[vtkusers] vtkXMLDataElement::CharacterData

[shintaro akiyama]

Hello.

vtkXMLDataElement::CharacterData always have memoryblock.
However, some methods check whether ChacarterData is NULL.

Ex:
vtkXMLUtilities::FlattenElement
  const char *cdata = elem->GetCharacterData();
  int nb_nested = elem->GetNumberOfNestedElements();
  int need_close_tag = (nb_nested || cdata);
  if (!need_close_tag)
    {
    os << "/>";
    }
  else
    {
    os << '>'; // always executed.
    }

I want to have NULL ChacarterData, and output close tag.
How should I do?

--
Shintaro AKIYAMA