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| ==Description== | | {{warning|1=The media wiki content on this page is no longer maintained. The examples presented on the https://itk.org/Wiki/* pages likely require ITK version 4.13 or earlier releases. In many cases, the examples on this page no longer conform to the best practices for modern ITK versions.}} |
| This example demonstrates how to throw an exception.
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| ==ITK Classes Demonstrated==
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| ==Exceptions.cxx==
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| <source lang="cpp">
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| #include "itkImage.h"
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| #include "itkImageFileReader.h"
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| #include "itkImageFileWriter.h"
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| #include "ImageSource.h"
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| int main(int, char*[])
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| {
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| // Setup types
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| typedef itk::Image<unsigned char, 2> ImageType;
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| ImageType::Pointer image = ImageType::New();
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|
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| // Create and the filter
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| typedef itk::ImageFilter<ImageType> FilterType;
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| FilterType::Pointer filter = FilterType::New();
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| filter->SetInput(image);
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| filter->Update();
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| return EXIT_SUCCESS;
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| }
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| </source>
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| ==ImageSource.h==
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| <source lang="cpp">
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| #ifndef __itkImageFilter_h
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| #define __itkImageFilter_h
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| #include "itkImageToImageFilter.h"
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| #include <set>
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| namespace itk
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| {
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| template< class TImage>
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| class ImageFilter:public ImageToImageFilter< TImage, TImage >
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| {
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| public:
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| /** Standard class typedefs. */
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| typedef ImageFilter Self;
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| typedef ImageToImageFilter< TImage, TImage > Superclass;
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| typedef SmartPointer< Self > Pointer;
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| /** Method for creation through the object factory. */
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| itkNewMacro(Self);
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| /** Run-time type information (and related methods). */
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| itkTypeMacro(ImageFilter, ImageToImageFilter); | |
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| protected:
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| ImageFilter(){}
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| ~ImageFilter(){}
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| /** Does the real work. */
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| virtual void GenerateData();
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| private:
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| ImageFilter(const Self &); //purposely not implemented
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| void operator=(const Self &); //purposely not implemented
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| };
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| } //namespace ITK
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| #ifndef ITK_MANUAL_INSTANTIATION
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| #include "ImageFilter.txx"
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| #endif
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| #endif // __itkImageFilter_h
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| </source>
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| ==ImageSource.txx==
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| <source lang="cpp">
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| #ifndef __itkImageSource_hxx
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| #define __itkImageSource_hxx
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| #include "ImageSource.h"
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| #include "itkObjectFactory.h"
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| #include "itkImageRegionIterator.h"
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| #include "itkImageRegionConstIterator.h"
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| namespace itk
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| {
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| template< class TImage>
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| void ImageFilter< TImage>
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| ::GenerateData()
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| {
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| double a = 2.1;
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| itkExceptionMacro ("Here is a variable: " << a << " and then more text.");
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| }
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| }// end namespace
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| #endif
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| </source>
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| {{ITKCMakeLists|{{SUBPAGENAME}}}}
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