---
title: FMFontCallbackFilterProcPtr
framework: Application Services
role: symbol
role_heading: Type Alias
platforms: [Mac Catalyst 13.0+]
path: applicationservices/fmfontcallbackfilterprocptr
---

# FMFontCallbackFilterProcPtr

## Declaration

```swift
typealias FMFontCallbackFilterProcPtr = (FMFont, UnsafeMutableRawPointer?) -> OSStatus
```