---
title: RegionToRectsProcPtr
framework: Application Services
role: symbol
role_heading: Type Alias
platforms: [macOS 10.0+]
path: applicationservices/regiontorectsprocptr
---

# RegionToRectsProcPtr

## Declaration

```swift
typealias RegionToRectsProcPtr = (UInt16, RgnHandle?, UnsafePointer<Rect>?, UnsafeMutableRawPointer?) -> OSStatus
```