---
title: kCIApplyOptionUserInfo
framework: coreimage
role: symbol
role_heading: Global Variable
path: coreimage/kciapplyoptionuserinfo
---

# kCIApplyOptionUserInfo

Information needed by a callback. The associated value is an object that Core Image will pass to any callbacks invoked for that filter.

## Declaration

```swift
let kCIApplyOptionUserInfo: String
```

## See Also

### Constants

- [kCIApplyOptionExtent](coreimage/kciapplyoptionextent.md)
- [kCIApplyOptionDefinition](coreimage/kciapplyoptiondefinition.md)
- [kCIApplyOptionColorSpace](coreimage/kciapplyoptioncolorspace.md)