---
title: UIWindow.DidBecomeKeyMessage
framework: uikit
role: symbol
role_heading: Structure
path: uikit/uiwindow/didbecomekeymessage
---

# UIWindow.DidBecomeKeyMessage

## Declaration

```swift
struct DidBecomeKeyMessage
```

## Topics

### Initializers

- [init(window:)](uikit/uiwindow/didbecomekeymessage/init(window:).md)

### Instance Properties

- [window](uikit/uiwindow/didbecomekeymessage/window.md)

## Relationships

### Conforms To

- [NotificationCenter.MainActorMessage](foundation/notificationcenter/mainactormessage.md)
- [SendableMetatype](swift/sendablemetatype.md)