Re: Move a picture around in richtextbox using mouse to (Drag-Drop) in a new location
RTB's use their own proprietary language. You can download the specs as a 600+ page pdf, but, I'd advise against it. I've created a dummy page with a picturebox in the right location. The program inserts text and formatting, and also a picture of the item created.
It's been working since 2006.