---
title: powerStateHandler
framework: kernel
role: symbol
role_heading: Type Method
path: kernel/iohidsystem/2544879-powerstatehandler
---

# powerStateHandler

## Declaration

```occ
static IOReturn powerStateHandler(void *target, void *refCon, UInt32 messageType, IOService *service, void *messageArgument, vm_size_t argSize);
```