# CFURLEnumeratorGetNextURL(_:_:_:) Advances an enumerator to the next URL. ``` func CFURLEnumeratorGetNextURL(_ enumerator: CFURLEnumerator!, _ url: UnsafeMutablePointer?>!, _ error: UnsafeMutablePointer?>!) -> CFURLEnumeratorResult ``` ## Parameters `enumerator` The enumerator. `url` Contains the next URL if this function returns [`CFURLEnumeratorResult.success`](/documentation/CoreFoundation/CFURLEnumeratorResult/success). `error` Contains error information if this function returns [`CFURLEnumeratorResult.error`](/documentation/CoreFoundation/CFURLEnumeratorResult/error). Error information is retained and must be released. Can be `NULL`. ## Return Value The result of advancing the enumerator. ## Discussion If this function returns [`CFURLEnumeratorResult.end`](/documentation/CoreFoundation/CFURLEnumeratorResult/end), the enumeration has finished. A return value of [`CFURLEnumeratorResult.error`](/documentation/CoreFoundation/CFURLEnumeratorResult/error) does not imply that the enumeration has finished. If this function returns [`CFURLEnumeratorResult.error`](/documentation/CoreFoundation/CFURLEnumeratorResult/error), the user info dictionary of `error` is populated with the following entries (when possible): - The [`kCFErrorUnderlyingErrorKey`](/documentation/CoreFoundation/kCFErrorUnderlyingErrorKey) entry is populated with the underlying error if the underlying error is not in the [`kCFErrorDomainCocoa`](/documentation/CoreFoundation/kCFErrorDomainCocoa) domain. - The entry is populated with the URL that caused the error, as a [`CFURL`](/documentation/CoreFoundation/CFURL) object. - The entry is populated with the file path that caused the error, as a [`CFString`](/documentation/CoreFoundation/CFString) object. ## See Also [`CFURLEnumeratorResult`](/documentation/CoreFoundation/CFURLEnumeratorResult) Result codes from the [`CFURLEnumeratorGetNextURL(_:_:_:)`](/documentation/CoreFoundation/CFURLEnumeratorGetNextURL(_:_:_:)) function. --- 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)