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

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

                    BulkbookingSubWindow subWindow = new BulkbookingSubWindow(resultItem);

Anybody has encoutered the sam issue???


anybody met this?


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 ? That would make it easier to first see the issue, and then fix it.


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

[font=courier new]
public class HelpWindow extends Window implements View {

public void setupWindow() {

        VerticalLayout welcomeContainer = new VerticalLayout();


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


Then I have this:

[font=courier new]
public void buttonClick(ClickEvent event) {
HelpWindow helpWindow = new HelpWindow();

            // Add it to the root component


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);.