# `NSNotification.Name.GSDocumentWillCloseNotification`

*Type Property*

Posted before a document window closes.

## Declaration

```swift
static let GSDocumentWillClose: NSNotification.Name
```

```objc
extern NSNotificationName const GSDocumentWillCloseNotification;
```

```python
GSDocumentWillCloseNotification: NSNotificationName
```

## Discussion

The notification object is the document.