---
title: "windowDidUpdate(_:)"
framework: appkit
role: symbol
role_heading: Instance Method
path: "appkit/nswindowdelegate/windowdidupdate(_:)"
---

# windowDidUpdate(_:)

Tells the delegate that the window received an update() message.

## Declaration

```swift
@MainActor optional func windowDidUpdate(_ notification: Notification)
```

## Parameters

- `notification`: A notification named doc://com.apple.appkit/documentation/AppKit/NSWindow/didUpdateNotification

## Discussion

Discussion You can retrieve the window object in question by sending object to notification.