---
title: CFPlugInDynamicRegisterFunction
framework: corefoundation
role: symbol
role_heading: Type Alias
path: corefoundation/cfplugindynamicregisterfunction
---

# CFPlugInDynamicRegisterFunction

A callback which provides a plug-in the opportunity to dynamically register its types with a host.

## Declaration

```swift
typealias CFPlugInDynamicRegisterFunction = (CFPlugIn?) -> Void
```

## Parameters

- `plugIn`: The CFPlugIn object that is engaged in dynamic registration. When using in C++, this parameter functions as a this pointer for the plug-in.

## Discussion

Discussion This callback is called as a plug-in is being loaded. This provides the plugin the means to dynamically register its types and factories with a plug-in’s host. The call is triggered by the presence of kCFPlugInDynamicRegistrationKey in the plug-in’s information property list.

## See Also

### Callbacks

- [CFPlugInFactoryFunction](corefoundation/cfpluginfactoryfunction.md)
- [CFPlugInUnloadFunction](corefoundation/cfpluginunloadfunction.md)