Memory leak from promoted class of QDoubleSpinBox

[summit]

I am promoting the QDoubleSpinBox class as i want to catch the mouseDoubleClick Event.

This is the Promoted class.

class SumDoubleBox : public QDoubleSpinBox
{
    Q_OBJECT
public:

    explicit SumDoubleBox(QWidget* parent = nullptr);   
    void stepBy(int steps) override;
protected:
    virtual void focusInEvent(QFocusEvent *e) override;         
public slots:       
    void setZero();

signals:
    int signalUndoRedo();

private:
    double m_defaultStep = 1.0;
};

SumDoubleBox::SumDoubleBox(QWidget* parent) : QDoubleSpinBox(parent)
{
    SumLineEdit* lineEdit = new SumLineEdit(this);
    setLineEdit(lineEdit);
    setMinimum(0.0);
    setMaximum(99999.0);
}

Since i am creating a pointer in the Constructor of the SumDoubleBox Class.

SumLineEdit* lineEdit = new SumLineEdit(this);
``

Do i need to Explicitly delete this in the Destructor ?

Defination of SumLineEdit Class.

class SumLineEdit : public QLineEdit
{
    Q_OBJECT

public:
    explicit SumLineEdit(QWidget* parent = nullptr) {   };
protected:
    void mouseDoubleClickEvent(QMouseEvent* event) override;
};


void SumLineEdit::mouseDoubleClickEvent(QMouseEvent* event)
{
    if (event->button() == Qt::LeftButton)
    {
        selectAll();
        event->accept();
        return;
    }
    QLineEdit::mouseDoubleClickEvent(event);
}

[JonB]

@summit said in Memory leak from promoted class of QDoubleSpinBox:

Do i need to Explicitly delete this in the Destructor ?

No, because new SumLineEdit(this) https://doc.qt.io/qt-6/qabstractspinbox.html#setLineEdit

QAbstractSpinBox takes ownership of the new lineEdit

[summit]

@JonB Thank you very much for the answer.