---
title: kIOSystemStateClamshellKey
framework: IOKit
role: symbol
role_heading: Global Variable
platforms: [iOS 16.0+, iPadOS 16.0+, Mac Catalyst 15.0+, macOS 12.0+, visionOS 1.0+]
path: iokit/kiosystemstateclamshellkey
---

# kIOSystemStateClamshellKey

## Declaration

```swift
var kIOSystemStateClamshellKey: String { get }
```