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Questions - qbytearray

Is it possible that QFile::size() and QFile::readAll().size() differ for certain special files?

Seeing a weird crash due to read access violation. Here is the minimal code: struct MyFile : QFile { ... string read () { QByteArray content; if(<something>) content = QFile:...
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iammilind

c++

qt

buffer-overflow

qfile

qbytearray

Votes: 0

Answers: 1

Latest Answer

You code does not take the current file's seek position into account. Thus, in case there were some read operations already, it will crash, because QFile::readAll will return only a part of the file (...
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Alexander Dyagilev

QByteArray to short Int array in QT C++

I am receiving a QByteArray from UDP Socket. The QByteArray is of 52 elements each containing values from 0 to 9 - A to F. Now, I want to convert this QByteArray into a short int array of 13 elements ...
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Soham Patel

c++

qt

short

qbytearray

Votes: 0

Answers: 1

Latest Answer

You can use QByteArray::data() and QByteArray::constData() to access pointer to stored data and use c cast or reinterp_cast to cast specific type. Also you need to know endianness of data is it big-en...
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mugiseyebrows

How does QIODevice::readLine(qint64 maxSize = 0) works?

The documentation of this method states: QByteArray QIODevice::readLine(qint64 maxSize = 0) This is an overloaded function. Reads a line from the device, but no more than maxSize characters, and retu...
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iammilind

c++

qt

readline

behavior

qbytearray

Votes: 0

Answers: 1

Latest Answer

It's not mentioned in the Qt API documentation, but passing in a value of 0 as the maxSize argument is treated as having a special meaning of "as many bytes as possible". Evidence of that i...
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Jeremy Friesner

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