---
title: CTFontDescriptorProgressHandler
framework: coretext
role: symbol
role_heading: Type Alias
path: coretext/ctfontdescriptorprogresshandler
---

# CTFontDescriptorProgressHandler

The progress callback type.

## Declaration

```swift
typealias CTFontDescriptorProgressHandler = (CTFontDescriptorMatchingState, CFDictionary) -> Bool
```

## Discussion

Discussion Use this callback type with CTFontDescriptorMatchFontDescriptorsWithProgressHandler(_:_:_:).

## See Also

### Data Types

- [ATSFontRef](coretext/atsfontref.md)
- [CTFontCollectionSortDescriptorsCallback](coretext/ctfontcollectionsortdescriptorscallback.md)