---
title: "init(window:oldScaleFactor:oldColorSpace:)"
framework: appkit
role: symbol
role_heading: Initializer
path: "appkit/nswindow/didchangebackingpropertiesmessage/init(window:oldscalefactor:oldcolorspace:)"
---

# init(window:oldScaleFactor:oldColorSpace:)

## Declaration

```swift
init(window: NSWindow, oldScaleFactor: CGFloat? = nil, oldColorSpace: NSColorSpace? = nil)
```