I found that even using the gwt stockwatcher sample code and add a button to show the DialogBox also has this problem
StockWatcher.java in GWT tutorial private Button showDialogBox = new Button("show"); showDialogBox.addClickHandler(new ClickHandler(){ ... addPanel.add(showDialogBox); ...... @Override public void onClick(ClickEvent event) { // TODO Auto-generated method stub DialogBox1 dialogBox1 = new DialogBox1(); dialogBox1.setSize("1000px", "800px"); dialogBox1.center(); dialogBox1.show(); } the dialogbox1 is just a DialogBox object as follow: package com.google.gwt.sample.stockwatcher.client; import com.google.gwt.user.client.ui.DialogBox; public class DialogBox1 extends DialogBox{ public void onLoad(){ this.setAnimationEnabled(true); this.setGlassEnabled(true); } } before click the show button, everything is normal, the DialogBox is not shown yet. After click the show button, the DialogBox shown is very strange, with strange line occur in the DialogBox. this time I try to use Firefox 5.0 and IE8 and both have this problem!! -- 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.