *edit[10];
  16.        int  lineNumber;
  17.        QStringList listFileData;
  18.        QScrollArea *scrollArea;
  19.        QRect desktopGeometry;
  20.        void writeToFile();
  21.        void reactToSIP();
  22.  
  23.    private slots:
  24.    void paramClicked();
  25.    void modifClicked();
  26.    void desktopResized(int screen);
  27.  
  28.  
  29.    };
  30.  
  31.  
  32.  
  33. #endif
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file .cpp
Qt Code: 
  1. ParamPage::ParamPage(QWidget *parent)
  2.      : QWidget(parent)
  3.  {
  4.  
  5. 	 desktopGeometry = QApplication::desktop()->availableGeometry(0);
  6. 	 scrollArea = new QScrollArea(this);
  7.  
  8.      QGroupBox *configGroup = new QGroupBox(scrollArea);
  9.      QGridLayout *gridLayout = new QGridLayout(configGroup);
  10.           configGroup->setLayout(gridLayout);
  11.  
  12.      parButton = new QPushButton(configGroup);
  13.      parButton->setText("new_par");
  14.      modButton = new QPushButton(configGroup);
  15.      modButton->setText("add par");
  16.      pathLabel = new QLabel(configGroup);
  17.      pathLabel->setText("File");
  18.      fileNameEdit = new QLineEdit(configGroup);
  19.    //  QLabel *serverLabel = new QLabel(tr("Server:"));
  20.  
  21.      //QComboBox *serverCombo = new QComboBox;
  22.      //serverCombo->addItem(tr("Trolltech (Australia)"));
  23.      //serverCombo->addItem(tr("Trolltech (Germany)"));
  24.      //serverCombo->addItem(tr("Trolltech (Norway)"));
  25.      //serverCombo->addItem(tr("Trolltech (People's Republic of China)"));
  26.      //serverCombo->addItem(tr("Trolltech (USA)"));
  27.      gridLayout->addWidget(  parButton);
  28.          gridLayout->addWidget(modButton);
  29.          gridLayout->addWidget(pathLabel);
  30.          gridLayout->addWidget(fileNameEdit);
  31.  
  32.          scrollArea->setWidget(configGroup);
  33.               QHBoxLayout* layout = new QHBoxLayout();
  34.               layout->addWidget(scrollArea);
  35.               setLayout(layout);
  36.               scrollArea->setHorizontalScrollBarPolicy(Qt::ScrollBarAlwaysOff);
  37.  
  38.  
  39.  
  40.      //serverLayout->addWidget(serverCombo);
  41.  
  42.      connect(parButton, SIGNAL (clicked()), this, SLOT( paramClicked()));
  43.      connect(modButton, SIGNAL (clicked()), this, SLOT( modifClicked()));
  44.  
  45.      connect(QApplication::desktop(), SIGNAL(workAreaResized(int)),
  46.               this, SLOT(desktopResized(int)));
  47.  
  48.  
  49.  }
  50.  
  51. void ParamPage::desktopResized(int screen)
  52.  {
  53.      if (screen != 0)
  54.          return;
  55.      reactToSIP();
  56.  }
  57.  
  58.  void ParamPage::reactToSIP()
  59.  {
  60.      QRect availableGeometry = QApplication::desktop()->availableGeometry(0);
  61.  
  62.      if (desktopGeometry != availableGeometry) {
  63.          if (windowState() | Qt::WindowMaximized)
  64.              setWindowState(windowState() & ~Qt::WindowMaximized);
  65.  
  66.  
  67.  
  68.          setGeometry(availableGeometry);
  69.      }
  70.  
  71.      desktopGeometry = availableGeometry;
  72.  }
  73.  
  74. void ParamPage::paramClicked(){
  75. 	bool ok;
  76. 	 text = QInputDialog::getText(scrollArea, tr("Nuovo parametro"),
  77. 				                                          tr("Nome parametro:"), QLineEdit::Normal,QDir::home().dirName(),
  78. 				                                          &ok);
  79.  
