int main()
{
// module A creates a byte array
QByteArray bai;
QDataStream out(&bai, QIODevice::WriteOnly);
out << QString("A QString"); // writes some information on it
Some tool kits use a buffer in their version of QDataStream.
You can not in general be sure that anything has actually been
written to 'bai' here because 'out' is still alive.
// passing bai to module A
// module A do something...
QFile file("file.dat");
file.open(QIODevice::WriteOnly);
QDataStream out2(&file); // and module A write those datas to a file.
out2 << bai.size();
out2 << bai;
// and module B starts
if (file.isOpen())
file.close();
file.open(QIODevice::ReadOnly);
QDataStream in(&file);
QString str;
int a; // extracts size information
in >> a >> str; // extracts QString
You are reading an 'int' but you did not insure that an 'int' was written.
Year wrote a QByteArray, but are then reading a QString.
file.close();
qDebug() << str << a; // output: "\u0000\u0012A QString" 22
return 0;
}
I guess using QByteArray get things messed up. But then is there any advice to
pass the information to another function?
Thank you,
Sina
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http://lists.qt-project.org/mailman/listinfo/interest
