I'm unburying this topic, because Pharo 4 got released, so there probably won't be any need for Pharo 3 compatibility anymore. I removed my method translating Pharo 3 MouseWheelEvent directions into Pharo 4 ones, so in Pharo 4 (and 5) TRMouseWheelEvent instance creation will save few nanoseconds (which could once make almost a millisecond of your life! :) ), but in Pharo 3 mouse wheel will do nothing.
I'm unburying this topic, because Pharo 4 got released, so there probably
won't be any need for Pharo 3 compatibility anymore.
I removed my method translating Pharo 3 MouseWheelEvent directions into
Pharo 4 ones, so in Pharo 4 (and 5) TRMouseWheelEvent instance creation will
save few nanoseconds (which could once make almost a millisecond of your
life! :) ), but in Pharo 3 mouse wheel will do nothing.

Former-commit-id: 896431ca0c38db3a3f42d998b4c743bafadb3929
ObjectProfile/Roassal2