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How do I enable multi-touch in Firefox 4 RC?

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Tried to use pinch and zoom => not working in my freshly installed Firefox 4 RC. Is there an enabling setting?

Tried to use pinch and zoom => not working in my freshly installed Firefox 4 RC. Is there an enabling setting?

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SOLUTION :
1) Open a new tab
2) In the address bar type "about:config" without quotes
3) In filter search for "pinch"
4) Modify your string value (that are empty) like that :

    browser.gesture.pinch.in             -> cmd_fullZoomReduce
browser.gesture.pinch.in.shift -> cmd_fullZoomReset
browser.gesture.pinch.out -> cmd_fullZoomEnlarge
browser.gesture.pinch.out.shift -> cmd_fullZoomReset

5) Restart Firefox
6) Now you have pinch to zoom

Modified by Andrea Memo