Re: DisplayListener

> Nice to hear from you again. For your problem, I suggest
> calling:
>   display.addDisplayListener(listener);
> before:
>   display.addReferences(renderer, data_ref);
> It could be that by the time you call addDisplayListener(),
> the display is already done transforming and rendering the
> data, which is triggered by the call to addReferences().

Thank you very much Bill, at the first sight I think it is working. 
I am going to test it.

Greetings Desiree