I'm trying to do something that should be very simple.  I have a clock
model that I want to tick over every second.  Then I want to hand that
model to a Morphic viewer to display.

I initially set up a ticker process, based on some code in Mark
Guzdial's Squeak&MMA book, section 4.2.  It worked fine, except
periodically morphic windows that were being updated would be trashed.

So, figuring that I had an unfortunate timing issue between the Morphic
updater and the asynch process, I changed my clock model to extend Morph
and use the #step method to update the clock (which led to a crash
documented on Mantis, but I was directed to a work-around).  It now
works fine, except the step method gets called once for every view I
have open, as well as the intended one, so my clock goes up in
increments of 2 or 3 seconds per second.

My original thought was to have the ticker insert events into Morphic's
event queue, but (a) I couldn't quite track it down, and (b) from what I
found, it seemed to test the class of the events rather than simply
dispatch them.

Help!

Thanks  ../Dave