Qt vs Gtk:
- The main two multiplatform toolkits. Not going away soon, many examples, big communities
- Qt chosen because it has better documentation (at the first glance), I have a tiny knowledge of it and Gtk feels a bit stubborn…
	- Interlinked, not just separate concepts. I found the wrong drag'n'drop at the first time…
	- The complete drag'n'drop example already part of documentation (examples/widgets/graphicsview/diagramscene)
		- IDK whether it will support image export…