You have to make sure that you directly call Window.open() in the ClickHandler. Don't to it in a Timer, deferred command or similar inside the ClickHandler. The Browser must recognize that Window.open() is directly called because of a user action. It does not matter if its a Button or an Anchor. Also don't do Window.open() somewhere deep in a sub function called inside the ClickHandler.
Something like the following will work: Button b = new Button("Test"); b.addClickHandler(new ClickHandler() { void onClick(ClickEvent e) { Window.open("http://www.google.de", "_blank", ""); } }); If you wrap Window.open() for example in a Timer it won't work anymore. -- J. -- You received this message because you are subscribed to the Google Groups "Google Web Toolkit" group. To view this discussion on the web visit https://groups.google.com/d/msg/google-web-toolkit/-/AgiBk4VnjUEJ. 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.