Description
This event is reported when the user taps two fingers at the same time on an object
The event message reported as the result of ⎕DQ, or supplied as the right argument to your callback function, is a 5-element vector as follows :
| [1] | Object | ref or character vector |
| [2] | Event | 'GestureTwoFingerTap' or 496 |
| [3] | Flags | integer which reports the state of the gesture |
| [4] | Location | 2-element integer vector containing the y and x-position respectively of the point midway between the two fingers. These are reported in pixel coordinates relative to the origin (top-left corner) of the object reporting the event.. |
| [5] | Distance | 2-element integer vector containing the high and low parts (words) of a 64-bit integer that indicates the distance between the two fingers. |
The Flags parameter [3] which reports the state of the Gesture, is always an integer with the value 5 (GF_BEGIN+GF_END).
| Name | Value | Description |
| GF_BEGIN | 1 | A gesture is starting. |
| GF_END | 4 | A gesture has finished. |
The associated callback is run immediately while the windows notification is still on the stack. See High-Priority Callback Functions.
Returning zero from the callback disables any default handling by the operating system.