# CFURLCreateDataAndPropertiesFromResource(_:_:_:_:_:_:) Loads the data and properties referred to by a given URL. ``` func CFURLCreateDataAndPropertiesFromResource(_ alloc: CFAllocator!, _ url: CFURL!, _ resourceData: UnsafeMutablePointer?>!, _ properties: UnsafeMutablePointer?>!, _ desiredProperties: CFArray!, _ errorCode: UnsafeMutablePointer!) -> Bool ``` ## Parameters `alloc` The allocator to use to allocate memory for the new `CFData` and `CFDictionary` objects returned in `resourceData` and `properties`. Pass `NULL` or kCFAllocatorDefault to use the current default allocator. `url` The URL referring to the data and/or properties you wish to load. `resourceData` On return, contains a `CFData` object containing the data referred to by `url`. 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). `properties` On return, a pointer to a `CFDictionary` object containing the resource properties referred to by `url`. 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). `desiredProperties` A list of the properties you wish to obtain and return in `properties`. 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` `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 `true` if successful, `false` otherwise. ## Discussion If you are interested in loading only the resource data or the resource’s properties, pass `NULL` for the one you don’t want. If `properties` is non-`NULL` and `desiredProperties` is `NULL` then all properties are fetched. Note that as much work as possible is done even if `false` is returned. For instance, if one property is not available, the others are fetched anyway. This function is intended for convenience, not performance. --- 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)