---
title: document
framework: appkit
role: symbol
role_heading: Instance Property
path: appkit/nswindowcontroller/document
---

# document

The document associated with the window controller.

## Declaration

```swift
unowned(unsafe) var document: AnyObject? { get set }
```

## Discussion

Discussion The value of this property is nil if no document is associated with the window. When a window controller is added to a document’s list of window controllers, the document uses this property to set the window controller’s document; you should not set this property. AppKit uses this property to access the document for relevant next-responder messages.

## See Also

### Accessing the Document

- [setDocumentEdited(_:)](appkit/nswindowcontroller/setdocumentedited(_:).md)