[Insight-users] ITK_EXPORT

[Luis Ibanez]

Hi Sophie,

The ITK_EXPORT tag is only used for helping our testing
system identify which classes have (or not) correct
implementations of the PrintSelf() method.

The reason for the Tag, is to help a primitive Tcl code,
parse complex C++ code and identify where C++ classes
are defined.

Please, simply ignore this tag.


Note however, that other classes will have symbols such
as

      ITKCommon_EXPORT

This symbol is a macro that, when building on Windows,
with Shared libraries, gets replaced with the typical
__declspec pragmas that make some symbols of a shared
library to be visible for linking.

You will find the definition of this macro in the file

     Insight/Code/Common/itkWin32Header.h

in line 94-103:

#if (defined(_WIN32) || defined(WIN32)) && !defined(ITKSTATIC)
# ifdef ITKCommon_EXPORTS
#  define ITKCommon_EXPORT __declspec(dllexport)
# else
#  define ITKCommon_EXPORT __declspec(dllimport)
# endif  /* ITKCommon_EXPORT */
#else
/* unix needs nothing */
#define ITKCommon_EXPORT
#endif




    Regards,


        Luis


-----------------
Sophie Tao wrote:
> Hi,
> 
> I am little confused about the meaning of "ITK_EXPORT". Can someone give 
> me a detailed description for it?
> 
> Thanks a lot,
> 
> Sophie
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