I need to change some element attributes of a xml file. I've been trying to achieve this using QXmlStreamWriter class, but it does not work fine, because when I call the function, all elements are deleted of the xml file, except the changed attribute.
For example, I want to change the width of a rectangle, in a SVG file, keeping the other elements and attributes intact.
Here is my code:

Qt Code: 
  1. void Editor::changeElementAttribute(int pos, QVariant newData)
  2. {
  3.     DomItem *item = static_cast<DomItem*>(treeView->currentIndex().internalPointer());
  4.     QDomNode node = item->node();
  5.     QDomNamedNodeMap attributeMap = node.attributes();
  6.  
  7.     file.setFileName(currentPath);
  8.  
  9.     if (!file.open(QFile::WriteOnly | QFile::Text))
  10.     {
  11.         QMessageBox::warning(new QWidget(), tr("SVG Editor"),
  12.                              tr("Cannot write file %1:\n%2.").arg(currentPath)
  13.                              .arg(file.errorString()));
  14.         return;
  15.     }
  16.  
  17.     stream.setDevice(&file);
  18.     stream.writeStartElement(node.nodeName());  //tagname
  19.     stream.writeAttribute(attributeMap.item(pos).nodeName(), newData.toString());  //attribute and value
  20.     stream.writeEndElement();
  21. }
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Any help is welcome.
Thanks in advanced!