Hi All,

I have made a QTableView with 200 rows and 4 columns.. but the column header are invisible and here is my code snippet.

toolform.cpp
Qt Code: 
  1. ToolForm::ToolForm(QDialog *parent, Qt::WindowFlags f)
  2.           : QDialog( parent, f)
  3. {
  4.         setupUi(this);
  5.         setupModel();
  6.         setupViews();
  7.         init();
  8. }
  9.  
  10. ToolForm::~ToolForm()
  11. {
  12. }
  13.  
  14. void ToolForm::init()
  15. {
  16.  
  17. }
  18. void ToolForm::setupModel()
  19. {
  20.      model = new QStandardItemModel(200, 4, this);
  21.      model->setHeaderData(0, Qt::Horizontal, tr("NUMBER"));
  22.      model->setHeaderData(1, Qt::Horizontal, tr("DIAMETER"));
  23.      model->setHeaderData(2, Qt::Horizontal, tr("LENGTH"));
  24.      model->setHeaderData(3, Qt::Horizontal, tr("UNITS"));
  25. }
  26.  
  27. void ToolForm::setupViews()
  28. {
  29.       QTableView *tooltableView = new QTableView;
  30.       tooltableView->setModel(model);
  31.       QItemSelectionModel *selectionModel = new QItemSelectionModel(model);
  32.       tooltableView->setSelectionModel(selectionModel);
  33. }
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toolform.h
Qt Code: 
  1. #ifndef TOOLFORM_H
  2. #define TOOLFORM_H
  3.  
  4. #include <QVariant>
  5. #include <QDialog>
  6.  
  7. #include "ui_toolform.h"
  8.  
  11.  
  12.  
  13. class ToolForm : public QDialog, private Ui::ToolForm
  14. {
  15.     Q_OBJECT
  16.  
  17. public:
  18.     ToolForm( QDialog* parent = 0, Qt::WindowFlags f = Qt::FramelessWindowHint);
  19.     ~ToolForm();
  20.  
  21. private:
  22.  
  23.      void setupModel();
  24.      void setupViews();
  25.      void init();
  26.  
  28.      QItemSelectionModel *selectionModel;
  29. };
  30.  
  31. #endif // TOOLFORM_H
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How to resolve this issue.