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# xbelwriter.cpp Example File
xml/streambookmarks/xbelwriter.cpp

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     #include <QtGui>

     #include "xbelwriter.h"

     XbelWriter::XbelWriter(QTreeWidget *treeWidget)
         : treeWidget(treeWidget)
     {
         xml.setAutoFormatting(true);
     }

     bool XbelWriter::writeFile(QIODevice *device)
     {
         xml.setDevice(device);

         xml.writeStartDocument();
         xml.writeDTD("<!DOCTYPE xbel>");
         xml.writeStartElement("xbel");
         xml.writeAttribute("version", "1.0");
         for (int i = 0; i < treeWidget->topLevelItemCount(); ++i)
             writeItem(treeWidget->topLevelItem(i));

         xml.writeEndDocument();
         return true;
     }

     void XbelWriter::writeItem(QTreeWidgetItem *item)
     {
         QString tagName = item->data(0, Qt::UserRole).toString();
         if (tagName == "folder") {
             bool folded = !treeWidget->isItemExpanded(item);
             xml.writeStartElement(tagName);
             xml.writeAttribute("folded", folded ? "yes" : "no");
             xml.writeTextElement("title", item->text(0));
             for (int i = 0; i < item->childCount(); ++i)
                 writeItem(item->child(i));
             xml.writeEndElement();
         } else if (tagName == "bookmark") {
             xml.writeStartElement(tagName);
             if (!item->text(1).isEmpty())
                 xml.writeAttribute("href", item->text(1));
             xml.writeTextElement("title", item->text(0));
             xml.writeEndElement();
         } else if (tagName == "separator") {
             xml.writeEmptyElement(tagName);
         }
     }