---
title: ControlRequest
framework: IOKit
role: symbol
role_heading: Instance Property
platforms: [Mac Catalyst 18.4+, macOS 10.14+]
path: iokit/iousbinterfaceinterface942/2977191-controlrequest
---

# ControlRequest

## Declaration

```occ
IOReturn (*ControlRequest)(void *self, UInt8 pipeRef, IOUSBDevRequest *req);
```