PlEASE HELP: Hot To Use Byte Array, data stream

[ChrisW67]

QDataStream data(&arr,QIODevice::ReadWrite);
data.setVersion(QDataStream::Qt_4_6);
data<<(quint16(0))<<quint8('S');
data<<message;
data<<(quint8('L'));
data.device()->seek(0);
data<<(arr.size()-sizeof(quint16));   // How many bytes are being written here?
tBrowser->append(QString::number(type2));

QDataStream data(&arr,QIODevice::ReadWrite);
data.setVersion(QDataStream::Qt_4_6);
data<<(quint16(0))<<quint8('S');
data<<message;
data<<(quint8('L'));
data.device()->seek(0);
data<<(arr.size()-sizeof(quint16));   // How many bytes are being written here?
tBrowser->append(QString::number(type2));

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When I try a quick test:

QString message("ABCDEF");
QByteArray arr;
 
QDataStream data(&arr,QIODevice::ReadWrite);
data.setVersion(QDataStream::Qt_4_6);
data<< quint16(0xBEEF) <<quint8('S');
data<<message;
data<<(quint8('L'));
qDebug() << arr.toHex();
data.device()->seek(0);
data << (arr.size() - sizeof(quint16));
qDebug() << arr.toHex();
data.device()->seek(0);

QString message("ABCDEF");
QByteArray arr;

QDataStream data(&arr,QIODevice::ReadWrite);
data.setVersion(QDataStream::Qt_4_6);
data<< quint16(0xBEEF) <<quint8('S');
data<<message;
data<<(quint8('L'));
qDebug() << arr.toHex();
data.device()->seek(0);
data << (arr.size() - sizeof(quint16));
qDebug() << arr.toHex();
data.device()->seek(0);

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I get 18 bytes (0x00000012 bytes) excluding the size field:

"beef530000000c0041004200430044004500464c" 
"0000001200000c0041004200430044004500464c"

"beef530000000c0041004200430044004500464c" 
"0000001200000c0041004200430044004500464c"

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I think you can see the problem now.

PS: Were you expecting Unicode characters at the receiving end?