Let a window still be resizable after a programatical resize in a SwiftUI MacOS AppKit App

Question

I′m building a SwiftUI Mac App. It′s main window shall be resizable as normal in MacOS.
With a Button I want to resize the window programaticly.
That works fine with the code below.
After the programatic resizing the window cannot be resized anymore by the user(via mouse).
How can this be accomplished?

struct MainView1: View {

  @State var width : CGFloat = .infinity
  var body: some View {
    SomeView(width: $width)
      .background(Color.red)
      .frame(width: width)
  }
}


struct SomeView: View {

  @Binding var width : CGFloat

  var body: some View {

    GeometryReader{geometry in
      VStack{
        Text("geometry width:(geometry.size.width)")
        Text("geometry hight:(geometry.size.height)")
        Button("Set width = 200"){width = 200}
        Text("width:(width)")
      }//
      .background(Color.yellow)
      //.frame(width: geometry.size.height, height: geometry.size.height)
    }
  }
}

Answer 1

等待大神答复