---
title: AddControlValueDescriptions
framework: audiodriverkit
role: symbol
role_heading: Instance Method
path: audiodriverkit/iouseraudioselectorcontrol/addcontrolvaluedescriptions
---

# AddControlValueDescriptions

Add value descriptions to the selector control.

## Declaration

```occ
kern_return_t AddControlValueDescriptions(const IOUserAudioSelectorValueDescription *in_value_descriptions, size_t in_num_value_descriptions);
```

## Parameters

- `in_value_descriptions`: An array of doc://com.apple.audiodriverkit/documentation/AudioDriverKit/IOUserAudioSelectorValueDescription values to add as value descriptions for the selector.
- `in_num_value_descriptions`: The number of descriptions in in_value_descriptions.

## Return Value

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

## See Also

### Accessing the Selected Values

- [SetCurrentSelectedValues](audiodriverkit/iouseraudioselectorcontrol/setcurrentselectedvalues.md)
- [GetCurrentSelectedValues](audiodriverkit/iouseraudioselectorcontrol/getcurrentselectedvalues.md)
- [GetControlValuesCount](audiodriverkit/iouseraudioselectorcontrol/getcontrolvaluescount.md)
- [IOUserAudioSelectorValue](audiodriverkit/iouseraudioselectorvalue.md)
- [RemoveControlValueDescriptions](audiodriverkit/iouseraudioselectorcontrol/removecontrolvaluedescriptions.md)
- [GetControlValueDescriptions](audiodriverkit/iouseraudioselectorcontrol/getcontrolvaluedescriptions.md)
- [IOUserAudioSelectorValueDescription](audiodriverkit/iouseraudioselectorvaluedescription.md)