Check has created with new

[wirasto]

How to check object has created with new ? I tried like this, but not work

Tahede *_tahede;
//_tahede=new Tahede(this);
if (_tahede)
{
	qDebug() << "Created before";
 
	_tahede->exec();
}
else
{
	qDebug() << "Create now";
 
	_tahede=new Tahede(this);
	_tahede->exec();
}

Tahede *_tahede;
//_tahede=new Tahede(this);
if (_tahede)
{
	qDebug() << "Created before";

	_tahede->exec();
}
else
{
	qDebug() << "Create now";

	_tahede=new Tahede(this);
	_tahede->exec();
}

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Application output window only give me message...

Created before
QDialog::exec: Recursive call detected