What is class 'Line' in designer?

[Kumosan]

Hi using the designer I can put a line in a frame. In the .ui file it looks like: class "Line".
What class is this 'Line' when I don't want to use the designer? How do I put such a line on a QFrame manually? I am thinking of another QFrame with appropriate line width and height 0. Is there a better, correct way?

[spirit]

it's a QFrame::HLine or QFrame::VLine. so you need use QFrame.

[Kumosan]

Thanks. Somehow missed this feature.