I'm new to squeak and smalltalk, and was wondering if anybody could
offer advice on MVC stuff.

I've written a couple of classes that display histograms inside a
standard system view. Everything seems to be working except that the
view isn't redrawn when it's exposed by another window moving. It
seems like I must be missing something simple. Any hints?

More information: If I red-click on the view, it gets displays itself
nicely. The view in question has a NoController, and is the only
subview of a StandardSystemView that is using a
StandardSystemController.

More generally: I was also wondering if there's any documents on
smalltalk-80 MVC stuff I could read. I've got some idea of what's
going through reading the code for existing stuff, and looking at
"Smalltalk-80 : Interactive Programming Environment" but but I don't
really have a good firm of what's going on, especially with
controllers. 

--
Matthew McDonald <mafm at cs.uwa.edu.au>