Custom QItemDelegate destroy editor on focus out

rspock

I have subclassed QItemDelegate in order to show a qspinbox and a numpad to insert numbers into the table:

@class HwIoBoardTableItemDelegate: public QItemDelegate
{
Q_OBJECT

public:
HwIoBoardTableItemDelegate(QObject *parent = 0);

QWidget *createEditor(QWidget *parent, const QStyleOptionViewItem &option,
                      const QModelIndex &index) const;

void setEditorData(QWidget *editor, const QModelIndex &index) const;
void setModelData(QWidget *editor, QAbstractItemModel *model,
                  const QModelIndex &index) const;

void updateEditorGeometry(QWidget *editor,
                          const QStyleOptionViewItem &option, const QModelIndex &index) const;

};@

And the implementation:
@QWidget *HwIoBoardTableItemDelegate::createEditor(QWidget parent,
const QStyleOptionViewItem &/ option */,
const QModelIndex & index ) const
{
QWidget * editor = 0;

switch (index.column()) {
case 1:
    editor = new myQSpinBoxDirect(parent);
    break;
case 2:
case 3:
    editor = new myQSpinBoxDirect(parent,0,32);
    break;
case 4:
    editor = new QComboBox(parent);
    for(int i = 0; i<Params::Instance()->hwIoBoardType.count();i++){
        ((QComboBox*)editor)->addItem(Params::Instance()->hwIoBoardType.at(i),Params::Instance()->hwIoBoardType.at(i));
    }
    break;
default:
    break;
}
return editor;

}

void HwIoBoardTableItemDelegate::setEditorData(QWidget *editor,
const QModelIndex &index) const
{
myQSpinBoxDirect *spinBox;
QComboBox *combo;
int valueInt;
QString valueString;

switch (index.column()) {
case 1:
case 2:
case 3:
    valueInt = index.model()->data(index, Qt::EditRole).toInt();
    spinBox = static_cast<myQSpinBoxDirect*>(editor);
    spinBox->setValue(valueInt);
    break;
case 4:
    valueString = index.model()->data(index, Qt::EditRole).toString();
    combo = static_cast<QComboBox*>(editor);
    for(int i = 0; i<Params::Instance()->hwIoBoardType.count();i++){
        if(Params::Instance()->hwIoBoardType.at(i).compare(valueString)==0){
            combo->setCurrentIndex(i);
        }
    }
default:
    break;
}

}

void HwIoBoardTableItemDelegate::setModelData(QWidget *editor, QAbstractItemModel *model,
const QModelIndex &index) const
{
myQSpinBoxDirect *spinBox;
QComboBox *combo;
int valueInt;
QString valueString;

switch (index.column()) {
case 1:
case 2:
case 3:
    spinBox = static_cast<myQSpinBoxDirect*>(editor);
    valueInt = spinBox->value();
    model->setData(index, valueInt, Qt::EditRole);
    break;
case 4:
    combo = static_cast<QComboBox*>(editor);
    valueString = combo->itemData(combo->currentIndex()).toString();
    model->setData(index, valueString, Qt::EditRole);
default:
    break;
}

}

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

And the myQSpinBoxDirect extended QSpinbox in that way:
@class myQSpinBoxDirect: public QSpinBox
{
Q_OBJECT

public:
myQSpinBoxDirect(QWidget *parent = 0,int minimum = 0, int maximum = 1000000);
~myQSpinBoxDirect();

bool event(QEvent *event);

protected:
numPadLinked *num;
};@

@myQSpinBoxDirect::myQSpinBoxDirect(QWidget * parent, int minimum, int maximum):QSpinBox(parent)
{
this->setButtonSymbols(QAbstractSpinBox::NoButtons);
this->setParent(parent);
this->setMinimum(minimum);
this->setMaximum(maximum);
this->show();

num=new numPadLinked(0,false);
connect(num,SIGNAL(value_changed_int(int)),this,SLOT(setValue(int)));
connect(num,SIGNAL(closing()),num,SLOT(deleteLater()));
connect(num,SIGNAL(ok()),num,SLOT(deleteLater()));
num->show("");
num->raise();
num->activateWindow();

}

myQSpinBoxDirect::~myQSpinBoxDirect()
{
int i = 0;
}

bool myQSpinBoxDirect::event(QEvent *event)
{

if(QSpinBox::event(event)){
    qDebug()<<event->type();
    return true;
}else{
    return false;
}

}
@

The problem is when the numpad i showed the mySpinBoxDirect loose the focus(maybe) and is destroyed so I can't change the value by the numpad.

On windows platform it works fine in linux doesn't.

Any suggestions?