[vtkusers] Sphere example

[Ipaq hp]

Hi again, when i try to compile the first example that is in 
http://www.vtk.org/example-code.php,the one with the sphere (i just did a 
copy/paste), it gives me this errors:

G:\Archivos de programa\Microsoft Visual 
Studio\MyProjects\VTKprojects\ejemplo1vtk.cpp(24) : error C2027: use of 
undefined type 'vtkProperty'
        g:\documents and 
settings\administrador\escritorio\vtk\include\vtk\vtkactor.h(42) : see 
declaration of 'vtkProperty'
G:\Archivos de programa\Microsoft Visual 
Studio\MyProjects\VTKprojects\ejemplo1vtk.cpp(24) : error C2227: left of 
'->SetColor' must point to class/struct/union
Error executing cl.exe.

Sphere example:

#include "vtkSphereSource.h"
#include "vtkPolyDataMapper.h"
#include "vtkActor.h"
#include "vtkRenderWindow.h"
#include "vtkRenderer.h"
#include "vtkRenderWindowInteractor.h"

void main ()
{

  // create sphere geometry
  vtkSphereSource *sphere = vtkSphereSource::New();
  sphere->SetRadius(1.0);
  sphere->SetThetaResolution(18);
  sphere->SetPhiResolution(18);

  // map to graphics library
  vtkPolyDataMapper *map = vtkPolyDataMapper::New();
  map->SetInput(sphere->GetOutput());

  // actor coordinates geometry, properties, transformation
  vtkActor *aSphere = vtkActor::New();
  aSphere->SetMapper(map);
  aSphere->GetProperty()->SetColor(0,0,1); // ****Problem line*******

  // a renderer and render window
  vtkRenderer *ren1 = vtkRenderer::New();
  vtkRenderWindow *renWin = vtkRenderWindow::New();
  renWin->AddRenderer(ren1);

  // an interactor
  vtkRenderWindowInteractor *iren = vtkRenderWindowInteractor::New();
  iren->SetRenderWindow(renWin);

  // add the actor to the scene
  ren1->AddActor(aSphere);
  ren1->SetBackground(1,1,1); // Background color white

  // render an image (lights and cameras are created automatically)
  renWin->Render();

  // begin mouse interaction
  iren->Start();
}


But when i compile the other example,(the cuadratic function that is in 
http://www.vtk.org/example-code.php, the second example) , doesnt give me 
any error, and it seems to me, that it does the same procedure to draw a 
cube, i dont see the difference between the lines where they set the color 
to de actors.


Thanks.

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