---
title: ATSFontQueryCallback
framework: Application Services
role: symbol
role_heading: Type Alias
platforms: [Mac Catalyst 13.0+, macOS 10.2+]
path: applicationservices/atsfontquerycallback
---

# ATSFontQueryCallback

## Declaration

```swift
typealias ATSFontQueryCallback = (ATSFontQueryMessageID, CFPropertyList?, UnsafeMutableRawPointer?) -> Unmanaged<CFPropertyList>?
```