inserting QCheckBox into the Header

[ru_core]

Hello everybody
I have the task to insert the QCheckBox item into the vertical header.
I looked through the demos (itemview) where picture (the star) is inserted into the vertical header by reimplementing

method QVariant QAbstractItemModel::headerData ( int section, Qt::Orientation orientation, int role = Qt:: DisplayRole ) const [virtual]

QVariant Model::headerData(int section, Qt::Orientation orientation, int role) const
{
    static QIcon services(QPixmap(":/images/services.png"));
    if (role == Qt::DisplayRole)
        return QString::number(section);
    if (role == Qt::DecorationRole)
        return qVariantFromValue(services);
    return QStandardItemModel::headerData(section, orientation, role);
}

QVariant Model::headerData(int section, Qt::Orientation orientation, int role) const
{
    static QIcon services(QPixmap(":/images/services.png"));
    if (role == Qt::DisplayRole)
        return QString::number(section);
    if (role == Qt::DecorationRole)
        return qVariantFromValue(services);
    return QStandardItemModel::headerData(section, orientation, role);
}

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Then I try to reload this method for my own model (CustomModel)

QVariant CustomModel::headerData(int section, Qt::Orientation orientation, int role) const
{
	if (role == Qt::DisplayRole)
		return QString::number(section);
	QObject *object = new QCheckBox;
	if (role == Qt::UserRole)
		return qVariantFromValue(object);
	return QStandardItemModel::headerData(section, orientation, role);
}

QVariant CustomModel::headerData(int section, Qt::Orientation orientation, int role) const
{
	if (role == Qt::DisplayRole)
		return QString::number(section);
	QObject *object = new QCheckBox;
	if (role == Qt::UserRole)
		return qVariantFromValue(object);
	return QStandardItemModel::headerData(section, orientation, role);
}

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but there is no effect.
Help me please.