# CentralSettings.PreviewPlaneRadiusChangedEventHandler delegate

Namespace: [Grasshopper](https://developer.rhino3d.com/api/gh1/namespace/grasshopper.md) · Assembly: [Grasshopper](https://developer.rhino3d.com/api/gh1/assembly/grasshopper.md)

```cs
public delegate CentralSettings.PreviewPlaneRadiusChangedEventHandler
```

**Signature:**

```cs
void CentralSettings.PreviewPlaneRadiusChangedEventHandler()
```