[vtkusers] QVTKWidget signal/slot question

Luis Roberto P. Paula luisrpp at gmail.com
Wed Mar 18 17:58:52 EDT 2009

Are you using it on linux with compiz-fusion or high detail graphic effects

It happened to me too until I disable compiz.

- Luis

On Wed, Mar 18, 2009 at 6:12 PM, John Eke <johne at annidis.com> wrote:

>  Hi,
> I currently have a Qt dialog with a slider. The valueChanged signal from
> this slider is connected to a slot in my QVTKWidget subclass which performs
> some Window-Level modifications on a vtkImageActor inside the renderer.
> In the vtk example (Examples/GUI/Qt/ImageViewer) dragging the mouse across
> the image is fast enough. So why does it get ridiculously slow when I send
> the commands through a slot? Is there a way I can speed it up?
> - John E
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