# CollapsibleSectionImpl.CREATEHOSTFROMCPPPROC delegate

Namespace: [Rhino.UI.Controls](https://developer.rhino3d.com/api/rhinocommon/namespace/rhino.ui.controls.md) · Assembly: [RhinoCommon](https://developer.rhino3d.com/api/rhinocommon/assembly/rhinocommon.md)

```cs
public delegate CollapsibleSectionImpl.CREATEHOSTFROMCPPPROC
```

**Signature:**

```cs
nint CollapsibleSectionImpl.CREATEHOSTFROMCPPPROC(nint client)
```

**Parameters:**

- `client` ([nint](https://learn.microsoft.com/dotnet/api/system.intptr))