  80. 	 num = QInputDialog::getInteger(scrollArea, tr("Numero colonne"),tr("Percentage:"), 25, 0, 100, 1, &ok);
  81.  
  82. 	 // QVBoxLayout *mainLayout = new QVBoxLayout;
  83.  
  84. 			    	// QLabel* l = new QLabel("new label", this);
  85. 			    	 //	mainLayout->addWidget(l,1,0);
  86. if(ok){
  87.  
  88. 			    	    label = new QLabel(scrollArea);
  89. 			    	 			    //label->adjustSize();
  90. 			    	 			    //label->setIndent(15);
  91. 			    	 			    //this->layout()->set
  92.  
  93. 			    	 			   this->layout()->addWidget(label);
  94. 			    	 			   label->setText(text);
  95. 			    	 			    for(int i;i<num;i++){
  96. 			    	 			   edit[i]=new QLineEdit(scrollArea);
  97. 			    	 			    	this->layout()->addWidget(edit[i]);
  98. 			    	 			    }
  99.  
  100.  
  101. 			    	 			  // mainLayout->addWidget(label,1,0);
  102.  
  103. 			    	 			  // mainLayout->addWidget(label,3,0);
  104. 			    	 			//  setLayout(mainLayout);
  105.  
  106. 			    	 			   //lineEdit = new QLineEdit(this);
  107.  
  108. 			    	 			  	    //lineEdit->set
  109. 			    	 			  	 //   this->layout()->addWidget(lineEdit);
  110.  
  111.  
  112.  
  113.  
  114. 			    	 			    	//layout()->addWidget(lineEdit);
  115. }
  116.  
  117.  
  118. }
  119.  
  120.  
  121. void ParamPage::modifClicked(){
  122. QString fileName =
  123.         QFileDialog::getOpenFileName(this, tr("Open CFG File"),
  124.                                      QDir::currentPath(),
  125.                                      tr("CFG Files ( *.cfg)"));
  126. QFileInfo fileInfo(fileName);
  127.  
  128.  
  129. fileNameEdit->setText(fileInfo.absoluteFilePath());
  130.    //pathValueLabel = new QLabel(fileInfo.fileName());
  131.    // pathValueLabel->setFrameStyle(QFrame::Panel | QFrame::Sunken);
  132.  
  133. QFile file(fileName);
  134.  if (!file.open(QIODevice::ReadOnly | QIODevice::Text))
  135.      return ;
  136.  QTextStream out(&file);
  137.  prev="";
  138.  lineNumber=0;
  139.  while (!file.atEnd()) {
  140. 	QString line = file.readLine();
  141. 	listFileData.append(line);
  142.      if(line.startsWith("Fine File")){
  143.     	 //line=prev;
  144.  
  146.     			     list = line.split(QRegExp("\\s+"));
  147.     				 QString str;
  148.     				 str.append("Exec	");
  149.     				 str.append("/CODE/ScriptFiles/BatchModeRunning/");
  150.     				 str.append("\n");
  151.     				 str.append("Fine File");
  152.     				 str.append(list[1]);
  153.     				 listFileData.replace(lineNumber,str);
  154.  
  155.  
  156.  
  157.      }
  158.    //  else{
  159.     	// prev= line;
  160.     // }
  161.      lineNumber ++;
  162.  }
  163.  writeToFile();
  164. }
  165.  
  166. void ParamPage::writeToFile(){
  167.  
  168. QFile file("Config_new.cfg");
  169. 	if (!file.open(QIODevice::WriteOnly | QIODevice::Text))
  170. 	 return;
  171.  
  172. 	QTextStream out(&file);
  173. 	for(int i = 0;	i<listFileData.size(); i++)
  174. 		out << listFileData.at(i) << "\n";
  175. }
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thankss!!!!