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# dismissWindow

A window dismissal action stored in a view’s environment.

```
var dismissWindow: DismissWindowAction { get }
```

## Discussion

Use the `dismissWindow` environment value to get an
[`DismissWindowAction`](/documentation/SwiftUI/DismissWindowAction) instance for a given [`Environment`](/documentation/SwiftUI/Environment). Then call
the instance to dismiss a window. You call the instance directly because
it defines a [`callAsFunction(id:)`](/documentation/SwiftUI/DismissWindowAction/callAsFunction(id:)) method that
Swift calls when you call the instance.

For example, you can define a button that dismisses an auxiliary window:

```
@main
struct MyApp: App {
    var body: some Scene {
        WindowGroup {
            ContentView()
        }
        #if os(macOS)
        Window("Auxiliary", id: "auxiliary") {
            AuxiliaryContentView()
        }
        #endif
    }
}

struct DismissWindowButton: View {
    @Environment(\.dismissWindow) private var dismissWindow

    var body: some View {
        Button("Close Auxiliary Window") {
            dismissWindow(id: "auxiliary")
        }
    }
}
```

If the window was opened with [`pushWindow`](/documentation/SwiftUI/EnvironmentValues/pushWindow), the
presenting window will reappear when this action is performed.

---

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