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# wantsScrollEventsForSwipeTracking(on:)

Implement this method to track gesture scroll events such as a swipe.

```
func wantsScrollEventsForSwipeTracking(on axis: NSEvent.GestureAxis) -> Bool
```

## Parameters

`axis`

The event gesture axis of the swipe, which defines the scroll direction.

## Return Value

<doc://com.apple.documentation/documentation/Swift/true> if gesture scroll events are to be forwarded up the responder chain; otherwise <doc://com.apple.documentation/documentation/Swift/false>. The default implementation returns <doc://com.apple.documentation/documentation/Swift/false>.

## Discussion

Implement this method in your swipe controller and return <doc://com.apple.documentation/documentation/Swift/true> to inform views that perform elastic scrolling to forward gesture scroll events up the responder chain. The events are forwarded only on the following condition: the content to be scrolled is already at the edge of the scrolled direction when the scroll gesture begins. Otherwise, the view performs elastic scrolling. The default implementation returns <doc://com.apple.documentation/documentation/Swift/false>.

## See Also

[`-  trackSwipeEventWithOptions:dampenAmountThresholdMin:max:usingHandler:`](/documentation/AppKit/NSEvent/trackSwipeEvent(options:dampenAmountThresholdMin:max:usingHandler:))

Allows tracking and user interface feedback of scroll wheel events.


---

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