i suppose it's a bug . in majority of widgets constructor with Element argument is protected. even a comment in source code of canvas it should be protected not private:
/** * Protected constructor. Use {@link #createIfSupported()} to create a Canvas. */ private Canvas(CanvasElement element) { setElement(element); } i think you should raise the issue in gwt-contributors group. -- You received this message because you are subscribed to the Google Groups "Google Web Toolkit" group. To post to this group, send email to google-web-toolkit@googlegroups.com. To unsubscribe from this group, send email to google-web-toolkit+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/google-web-toolkit?hl=en.