Qt Code: 
  1. #include <QApplication>
  2. #include <QDebug>
  3. #include <QWebPage>
  4. #include <QWebFrame>
  5. #include <QWebElement>
  6.  
  7. int main(int argc, char *argv[])
  8. {
  9.     QApplication a(argc, argv);
  10.     QWebPage frame;
  11.     frame.mainFrame()->setHtml("<html><body><p>First Paragraph</p><p>Second Paragraph</p></body></html>");
  12.     QWebElement doc = frame.mainFrame()->documentElement();
  13.     QWebElement body = doc.firstChild();
  14.     qDebug() << body.toPlainText();
  15.     QWebElement firstParagraph = body.firstChild();
  16.     qDebug() << firstParagraph.toPlainText();
  17.     QWebElement secondParagraph = firstParagraph.nextSibling();
  18.     qDebug() << secondParagraph.toPlainText();
  19.     return a.exec();
  20. }
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Output is :

This example is from oficial doc so why this always empty and when i use other exaples it is empty too.