<!--
{
  "availability" : [
    "macOS: -"
  ],
  "documentType" : "symbol",
  "framework" : "AppKit",
  "identifier" : "/documentation/AppKit/NSApplication/keyWindow",
  "metadataVersion" : "0.1.0",
  "role" : "Instance Property",
  "symbol" : {
    "kind" : "Instance Property",
    "modules" : [
      "AppKit"
    ],
    "preciseIdentifier" : "c:objc(cs)NSApplication(py)keyWindow"
  },
  "title" : "keyWindow"
}
-->

# keyWindow

The window that currently receives keyboard events.

```
weak var keyWindow: NSWindow? { get }
```

## Discussion

The value of this property is `nil` when there is no window receiving keyboard events. The property might be `nil` because the app’s storyboard file has not yet finished loading or when the receiver is not active.

## See Also

[`isKeyWindow`](/documentation/AppKit/NSWindow/isKeyWindow)

A Boolean value that indicates whether the window is the key window for the application.


---

Copyright &copy; 2026 Apple Inc. All rights reserved. | [Terms of Use](https://www.apple.com/legal/internet-services/terms/site.html) | [Privacy Policy](https://www.apple.com/privacy/privacy-policy)