Sirs
I am having a problem displaying a Qlist of QTreeWidgetItems in a QTreeWidget.
Code follows:-

domparser.h
Qt Code: 
  1. #ifndef DOMPARSER_H
  2. #define DOMPARSER_H
  3.  
  4. #include <QTreeWidget>
  5. #include <QtXml/QDomElement>
  6. #include <QTreeWidgetItem>
  7. #include <QMessageBox>
  8. #include <utilities.h>
  9. #include <utils.h>
  10.  
  11. class domParser
  12. {
  13. public:
  14.     domParser(QIODevice *device, QStringList nodeList, QStringList attrbList);
  15.     QList<QTreeWidgetItem *> items;
  16.  
  17. private:
  18.     QStringList listOfNodes, listOfAttrbs;
  19. };
  20.  
  21. #endif // DOMPARSER_H
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domparser.cpp
Qt Code: 
  1. #include "domparser.h"
  2.  
  3. domParser::domParser(QIODevice *device, QStringList nodeList, QStringList attrbList)
  4. {
  5.     listOfNodes = nodeList;
  6.     listOfAttrbs = attrbList;
  7.     int column = 0;
  9.  
  10.     QString errorStr, nodeName;
  11.     int errorLine;
  12.     int errorColumn;
  14.  
  15.     if (!doc.setContent(device, true, &errorStr, &errorLine,
  16.                         &errorColumn)) {
  17.         QMessageBox::warning(0, QObject::tr("DOM Parser"),
  18.                              QObject::tr("Parse error at line %1, "
  19.                                          "column %2:\n%3")
  20.                              .arg(errorLine)
  21.                              .arg(errorColumn)
  22.                              .arg(errorStr));
  23.         return;
  24.     }
  25.  
  26.     QDomElement root = doc.documentElement();
  27.     if (root.tagName() != listOfNodes.at(0))
  28.         return;
  29.     QDomNode node = root.firstChild();
  30.  
  31.     while (!node.isNull())
  32.     {
  33.         nodeName = node.toElement().tagName();
  34.         QDomElement elem = node.toElement();
  35.         if(listOfNodes.contains(nodeName))
  36.         {
  37.             foreach(QString att, listOfAttrbs)
  38.             {
  39.                 if(elem.hasAttribute(att))
  40.                 {
  41.                     nodeName.append(elem.attribute(att,"not set"));
  42.                     item->setText(column, nodeName);
  43. dbug<<item->text(column)                ;
  44.                     items << item;
  45.                     column++;
  46.                     item->setText(column, trim(elem.text()));
  47. dbug<<item->text(column)                    ;
  48.                     items << item;
  49.                     column--;
  50.                 }
  51.                 else
  52.                 {
  53.                     item->setText(column, nodeName);
  54. dbug<<item->text(column)                    ;
  55.                     items << item;
  56.                     column++;
  57.                     item->setText(column, trim(elem.text()));
  58. dbug<<item->text(column)                    ;
  59.                     items << item;
  60.                     column--;
  61.                 }
  62.             }
  63.         }
  64.         node = node.nextSibling();
  65.     }
  66. }
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Code for testing purposes:-
mainwindow.h
Qt Code: 
  1. #ifndef MAINWINDOW_H
  2. #define MAINWINDOW_H
  3.  
  4. #include <QMainWindow>
  5.  
  6. #include "domparser.h"
  7. #include <utilities.h>
  8. #include <utils.h>
  9.  
  10. const QStringList nodeList = QStringList()
  11.         << "cdData" << "disc_id" << "title" << "artist"
  12.         << "year" << "category" << "playlength"
  13.         << "noftracks" << "tracktitle" << "tracklength";
  14. const QStringList attrbList = QStringList()
  15.         << "no";
  16.  
  17. namespace Ui {
  18. class MainWindow;
  19. }
  20.  
  21. class MainWindow : public QMainWindow
  22. {
  23.     Q_OBJECT
  24.  
  25. public:
  26.     explicit MainWindow(QWidget *parent = 0);
  27.     ~MainWindow();
  28.  
  29.     void parseFile(const QString &fileName);
  30.  
  31.  
  32.  
  33. private:
  34.     Ui::MainWindow *ui;
  35.  
  36.     void setup();
  37.  
  38.     QHash<QString, QString> hash;
  39.     QList<QTreeWidgetItem *> items;
  41.  
  42.  
  43.  
  44. private slots:
  45.     void action(void);
  46. };
  47.  
