SandDock is our award-winning window management software that enables dockable floating windows, tabbed documents and other advanced window management functionality in applications that use it. We have ported this technology to the Silverlight platf

这玩意应该听说过吧。还是很强的 内附二个ＤＬＬ，已解除未注册字样。 已实际测试过

支持C#等开发语言的控件插件，方便实用，可以进行二次开发。