Drawing widgets (such as buttons) over QGraphicsView

Question

How do I draw interactive widgets such as QButtons and Line Edits over a QGraphicsView? For ex, I have selected a region over an image in an image editing app which displays

Answer 1

QGraphicsScene has a function addWidget() where you can add a widget to a scene. If you don't want to go through the scene addWidget function you can create a QGraphicsProxyWidget use setWidget() and add the proxy widget to your scene.