  48. #endif // MAINWINDOW_H
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mainwindow.cpp
Qt Code: 
  1. #include "mainwindow.h"
  2. #include "ui_mainwindow.h"
  3.  
  4. MainWindow::MainWindow(QWidget *parent) :
  5.     QMainWindow(parent),
  6.     ui(new Ui::MainWindow)
  7. {
  8.     ui->setupUi(this);
  9.     setup();
  10. }
  11.  
  12. MainWindow::~MainWindow()
  13. {
  14.     delete ui;
  15. }
  16.  
  17. void MainWindow::parseFile(const QString &fileName)
  18. {
  19.     QFile file(fileName);
  20.     int row = 0, colm = 0;
  21.  
  22.     domParser parser(&file, nodeList, attrbList);
  23.     for(int i = 0 ; i < parser.items.count() ; ++i)
  24.     {
  26.         item = parser.items.at(i);
  27.         colm = i % 2;
  28. dbug<<item->text(colm); //// This is always the last item in the list!!!
  29.         ui->treeWidget->setCurrentItem(item, colm); /// Display is empty
  30.     }
  31. }
  32.  
  33. void MainWindow::setup()
  34. {
  35.     QStringList headers;
  36.  
  37.     headers << "List of data" << "Values";
  38.     connect(ui->btn_quit,   SIGNAL(clicked()), this, SLOT(close()));
  39.     connect(ui->btn_action, SIGNAL(clicked()), this, SLOT(action()));
  40.  
  41.     ui->treeWidget->setHeaderLabels(headers);
  42. }
  43.  
  44. void MainWindow::action()
  45. {
  46.     QString xmlFile = "/tmp/cddb.xml";
  47.     QFile file(xmlFile);
  48.     if(!file.exists())
  49.     {
  50.         infoWarnError(CRITICAL, nice("File action",Black),nice(QString("%1 NOT FOUND!").arg(xmlFile),Red));
  51.         return;
  52.     }
  53.     parseFile(xmlFile);
  54. }
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main.cpp
Qt Code: 
  1. #include "mainwindow.h"
  2. #include <QApplication>
  3. #include <QtWidgets>
  4.  
  5. int main(int argc, char *argv[])
  6. {
  7.     QApplication a(argc, argv);
  8.     MainWindow w;
  9.     QRect r = w.geometry();
  10.     r.moveCenter(QDesktopWidget().availableGeometry().center());
  11.     w.setGeometry(r);
  12.     w.show();
  13.  
  14.     return a.exec();
  15. }
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This is the xml file I'm reading:-
Qt Code: 
  1. <?xml version="1.0" encoding="UTF-8"?>
  2. <cdData>
  3.  <disc_id>
  4.   6411d008
  5.  </disc_id>
  6.  <title>
  7.   Brahms
  8.  </title>
  9. <artist>
  10.  Symphony No. I
  11. </artist>
  12.  <year>
  13.   2000
  14.  </year>
  15.  <category>
  16.   Classical
  17.  </category>
  18.  <playlength>
  19.   76:00
  20.  </playlength>
  21.  <noftracks>
  22.   8
  23.  </noftracks>
  24.  <tracktitle no="01">
  25.   Symphony No1. Op.68 Un poco sostenuto
  26.  </tracktitle>
  27.  <tracklength no="01">
  28.   02:59
  29.  </tracklength>
  30.  <tracktitle no="02">
  31.   Symphony No1. Op.68 Allegro
  32.  </tracktitle>
  33.  <tracklength no="02">
  34.   10:50
  35.  </tracklength>
  36.  <tracktitle no="03">
  37.   Symphony No1. Op.68 Andante sostenuto
  38.  </tracktitle>
  39.  <tracklength no="03">
  40.   08:59
  41.  </tracklength>
  42.  <tracktitle no="04">
  43.   Symphony No1. Op.68 Un poco Allegretto  e grazioso
  44.  </tracktitle>
  45.  <tracklength no="04">
  46.   04:48
  47.  </tracklength>
  48.  <tracktitle no="05">
  49.   Symphony No1. Op.68 Adagio-Piu andante
