---
title: "init(splitView:dividerIndex:userResize:)"
framework: appkit
role: symbol
role_heading: Initializer
path: "appkit/nssplitview/didresizesubviewsmessage/init(splitview:dividerindex:userresize:)"
---

# init(splitView:dividerIndex:userResize:)

## Declaration

```swift
init(splitView: NSSplitView, dividerIndex: Int? = nil, userResize: Bool? = nil)
```