signals_slots.h

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#ifndef SIGNALS_SLOTS_H
#define SIGNALS_SLOTS_H

#include <QObject>

class Receiver : public QObject
{
    Q_OBJECT

public:
    Receiver(QObject *parent=0) : QObject(parent)
    {
    }

public slots:
    void printNumber(int n);
};

class Mediator : public QObject
{
    Q_OBJECT

public:
    Mediator(QObject *parent=0) : QObject(parent)
    {
    }

    void doSend();

signals:
    void send(int);
};

class Sender : public QObject
{
    Q_OBJECT

public:
    Sender(QObject *parent=0) : QObject(parent)
    {
    }

    void doTransmit();

signals:
    void transmit(int);
};

#endif // SIGNALS_SLOTS_H