---
title: lock()
framework: Core Graphics
role: symbol
role_heading: Instance Method
platforms: [iOS 26.0+, iPadOS 26.0+, Mac Catalyst 26.0+, macOS 26.0+, tvOS 26.0+, visionOS 26.0+, watchOS 26.0+]
path: coregraphics/cgrenderingbufferprovider/info/lock()
---

# lock()

## Declaration

```swift
func lock() -> UnsafeMutableRawPointer?
```