Operator Overloading

Hi all,

I'm new to QT and doing a sample app from Introduction to Design Patterns in C++ with Qt, 2nd Edition (10.1.2 Exercise: CardGame GUI).

I have a class Card and a classs Hand where I have overloaded the << operator, but I get the message error: invalid operands of types 'Hand*' and 'Card*' to binary 'operator<<' when I compile.

This are my classes:

card.h

[CODE]#ifndef CARD_H
#define CARD_H

#include <QObject>
#include <QLabel>

class Card : public QObject
{
Q_OBJECT
public:
explicit Card(QString name, QObject *parent = 0);

QString name() const {return m_name;}
QLabel* label(QWidget *parent = 0);
int value() const {return m_value;}
bool isAce() const {return m_isAce;}

private:
QString m_name;
int m_value;
bool m_isAce;
};

#endif // CARD_H[/CODE]

card.cpp

[CODE]#include "card.h"

Card::Card(QString name, QObject *parent) :
QObject(parent)
{
QChar value;

m_name = name;
m_isAce = name.startsWith('a', Qt::CaseInsensitive);
value = name[0].toLower();
if (value.isDigit())
{
m_value = value.digitValue();
} else if (value == 'a')
{
m_value = 1;
} else
{
m_value = 10;
}
}

QLabel* Card::label(QWidget *parent) {

QString fileName = QString(":/images/%1.png").arg(m_name);
QLabel* label = new QLabel(m_name, parent);
label->setPixmap(QPixmap(fileName));
return label;
}
[/CODE]

hand.h

[CODE]
#ifndef HAND_H
#define HAND_H

#include <QObject>

class Card;

class Hand : public QObject
{
Q_OBJECT
public:
explicit Hand(QString name, QObject *parent = 0);
Hand& operator<< (Card* card);
~Hand();

signals:
void handChanged();

public slots:

private:
QString m_name;
QList<Card*> m_cards;
};

#endif // HAND_H
[/CODE]

hand.cpp
[CODE]
#include "hand.h"
#include "card.h"

Hand::Hand(QString name, QObject *parent) :
QObject(parent)
{
m_name = name;
}

Hand& Hand::operator<< (Card* card) {
m_cards << card;
return *this;
}

Hand::~Hand() {
qDeleteAll(m_cards);
m_cards.clear();
}
[/CODE]

and this is the code I use to test the overloaded operator:

[CODE] Hand* hand = new Hand("hand", parent);
Card* card1 = new Card("a1", parent);

hand << card1;[/CODE]

Any help would be appreciate,

Alex B.