QWidget - set border from C++ code

Question

I have QWidget instance (with other QWidgets inside) in Qt 5.8 and I want to set some border around it. Is there some way to do this from C++ without affecting any of it's children and their settings and positions?

I don't want to use stylesheets and it needs to work with any system style.

Wideangle

Answer 1

You should use QFrame which inherits QWidget.

Set Frame::Shape in the method below to QFrame::Box. This will produce borders around your Frame:

QFrame::setFrameShape(QFrame::Shape); 

Use setLineWidth to set the line width:

QFrame::setLineWidth(int); 

Sukey