https://www.copperspice.com/docs/cs_api/class_qstringparser.html#ae4324c7ceaa527258544422e513acace
example code forgot to pass the string as the first parameter.
qint64 v3 = QStringParser::toInteger<qint64>(&ok, 16); // v3 == 255, ok == true
Documentation bug
Re: Documentation bug
Thanks, this will be updated in the next API release. This should be uploaded before the end of September.