window.collectionBehavior = .fullScreenNone 可以禁止全屏 查看文档

class AppDelegate: NSObject, NSApplicationDelegate {
    func applicationDidFinishLaunching(_ notification: Notification) {
        
        if let window = NSApplication.shared.windows.first {
            window.collectionBehavior = .fullScreenNone // 禁止全屏
        }
    }

    func applicationShouldTerminateAfterLastWindowClosed(_ sender: NSApplication) -> Bool {
        return true
    }
}


struct ContentView: View {

   @NSApplicationDelegateAdaptor(AppDelegate.self) var delegate

   var body: some View {
        Text("Hello")
            .frame(width: 500, height: 500, alignment: .center)
    }
}