Hi again,
Thank you Adam for responding so promptly.
Unfortunately, the toolbox does not fill automatically with PresentationFramework. (see attached screenshot).
Maybe I’m making a mistake, but I don’t see what it is.
I understood that I can add other assemblies with the right-click and choosing “browse”, but that’s not what I want to get now…
I have of course searched the web for solutions, but I can’t find anything conclusive.
Thanks for your help and patience. 
