Custom QItemDelegate destroy editor on focus out



  • 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?


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