Thanks - that's very informative. Especially interesting for me. Firstly I've been playing around with a similar example and was at least on the right track, though my several hours have only yielded half the solution so far :-) Secondly, and much more importantly, it has given me a bit of an insight into how real smalltalk developers work. I had never really understood the productivity gains that this environment can give you over and above all the other IDEs for other languages that I have used previously. Seeing the debugger being used to dynamically create stuff as you need it was a revelation :-) -- View this message in context: http://forum.world.st/Pharocasts-GUI-with-Polymorph-tp3257888p3280217.html Sent from the Pharo Smalltalk Users mailing list archive at Nabble.com.