I have a puzzle in using the scroll wheel in Pharo 3.0. Lately I have been playing with Moose 4.8, which I think is Pharo 2.0 plus some extras, and with a fresh download of Pharo 3.0. In the Moose image, if I open a system browser, for example, I find that the scroll wheel will scroll whichever pane the cursor is in. In Pharo 3.0, it is necessary to make a pane active, by clicking in it, before it can be scrolled. I find the first possibility more convenient; for example, if I click in the categories pane to make it active, it almost always has the effect of making a selection from among the visible categories, which is not what I want. Is there any easy way of fixing the Pharo 3 image so that it will have the effect of scrolling the pane - or the window - which contains the cursor? I have searched the settings browser headings, but I could not find anything that looked relevant.

Some years ago, I poked into the innards of Dolphin Smalltalk and tweaked it to produce the effect I want. It was not a major change, so it might be educational for me to try the same trick in Pharo. Still, as there is a version that does what I want, I thought I would ask if it can be done just by changing a setting.