---
title: OSNotificationHeader64
framework: IOKit
role: symbol
role_heading: Structure
platforms: [iOS 18.4+, iPadOS 18.4+, Mac Catalyst 13.0+, macOS 10.6+, visionOS 2.4+]
path: iokit/osnotificationheader64
---

# OSNotificationHeader64

## Declaration

```swift
struct OSNotificationHeader64
```

## Topics

### Instance Properties

- [reference](iokit/osnotificationheader64/1455547-reference.md)
- [size](iokit/osnotificationheader64/1455592-size.md)
- [type](iokit/osnotificationheader64/1455613-type.md)

### Initializers

- [init()](iokit/osnotificationheader64/1514395-init.md)