Hi,
I am using a macbook pro with a magic mouse. On the trackpad all movements are very smooth out of the box. I can rotate in all directions with 2 finger swipes, pressing shift at the same time gives me pans and if I pinch I can zoom. With the magic mouse it is also very smooth and natural; I can rotate and pan with 1 finger (pressing shift to pan) but I can not zoom by pinching. I think it is because Apple took of the option of pinching with the magic mouse one or 2 OS versions ago.
Now I try to change the preferences so I could ALT + scroll with the mouse to zoom but the config screen is not taking in account the gesture on the magic mouse. Is there a way I can intruduce this manually, I mean by code?