Discussion :

[GoldenEyes]

salut,
je suis entrain de faire un code qui fait l'extraction des lien via la manipulation de dom avec QDocument et Qwebkit est voila ume portion de mon programme ou j'ai l'erreur suivante :

mainwindow.cpp:193: erreur: «cout" was not declared in this scope

voila le code :

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    QDomNode n = docElem.firstChild();
    while(!n.isNull()) {
         QDomElement e = n.toElement(); // try to convert the node to an element.
         if(!e.isNull()) {
 
          cout << e.tagName() << endl; // the node really is an element.
         }
         n = n.nextSibling();
     }

merci pour tout aide ;;
bon developpement;;

[Alp]

Tu as inclu l'en-tête standard <iostream> ainsi que placé un :

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using std::cout;

ou un :

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using namespace std;

?

[GoldenEyes]

Tu as inclu l'en-tête standard <iostream> ainsi que placé un :

Code :

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using std::cout;

ou un :

Code :

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using namespace std;

?

salut,
j'ai ajouter using namespace std; et
#include <iostream> voila la grande liste qui s'affiche :
g++ -c -pipe -O2 -Wall -W -D_REENTRANT -DQT_NO_DEBUG -DQT_WEBKIT_LIB -DQT_XML_LIB -DQT_GUI_LIB -DQT_CORE_LIB -DQT_SHARED -I/usr/local/Trolltech/Qt-4.4.0-rc1/mkspecs/linux-g++ -I. -I/usr/local/Trolltech/Qt-4.4.0-rc1/include/QtCore -I/usr/local/Trolltech/Qt-4.4.0-rc1/include/QtCore -I/usr/local/Trolltech/Qt-4.4.0-rc1/include/QtGui -I/usr/local/Trolltech/Qt-4.4.0-rc1/include/QtGui -I/usr/local/Trolltech/Qt-4.4.0-rc1/include/QtXml -I/usr/local/Trolltech/Qt-4.4.0-rc1/include/QtXml -I/usr/local/Trolltech/Qt-4.4.0-rc1/include/QtWebKit -I/usr/local/Trolltech/Qt-4.4.0-rc1/include/QtWebKit -I/usr/local/Trolltech/Qt-4.4.0-rc1/include -I. -I. -I. -o mainwindow.o mainwindow.cpp
mainwindow.cpp: In member function «int MainWindow::setStartupText()":
mainwindow.cpp:188: erreur: no match for «operator<<" in «std::cout << QDomElement::tagName() const()"
/usr/include/c++/4.1.3/bits/ostream.tcc:67: note: candidats sont: std::basic_ostream<_CharT, _Traits>& std::basic_ostream<_CharT, _Traits>::operator<<(std::basic_ostream<_CharT, _Traits>& (*)(std::basic_ostream<_CharT, _Traits>&)) [with _CharT = char, _Traits = std::char_traits<char>]
/usr/include/c++/4.1.3/bits/ostream.tcc:78: note: std::basic_ostream<_CharT, _Traits>& std::basic_ostream<_CharT, _Traits>::operator<<(std::basic_ios<_CharT, _Traits>& (*)(std::basic_ios<_CharT, _Traits>&)) [with _CharT = char, _Traits = std::char_traits<char>]
/usr/include/c++/4.1.3/bits/ostream.tcc:90: note: std::basic_ostream<_CharT, _Traits>& std::basic_ostream<_CharT, _Traits>::operator<<(std::ios_base& (*)(std::ios_base&)) [with _CharT = char, _Traits = std::char_traits<char>]
/usr/include/c++/4.1.3/bits/ostream.tcc:241: note: std::basic_ostream<_CharT, _Traits>& std::basic_ostream<_CharT, _Traits>::operator<<(long int) [with _CharT = char, _Traits = std::char_traits<char>]
