# CFURLCreatePropertyFromResource(_:_:_:_:) Returns a given property specified by a given URL and property string. ``` func CFURLCreatePropertyFromResource(_ alloc: CFAllocator!, _ url: CFURL!, _ property: CFString!, _ errorCode: UnsafeMutablePointer!) -> CFTypeRef! ``` ## Parameters `alloc` The allocator to use to to allocate memory for the new `CFType` object for the requested property. Pass `NULL` or kCFAllocatorDefault to use the current default allocator. `url` The `CFURL` object referring to the resource whose properties are loaded. `property` The name of the property you wish to load. Pass one of the provided string constants indicating the property. See [File URL Properties](/documentation/CoreFoundation/file-url-properties) and [HTTP URL Properties](/documentation/CoreFoundation/http-url-properties) for the list of available properties. `errorCode` On return, `0` if successful, otherwise an error code indicating the nature of the problem. See [`CFURLError`](/documentation/CoreFoundation/CFURLError) for a list of possible error codes. ## Return Value If successful, the requested property as a `CFType` object, `NULL` otherwise. Ownership follows the [The Create Rule](https://developer.apple.com/library/archive/documentation/CoreFoundation/Conceptual/CFMemoryMgmt/Concepts/Ownership.html#//apple_ref/doc/uid/20001148-103029). ## Discussion This is a convenience function for retrieving individual property values which calls through to [`CFURLCreateDataAndPropertiesFromResource(_:_:_:_:_:_:)`](/documentation/CoreFoundation/CFURLCreateDataAndPropertiesFromResource(_:_:_:_:_:_:)). --- 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)