---
title: IOUSBHostControllerInterfaceCommandHandler
framework: IOUSBHost
role: symbol
role_heading: Type Alias
platforms: [Mac Catalyst 14.0+, macOS 10.15+]
path: iousbhost/iousbhostcontrollerinterfacecommandhandler
---

# IOUSBHostControllerInterfaceCommandHandler

## Declaration

```swift
typealias IOUSBHostControllerInterfaceCommandHandler = (IOUSBHostControllerInterface, IOUSBHostCIMessage) -> Void
```

## See Also

### Data Types

- [IOUSBHostCIDoorbell](iousbhost/iousbhostcidoorbell.md)
- [IOUSBHostCIPortStatus](iousbhost/iousbhostciportstatus.md)
- [IOUSBHostControllerInterfaceDoorbellHandler](iousbhost/iousbhostcontrollerinterfacedoorbellhandler.md)
- [IOUSBHostIsochronousTransactionCompletionHandler](iousbhost/iousbhostisochronoustransactioncompletionhandler.md)