Hello Everyone, I'm trying to implement a Polymorphic Queue. Here is my trial:

QQueue <Request *> requests;

while(...)
    {
        QString line = QString::fromUtf8(client->readLine()).trimmed();

        if(...)){                      
            Request *request=new Request();
            request->tcpMessage=line.toUtf8();
            request->decodeFromTcpMessage(); //this initialize variables in request using tcpMessage
            if(request->requestType==REQUEST_LOGIN){
                LoginRequest loginRequest;
                request=&loginRequest;
                request->tcpMessage=line.toUtf8();
                request->decodeFromTcpMessage();
                requests.enqueue(request);
            }
            //Here pointers in "requests" do not point to objects I created above, and I noticed that their destructors are also called.
            LoginRequest *loginRequest2=dynamic_cast<LoginRequest *>(requests.dequeue());   
            loginRequest2->decodeFromTcpMessage();
        }
    }

Unfortunately, I could not manage to make work Polymorphic Queue with this code because of the reason I mentioned in second comment.I guess, I need to use smart-pointers, but how? I'm open to any improvement of my code or a new implementation of polymorphic queue.

Thanks.