+ /// Pointer to a user supplied function to allow modification of pixel order
+ /// (i.e. : Mirror, TopDown, 90°Rotation, ...)
+ /// use as : void userSuppliedFunction(uint8_t *im, gdcm::File *f)
+ /// NB : the "uint8_t *" type of first param is just for prototyping.
+ /// User will Cast it according what he founds with f->GetPixelType()
+ /// See vtkgdcmSerieViewer for an example
+ VOID_FUNCTION_PUINT8_PFILE_POINTER UserFunction;