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Pretranslated C# code > Preparing Delphi code > Delphi directives to support C++Builder > $EXTERNALSYM


The EXTERNALSYM directive prevents the specified Pascal symbol from appearing in C++ header files. This directive is used for types, which already are defined in the API of the operation system. For Delphi these types have to be redefined, for C++ not.


Delphi2C# doesn't output code parts, which are marked with the EXTERNALSYM directive if the according option is enabled.




{$EXTERNALSYM identifier}





  size_t : LongWord;

  {$EXTERNALSYM size_t}



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