/usr/include/c++/4.1.3/bits/ostream.tcc:264: note: std::basic_ostream<_CharT, _Traits>& std::basic_ostream<_CharT, _Traits>::operator<<(long unsigned int) [with _CharT = char, _Traits = std::char_traits<char>]
/usr/include/c++/4.1.3/bits/ostream.tcc:102: note: std::basic_ostream<_CharT, _Traits>& std::basic_ostream<_CharT, _Traits>::operator<<(bool) [with _CharT = char, _Traits = std::char_traits<char>]
/usr/include/c++/4.1.3/bits/ostream.tcc:125: note: std::basic_ostream<_CharT, _Traits>& std::basic_ostream<_CharT, _Traits>::operator<<(short int) [with _CharT = char, _Traits = std::char_traits<char>]
/usr/include/c++/4.1.3/bits/ostream.tcc:157: note: std::basic_ostream<_CharT, _Traits>& std::basic_ostream<_CharT, _Traits>::operator<<(short unsigned int) [with _CharT = char, _Traits = std::char_traits<char>]
/usr/include/c++/4.1.3/bits/ostream.tcc:183: note: std::basic_ostream<_CharT, _Traits>& std::basic_ostream<_CharT, _Traits>::operator<<(int) [with _CharT = char, _Traits = std::char_traits<char>]
/usr/include/c++/4.1.3/bits/ostream.tcc:215: note: std::basic_ostream<_CharT, _Traits>& std::basic_ostream<_CharT, _Traits>::operator<<(unsigned int) [with _CharT = char, _Traits = std::char_traits<char>]
/usr/include/c++/4.1.3/bits/ostream.tcc:288: note: std::basic_ostream<_CharT, _Traits>& std::basic_ostream<_CharT, _Traits>::operator<<(long long int) [with _CharT = char, _Traits = std::char_traits<char>]
/usr/include/c++/4.1.3/bits/ostream.tcc:311: note: std::basic_ostream<_CharT, _Traits>& std::basic_ostream<_CharT, _Traits>::operator<<(long long unsigned int) [with _CharT = char, _Traits = std::char_traits<char>]
/usr/include/c++/4.1.3/bits/ostream.tcc:361: note: std::basic_ostream<_CharT, _Traits>& std::basic_ostream<_CharT, _Traits>::operator<<(double) [with _CharT = char, _Traits = std::char_traits<char>]
/usr/include/c++/4.1.3/bits/ostream.tcc:335: note: std::basic_ostream<_CharT, _Traits>& std::basic_ostream<_CharT, _Traits>::operator<<(float) [with _CharT = char, _Traits = std::char_traits<char>]
/usr/include/c++/4.1.3/bits/ostream.tcc:384: note: std::basic_ostream<_CharT, _Traits>& std::basic_ostream<_CharT, _Traits>::operator<<(long double) [with _CharT = char, _Traits = std::char_traits<char>]
/usr/include/c++/4.1.3/bits/ostream.tcc:407: note: std::basic_ostream<_CharT, _Traits>& std::basic_ostream<_CharT, _Traits>::operator<<(const void*) [with _CharT = char, _Traits = std::char_traits<char>]
/usr/include/c++/4.1.3/bits/ostream.tcc:430: note: std::basic_ostream<_CharT, _Traits>& std::basic_ostream<_CharT, _Traits>::operator<<(std::basic_streambuf<_CharT, _Traits>*) [with _CharT = char, _Traits = std::char_traits<char>]
/usr/local/Trolltech/Qt-4.4.0-rc1/include/QtCore/qchar.h:391: note: QDataStream& operator<<(QDataStream&, const QChar&)
/usr/local/Trolltech/Qt-4.4.0-rc1/include/QtCore/qbytearray.h:570: note: QDataStream& operator<<(QDataStream&, const QByteArray&)
/usr/local/Trolltech/Qt-4.4.0-rc1/include/QtCore/qstring.h:1027: note: QDataStream& operator<<(QDataStream&, const QString&)
/usr/local/Trolltech/Qt-4.4.0-rc1/include/QtCore/qobject.h:460: note: QDebug operator<<(QDebug, const QObject*)
