Keeping QWidgets as private QWIdget subclass members

[mtrpoland]

Is it ok to declare for example QLabel as a private member of some CustomWidget class and "place" it in CustomWidget using setParent or Layouts...

class CustomWidget : public QWidget {
Q_OBJECT
public:
CustomWidget(QWidget *parent = 0);
private:
QLabel oneL;
};

class CustomWidget : public QWidget {
Q_OBJECT
public:
CustomWidget(QWidget *parent = 0);
private:
QLabel oneL;
};

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What about Qt's "garbage collector" in this case?
Shall I rather keep pointers to QWidgets I want to use in my CustomWidget instance?
What differs these two methods?