---
title: "ATSFontFamilyApplyFunction(_:_:)"
framework: Application Services
role: symbol
role_heading: Function
platforms: [Mac Catalyst 13.1+]
path: applicationservices/1563672-atsfontfamilyapplyfunction
---

# ATSFontFamilyApplyFunction(_:_:)

## Declaration

```swift
func ATSFontFamilyApplyFunction(_ iFunction: ATSFontFamilyApplierFunction!, _ iRefCon: UnsafeMutableRawPointer!) -> OSStatus
```