Called when a touch event associated with the control is updated.
- iOS 2.0+
- Mac Catalyst 13.0+
- tvOS 9.0+
The touch object containing updated information.
The event object containing the touch event.
YES if the control should continue tracking touch events or
NO if it should stop. This value is used to update the
tracking property of the control.
This method is called repeatedly while a touch event is being tracked inside the control’s bounds. The default implementation of this method always returns
YES. Subclasses can override this method and use it to update their state based on changes to the touch event. If you want to continue tracking the touch event, return
YES. If you want to stop tracking the touch event, return