/usr/local/Trolltech/Qt-4.4.0-rc1/include/QtCore/qiodevice.h:247: note: QDebug operator<<(QDebug, QFlags<QIODevice::OpenModeFlag>)
/usr/local/Trolltech/Qt-4.4.0-rc1/include/QtCore/qregexp.h:143: note: QDataStream& operator<<(QDataStream&, const QRegExp&)
/usr/local/Trolltech/Qt-4.4.0-rc1/include/QtCore/qstringlist.h:230: note: QDataStream& operator<<(QDataStream&, const QStringList&)
/usr/local/Trolltech/Qt-4.4.0-rc1/include/QtCore/qtextstream.h:287: note: QTextStream& operator<<(QTextStream&, QTextStream& (*)(QTextStream&))
/usr/local/Trolltech/Qt-4.4.0-rc1/include/QtCore/qtextstream.h:290: note: QTextStream& operator<<(QTextStream&, QTextStreamManipulator)
/usr/local/Trolltech/Qt-4.4.0-rc1/include/QtCore/qdir.h:258: note: QDebug operator<<(QDebug, QFlags<QDir::Filter>)
/usr/local/Trolltech/Qt-4.4.0-rc1/include/QtCore/qdir.h:259: note: QDebug operator<<(QDebug, const QDir&)
/usr/local/Trolltech/Qt-4.4.0-rc1/include/QtCore/qlocale.h:654: note: QDataStream& operator<<(QDataStream&, const QLocale&)
/usr/local/Trolltech/Qt-4.4.0-rc1/include/QtCore/qvariant.h:589: note: QDebug operator<<(QDebug, const QVariant&)
/usr/local/Trolltech/Qt-4.4.0-rc1/include/QtCore/qvariant.h:495: note: QDataStream& operator<<(QDataStream&, const QVariant&)
/usr/local/Trolltech/Qt-4.4.0-rc1/include/QtCore/qvariant.h:497: note: QDataStream& operator<<(QDataStream&, QVariant::Type)
/usr/local/Trolltech/Qt-4.4.0-rc1/include/QtCore/qvariant.h:590: note: QDebug operator<<(QDebug, QVariant::Type)
/usr/local/Trolltech/Qt-4.4.0-rc1/include/QtCore/qurl.h:271: note: QDataStream& operator<<(QDataStream&, const QUrl&)
/usr/local/Trolltech/Qt-4.4.0-rc1/include/QtCore/qurl.h:276: note: QDebug operator<<(QDebug, const QUrl&)
/usr/local/Trolltech/Qt-4.4.0-rc1/include/QtCore/qabstractitemmodel.h:103: note: QDebug operator<<(QDebug, const QModelIndex&)
/usr/local/Trolltech/Qt-4.4.0-rc1/include/QtCore/qabstractitemmodel.h:144: note: QDebug operator<<(QDebug, const QPersistentModelIndex&)
/usr/local/Trolltech/Qt-4.4.0-rc1/include/QtCore/quuid.h:184: note: QDataStream& operator<<(QDataStream&, const QUuid&)
/usr/local/Trolltech/Qt-4.4.0-rc1/include/QtCore/qbitarray.h:165: note: QDataStream& operator<<(QDataStream&, const QBitArray&)
/usr/local/Trolltech/Qt-4.4.0-rc1/include/QtCore/qdatetime.h:305: note: QDataStream& operator<<(QDataStream&, const QDate&)
/usr/local/Trolltech/Qt-4.4.0-rc1/include/QtCore/qdatetime.h:307: note: QDataStream& operator<<(QDataStream&, const QTime&)
/usr/local/Trolltech/Qt-4.4.0-rc1/include/QtCore/qdatetime.h:309: note: QDataStream& operator<<(QDataStream&, const QDateTime&)
/usr/local/Trolltech/Qt-4.4.0-rc1/include/QtCore/qdatetime.h:314: note: QDebug operator<<(QDebug, const QDate&)
/usr/local/Trolltech/Qt-4.4.0-rc1/include/QtCore/qdatetime.h:315: note: QDebug operator<<(QDebug, const QTime&)
/usr/local/Trolltech/Qt-4.4.0-rc1/include/QtCore/qdatetime.h:316: note: QDebug operator<<(QDebug, const QDateTime&)
/usr/local/Trolltech/Qt-4.4.0-rc1/include/QtCore/qpoint.h:104: note: QDataStream& operator<<(QDataStream&, const QPoint&)
/usr/local/Trolltech/Qt-4.4.0-rc1/include/QtCore/qpoint.h:184: note: QDebug operator<<(QDebug, const QPoint&)
