Data serialization

shree_qt

I want to write on file using textedit based on the concept of data serialization. What can I do?

mostefa

Looks like you need to take a look at QDataStream class doc ,

http://doc.qt.io/qt-4.8/qdatastream.html#details

There is an example with explanation in this doc:

Example (write binary data to a stream):

QFile file("file.dat");
file.open(QIODevice::WriteOnly);
QDataStream out(&file);   // we will serialize the data into the file
out << QString("the answer is");   // serialize a string
out << (qint32)42;        // serialize an integer

Example (read binary data from a stream):

QFile file("file.dat");
file.open(QIODevice::ReadOnly);
QDataStream in(&file);    // read the data serialized from the file
QString str;
qint32 a;
in >> str >> a;           // extract "the answer is" and 42

Hope this can help !

dheerendra

In addition to previous post, You can look at http://www.ics.com/blog/object-serialization-and-persistence-using-qdatastream. It has nice example to do the same. If you need more help do let me know.

VRonin

This is a long-standing (6.5 years now) feature request, see https://bugreports.qt.io/browse/QTBUG-9258 but it would require a deep change in the underlying framework of QTextDocument.

If you are interested only in writing you can use QTextDocumentWriter but there is no corresponding reader.

You could implement a manual solution if you know what resources are used in the document

shree_qt

I am very beginning in qt and c++ also. Thanks for your post . I will try.

Bharath_pthinks

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