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# callAsFunction(id:)

Dismisses the window that’s associated with the specified identifier.

```
@MainActor @preconcurrency func callAsFunction(id: String)
```

## Parameters

`id`

The identifier of the scene to dismiss.

## Discussion

When the specified identifier represents a [`WindowGroup`](/documentation/SwiftUI/WindowGroup), all of the
open windows in that group will be dismissed. For dismissing a single
window associated to a `WindowGroup` scene, use
`dismissWindow(value:)` or `dismissWindow(id:value:)`.

Don’t call this method directly. SwiftUI calls it when you
call the [`dismissWindow`](/documentation/SwiftUI/EnvironmentValues/dismissWindow) action with an identifier:

```
dismissWindow(id: "message")
```

For information about how Swift uses the `callAsFunction()` method to
simplify call site syntax, see
[Methods with Special Names](https://docs.swift.org/swift-book/documentation/the-swift-programming-language/declarations#Methods-with-Special-Names)
in *The Swift Programming Language*.

---

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