---
title: IOUserClientMethodFunction
framework: driverkit
role: symbol
role_heading: Type Alias
path: driverkit/iouserclientmethodfunction
---

# IOUserClientMethodFunction

## Declaration

```occ
typedef int (*)(class OSObject *, void *, struct IOUserClientMethodArguments *) IOUserClientMethodFunction;
```

## See Also

### Responding to Messages

- [ExternalMethod](driverkit/iouserclient/externalmethod.md)
- [IOUserClientMethodArguments](driverkit/iouserclientmethodarguments.md)
- [IOUserClientMethodDispatch](driverkit/iouserclientmethoddispatch.md)