How can one write newline characters between TiXmLText elements in a Tiny XML DOM Object using Visual Studio 2008 C++?

I am using TinyXML library in my project to produce a Xml file. (C++ Visual Studio 2008).
I want to write each name in one line but all of them between a couple tags. I would like the output format below:
   <?xml version="1.0"?>
    <opencv_storage>
    <images>
    ./images/cam01.jpg
    ./images/cam02.jpg
    ./images/cam03.jpg
    ./images/cam04.jpg
    ./images/cam05.jpg
    ./images/cam06.jpg
    ./images/cam07.jpg
    ./images/cam08.jpg
    ./images/cam09.jpg
    ./images/cam10.jpg
    ./images/cam11.jpg
    ./images/cam12.jpg
    ./images/cam13.jpg
    ./images/cam14.jpg
    </images>
    </opencv_storage>
but I dont know How can I write the new line between them . by my code here:
  TiXmlDocument document;
  TiXmlElement* msg;
  TiXmlDeclaration* dec1 = new TiXmlDeclaration("1.0","","");
  document.LinkEndChild(dec1);

  TiXmlElement * root = new TiXmlElement( "opencv_storage" );  
  document.LinkEndChild( root );
  msg = new TiXmlElement("images");

  openFileDialog1->Title = "Select an Image file";

 if (openFileDialog1->ShowDialog() == System::Windows::Forms::DialogResult::OK)

  {
     for each (String^ file in openFileDialog1->SafeFileNames)
         {
         std::stringstream v;
         v << openFileDialog1->FileName;
         TiXmlText* txt = new TiXmlText(v.str());
         msg->LinkEndChild(txt);
         }
              root->LinkEndChild(msg);


          document.SaveFile("VID5.xml");

     }
by this Code I produce such file :
 <?xml version="1.0" ?>
    <opencv_storage>
    <images>C:\Users\Public\Pictures\Sample Pictures\Chrysanthemum.jpgC:\Users\Public  \Pictures\Sample Pictures\Chrysanthemum.jpg
    </images>
    </opencv_storage>
How Can I write a newline character between these names ?
Any help is greatly appreciated.