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# hasPreciseScrollingDeltas

A Boolean value that indicates whether precise scrolling deltas are available.

```
var hasPreciseScrollingDeltas: Bool { get }
```

## Discussion

This property is set to <doc://com.apple.documentation/documentation/Swift/true> if precise scrolling deltas are available; otherwise, <doc://com.apple.documentation/documentation/Swift/false>.

This property is valid for [`NSScrollWheel`](/documentation/AppKit/NSScrollWheel) events. A generic scroll wheel issues rather coarse scroll deltas. Some mice and trackpads provide much more precise delta. This method determines how the values of the [`scrollingDeltaX`](/documentation/AppKit/NSEvent/scrollingDeltaX) and [`scrollingDeltaY`](/documentation/AppKit/NSEvent/scrollingDeltaY) should be interpreted.

---

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