/usr/local/Trolltech/Qt-4.4.0-rc1/include/QtCore/qpoint.h:238: note: QDataStream& operator<<(QDataStream&, const QPointF&)
/usr/local/Trolltech/Qt-4.4.0-rc1/include/QtCore/qpoint.h:359: note: QDebug operator<<(QDebug, const QPointF&)
/usr/local/Trolltech/Qt-4.4.0-rc1/include/QtCore/qline.h:203: note: QDebug operator<<(QDebug, const QLine&)
/usr/local/Trolltech/Qt-4.4.0-rc1/include/QtCore/qline.h:207: note: QDataStream& operator<<(QDataStream&, const QLine&)
/usr/local/Trolltech/Qt-4.4.0-rc1/include/QtCore/qline.h:414: note: QDebug operator<<(QDebug, const QLineF&)
/usr/local/Trolltech/Qt-4.4.0-rc1/include/QtCore/qline.h:418: note: QDataStream& operator<<(QDataStream&, const QLineF&)
/usr/local/Trolltech/Qt-4.4.0-rc1/include/QtCore/qsize.h:103: note: QDataStream& operator<<(QDataStream&, const QSize&)
/usr/local/Trolltech/Qt-4.4.0-rc1/include/QtCore/qsize.h:198: note: QDebug operator<<(QDebug, const QSize&)
/usr/local/Trolltech/Qt-4.4.0-rc1/include/QtCore/qsize.h:254: note: QDataStream& operator<<(QDataStream&, const QSizeF&)
/usr/local/Trolltech/Qt-4.4.0-rc1/include/QtCore/qsize.h:359: note: QDebug operator<<(QDebug, const QSizeF&)
/usr/local/Trolltech/Qt-4.4.0-rc1/include/QtCore/qrect.h:200: note: QDataStream& operator<<(QDataStream&, const QRect&)
/usr/local/Trolltech/Qt-4.4.0-rc1/include/QtCore/qrect.h:508: note: QDebug operator<<(QDebug, const QRect&)
/usr/local/Trolltech/Qt-4.4.0-rc1/include/QtCore/qrect.h:622: note: QDataStream& operator<<(QDataStream&, const QRectF&)
/usr/local/Trolltech/Qt-4.4.0-rc1/include/QtCore/qrect.h:852: note: QDebug operator<<(QDebug, const QRectF&)
/usr/local/Trolltech/Qt-4.4.0-rc1/include/QtGui/qcolor.h:62: note: QDebug operator<<(QDebug, const QColor&)
/usr/local/Trolltech/Qt-4.4.0-rc1/include/QtGui/qcolor.h:243: note: QDataStream& operator<<(QDataStream&, const QColor&)
/usr/local/Trolltech/Qt-4.4.0-rc1/include/QtGui/qregion.h:202: note: QDataStream& operator<<(QDataStream&, const QRegion&)
/usr/local/Trolltech/Qt-4.4.0-rc1/include/QtGui/qregion.h:207: note: QDebug operator<<(QDebug, const QRegion&)
/usr/local/Trolltech/Qt-4.4.0-rc1/include/QtGui/qkeysequence.h:198: note: QDataStream& operator<<(QDataStream&, const QKeySequence&)
/usr/local/Trolltech/Qt-4.4.0-rc1/include/QtGui/qkeysequence.h:212: note: QDebug operator<<(QDebug, const QKeySequence&)
/usr/local/Trolltech/Qt-4.4.0-rc1/include/QtGui/qevent.h:714: note: QDebug operator<<(QDebug, const QEvent*)
/usr/local/Trolltech/Qt-4.4.0-rc1/include/QtGui/qpolygon.h:98: note: QDebug operator<<(QDebug, const QPolygon&)
/usr/local/Trolltech/Qt-4.4.0-rc1/include/QtGui/qpolygon.h:105: note: QDataStream& operator<<(QDataStream&, const QPolygon&)
/usr/local/Trolltech/Qt-4.4.0-rc1/include/QtGui/qpolygon.h:157: note: QDebug operator<<(QDebug, const QPolygonF&)
/usr/local/Trolltech/Qt-4.4.0-rc1/include/QtGui/qpolygon.h:164: note: QDataStream& operator<<(QDataStream&, const QPolygonF&)
/usr/local/Trolltech/Qt-4.4.0-rc1/include/QtGui/qmatrix.h:160: note: QDataStream& operator<<(QDataStream&, const QMatrix&)
/usr/local/Trolltech/Qt-4.4.0-rc1/include/QtGui/qmatrix.h:164: note: QDebug operator<<(QDebug, const QMatrix&)
