# CFDataGetBytePtr(_:) Returns a read-only pointer to the bytes of a CFData object. ``` func CFDataGetBytePtr(_ theData: CFData!) -> UnsafePointer! ``` ## Parameters `theData` The CFData object to examine. ## Return Value A read-only pointer to the bytes associated with `theData`. ## Discussion This function is guaranteed to return a pointer to a CFData object’s internal bytes. CFData, unlike CFString, does not hide its internal storage. --- Copyright © 2026 Apple Inc. All rights reserved. | [Terms of Use](https://www.apple.com/legal/internet-services/terms/site.html) | [Privacy Policy](https://www.apple.com/privacy/privacy-policy)