Can a widget be notified if it's parent changed?

[bibasmall]

Hi all!
I have several dock widgets in my project, all of which contain widgets that are subclasses of the same base class (this class is QWidget subclass). In this base class, I want to implement layout margins recalculation in case the parent widget is a dock widget and the dock area has been changed (via a connection to QDockWidget signal). The point is my class knows nothing about a dock widget wrapper and it needs to be notified that the parent is changed when it's put inside a dock widget to create a connection.
There is an ugly way to achieve my needs by calling something like MyBaseClass::DockParentSet every time after QDockWidget::setWidget and create a connection in this function, but I would prefer to encapsulate this detail if possible.
Is there an elegant way to notify a widget if its parent has changed?

[bibasmall]

I was looking for

bool MyBaseClass::event(QEvent* e)
{
	if (e->type() == QEvent::DynamicPropertyChange && qobject_cast<QDockWidget*>(parent())) 
	//...
}