Hi Marcel,

On 2012-Feb-5, at 2:04 , Marcel Taeumel wrote:

> You need to call #startStepping if you want #step to get called frequently
> according to #stepTime.

Actually you don't with Squeak 4.2 and Pharo 1.3 (don't know about earlier versions), because Morph>>initialize does that. But just for completeness, I did that, and it made no difference.  My class is just:

MorphExp>>initialize
	super initialize.
	self startStepping.
	self color: Color red lighter
MorphExp>>step
	self halt
MorphExp>>stepAt: t
	self halt

and it doesn't halt if it is a subclass of SystemWindow, but does if it's any higher up the hierarchy.

> Nevertheless, you may want to take a closer look at this project:
> https://www.hpi.uni-potsdam.de/hirschfeld/trac/SqueakCommunityProjects/wiki/animations

Thanks, but I don't want the issue about unloading, and I'm not worried about it being super-smooth animation.

Also thanks for the link, because it looks like interesting things are happening at HPI!

../Dave