---
title: "ATSFontApplyFunction(_:_:)"
framework: Application Services
role: symbol
role_heading: Function
platforms: [Mac Catalyst 13.1+]
path: applicationservices/1563664-atsfontapplyfunction
---

# ATSFontApplyFunction(_:_:)

## Declaration

```swift
func ATSFontApplyFunction(_ iFunction: ATSFontApplierFunction!, _ iRefCon: UnsafeMutableRawPointer!) -> OSStatus
```