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//controller.h (базовый класс)

#ifndef CONTROLLER_H
#define CONTROLLER_H

#include <QObject>

class Controller : public QObject
{
    Q_OBJECT

public:
    explicit Controller(QObject *parent = 0);
    
signals:

    
public slots:
    virtual void readMessage() = 0;
    virtual void sandMessage(QString) = 0;
    
};

#endif // CONTROLLER_H

//controller.cpp 

#include "controller.h"

Controller::Controller(QObject *parent) :
    QObject(parent)
{
}

virtual void Controller::sandMessage(QString){

}
virtual void Controller::readMessage(){

}

//controllerUDP.h

#ifndef CONTROLLER_H
#define CONTROLLER_H

#include "controller.h"
#include <QObject>
#include <QUdpSocket>


class ControllerUDP : public Controller
{

private:
    QUdpSocket *socket;
    QHostAddress fromAdr;
    quint16 fromPort;
    quint16 toPort;

public:
    explicit ControllerUDP(QObject *parent = 0);
    
signals:
    void addMessage(QString,QString);
    
public slots:
    void getValue(int,QString,int);
    void readMessage();
    void sandMessage(QString);
    
};

#endif // CONTROLLER_H

#ifndef CONTROLLER_H
#define CONTROLLER_H