[vtkusers] Why I can't create a global vtkPolyData instance?

[Wenlong]

Hi, Alex

Many thanks to your reply. It is working now.

Thank you very much.

Best wishes
Wenlong

2012/5/1 alex Dowson [via VTK] <ml-node+s1045678n5677939h76 at n5.nabble.com>

>  Hi
>
> Can you try this way ?
>
>
> //----------------------------------------------------
> #include <vtkPolyData.h>
> #include <vtkPoints.h>
> #include <vtkCellArray.h>
> #include <vtkGenericDataObjectReader.h>
>
> vtkPolyData* polydata;
> vtkPoints* points;
> vtkCellArray* polygon;
> vtkGenericDataObjectReader* reader;
>
>
> void main()
> {
>     polydata = vtkPolyData::New();
>     points = vtkPoints::New();
>     polygon = vtkCellArray::New();
>     reader = vtkGenericDataObjectReader::New();
>
>     reader->SetFileName("C:\\Users\\Wenlong\\Desktop\\surface.vtk");
>     reader->OpenVTKFile();
>     reader->Update();
>
>     polydata = reader->GetPolyDataOutput();
>     points = polydata->GetPoints();
>     polygon = polydata->GetPolys();
> }
>
>
>  *From:* [hidden email]<http://user/SendEmail.jtp?type=node&node=5677939&i=0>
> *Sent:* Tuesday, May 01, 2012 5:39 PM
> *To:* [hidden email]<http://user/SendEmail.jtp?type=node&node=5677939&i=1>
> *Cc:* [hidden email]<http://user/SendEmail.jtp?type=node&node=5677939&i=2>
> *Subject:* Re: [vtkusers] Why I can't create a global vtkPolyData
> instance?
>
> Hi, David
>
> Here is a short demo code. It is built in an empty console application in
> Windows 7 with Visual Studio 2008(C++)
>
> //----------------------------------------------------
> #include <vtkPolyData.h>
> #include <vtkPoints.h>
> #include <vtkCellArray.h>
> #include <vtkGenericDataObjectReader.h>
>
> vtkPolyData* polydata = vtkPolyData::New();                // error pops
> vtkPoints* points = vtkPoints::New();                           // no error
> vtkCellArray* polygon = vtkCellArray::New();                // no error
> vtkGenericDataObjectReader* reader = vtkGenericDataObjectReader::New();
>
> void main()
> {
>     reader->SetFileName("C:\\Users\\Wenlong\\Desktop\\surface.vtk");
>     reader->OpenVTKFile();
>     reader->Update();
>
>     polydata = reader->GetPolyDataOutput();
>     points = polydata->GetPoints();
>     polygon = polydata->GetPolys();
> }
>
> Many thanks.
>
> Wenlng
>
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