---
title: kCFPlugInDynamicRegisterFunctionKey
framework: corefoundation
role: symbol
role_heading: Global Variable
path: corefoundation/kcfplugindynamicregisterfunctionkey
---

# kCFPlugInDynamicRegisterFunctionKey

Used to specify a plug-in’s registration function.

## Declaration

```swift
let kCFPlugInDynamicRegisterFunctionKey: CFString!
```

## See Also

### Constants

- [kCFPlugInDynamicRegistrationKey](corefoundation/kcfplugindynamicregistrationkey.md)
- [kCFPlugInUnloadFunctionKey](corefoundation/kcfpluginunloadfunctionkey.md)
- [kCFPlugInFactoriesKey](corefoundation/kcfpluginfactorieskey.md)
- [kCFPlugInTypesKey](corefoundation/kcfplugintypeskey.md)