c++ - How to fix memory leak while inheriting from QObject? -

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i have simple class:

class httpclient : public qobject {      q_object public:      qnetworkaccessmanager* manager;     qnetworkreply* reply;      httpclient(){         manager = new qnetworkaccessmanager();         reply = nullptr;     }     ~httpclient(){         delete reply;     }      public slots:         void slotreadyread(){             cout << reply->readall().data() << endl;         }         void slotnetworkerror(qnetworkreply::networkerror error){             cout << reply->error() << endl;         } public:     void get(qurl url){          qnetworkrequest request;         request.seturl(url);          reply = manager->get(request);         connect(reply, signal(finished()), this, slot(slotreadyread()));         connect(reply, signal(error(qnetworkreply::networkerror)), this, slot(slotnetworkerror(qnetworkreply::networkerror)));     } };  int main(int argc, char *argv[]) {     qcoreapplication a(argc, argv);      httpclient client;     client.get(qurl("http://localhost/somewebservice.svc/getdata"));      return a.exec(); }

visual leak detector points memory leak @ point:

manager = new qnetworkaccessmanager(this);

how fix it? don't insist best solution, starting qt , don't understand why leaking memory here.

this because pass parent object pointer via "this" to

http://qt-project.org/doc/qt-4.8/qnetworkaccessmanager.html#qnetworkaccessmanager

and ownership, therefor qt memory model take care of deleting object, see

http://qt-project.org/doc/qt-4.8/objecttrees.html

also, check out

memory management in qt?


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