---
title: AddRef
framework: IOKit
role: symbol
role_heading: Instance Property
platforms: [Mac Catalyst 13.0+, macOS 10.0+]
path: iokit/iocfplugininterfacestruct/1412440-addref
---

# AddRef

## Declaration

```swift
var AddRef: ((UnsafeMutableRawPointer?) -> ULONG)!
```