Draw line between widgets

Hi everyone,
I want to draw a line which will go through 3 label (l1,l2,l3).These labels are inside stacked widgets.
Please help me how to do this ?

Thanks.

If you want something like this Attachment 8349
you can place your labels inside a QFrame and layout the horizontally or vertically then set the frame's shape to QFrame::HLine or QFrame::VLine. QFrame::Shape