how to shift the focus to enter

[gu574vo]

I tried using this way but I did not succeed, the focus disappears and does not go to the next.

void Login::keyPressEvent(QKeyEvent *event)
{
	if(event->key()==Qt::Key_Enter)
	{
		this->nextInFocusChain()->setFocus();
 
	}
}

void Login::keyPressEvent(QKeyEvent *event)
{
	if(event->key()==Qt::Key_Enter)
	{
		this->nextInFocusChain()->setFocus();
		
	}
}

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thanks for help!