---
title: kCTFontFeatureTypeExclusiveKey
framework: coretext
role: symbol
role_heading: Global Variable
path: coretext/kctfontfeaturetypeexclusivekey
---

# kCTFontFeatureTypeExclusiveKey

## Declaration

```swift
let kCTFontFeatureTypeExclusiveKey: CFString
```

## Discussion

Discussion Key to get the font feature exclusive setting of the feature as a CFBoolean object. The value associated with this key indicates whether the feature selectors associated with this type should be mutually exclusive.

## See Also

### Constants

- [kCTFontFeatureTypeIdentifierKey](coretext/kctfontfeaturetypeidentifierkey.md)
- [kCTFontFeatureTypeNameKey](coretext/kctfontfeaturetypenamekey.md)
- [kCTFontFeatureTypeSelectorsKey](coretext/kctfontfeaturetypeselectorskey.md)
- [kCTFontFeatureSelectorIdentifierKey](coretext/kctfontfeatureselectoridentifierkey.md)
- [kCTFontFeatureSelectorNameKey](coretext/kctfontfeatureselectornamekey.md)
- [kCTFontFeatureSelectorDefaultKey](coretext/kctfontfeatureselectordefaultkey.md)
- [kCTFontFeatureSelectorSettingKey](coretext/kctfontfeatureselectorsettingkey.md)
- [kCTFontFeatureSampleTextKey](coretext/kctfontfeaturesampletextkey.md)
- [kCTFontFeatureTooltipTextKey](coretext/kctfontfeaturetooltiptextkey.md)