QTextStream and hex data

[enno]

I want to read hex data from a QTextStream

#include <QTextStream>
int main(int, char**) {
  QString string("hexvalue 7C00 15");
  QTextStream	in(&string);
  in.setIntegerBase(16);
  QString str1, str2;
  unsigned int val1;
  in >> str1 >> val1 >> str2;
  qDebug("%s %x %s", qPrintable(str1), val1, qPrintable(str2));
  return 0;
}

#include <QTextStream>
int main(int, char**) {
  QString string("hexvalue 7C00 15");
  QTextStream	in(&string);
  in.setIntegerBase(16);
  QString str1, str2;
  unsigned int val1;
  in >> str1 >> val1 >> str2;
  qDebug("%s %x %s", qPrintable(str1), val1, qPrintable(str2));
  return 0;
}

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This program outputs

hexvalue 0 C00

hexvalue 0 C00

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I thought that setIntegerBase(16) tells the stream to expect hex input when reading integers. The read stops on the character C, whic becomes p[art of a following string.

Can I read a hex value without reading a string and then converting and without a 0x prefix ?
All ideas welcome

Enno