  50.  </tracktitle>
  51.  <tracklength no="05">
  52.   04:33
  53.  </tracklength>
  54.  <tracktitle no="06">
  55.   Symphony No1. Op.68 Allegro non troppo, ma con brio
  56.  </tracktitle>
  57.  <tracklength no="06">
  58.   12:26
  59.  </tracklength>
  60.  <tracktitle no="07">
  61.   Variations on a Theme by Haydn, Op56a
  62.  </tracktitle>
  63.  <tracklength no="07">
  64.   18:43
  65.  </tracklength>
  66.  <tracktitle no="08">
  67.   TragicOverture, Op.81
  68.  </tracktitle>
  69.  <tracklength no="08">
  70.   12:37
  71.  </tracklength>
  72. </cdData>
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This is the output:-
[ domParser ; 54 ] "disc_id"
[ domParser ; 58 ] "6411d008"
[ domParser ; 54 ] "title"
[ domParser ; 58 ] "Brahms"
[ domParser ; 54 ] "artist"
[ domParser ; 58 ] "Symphony No. I"
[ domParser ; 54 ] "year"
[ domParser ; 58 ] "2000"
[ domParser ; 54 ] "category"
[ domParser ; 58 ] "Classical"
[ domParser ; 54 ] "playlength"
[ domParser ; 58 ] "76:00"
[ domParser ; 54 ] "noftracks"
[ domParser ; 58 ] "8"
[ domParser ; 43 ] "tracktitle01"
[ domParser ; 47 ] "Symphony No1. Op.68 Un poco sostenuto"
[ domParser ; 43 ] "tracklength01"
[ domParser ; 47 ] "02:59"
[ domParser ; 43 ] "tracktitle02"
[ domParser ; 47 ] "Symphony No1. Op.68 Allegro"
[ domParser ; 43 ] "tracklength02"
[ domParser ; 47 ] "10:50"
[ domParser ; 43 ] "tracktitle03"
[ domParser ; 47 ] "Symphony No1. Op.68 Andante sostenuto"
[ domParser ; 43 ] "tracklength03"
[ domParser ; 47 ] "08:59"
[ domParser ; 43 ] "tracktitle04"
[ domParser ; 47 ] "Symphony No1. Op.68 Un poco Allegretto e grazioso"
[ domParser ; 43 ] "tracklength04"
[ domParser ; 47 ] "04:48"
[ domParser ; 43 ] "tracktitle05"
[ domParser ; 47 ] "Symphony No1. Op.68 Adagio-Piu andante"
[ domParser ; 43 ] "tracklength05"
[ domParser ; 47 ] "04:33"
[ domParser ; 43 ] "tracktitle06"
[ domParser ; 47 ] "Symphony No1. Op.68 Allegro non troppo, ma con brio"
[ domParser ; 43 ] "tracklength06"
[ domParser ; 47 ] "12:26"
[ domParser ; 43 ] "tracktitle07"
[ domParser ; 47 ] "Variations on a Theme by Haydn, Op56a"
[ domParser ; 43 ] "tracklength07"
[ domParser ; 47 ] "18:43"
[ domParser ; 43 ] "tracktitle08"
[ domParser ; 47 ] "TragicOverture, Op.81"
[ domParser ; 43 ] "tracklength08"
[ domParser ; 47 ] "12:37"
[ parseFile ; 28 ] "tracklength08"
[ parseFile ; 28 ] "12:37"
[ parseFile ; 28 ] "tracklength08"
[ parseFile ; 28 ] "12:37"
[ parseFile ; 28 ] "tracklength08"
[ parseFile ; 28 ] "12:37"
[ parseFile ; 28 ] "tracklength08"
[ parseFile ; 28 ] "12:37"
[ parseFile ; 28 ] "tracklength08"
[ parseFile ; 28 ] "12:37"
[ parseFile ; 28 ] "tracklength08"
[ parseFile ; 28 ] "12:37"
[ parseFile ; 28 ] "tracklength08"
[ parseFile ; 28 ] "12:37"
[ parseFile ; 28 ] "tracklength08"
[ parseFile ; 28 ] "12:37"
[ parseFile ; 28 ] "tracklength08"
[ parseFile ; 28 ] "12:37"
[ parseFile ; 28 ] "tracklength08"
[ parseFile ; 28 ] "12:37"
[ parseFile ; 28 ] "tracklength08"
[ parseFile ; 28 ] "12:37"
[ parseFile ; 28 ] "tracklength08"
[ parseFile ; 28 ] "12:37"
[ parseFile ; 28 ] "tracklength08"
[ parseFile ; 28 ] "12:37"
[ parseFile ; 28 ] "tracklength08"
[ parseFile ; 28 ] "12:37"
[ parseFile ; 28 ] "tracklength08"
[ parseFile ; 28 ] "12:37"
[ parseFile ; 28 ] "tracklength08"
[ parseFile ; 28 ] "12:37" etc....
I appreciate any help, thank you
Graham