QByteArray char to int

[pdoria]

Hi,

I have the following code:

quint64 input251 = Q_UINT64_C(2161727824133970762);
QByteArray in251 = QByteArray::fromRawData((char *)&input251, sizeof(input251));

quint64 input251 = Q_UINT64_C(2161727824133970762);
QByteArray in251 = QByteArray::fromRawData((char *)&input251, sizeof(input251));

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the first 4 bytes are a time value (to be processed later)
the next 4 are an id value.

in251 holds the value: "J[²

This piece of code:

bool ok;
msgTime = in251.left(4).toUInt(&ok);
if (!ok) printf ("Conversion ERROR!\r\n" );

bool ok;
msgTime = in251.left(4).toUInt(&ok);
if (!ok) printf ("Conversion ERROR!\r\n" );

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always returns "Conversion error" and msgTime, of course, is set to zero.

Why can't .toUint() convert those bytes to an int?

Already thankful for any thoughts,
Pedro Doria Meunier

[Lykurg]

in251 holds the value: "J[²

This piece of code:

bool ok;
msgTime = in251.left(4).toUInt(&ok);
if (!ok) printf ("Conversion ERROR!\r\n" );

bool ok;
msgTime = in251.left(4).toUInt(&ok);
if (!ok) printf ("Conversion ERROR!\r\n" );

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always returns "Conversion error" and msgTime, of course, is set to zero.

Why can't .toUint() convert those bytes to an int?

? Have you looked what in251.left(4) gives you back if the value of in251 is "J[²"? That can't work. Use QString::number() to convert a number in a string/byte array!

qWarning() << QString::number(input251).left(4).toInt();

qWarning() << QString::number(input251).left(4).toInt();

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