How to make a complex QPushButton form correctly?

Question

Qt

How to make complex button shapes correctly, for example, as in the Qt installer?


Through CSS, you can make rounding or change the thickness of the frame, but how do more complex things?
It seems obvious to draw a button using png with transparency, but then you need to make a separate png for each button size? How to do it right?

Answer 1

Can be done with 9-patch pictures

border-image:  url(":/button.9.png");
border-width: 5px;