How to view the source code of a function in Qt?

Question

Qt

The bottom line is this, it became interesting how QPainter draws a line, I want to see the body of drawLine, but the problem is that inline is used there, that is, the code is substituted, but where can I find it?

Answer 1

https://code.woboq.org/qt5/include/qt/QtGui/qpaint...