Displaying a SwiftUI view from a MenuBar only app

import AppKit
import SwiftUI

struct MyAlertView: View {
    var body: some View {
        VStack {
            Text("This is a SwiftUI view in an alert.")
            Button("OK") {
                // Handle button action
            }
        }
        .frame(width: 300, height: 200)
    }
}

func activateApp() {
    let myApp = NSRunningApplication.current
    myApp.activate(options: .activateIgnoringOtherApps)
}

func showAlertWithSwiftUIView() {
    let panel = NSPanel(contentRect: NSRect(x: 0, y: 0, width: 300, height: 200),
                        styleMask: [.titled, .closable, .fullSizeContentView],
                        backing: .buffered,
                        defer: false)
    panel.title = "Alert"
    panel.center()

    activateApp()
    panel.makeKeyAndOrderFront(nil)

    let hostingView = NSHostingView(rootView: MyAlertView(isPresented: .init(get: {
        panel.isVisible
    }, set: { isVisible in
        if !isVisible {
            panel.orderOut(nil)
        }
    })))
    panel.contentView = hostingView
}