---
title: QueryInterface
framework: IOKit
role: symbol
role_heading: Instance Property
platforms: [Mac Catalyst 13.0+, macOS 10.0+]
path: iokit/iocfplugininterfacestruct/1412423-queryinterface
---

# QueryInterface

## Declaration

```swift
var QueryInterface: ((UnsafeMutableRawPointer?, REFIID, UnsafeMutablePointer<LPVOID?>?) -> HRESULT)!
```