error: no matching function for call to 'QNetworkAccessManager::QNetworkAccessManager(Networking* const)'

This is my files. I have some problems with that.

   // networking.h

#ifndef NETWORKING_H
#define NETWORKING_H

#include <QNetworkReply>

class Networking
{
public:
    Networking();
    void getNetReply();
    void replyFinished(QNetworkReply*);
};

#endif // NETWORKING_H




//networking.cpp
#include "networking.h"
#include <QtNetwork/QNetworkAccessManager>
#include <QUrl>
#include <QNetworkRequest>
#include <QObject>

Networking::Networking()
{
}

void Networking::getNetReply(){
    QNetworkAccessManager * man;
    man = new QNetworkAccessManager(this);
    qDebug() << "Getting content..." << endl;

    QNetworkRequest request(QUrl("http://www.google.pl"));
    qDebug() << "Network request..." << endl;

    QNetworkReply * NetRepl;
    QObject::connect(man, SIGNAL(finished(QNetworkReply *)), this, SLOT(replyFinished(QNetworkReply*)));

    NetRepl = man->get(request);
    qDebug() << "Network reply..." << endl;

    qDebug() << "Connecting..." << endl;

}

void Networking::replyFinished(QNetworkReply* reply){
    // my code
    reply->readAll();
}

My error messages. I have googled a lot and read the documentation:

error: no matching function for call to QNetworkAccessManager::QNetworkAccessManager(Networking* const) man = new QNetworkAccessManager(this);

20: error: no matching function for call to QObject::connect(QNetworkAccessManager*&, const char*, Networking* const, const char*) QObject::connect(man, SIGNAL(finished(QNetworkReply *)), this, SLOT(replyFinished(QNetworkReply*)));

Add Q_OBJECT macro to your class without ;

class Networking : public QObject
{
Q_OBJECT
public:
    Networking();
    void getNetReply();

And rebuild all project

Without this macro moc cannot find your class and you can't use signals/slots mechanism. Also your class should be derivated from QObject explicitly or implicitly.