import SwiftUI

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

   var body: some View {
      VStack {
         Text("Auxiliary View")
            .padding()
         Button("Close Window") {
            dismissWindow(id: "mywindow")
         }.buttonStyle(.bordered)
      }
      .frame(minWidth: 300, maxWidth: .infinity, minHeight: 200, maxHeight: .infinity)
   }
}