I want to draw shapes with a border of various widths.
If I set width = 0 though, I expect (imagine) that here will be no border... yet I read that the border 0 is very thin ("cosmetic") border.
How can I draw my shapes with invisible border ?
int penWidth = 0; // some user input, 0 to 20 maybe
QPen pen = QPen(Qt::red, penWidth, Qt::PenStyle(Qt::SolidLine));
You can simply set no pen, i.e.:
In this case it will not draw a border line at all.