QComboBox in QTableView

[giker]

I need to show some cells in QTableView as QComboBox, even when the tableView no in edit mode. I create my class for it that inherits QStyledItemDelegateClass and reimplement paint method:

//comboboxdelegate.h
#ifndef COMBOBOXDELEGATE_H
#define COMBOBOXDELEGATE_H
 
#include <QStyledItemDelegate>
#include <QComboBox>
 
class ComboBoxDelegate : public QStyledItemDelegate
{
    Q_OBJECT
 
public:
    ComboBoxDelegate(QObject *parent = 0);
    void paint(QPainter *painter, const QStyleOptionViewItem &option, const QModelIndex &index) const;
 
    void setItems(const QStringList &itemsList);
 
private:
    QStringList m_itemsList;    
};
 
#endif // COMBOBOXDELEGATE_H
 
//comboboxdelegate.cpp
#include "comboboxdelegate.h"
 
#include <QComboBox>
#include <QApplication>
ComboBoxDelegate::ComboBoxDelegate(QObject *parent)
     : QStyledItemDelegate(parent)
 {
 }
 
void ComboBoxDelegate::paint(QPainter *painter, const QStyleOptionViewItem &option, const QModelIndex &index) const
{
    QString value = index.data().toString();    
    QStyleOptionComboBox comboBoxOption;
    comboBoxOption.rect = option.rect;
    comboBoxOption.currentText = value;
    comboBoxOption.state = QStyle::State_Enabled;
    QApplication::style()->drawComplexControl(QStyle::CC_ComboBox, &comboBoxOption, painter);
}

//comboboxdelegate.h
#ifndef COMBOBOXDELEGATE_H
#define COMBOBOXDELEGATE_H

#include <QStyledItemDelegate>
#include <QComboBox>

class ComboBoxDelegate : public QStyledItemDelegate
{
    Q_OBJECT

public:
    ComboBoxDelegate(QObject *parent = 0);
    void paint(QPainter *painter, const QStyleOptionViewItem &option, const QModelIndex &index) const;

    void setItems(const QStringList &itemsList);

private:
    QStringList m_itemsList;    
};

#endif // COMBOBOXDELEGATE_H

//comboboxdelegate.cpp
#include "comboboxdelegate.h"

#include <QComboBox>
#include <QApplication>
ComboBoxDelegate::ComboBoxDelegate(QObject *parent)
     : QStyledItemDelegate(parent)
 {
 }

void ComboBoxDelegate::paint(QPainter *painter, const QStyleOptionViewItem &option, const QModelIndex &index) const
{
    QString value = index.data().toString();    
    QStyleOptionComboBox comboBoxOption;
    comboBoxOption.rect = option.rect;
    comboBoxOption.currentText = value;
    comboBoxOption.state = QStyle::State_Enabled;
    QApplication::style()->drawComplexControl(QStyle::CC_ComboBox, &comboBoxOption, painter);
}

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but comboBox is not showing in the cells, and data too.
How can I draw the combobox in the cell?

[giker]

Answer is

ui->tableView->openPersistentEditor(m_model->index(0, 2));

ui->tableView->openPersistentEditor(m_model->index(0, 2));

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