Re: onChange event fired twice

do you also add the current changehandler to the recently created
listbox? I mean, while you add the new listbox to the container, this
op fires the second change event, looks like you're nesting your
listboxes, so any change on the child box will propagate to the parent
resulting in second handler call...

you can use the eclipse' debugger to track why the onChange() is
called the second time (in dev mode)

On 28 Nov., 15:08, Leung <leung1_2...@yahoo.com> wrote:
> Hi,
>
> I have a private inner class that implements ChangeHandler. This ChangeHander is applied to the listbox. Each click on the listbox will create another listbox and added to the container. The onChange event is fired twice for one click on the list box.
>
> Let say, I have 2 list box already added to the container. I expect only one onChange is triggered when I click the last listbox. But, now, twice is fired.
>
> How does that happen?
> How can I troubleshoot this problem?
>
> Thanks

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