Drag and drop with clg

Thanks for your work.
I have just started to play with it and I find it really useful. I need to
write some graphic interface to my lisp project, and I think clg could be my
tool.

My question is regarding DragNDrop, I have found an example in python that
could be very useful for me if it could be done with lisp objects in clg.
http://www.moeraki.com/pygtktutorial/pygtk2tutorial/sec-DNDMethods.html#dragndropfig
http://www.moeraki.com/pygtktutorial/pygtk2tutorial/examples/dragndrop.py

With a couple of modifications it could be my starting point cause I just
need to edit position and size of objects.

1. Is it possible to do it with clg? any suggestion or help?  (bitmaps are
not needed, boxes could be enough)
2. One interesting modification would be  the capability to change the size
of the buttons by dragging any corner. any suggestion or help?

Thanks in advance

Report:
Running clg 0.90 in my ubuntu breezy with sbcl, all examples load ok, except
those using scale objects...

Thanks again for your work