Best Practice - delete pointer QAbstractButton in QMessageBox

[estanisgeyer]

Good day,
In this example below, delete the pointer is correct for the QAbstractButton or not I do that? What is the best practice?

QMessageBox msg(QMessageBox::Warning, tr("APP"),
					QMessageBox::tr("blablablablablabla"), 0, this);
 
	QAbstractButton *sim = msg.addButton(tr("&Sim"), QMessageBox::AcceptRole);
	QAbstractButton *nao = msg.addButton(tr("&Não"), QMessageBox::RejectRole);
	msg.exec();
 
	delete sim;
	delete nao;
 
	if (msg.clickedButton() == sim)
	{
              ......
        }

QMessageBox msg(QMessageBox::Warning, tr("APP"),
					QMessageBox::tr("blablablablablabla"), 0, this);

	QAbstractButton *sim = msg.addButton(tr("&Sim"), QMessageBox::AcceptRole);
	QAbstractButton *nao = msg.addButton(tr("&Não"), QMessageBox::RejectRole);
	msg.exec();

	delete sim;
	delete nao;
	
	if (msg.clickedButton() == sim)
	{
              ......
        }

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Thanks,

Marcelo E. Geyer
Brazil