$wnd 是什么？ GWT provides the $wnd and $doc variables to refer to the window and document objects GWT使用通过Java Native method使用它，声明一个native方法，将含有JavaScript的方法体注释。编译器将注释块内的内容逐字输出，使之与编译产生的JavaScript整合到一起。
http://forums.smartclient.com/showthread.php?t=8159 Client Coding Can I mix Smart GWT and GWT widgets? Yes, with caveats. Smart GWT has interoperability support that allows a Smart GWT widget to be added to a GWT container and allows a GWT widget to be added to a Smart GWT container, and it's appropriate to use this for: incremental migration to Smart ...
Reference: http://stackoverflow.com/questions/952220/gwt-with-a-content-management-system http://developer.emc.com/developer/obt/GWT_DmClient.htm http://code.google.com/p/google-web-toolkit/ http://developerlife.com/tutorials/?p=124 http://onjava.com/pub/a/onjava/2006/05/31/working-with-google-web-toolkit.html?page=1 http://ajaxian.com/by/topic/gwt