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# didCloseWindow(_:)

Called by the app when a window is closed to fire appropriate events with only this extension.

```
func didCloseWindow(_ closedWindow: any WKWebExtensionWindow)
```

## Parameters

`closedWindow`

The window that was closed.

## Discussion

This method informs only the specific extension of the closure of a window. If the intention is to inform all loaded extensions consistently, you should use the respective method on the extension controller instead.

## See Also

[`didOpenWindow(_:)`](/documentation/WebKit/WKWebExtensionContext/didOpenWindow(_:))

Called by the app when a new window is opened to fire appropriate events with only this extension.

[`openWindows`](/documentation/WebKit/WKWebExtensionContext/openWindows)

The open windows that are exposed to this extension.


---

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