QBuffer::readLine()

[vfernandez]

#include <QtCore>

int main(int argc, char *argv[])
{
QCoreApplication app(argc, argv);
QBuffer buf;
buf.open(QIODevice::ReadWrite);
buf.write("Hello!\n");
qDebug() << buf.data(); // prints Hello!\n
qDebug() << buf.canReadLine(); // returns false!
qDebug() << buf.readLine(); // returns an empty string!
}

I'm using QBuffer for a unit test and I've found this behaviour. I'm using 4.6.2. The Qt docs state you can use readLine() but in fact it returns an empty string. Is this correct or a Qt bug?

[wysota]

This is correct. You didn't rewind the buffer. If you seek to the beginning of the buffer, you will be able to read from it.

[vfernandez]

Oops! Dzękuje.