[Interest] Child widget drawing over parent?

[Etienne Sandré-Chardonnal]

Dear all,

I have the following issue. A widget is defined as a QFrame subclass, and
uses the frame style defined by setFrameStyle(QFrame::Box | QFrame::Sunken)
in the constructor.

This widget uses a QHBoxLayout, with one stretch, and one "SpinDial" child
widget that I have defined elsewhere. As you can imagine, this is for
making a custom spin box.

As you can see on the attached picture, the frame is broken by the
SpinDial, as if it was drawing over the parent. To me, it means that either:
 - The child widget is drawing outside its boundaries, which is normally
not possible.
 - The QFrame has set an improper setContentsMargin
 - The frame drawing is bugged, the bottom border is drawn one pixel higher
than it should

Any idea?

I'm using Qt 4.8.1 under Windows 7  ( MinGW64 gcc )

Thanks,

Etienne
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