---
title: copiesOnScroll
framework: appkit
role: symbol
role_heading: Instance Property
path: appkit/nsclipview/copiesonscroll
---

# copiesOnScroll

A Boolean value that indicates if the clip view copies rendered images while scrolling.

## Declaration

```swift
var copiesOnScroll: Bool { get set }
```

## Discussion

Discussion When the value of this property is true, the clip view copies its existing rendered image while scrolling (only drawing exposed portions of its document view); when it is false, the view forces its contents to be redrawn each time.