Reading and rereading a file with QXmlStreamReader

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void QXmlStreamReader::setDevice(QIODevice * device)

void QXmlStreamReader::setDevice(QIODevice * device)

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Sets the current device to device. Setting the device resets the stream to its initial state.

See also device() and clear().

http://doc.qt.io/qt-4.8/qxmlstreamre...l#namespaceUri