---
title: SetDeviceIsAlive
framework: audiodriverkit
role: symbol
role_heading: Instance Method
path: audiodriverkit/iouseraudioclockdevice/setdeviceisalive
---

# SetDeviceIsAlive

Sets a Boolean value to represent whether the device is alive.

## Declaration

```occ
kern_return_t SetDeviceIsAlive(bool in_is_alive);
```

## Parameters

- `in_is_alive`: true if the device is alive; otherwise, false.

## Return Value

Return Value kIOReturnSuccess on success, or another value if an error occurs. For a list of error codes, see Error Codes.

## Discussion

Discussion A true value means the device is ready and available. false means the device is unusable and will most likely go away shortly.

## See Also

### Working with Clock Device State

- [GetDeviceIsRunning](audiodriverkit/iouseraudioclockdevice/getdeviceisrunning.md)
- [GetDeviceIsAlive](audiodriverkit/iouseraudioclockdevice/getdeviceisalive.md)
- [SetIsHidden](audiodriverkit/iouseraudioclockdevice/setishidden.md)
- [GetIsHidden](audiodriverkit/iouseraudioclockdevice/getishidden.md)