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class SimpleDelegate : public QItemDelegate {
public: 
SimpleDelegate(QObject* pobj = 0) : QItemDelegate(pobj) { }; 


QWidget *SimpleDelegate::createEditor(QWidget *parent,const QStyleOptionViewItem &option,const QModelIndex &index) const
{
	 QLineEdit *LineEdit = new QLineEdit(parent);	
	 return LineEdit;
}

void SimpleDelegate::setEditorData(QWidget *editor,const QModelIndex &index) const
 {
    QString Value =index.model()->data(index, Qt::EditRole).toString();
    QLineEdit *LineEdit = qobject_cast<QLineEdit*>(editor);
	LineEdit->setText(Value);		
 }

void SimpleDelegate::setModelData(QWidget *editor, QAbstractItemModel *model,const QModelIndex &index) const
 {
	 
	 QLineEdit *LineEdit = qobject_cast<QLineEdit*>(editor);
	 model->setData(index, LineEdit->text());	
 }

void SimpleDelegate::updateEditorGeometry(QWidget *editor,
     const QStyleOptionViewItem &option, const QModelIndex &/* index */) const
 {
	 editor->setGeometry(option.rect);

 }



void paint(QPainter *pPainter, const QStyleOptionViewItem &option, const QModelIndex &index ) const
{ 
if (option.state & QStyle::State_MouseOver) { 
QRect rect = option.rect; 
QLinearGradient gradient(0, 0, rect.width(), rect.height()); 
gradient.setColorAt(0, Qt::white); 
gradient.setColorAt(0.5, Qt::blue); 
gradient.setColorAt(1, Qt::green); 
pPainter->setBrush(gradient); 
pPainter->drawRect(rect); 
} 
QItemDelegate::paint(pPainter, option, index); 
} 
};