---
title: kCGImagePropertyAuxiliaryDataType
framework: imageio
role: symbol
role_heading: Global Variable
path: imageio/kcgimagepropertyauxiliarydatatype
---

# kCGImagePropertyAuxiliaryDataType

The type of the auxiliary data.

## Declaration

```swift
let kCGImagePropertyAuxiliaryDataType: CFString
```

## Discussion

Discussion The value of this property is a CFString. The value of this key might be kCGImageAuxiliaryDataTypeDisparity, kCGImageAuxiliaryDataTypeDepth, or another auxiliary data type.

## See Also

### Auxiliary Image Data

- [kCGImagePropertyAuxiliaryData](imageio/kcgimagepropertyauxiliarydata.md)
- [kCGImageAuxiliaryDataInfoData](imageio/kcgimageauxiliarydatainfodata.md)
- [kCGImageAuxiliaryDataInfoDataDescription](imageio/kcgimageauxiliarydatainfodatadescription.md)
- [kCGImageAuxiliaryDataInfoMetadata](imageio/kcgimageauxiliarydatainfometadata.md)