QByteArray revisited

[pdoria]

Hi,

I'm having problems extracting contents from a QByteArray...

Given the code:

QByteArray unitData;
unitData=tcpSocket.readAll(); // incoming binary data
.
.
.
const char *c_str = unitData.toHex().data();
cout << "Received: " << c_str << endl;

QByteArray unitData;
unitData=tcpSocket.readAll(); // incoming binary data
.
.
.
const char *c_str = unitData.toHex().data();
cout << "Received: " << c_str << endl;

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outputs correctly:

000F353334...yacka yacka...

but when one tries:

void myUnit::checkImei (QByteArray &data)
{
	bool ok;
	// check the # of bytes in the header
	unsigned int nbrBytes = data.left(2).toUInt(&ok,16);
	if (!ok) cout << "Conversion impossible!" << endl;
	cout << "# bytes: " << nbrBytes << endl;
 
}

void myUnit::checkImei (QByteArray &data)
{
	bool ok;
	// check the # of bytes in the header
	unsigned int nbrBytes = data.left(2).toUInt(&ok,16);
	if (!ok) cout << "Conversion impossible!" << endl;
	cout << "# bytes: " << nbrBytes << endl;

}

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number of bytes is *always* zero!

Any pointers would be highly appreciated...
Kind regards,
Pedro Doria Meunier