subWindow could not be drag event setDraggble

I create a button, when click the button, will prompt out a subwindow.  In Vaddin api doc, set the window class is default Draggable is true.
However, the window could not be drag in my Vaddin UI, Event I set the subWindow.setDraggable(true);
Does anything know is it a bug? I am using IE8

                    @Override
                    public void buttonClick(Button.ClickEvent event) {
                        LinkedHashMap resultItem = (LinkedHashMap)event.getButton().getData();

                        BulkbookingSubWindow subWindow = new BulkbookingSubWindow(resultItem);
                        subWindow.setImmediate(true);
                        UI.getCurrent().addWindow(subWindow);

Anybody has encoutered the sam issue???

die.....

anybody met this?

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Hi Jason.

I read through your post and code example and I'm left with a couple of questions. You have a "BulkbookingSubWindow" class, which I can't know how it's constructed. Does it use some special modes? I used as much of the same code as you had there and I was not able to reproduce this. Could you make a minimal test case with just Vaadin components and post it either here or our issue tracker at http://dev.vaadin.com ? That would make it easier to first see the issue, and then fix it.

//Teemu

I'm having the same difficulty. Everything is working fine except that it is not draggable. I have this:

public class HelpWindow extends Window implements View {        public void setupWindow() {                        VerticalLayout welcomeContainer = new VerticalLayout();            setContent(welcomeContainer);    

        }

        @Override
        public void enter(ViewChangeEvent event) {
            // TODO Auto-generated method stub
            
        }

}

Then I have this:

public void buttonClick(ClickEvent event) {                HelpWindow helpWindow = new HelpWindow();

                // Add it to the root component
                UI.getCurrent().addWindow(helpWindow);
                helpWindow.setHeight("500px");
                helpWindow.setWidth("500px");
                helpWindow.setPosition(70,60);
                helpWindow.setImmediate(true);
                helpWindow.setDraggable(true);
}

Thee are some other lines of code in both of these files, but I am getting no build errors, and it all works fine except for setDraggable(true);.