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I've got a QDomElement, and I would like to debug it, i.e. see it as plain text in debug console. In order to output it with qDebug(), it needs to be in QString format, however I don't see any conversion method from a QDomElement nor a QDomNode.

Any idea? Thanks!

moala
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4 Answers4

10

There is no built-in operator for streaming DOM elements to QDebug. You could write one easily enough, something like:

QDebug operator<<(QDebug dbg, const QDomNode& node)
{
  QString s;
  QTextStream str(&s, QIODevice::WriteOnly);
  node.save(str, 2);
  dbg << qPrintable(s);
  return dbg;
}
Dan Milburn
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  • Just edited your answer so that QDebug is used as a reference, in order to be declared using only a forward-declaration on QDebug. Your answer addresses perfectly my question, so I'll choose your answer instead of mine. Thanks !! – moala Aug 13 '11 at 10:12
0

Use QTextStream:

QTextStream lTS(stdout);
lTS << lMyDomElement;
moala
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0

if you #include <QDebug> QDebug would act as TextStream itself. i.e. qDebug()<< lMyDomElement; would be enough)

Raiv
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  • Actually, not with my config (gcc4.2, Qt 4.6.3). Hence my question. Maybe the implicit cast is not discovered? Maybe add the right (ugly) cast? – moala Aug 12 '11 at 10:53
  • well... then your initial version is better. – Raiv Aug 12 '11 at 10:59
0

Well I also come across similar situations, in that case my best bet is to make use of the QDomDocument which this QDomElement is part of. So I would say you cannot get a direct way to access the QDomElement but you can achieve that using the QDomDocument.

For this you need to ensure that your QDomDocument gets updated with the recent QDomElement and then use QDomDocument::toString() which would return you the whole document as a QString.

Here is the Qt reference.

Hope this helps.

Purnima
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