Таблица с виджетами

class ComboBoxDelegate : public QItemDelegate
{
  Q_OBJECT
public:
 ComboBoxDelegate(QObject *parent = 0);
 
 QWidget * createEditor(QWidget *parent, const QStyleOptionViewItem &option, const QModelIndex &index) const; 
 
 void setModelData(QWidget *editor, QAbstractItemModel *model, const QModelIndex &index) const;
 
 void updateEditorGeometry(QWidget *editor, const QStyleOptionViewItem &option, const QModelIndex &index);
 
};

#include "ComboBoxDelegate.h"
#include <QtGui>
 
ComboBoxDelegate::ComboBoxDelegate(QObject *parent) : QItemDelegate(parent) 
{} 
 
QWidget * ComboBoxDelegate::createEditor(QWidget *parent, const QStyleOptionViewItem &option, const QModelIndex &index) const
{
    QStringList strList;
    strList << (QString::fromLocal8Bit("0 (Без оценки)")) << (QString::fromLocal8Bit("0 (-----------)"))  << (QString::fromLocal8Bit("0: не зачет"));
    QComboBox* editor = new QComboBox;
    editor->addItems(strList);
    editor->setEditable(false);
 
    return editor;
}
 
void ComboBoxDelegate::setModelData(QWidget *editor, QAbstractItemModel *model, const QModelIndex &index)const
{
 QComboBox *box = static_cast<QComboBox*>(editor);
 QString tempStr = box->currentText();
 int val = box->currentIndex();
 model->setData(index, tempStr, Qt::DisplayRole);
}
 
void updateEditorGeometry(QWidget *editor, const QStyleOptionViewItem &option, const QModelIndex &index)
{
 editor->setGeometry(option.rect);
}

#include "ComboBoxDelegate.h"
#include <QtGui/QApplication>
 
int main(int argc, char *argv[])
{
    QApplication app(argc, argv);
    QStandardItemModel model(4, 2);
    QTableView tableView;
    tableView.setModel(&model);
    ComboBoxDelegate del;
   
    tableView.setItemDelegate(&del);
    tableView.horizontalHeader()->setStretchLastSection(true);
    
    //tableView.setItemDelegateForColumn(0, &del);
 
        
    tableView.show();
    return app.exec();
}

QComboBox* editor = new QComboBox(this);

ComboBoxDelegate del(&tableView);

QComboBox* editor = new QComboBox(parent);

int main(int argc, char *argv[])
{
    QApplication app(argc, argv);
    QStandardItemModel model(4, 2);
    QTableView tableView;
    tableView.setModel(&model);
        ComboBoxDelegate del(&tableView);
   
  
    tableView.horizontalHeader()->setStretchLastSection(true);
        tableView.setItemDelegateForColumn(0, &del);
 
 
    
    tableView.show();
    return app.exec();
}