SDKs
- iOS 3.2+
- macOS 10.5+
- Mac Catalyst 13.0+
- tvOS 9.0+
- watchOS 2.0+
Framework
- Core Text
Declaration
let kCTFontFeatureSelectorIdentifierKey: CFString
Discussion
Key to be used with a selector dictionary corresponding to a feature type to obtain the selector identifier value as a CFNumber object.