---
title: kCTFontVariationAxisHiddenKey
framework: coretext
role: symbol
role_heading: Global Variable
path: coretext/kctfontvariationaxishiddenkey
---

# kCTFontVariationAxisHiddenKey

The key to find out if the axis is hidden.

## Declaration

```swift
let kCTFontVariationAxisHiddenKey: CFString
```

## Discussion

Discussion This key contains a CFBoolean value that is kCFBooleanTrue when the font designer recommends the axis not be exposed directly to end users in application interfaces. Reasons for setting this flag might include that the axis is intended only for programmatic interaction, or is intended for font-internal use by the font developer.

## See Also

### Constants

- [kCTFontVariationAxisIdentifierKey](coretext/kctfontvariationaxisidentifierkey.md)
- [kCTFontVariationAxisMinimumValueKey](coretext/kctfontvariationaxisminimumvaluekey.md)
- [kCTFontVariationAxisMaximumValueKey](coretext/kctfontvariationaxismaximumvaluekey.md)
- [kCTFontVariationAxisDefaultValueKey](coretext/kctfontvariationaxisdefaultvaluekey.md)
- [kCTFontVariationAxisNameKey](coretext/kctfontvariationaxisnamekey.md)