[vtkusers] Problem with vtkImageViewer2 and QVTKWidget

[Clinton Stimpson]

If I replace vtkImageViewer with vtkImageViewer2 in the 
VTK/Examples/GUI/Qt/ImageViewer example, it works fine.
Your errors indicate something wrong with how you've set up the image 
pipeline, not with how you've set up the window.

Clint

Luis Roberto P. Paula wrote:
> Is there anyone in this group that have used vtkImageViewer2 with 
> QVTKWidget successfully?
>
> Am I wrong to think that QVTKWidget works only with vtkImageViewer?
>
> Thanks,
> Luis
>
> On Mon, Nov 10, 2008 at 7:47 PM, Luis Roberto P. Paula 
> <luisrpp at gmail.com <mailto:luisrpp at gmail.com>> wrote:
>
>     Hi All,
>
>     I'm trying to use the vtkImageViewer2 to display a 2D image in a
>     QVTKWidget, but I'm getting some errors.
>
>     Here is a piece of code:
>
>        image_viewer = vtkImageViewer2::New();
>        qvtkWidget->SetRenderWindow(image_viewer->GetRenderWindow());
>        image_viewer->SetInput(get2DImage());
>        image_viewer->Render();
>
>     Error messages:
>
>     ERROR: In
>     /home/luis/dev-tools/VTK/Filtering/vtkDemandDrivenPipeline.cxx,
>     line 725
>     vtkStreamingDemandDrivenPipeline (0x8ba9890): Input port 0 of
>     algorithm vtkImageMapToWindowLevelColors(0x8b62358) has 0
>     connections but is not optional.
>
>     ERROR: In
>     /home/luis/dev-tools/VTK/Filtering/vtkDemandDrivenPipeline.cxx,
>     line 725
>     vtkStreamingDemandDrivenPipeline (0x8ba9890): Input port 0 of
>     algorithm vtkImageMapToWindowLevelColors(0x8b62358) has 0
>     connections but is not optional.
>
>     ERROR: In
>     /home/luis/dev-tools/VTK/Filtering/vtkDemandDrivenPipeline.cxx,
>     line 725
>     vtkStreamingDemandDrivenPipeline (0x8ba9890): Input port 0 of
>     algorithm vtkImageMapToWindowLevelColors(0x8b62358) has 0
>     connections but is not optional.
>
>     ERROR: In
>     /home/luis/dev-tools/VTK/Filtering/vtkDemandDrivenPipeline.cxx,
>     line 725
>     vtkStreamingDemandDrivenPipeline (0x8ba9890): Input port 0 of
>     algorithm vtkImageMapToWindowLevelColors(0x8b62358) has 0
>     connections but is not optional.
>
>     ERROR: In /home/luis/dev-tools/VTK/Rendering/vtkImageActor.cxx,
>     line 267
>     vtkOpenGLImageActor (0x8ba93e0): This filter requires unsigned
>     char scalars as input
>
>     ERROR: In
>     /home/luis/dev-tools/VTK/Filtering/vtkDemandDrivenPipeline.cxx,
>     line 725
>     vtkStreamingDemandDrivenPipeline (0x8ba9890): Input port 0 of
>     algorithm vtkImageMapToWindowLevelColors(0x8b62358) has 0
>     connections but is not optional.
>
>     ERROR: In
>     /home/luis/dev-tools/VTK/Filtering/vtkDemandDrivenPipeline.cxx,
>     line 725
>     vtkStreamingDemandDrivenPipeline (0x8ba9890): Input port 0 of
>     algorithm vtkImageMapToWindowLevelColors(0x8b62358) has 0
>     connections but is not optional.
>
>     ERROR: In
>     /home/luis/dev-tools/VTK/Filtering/vtkDemandDrivenPipeline.cxx,
>     line 725
>     vtkStreamingDemandDrivenPipeline (0x8ba9890): Input port 0 of
>     algorithm vtkImageMapToWindowLevelColors(0x8b62358) has 0
>     connections but is not optional.
>
>     ERROR: In
>     /home/luis/dev-tools/VTK/Filtering/vtkDemandDrivenPipeline.cxx,
>     line 725
>     vtkStreamingDemandDrivenPipeline (0x8ba9890): Input port 0 of
>     algorithm vtkImageMapToWindowLevelColors(0x8b62358) has 0
>     connections but is not optional.
>
>     ERROR: In /home/luis/dev-tools/VTK/Rendering/vtkImageActor.cxx,
>     line 267
>     vtkOpenGLImageActor (0x8ba93e0): This filter requires unsigned
>     char scalars as input
>
>     ERROR: In
>     /home/luis/dev-tools/VTK/Filtering/vtkDemandDrivenPipeline.cxx,
>     line 725
>     vtkStreamingDemandDrivenPipeline (0x8ba9890): Input port 0 of
>     algorithm vtkImageMapToWindowLevelColors(0x8b62358) has 0
>     connections but is not optional.
>
>     ERROR: In
>     /home/luis/dev-tools/VTK/Filtering/vtkDemandDrivenPipeline.cxx,
>     line 725
>     vtkStreamingDemandDrivenPipeline (0x8ba9890): Input port 0 of
>     algorithm vtkImageMapToWindowLevelColors(0x8b62358) has 0
>     connections but is not optional.
>
>     ERROR: In
>     /home/luis/dev-tools/VTK/Filtering/vtkDemandDrivenPipeline.cxx,
>     line 725
>     vtkStreamingDemandDrivenPipeline (0x8ba9890): Input port 0 of
>     algorithm vtkImageMapToWindowLevelColors(0x8b62358) has 0
>     connections but is not optional.
>
>     ERROR: In
>     /home/luis/dev-tools/VTK/Filtering/vtkDemandDrivenPipeline.cxx,
>     line 725
>     vtkStreamingDemandDrivenPipeline (0x8ba9890): Input port 0 of
>     algorithm vtkImageMapToWindowLevelColors(0x8b62358) has 0
>     connections but is not optional.
>
>     ERROR: In /home/luis/dev-tools/VTK/Rendering/vtkImageActor.cxx,
>     line 267
>     vtkOpenGLImageActor (0x8ba93e0): This filter requires unsigned
>     char scalars as input
>
>     -------------------------------------------------------------------------------------------
>
>     Does anybody knows how to fix this? It works with the
>     vtkImageViewer class, but I think the vtkImageViewer2 is a better
>     option to display a 2D image in a widget.
>
>     Thank's
>     Luis
>
>
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