[Insight-users] casting from void* to itk::Image

[Navneeth Subramanian]

Hi,

I am trying to cast some user data (void*) into an itk image as in the code
below:

~~~~~~~~~~~~~~~
#include "itkImage.h"

typedef itk::Image<unsigned char, 2>  ImageType;

void myFunction(void* userData)
{
  ImageType::Pointer myImage = reinterpret_cast< ImageType::Pointer
>(userData);
}

int main(int argc, char *argv[])
{
  typedef itk::ImageFileReader<ImageType> ReaderType;

  ReaderType::Pointer reader = ReaderType::New();
  reader->SetFileName(argv[1]);

  reader->Update();
  ImageType::Pointer image = reader->GetOutput();

  myFunction( image );

  return EXIT_SUCCESS;
}

~~~~~~~~~~~~~~~~~~
However i keep running into this compile error:

1>d:\dev\src\ : error C2440: 'reinterpret_cast' : cannot convert from 'void
*' to 'itk::SmartPointer<TObjectType>'
1>        with
1>        [
1>            TObjectType=itk::Image<unsigned char,2>
1>        ]
1>        Conversion requires a constructor or user-defined-conversion
operator, which can't be used by const_cast or reinterpret_cast

Any idea what I am doing wrong ?

many thanks,
navneeth
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