mac 隐藏titlebar

self.window.titlebarAppearsTransparent = true;
self.window.titleVisibility = .hidden
self.window.toolbar = nil
self.window.styleMask.insert(.fullSizeContentView)

func scene(_ scene: UIScene, willConnectTo session: UISceneSession, options connectionOptions: UIScene.ConnectionOptions) {
    
    guard let windowScene = (scene as? UIWindowScene) else { return }
    
    #if targetEnvironment(macCatalyst)
    if let titlebar = windowScene.titlebar {
        titlebar.titleVisibility = .hidden
        titlebar.toolbar = nil
    }
    #endif

}

修改close button 位置
https://stackoverflow.com/questions/30085631/nswindow-change-positions-of-window-buttons