减小窗口宽度往往会隐藏关闭按钮

Question

使用AvalonDock库，如果我们减小窗口宽度，则关闭按钮将被隐藏。这是错误的。

理想情况下，它应该从右侧隐藏窗口，而不是从左侧隐藏。

我应该为实现这个目标设置什么属性？

layoutAnchorablemXiRegister.Title = "mXi Register";
layoutAnchorablemXiRegister.Content = mXiRegisterWindow;
layoutAnchorablemXiRegister.ContentId = "layoutAnchorablemXiRegister";
layoutAnchorablemXiRegister.FloatingWidth = 380;
layoutAnchorablemXiRegister.FloatingHeight = 560;
layoutAnchorablemXiRegister.Hiding += new EventHandler<CancelEventArgs>(layoutAnchorable_Hiding);
layoutAnchorablemXiRegister.Hide();
layoutAnchorablemXiRegister.IsVisible = false;
layoutAnchorablemXiRegister.CanAutoHide = false;