Ask Different is a question and answer site for power users of Apple hardware and software. It's 100% free, no registration required.

Sign up
Here's how it works:
  1. Anybody can ask a question
  2. Anybody can answer
  3. The best answers are voted up and rise to the top

In earlier versions of OS X (Snow Leopard, maybe?), middle-click on an open application's icon in the Dock would have the same effect as right-click -> show all windows.

In (Mountain) Lion, this is no longer the case. Middle clicking on the icons in the dock has no effect whatsoever.

Does anyone know how to bring this functionality back?

share|improve this question
In Snow Leopard (10.6.8) this also does not work. Are you sure this was not a third party app behaviour? – Saaru Lindestøkke Dec 25 '12 at 22:26
@Bart absolutely positive. I dislike 3rd party "system utilities" on OS X. Must have been Leopard, then. (Using external USB mouse, of course) – Mahmoud Al-Qudsi Dec 26 '12 at 5:51

I didn't find any hidden preferences for it with gdb, but there is a preference that makes scrolling up show all windows:

defaults write scroll-to-open -bool true
killall Dock
share|improve this answer

Your Answer


By posting your answer, you agree to the privacy policy and terms of service.

Not the answer you're looking for? Browse other questions tagged or ask your own question.