gistfile1.txt

#include <QtCore/QtCore>
#include <QtCore/QCoreApplication>
#include <QtCore/QByteArray>
#include <QtCore/QDebug>
#include <QtCore/QLatin1Char>

int main(int argc, char **argv)
{
    QCoreApplication app(argc, argv);
    static const char mydata[] = {
        0xc7, 0xcc, 0x3e, 0x0b, 0x00
    };

    QByteArray data = QByteArray::fromRawData(mydata, sizeof(mydata)).toHex();
    qDebug() << QString("0x%1").arg(data.at(0), 2, QLatin1Char('0'));
}