I strongly suggest to use 30 because spec changed a lot.

Doesn't seem to work either (on yesterdays 30):

| m |
m := ListModel new items: #(a b c).
m when: #doubleClick send: #traceCr to: Transcript.
m on: #doubleClick send: #traceCr to: Transcript.
"need doubleclick announcement?"
m openWithSpec

Maybe there's some spec mechanism for adding the EventHandler stuff
to the morphs it creates?

greetings,
Lo