std::ostream to QDataStream

Question

I have overloaded \'<<\' operator for MyClass.

friend std::ostream& operator << (std::ostream& out, const MyClass& Obj);

Answer 1

You can't just convert one into the other. But you can use QBuffer as a workaround. It is a QIODevice, so you can create a QDataStream from it. When done writing your data, get the QByteArray from the buffer and use its data to write to your std::ostream.