Apple Inc.
Devices, Methods, and User Interfaces for Processing Touch Events

Abstract:

A device with a multi-touch panel displays a user interface, and detects a touch input on the multi-touch panel at a position corresponding to a respective portion of the user interface. In response, the device transmits, to a software application for the respective portion of the user interface, a touch event data structure that describes the touch input, wherein the touch event data structure includes a tap count field that indicates a tap count, indicating how many taps have been sequentially performed at the position of the touch input.