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I am using a MacBook Air running OS X 10.7 (Lion) with Screen Sharing application to view the display of a Linux box running Emacs. I need a mouse middle click. How can I generate a mouse-middle click event from the Macintosh without an external mouse?

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For the wheel being rolled, have you tried scrolling with the trackpad as shown in the video in System Preferences » Trackpad? – Daniel Beck May 5 '12 at 12:12
Ah, wheel does work with double fingered scroll, so just need mouse middle click now. – WilliamKF May 5 '12 at 12:26
up vote 4 down vote accepted

This question is similar to one previously posted where Kevin Y suggested BetterTouchTool. I found this to work better than MiddleClick.

Unfortunately the effect of setting a trackpad event to "Middleclick" has drastically different effects depending on the OS and program. because "Middleclick" has no function in OSX if you want to use it natively, I suggest a seperate or similar event to a keyboard shortcut such as ⌘C, or ctrl-C for general use in a Linux environment.

That being said, setting a trackpad event to "Middleclick" works as expected in Emacs.

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  • Wheel (middle) click: not available by default. Try MiddleClick, it seems to work on Lion.

  • Wheel scrolling: Two finger scrolling as shown in the video in System Preferences » Trackpad.

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The MiddleClick does not seem to be doing correct thing. I'm getting <down-mouse-1> event in Emacs when I click with three fingers touching the pad with '3 Finger Click' chosen. – WilliamKF May 5 '12 at 13:15

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