From Zero To One – This, I hope, should be the last article on multi-touch support for mobile devices. All that was missing in my implementation was support for detecting the control that was touched and getting relative coordinates inside that control along side with screen coordinates that I was already exposing. Today I saw this SO post. Someone was using my code, but was unable to get the local coordinates and control that was being touched. So I took the challenge and threw together some support for this, on all supported devices. Basically, what changed, is the touch event record. It now looks like this. ...
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