[vtkusers] Callback not firing?

[John Platt]

Hi David,

I noticed you were using a rubber band interactor. Is the redraw of the band 
on mouse move done at an acceptable rate when the image is at full screen. 
If so, what o/s?

Many thanks.

John.

----- Original Message ----- 
From: "David Doria" <daviddoria+vtk at gmail.com>
Cc: <vtkusers at vtk.org>
Sent: Monday, October 19, 2009 6:51 PM
Subject: Re: [vtkusers] Callback not firing?


> On Mon, Oct 19, 2009 at 10:35 AM, Jeff Baumes <jeff.baumes at kitware.com> 
> wrote:
>> I don't see in your code the line:
>>
>> style->AddObserver(vtkCommand::SelectionChangedEvent,SelectionChangedCallback);
>>
>> The interactor style invokes the event, so you need to attach the
>> callback to it.
>>
>> Jeff
>>
>
> Thanks Jeff - that did it. This is exactly the type of thing I am
> trying to sort out and make examples of for the wiki (although I think
> the better solution is still for better documentation in the classes
> themselves so the doxygen pages contain this type of information).
>
> Another thing: I tried to override this function:
>
> void vtkInteractorStyleRubberBand2D::OnLeftButtonUp()
> {
>  vtkstd::cout << "LeftButtonUp!" << vtkstd::endl;
> }
>
> but now when I release the button the rubberband outline is not
> erased. I'm assuming I have to "forward" the event to whichever
> function was going to handle this before I overrode the function - how
> would I find out which function that is / how to do that?
>
> Thanks,
>
> David
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