---
title: UIContentSizeCategory.DidChangeMessage
framework: uikit
role: symbol
role_heading: Structure
path: uikit/uicontentsizecategory/didchangemessage
---

# UIContentSizeCategory.DidChangeMessage

## Declaration

```swift
struct DidChangeMessage
```

## Topics

### Initializers

- [init(contentSize:screen:)](uikit/uicontentsizecategory/didchangemessage/init(contentsize:screen:).md)

### Instance Properties

- [contentSize](uikit/uicontentsizecategory/didchangemessage/contentsize.md)
- [screen](uikit/uicontentsizecategory/didchangemessage/screen.md)

## Relationships

### Conforms To

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