Hello,

At the moment i am developing an apllication for displaying database contents by QTableView and QAbstractTableModel.
For this purpose i wrote a test application to check the performance. I set only 200 rows and 37 columns but the whole applications slows a bit down. Additionaly the selection of cells is relatively slow.
Is there any way to increase the performance of this test application?

Test.h
Qt Code: 
  1. class Model: public QAbstractTableModel
  2. {
  3.    Q_OBJECT
  4.    public:
  5.       Model();
  6.       virtual int rowCount(   const QModelIndex &parent) const;
  7.       virtual int columnCount(const QModelIndex &parent) const;
  8.       virtual QVariant data(  const QModelIndex &index, int role) const;
  9.       QVariant headerData(
  10.          int section, 
  11.          Qt::Orientation orientation, 
  12.          int role) const;
  13. };
  14.  
  15. class Window: public QMainWindow 
  16. {
  17.    Q_OBJECT
  18.    public:
  19.       Window(QWidget *aParent = 0);
  20.    private:
  21.       QTableView m_view;
  22.       Model m_model;
  23. };
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Test.cpp
Qt Code: 
  1. Model::Model()
  2. {
  3. }
  4.  
  5. // 
  6. //-----------------------------------------------------------------------------
  7. int Model::rowCount(const QModelIndex &parent) const
  8. {
  9.    return 200;
  10. }
  11.  
  12. // 
  13. //-----------------------------------------------------------------------------
  14. int Model::columnCount(const QModelIndex &parent) const
  15. {
  16.    return 37;
  17. }
  18.  
  19. // 
  20. //-----------------------------------------------------------------------------
  21. QVariant Model::data(const QModelIndex &index, int role) const
  22. {
  23.    if (role == Qt::DisplayRole)
  24.    {
  25.       return QVariant(QString("%1, %2 esfgsdgsdgsdgsdg")
  26.          .arg(index.row())
  27.          .arg(index.column()));
  28.    }
  29.    return QVariant();
  30. }
  31.  
  32. // 
  33. //-----------------------------------------------------------------------------
  34. QVariant Model::headerData(
  35.    int section, 
  36.    Qt::Orientation orientation, 
  37.    int role) const
  38. {
  39.    if (section < 37)
  40.       return QVariant(QString("Spalte: %1").arg(section));
  41.    else
  42.       return QVariant();
  43. }
  44.  
  45. // 
  46. //-----------------------------------------------------------------------------
  47. Window::Window(QWidget *aParent):
  48.    QMainWindow(aParent),
  49.    m_view(this)
  50. {
  51.    setCentralWidget(&m_view);
  52.    m_view.setModel(&m_model);
  53.    m_view.verticalHeader()->setDefaultSectionSize(17);
  54. }
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I hope someone can help me.
Thanks in advance.

regards Marco B.