/usr/local/Trolltech/Qt-4.4.0-rc1/include/QtGui/qpainterpath.h:234: note: QDataStream& operator<<(QDataStream&, const QPainterPath&)
/usr/local/Trolltech/Qt-4.4.0-rc1/include/QtGui/qpainterpath.h:392: note: QDebug operator<<(QDebug, const QPainterPath&)
/usr/local/Trolltech/Qt-4.4.0-rc1/include/QtGui/qtransform.h:312: note: QDataStream& operator<<(QDataStream&, const QTransform&)
/usr/local/Trolltech/Qt-4.4.0-rc1/include/QtGui/qtransform.h:316: note: QDebug operator<<(QDebug, const QTransform&)
/usr/local/Trolltech/Qt-4.4.0-rc1/include/QtGui/qimage.h:341: note: QDataStream& operator<<(QDataStream&, const QImage&)
/usr/local/Trolltech/Qt-4.4.0-rc1/include/QtGui/qpixmap.h:287: note: QDataStream& operator<<(QDataStream&, const QPixmap&)
/usr/local/Trolltech/Qt-4.4.0-rc1/include/QtGui/qbrush.h:151: note: QDataStream& operator<<(QDataStream&, const QBrush&)
/usr/local/Trolltech/Qt-4.4.0-rc1/include/QtGui/qbrush.h:156: note: QDebug operator<<(QDebug, const QBrush&)
/usr/local/Trolltech/Qt-4.4.0-rc1/include/QtGui/qpalette.h:253: note: QDataStream& operator<<(QDataStream&, const QPalette&)
/usr/local/Trolltech/Qt-4.4.0-rc1/include/QtGui/qfont.h:343: note: QDataStream& operator<<(QDataStream&, const QFont&)
/usr/local/Trolltech/Qt-4.4.0-rc1/include/QtGui/qfont.h:348: note: QDebug operator<<(QDebug, const QFont&)
/usr/local/Trolltech/Qt-4.4.0-rc1/include/QtGui/qsizepolicy.h:209: note: QDataStream& operator<<(QDataStream&, const QSizePolicy&)
/usr/local/Trolltech/Qt-4.4.0-rc1/include/QtGui/qcursor.h:153: note: QDataStream& operator<<(QDataStream&, const QCursor&)
/usr/local/Trolltech/Qt-4.4.0-rc1/include/QtGui/qicon.h:131: note: QDataStream& operator<<(QDataStream&, const QIcon&)
/usr/local/Trolltech/Qt-4.4.0-rc1/include/QtGui/qgraphicsitem.h:956: note: QDebug operator<<(QDebug, QGraphicsItem*)
/usr/local/Trolltech/Qt-4.4.0-rc1/include/QtGui/qgraphicsitem.h:957: note: QDebug operator<<(QDebug, QGraphicsItem::GraphicsItemChange)
/usr/local/Trolltech/Qt-4.4.0-rc1/include/QtGui/qpen.h:122: note: QDataStream& operator<<(QDataStream&, const QPen&)
/usr/local/Trolltech/Qt-4.4.0-rc1/include/QtGui/qpen.h:135: note: QDebug operator<<(QDebug, const QPen&)
/usr/local/Trolltech/Qt-4.4.0-rc1/include/QtGui/qpicture.h:189: note: QDataStream& operator<<(QDataStream&, const QPicture&)
/usr/local/Trolltech/Qt-4.4.0-rc1/include/QtGui/qitemselectionmodel.h:222: note: QDebug operator<<(QDebug, const QItemSelectionRange&)
/usr/local/Trolltech/Qt-4.4.0-rc1/include/QtGui/qlistwidget.h:198: note: QDataStream& operator<<(QDataStream&, const QListWidgetItem&)
/usr/local/Trolltech/Qt-4.4.0-rc1/include/QtGui/qstandarditemmodel.h:445: note: QDataStream& operator<<(QDataStream&, const QStandardItem&)
/usr/local/Trolltech/Qt-4.4.0-rc1/include/QtGui/qtablewidget.h:217: note: QDataStream& operator<<(QDataStream&, const QTableWidgetItem&)
/usr/local/Trolltech/Qt-4.4.0-rc1/include/QtGui/qtreewidget.h:251: note: QDataStream& operator<<(QDataStream&, const QTreeWidgetItem&)
/usr/local/Trolltech/Qt-4.4.0-rc1/include/QtGui/qtextformat.h:117: note: QDataStream& operator<<(QDataStream&, const QTextLength&)
