We had support for a lot more stuff in ShowImage (drag and dropping parts of the image for very crude editing), but we converted it into a true viewer and removed all of this. We need a dedicated paint-like simple editor.
However I see Microsoft is still fialing at UI design. In Windows 7, they “improved” Paint by adding more features to it, vector like drawing, etc. No one likes that, so they made a separate Capture tool with very simple editing support. And in Windows 10 they now supercharged the Capture tool so it is pretty much on-par features with the old Paint…
Let’s try to keep one tool for each use please 