自定义函数，如果不适用MdiLayout布局子窗口，如何实现子窗口自定义排列，比如按照3行2列在父窗口中排列，像下面的排列效果

[SecurityPermission(SecurityAction.LinkDemand, Flags = SecurityPermissionFlag.UnmanagedCode)]
        protected override void WndProc(ref Message m)
        {
            if (m.Msg == (int)Win32.Msgs.WM_LBUTTONDBLCLK)
            {
                base.WndProc(ref m);

                int index = HitTest();
                if (DockPane.DockPanel.AllowEndUserDocking && index != -1)
                {
                    IDockContent content = Tabs[index].Content;
                    if (content.DockHandler.CheckDockState(!content.DockHandler.IsFloat) != DockState.Unknown)
                        content.DockHandler.IsFloat = !content.DockHandler.IsFloat;
                }

                return;
            }

            base.WndProc(ref m);
            return;
        }
，额，那个我已经解决掉了，请问这个可以改成双击变为最大化吗，我试了好多都不行，不知道怎么搞的