[Insight-users] Simple file reader problem

[Luis Ibanez]

Hi Chris,

Since you are not using CMake, you are probaly forgetting
to enable the user of RTTI in your Visual C++ project.

Without RTTI enabled, the operations of dynamic_cast will fail.



    Regards,


       Luis


-------------------
Chris Farmer wrote:
> 
> Hi again.
> 
> I'm trying something which I think should be trivial, but I'm getting an
> error that I can't seem to track down.  I'm trying to read an image from
> a file using the ImageFileReader, then call Update() on the reader.  The
> code is analogous to that in the Image2.cxx example:
> 
> typedef unsigned char          PixelType;
> const unsigned int             Dimension = 2;
> typedef itk::Image< PixelType, Dimension >   ImageType;
> typedef itk::ImageFileReader< ImageType >  ReaderType;
> ReaderType::Pointer reader = ReaderType::New();
> reader->SetFileName( "c:\\burger.PNG" );
> reader->Update();
> 
> I added this code into an existing C++ project (Windows, VS.NET 2003)
> that we've had around for a while.  I didn't use cmake since it was an
> existing project.  I manually added the include file directories and
> library files to the project.  I also added the defines that are present
> in the Image2.vcproj file.  It builds fine.  This same code works
> happily in the Image2 example.
> 
> When I try to run this in my application, it enters the Update() code,
> then eventually goes down into ImageFileReader<TOutputImage,
> ConvertPixelTraits>
> ::EnlargeOutputRequestedRegion(DataObject *output) in
> itkimagefilereader.txx.  The first line in this method (line 257 in my
> ITK 2.2 build) does a cast of the "output" DataObject* into a
> TOutputImage::Pointer.  This cast fails in my application.  I'm having
> trouble figuring out how output is different in my app versus Image2.
> 
> Can anyone suggest where I could be screwing this up?
> 
> 
> Thanks,
> Chris
> 
> 
> 
> 
> 
> 
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