ViewController.swift

 class ViewController: NSViewController , NSWindowDelegate {
    
    override func viewDidAppear() {
        self.view.window?.delegate = self
        //self.view.window?.styleMask.remove(.resizable)
        //self.view.window?.styleMask.remove(.closable)
        //self.view.window?.styleMask.remove(.titled)
        //self.view.window?.styleMask = [.titled, .miniaturizable]
        //self.view.window?.styleMask.remove(.fullSizeContentView)
    
    }
    func windowShouldClose(_ sender: NSWindow) -> Bool {
      // true == close
      // false == not close
        return false;
    }

    func onHideLogin(){
        self.view.window?.orderOut(self)
        // self.view.window?.close()
    }
    
    func onLogoutView(){
        self.view.window?.orderBack(self)
    }
    
    override func viewDidLoad() {
       
    }
}