Problem about Graphics View Framework

[wysota]

I don't think QGraphicsView is a good architecture to implement a raster based painting application. The thing is you don't have objects there, you operate on the bitmap directly. Of course you can use QGraphicsView but it won't give you that many benefits. Using plain QWidget might be easier for such a simple application. If you want to go beyond Paint and implement features such as layers, etc. then graphics view might be helpful.