Because QNetworkCookieJar inherits from QObject and QObject cannot be copied because of parenting issues (amongst others).

That could not be the reason cause QNetworkAccessManager also inherits QObject and can be copied.

No it cannot. There is no explicitly defined copy constructor or assignment operator so it will try to use a default member-wise one created by the compiler which will fail when it tries to recurse to the base class’ (QObject’s) copy constructor or assignment operator.

Nothing derived from QObject can be copied because QObject marks its copy constructor and assignment operator as private.

But do it work for QNetworkAccessManager wich also inherits QObject and has no copy constructor?

If you can copy a QNetworkAccessManager, then I would considder that a Qt bug. Don’t (try to) copy QObject or QObject derived objects.

Does anybody then know how to get a object inheriting QNetworkCookieJar into a QNetworkObjectJar variable? Currently I am using a <reinterpretate_cast> to do it (this works cause my class has no member varibales just two functions).

You could subclass QNetworkObjectJar, and implement a clone function like this:

But watch out: you must delete the returned pointer yourself. There is NO way of treating QObject derived classes as value types!

That was the idea I also had first but keep in mind that that the CooieJar also can connect some cookies with an URI. This connections will be lost if do like you discribed.

Class QNetworkCookie contains the URI the cookie is bound to. According to the API docs the methods allCookies() and setAllCookies() can be used to implement a permanent cookie storage. So I think the returned list of cookies contains all the necessary information. If not, I’d definitely call this a bug :-)

Your right the data is being set up in QNetworkCookie. So your funtion will work and I am happy now that I do not have to use this cast. :) Thanks

Hi,
I realized that my problem description was insufficient and the problem has not been solved yet.
I want to do something like this:

But since the functions “setAllCookies” and “allCookies” are protected I am unable to do so. What is the proper way to do what I want to do?

the docs say:

This function is suitable for derived classes to save cookies to disk, ….

So should you extend QNetworkCookieJar class and override these methods?

haithun wrote:

Hi,
I realized that my problem description was insufficient and the problem has not been solved yet.
I want to do something like this:

1. void Class::SetCookieList(const QList<QNetworkCookie> &Cookies)
2. {
3.     _CookieJar->setAllCookies(Cookies);
4. }
5.  
6. QList<QNetworkCookie> Class::CookieList() const
7. {
8.     return _CookieJar->allCookies();
9. }

But since the functions “setAllCookies” and “allCookies” are protected I am unable to do so. What is the proper way to do what I want to do?

That was also my idea but I have the problem that I want to write the data of a normal QNetworkCookieJar to my class which is quite difficult without a copyconstructor.
Anybody knowing a good solution?

Why do you need more than one?