Overloading a Qt-function in a sub-class of QTcpServer

I have a subclass of QTcpServer:

.h-file:

#ifndef GEOLISTENER_H
#define GEOLISTENER_H

#include <QTcpServer>

class GeoListener : public QTcpServer
{
    Q_OBJECT
public:
    explicit GeoListener(QObject *parent = 0);
    bool listen(void);
signals:

public slots:
    void handleConnection(void);

};

#endif // GEOLISTENER_H

.cpp-file:

#include "geolistener.h"
#include <QDebug>

GeoListener::GeoListener(QObject *parent) :
    QTcpServer(parent)
{
    QObject::connect(this, SIGNAL(newConnection()),this, SLOT(handleConnection(开发者_StackOverflow中文版)));
}

bool GeoListener::listen(void)
{
    bool ret;
    ret = this->listen(QHostAddress::Any, 9871); //This function isn't found!
    /* If something is to be done right after listen starts */

    return ret;
}

void GeoListener::handleConnection(void) {
    qDebug() << "got connection";
}

The base class of the Qt-Framework has this function:

bool QTcpServer::listen ( const QHostAddress & address = QHostAddress::Any, quint16 port = 0 )

I overloaded it with a listen()-function. If I do that I can't call the function above - in my opinion this should work. Why isn't it working? Any ideas?

First of all, just a remark: those QT classes are designed for composition, not for inheritance.

Anyway, the problem here is that your listen() function is hiding the base's listen().

Your problem is resolved by:

static_cast<QTcpServer*>(this)->listen(QHostAddress::Any, 9871);

Because the name listen hides the base's function with the same name. In the definition of your class you can write using QTcpServer::listen; and thus the base's listen will be able to participate in overload resolution