---
title: OSNotificationHeader
framework: IOKit
role: symbol
role_heading: Structure
platforms: [Mac Catalyst 13.0+, macOS 10.10+]
path: iokit/osnotificationheader
---

# OSNotificationHeader

## Declaration

```swift
struct OSNotificationHeader
```

## Topics

### Initializers

- [init()](iokit/osnotificationheader/1514872-init.md)

### Instance Properties

- [reference](iokit/osnotificationheader/1455523-reference.md)
- [size](iokit/osnotificationheader/1455560-size.md)
- [type](iokit/osnotificationheader/1455562-type.md)