[vtkusers] QVTKWidget and VtkImageViewer issue

[Clinton Stimpson]

I'm not aware of any issues.  Usually the problem is how it is set up.

Maybe break one of your calls out into two:

vtkRenderWindowInteractor* iren = this->mQvtkWidget->GetRenderWindow()-
>GetInteractor();
this->mVtkImageViewer->SetupInteractor(iren);

And check if iren is indeed what it should be (not NULL and an instance of 
QVTKInteractor).

Clint

On Tuesday 23 February 2010 11:51:27 am Peter von Niederhaeusern wrote:
> Mmm...that doesn't seem to work.
> 
> Are there any known issues with the QVTKWidget and ImageViewers?
> 
> I had this combo already used before (with a slight abstraction layer
> put in between)
> without any  problems...I'm puzzled.
> 
> On Mon, Feb 22, 2010 at 4:03 PM, KS Jothybasu <jothybasu at gmail.com> wrote:
> > Have you tried ImageViewer.Render()?
> >
> > And, you should set the windowtitle after Render()/Show(), I think....
> >
> > Jothy
> >
> >
> >
> > On Mon, Feb 22, 2010 at 1:34 PM, Peter von Niederhaeusern
> >
> > <pvonnied at gmail.com> wrote:
> >> Hi all,
> >>
> >> I googled around to find a solution for the following issue but without
> >> success:
> >> In a slot of my MainGui class I create a QVTKWidget and a
> >> VtkImageViewer. The image viewer receives a volume from an itk to vtk
> >> filter (to read in some DICOM data).
> >>
> >> Upon signaling the slot, the QVTKWidget gets painted but NOT its content
> >> (the volume from the image viewer). The widget just hangs there with a
> >> stale background
> >> (when dragged around)...
> >>
> >> ================
> >> void MainWindow::OnButtonPressed( void )
> >> {
> >> ...
> >> this->mQvtkWidget = new QVTKWidget();
> >> this->mQvtkWidget->setWindowTitle( "Test" );
> >>
> >> this->mVtkImageViewer = vtkImageViewer::New();
> >> this->mVtkImageViewer->SetInput( obj.VtkUnsigned8BitVolume );
> >>
> >> this->mQvtkWidget->SetRenderWindow(
> >> this->mVtkImageViewer->GetRenderWindow() );
> >> this->mVtkImageViewer->SetupInteractor(
> >> this->mQvtkWidget->GetRenderWindow()->GetInteractor() );
> >>
> >> this->mQvtkWidget->update();
> >> his->mQvtkWidget->show();
> >> ...
> >> }
> >> ================
> >>
> >> Frameworks: Qt 4.5.2 (2009.03), vtk-5.4.2, gcc (GCC) 3.4.5
> >> (mingw-vista special r3), Itk 3.16
> >> Platform: Windows Vista (64bit)
> >>
> >> I know that this is a rather often occuring issue, but I'm unable to
> >> find a solution/workaround.
> >>
> >> Thank you for your help.
> >>
> >> Best regards,
> >> Peter
> >> _______________________________________________
> >> Powered by www.kitware.com
> >>
> >> Visit other Kitware open-source projects at
> >> http://www.kitware.com/opensource/opensource.html
> >>
> >> Please keep messages on-topic and check the VTK FAQ at:
> >> http://www.vtk.org/Wiki/VTK_FAQ
> >>
> >> Follow this link to subscribe/unsubscribe:
> >> http://www.vtk.org/mailman/listinfo/vtkusers
> 
> _______________________________________________
> Powered by www.kitware.com
> 
> Visit other Kitware open-source projects at
>  http://www.kitware.com/opensource/opensource.html
> 
> Please keep messages on-topic and check the VTK FAQ at:
>  http://www.vtk.org/Wiki/VTK_FAQ
> 
> Follow this link to subscribe/unsubscribe:
> http://www.vtk.org/mailman/listinfo/vtkusers
>