/usr/local/Trolltech/Qt-4.4.0-rc1/include/QtGui/qtextformat.h:348: note: QDataStream& operator<<(QDataStream&, const QTextFormat&)
/usr/local/Trolltech/Qt-4.4.0-rc1/include/QtGui/qsplitter.h:154: note: QTextStream& operator<<(QTextStream&, const QSplitter&)
/usr/local/Trolltech/Qt-4.4.0-rc1/include/QtNetwork/qnetworkcookie.h:131: note: QDebug operator<<(QDebug, const QNetworkCookie&)
/usr/local/Trolltech/Qt-4.4.0-rc1/include/QtNetwork/qabstractsocket.h:236: note: QDebug operator<<(QDebug, QAbstractSocket::SocketError)
/usr/local/Trolltech/Qt-4.4.0-rc1/include/QtNetwork/qabstractsocket.h:237: note: QDebug operator<<(QDebug, QAbstractSocket::SocketState)
/usr/local/Trolltech/Qt-4.4.0-rc1/include/QtNetwork/qhostaddress.h:136: note: QDebug operator<<(QDebug, const QHostAddress&)
/usr/local/Trolltech/Qt-4.4.0-rc1/include/QtNetwork/qhostaddress.h:143: note: QDataStream& operator<<(QDataStream&, const QHostAddress&)
/usr/local/Trolltech/Qt-4.4.0-rc1/include/QtNetwork/qnetworkinterface.h:119: note: QDebug operator<<(QDebug, const QNetworkInterface&)
/usr/local/Trolltech/Qt-4.4.0-rc1/include/QtNetwork/qlocalsocket.h:146: note: QDebug operator<<(QDebug, QLocalSocket::LocalSocketError)
/usr/local/Trolltech/Qt-4.4.0-rc1/include/QtNetwork/qlocalsocket.h:147: note: QDebug operator<<(QDebug, QLocalSocket::LocalSocketState)
/usr/local/Trolltech/Qt-4.4.0-rc1/include/QtNetwork/qsslcertificate.h:142: note: QDebug operator<<(QDebug, const QSslCertificate&)
/usr/local/Trolltech/Qt-4.4.0-rc1/include/QtNetwork/qsslcertificate.h:143: note: QDebug operator<<(QDebug, QSslCertificate::SubjectInfo)
/usr/local/Trolltech/Qt-4.4.0-rc1/include/QtNetwork/qsslcipher.h:101: note: QDebug operator<<(QDebug, const QSslCipher&)
/usr/local/Trolltech/Qt-4.4.0-rc1/include/QtNetwork/qsslerror.h:121: note: QDebug operator<<(QDebug, const QSslError&)
/usr/local/Trolltech/Qt-4.4.0-rc1/include/QtNetwork/qsslerror.h:122: note: QDebug operator<<(QDebug, const QSslError::SslError&)
/usr/local/Trolltech/Qt-4.4.0-rc1/include/QtNetwork/qsslkey.h:115: note: QDebug operator<<(QDebug, const QSslKey&)
/usr/local/Trolltech/Qt-4.4.0-rc1/include/QtXml/qdom.h:674: note: QTextStream& operator<<(QTextStream&, const QDomNode&)
mainwindow.cpp:167: attention : unused variable «cpt"
make: *** [mainwindow.o] Erreur 1

[yan]

salut

Code :

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cout << e.tagName() << endl;

tagName() te resort une QString. Il faut donc la convertir en string(toStdString()) ou wstring (toStdWString()) pour l'afficher avec cout ou wcout.
Comme tu est sous Qt tu devrait utiliser

Code :

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qDebug()<< e.tagName()

[GoldenEyes]

salut

Code :

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cout << e.tagName() << endl;

tagName() te resort une QString. Il faut donc la convertir en string(toStdString()) ou wstring (toStdWString()) pour l'afficher avec cout ou wcout.
Comme tu est sous Qt tu devrait utiliser

Code :

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qDebug()<< e.tagName()

salut ;;
merci beaucouq ça marche tres bien .
bon developpement;