How can read 0x00 from hex file?

zhmh

I read 4 bytes 4 bytes from a hex file but it does not read 0x00, for example a line is 0002EE00
But only 02EE is read and when converted to decimal it should be 0002EE00 = 192000 but 02EE = 750 is received ,How can I fix it?

bool ok;  QByteArray line; uint FPS, NumChannel, intsample, intband = 0;

QString dataFilePath = QDir::homePath().append("/1.dat"); /
 mDataFile = new QFile(dataFilePath);
 mDataFile->open(QFile::OpenModeFlag::ReadOnly);


 do {
     line = mDataFile->read(4).data();
     if (line.toHex()== "649832fa") {
        mDataFile->seek(9);
         QByteArray sampleRate = mDataFile->read(4).data();
         qDebug()<<sampleRate.toHex();
        QString str(sampleRate.toHex());
                   intsample = str.toUInt(&ok,16);
                    qDebug()<<intsample;
       }
 } while (!line.isNull());

Christian Ehrlicher

@zhmh said in How can read 0x00 from hex file?:

line = mDataFile->read(4).data();

This is wrong. You convert a QByteArray to a char* and than back to a QByteArray for no reason with operator =(const char*) which takes \0 as string terminator (what else should it use though)