Informs the receiver that new set of touches has been recognized.
- macOS 10.6+
An event object representing the beginning of a touch.
The event will be sent to the view under the touch in the key window. To get the set of touches that began for this view (or descendants of this view) send [event touchesMatchingPhase:NSTouchPhaseBegan inView:self].
This is not always the point of contact with the touch device. A touch that transitions from resting to active may be part of a