# ColorSyncIterateInstalledProfiles(_:_:_:_:) Iterates over the installed profiles. ``` func ColorSyncIterateInstalledProfiles(_ callBack: ColorSyncProfileIterateCallback?, _ seed: UnsafeMutablePointer?, _ userInfo: UnsafeMutableRawPointer?, _ error: UnsafeMutablePointer?>?) ``` ## Parameters `callBack` A pointer to a client-provided function (can be `NULL`). `seed` A pointer to a cache seed owned by the client (can be `NULL`). `userInfo` User-defined data passed to the callback. `error` On failure, a pointer to an error describing the problem. Optional. ## Discussion When called for the first time, this function returns only system profiles, because profile iteration is a slow process requiring multiple accesses to the file system. Clients are advised to register for [`kColorSyncProfileRepositoryChangeNotification`](/documentation/ColorSync/kColorSyncProfileRepositoryChangeNotification) using `CFNotificationCenter` or `NSNotificationCenter` to obtain all installed profiles. The notification callback receives, if possible, a `CFDictionary` containing a new seed value of the profile cache (key [`kColorSyncProfileCacheSeed`](/documentation/ColorSync/kColorSyncProfileCacheSeed) / value `kCFNumberSInt32Type`). Comparing old and new seed values may prevent unnecessary calls to iterate installed profiles. Alternatively, call [`ColorSyncIterateInstalledProfilesWithOptions(_:_:_:_:_:)`](/documentation/ColorSync/ColorSyncIterateInstalledProfilesWithOptions(_:_:_:_:_:)) with the [`kColorSyncWaitForCacheReply`](/documentation/ColorSync/kColorSyncWaitForCacheReply) option set to `kCFBooleanTrue` to obtain all installed profiles in one call. --- 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)