Hi,

I have:
Qt Code: 
  2.     model->setTable( "table" );
  3.     model->select();
  4.     model->setHeaderData( 0, Qt::Horizontal, QObject::tr("Annual Pay") );
  5.     model->setHeaderData( 1, Qt::Horizontal, QObject::tr("First Name") );
  6.     model->setHeaderData( 2, Qt::Horizontal, QObject::tr("Last Name") );
  7.     model->removeColumn( 0 );
  8.     TableResult->setModel( model );
  9.     BarDelegate delegate;
  10.     TableResult->setItemDelegateForColumn(1, &delegate);
  11.     TableResult->show();
To copy to clipboard, switch view to plain text mode 

and in Delegate class i've:

Qt Code: 
  1. class BarDelegate : public QAbstractItemDelegate
  2. {
  3. public:
  4.   BarDelegate( QObject *parent = 0 );
  5.  
  6.   void paint( QPainter *painter, const QStyleOptionViewItem &option, const QModelIndex &index ) const;
  7.   QSize sizeHint( const QStyleOptionViewItem &option, const QModelIndex &index ) const;
  8.  
  9.   QWidget *createEditor( QWidget *parent, const QStyleOptionViewItem &option, const QModelIndex &index ) const;
  10.   void setEditorData( QWidget *editor, const QModelIndex &index ) const;
  11.   void setModelData( QWidget *editor, QAbstractItemModel *model, const QModelIndex &index ) const;
  12.   void updateEditorGeometry( QWidget *editor, const QStyleOptionViewItem &option, const QModelIndex &index ) const;
  13. };
To copy to clipboard, switch view to plain text mode 

In createEditor:
Qt Code: 
  1. QWidget *BarDelegate::createEditor( QWidget *parent, const QStyleOptionViewItem &option, const QModelIndex &index ) const
  2. {
  3.     QMessageBox::information( 0, "window1", "test" );
  4.   QLineEdit *lineEdit = new QLineEdit( parent );
  5.   lineEdit->setAutoFillBackground( true );
  6.   lineEdit->installEventFilter( const_cast<BarDelegate*>(this) );
  7.   return lineEdit;
  8. }
To copy to clipboard, switch view to plain text mode 

When I press on a cell TableResult, there is no QMessageBox :/

Similar with:
Qt Code: 
  1. void BarDelegate::setEditorData( QWidget *editor, const QModelIndex &index ) const
  2. {
  3.     QMessageBox::information( 0, "window1", "test2" );
  4.   QString value = index.model()->data( index, Qt::DisplayRole ).toString();
  5.   static_cast<QLineEdit*>( editor )->setText( value );
  6. }
To copy to clipboard, switch view to plain text mode 
and :/
Qt Code: 
  1. void BarDelegate::setModelData( QWidget *editor, QAbstractItemModel *model, const QModelIndex &index ) const
  2. {
  3.     QMessageBox::information( 0, "window1", "test3" );
  4.   model->setData( index, static_cast<QLineEdit*>( editor )->text() );
  5. }
To copy to clipboard, switch view to plain text mode