What exactly is a QPainter state?

[ChrisW67]

The information includes all information needed to save and restore the QPainter to an identical state. From a user perspective this includes things like current fonts, pens, brushes, clipping regions, transforms, composition mode, opacity etc. The state may also include internal information the QPainter needs to preserve. Once you have called save() you can change anything you like, paint anything, and be sure you can return to the saved state with a restore() call.

[tuli]

alright, thank you very much!