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

# ATSUDirectLayoutOperationOverrideProcPtr

## Declaration

```swift
typealias ATSUDirectLayoutOperationOverrideProcPtr = (ATSULayoutOperationSelector, ATSULineRef?, URefCon?, UnsafeMutableRawPointer?, UnsafeMutablePointer<ATSULayoutOperationCallbackStatus>?) -> OSStatus
```