know the position of the finger in the trackpad under Mac OS X

Question

I am developing an Mac application and I would like to know the position of the finger in the trackpad when there is a touch.

Is it something possible and if yes, ho

Answer 1

At a Cocoa (Obj-C level) try the following - although remember that many users are still using mouse control.

http://developer.apple.com/mac/library/documentation/cocoa/conceptual/EventOverview/HandlingTouchEvents/HandlingTouchEvents.html