Two class, two headers files - one problem.

[h-n-s]

#ifndef FORMCLASS1_H
#define FORMCLASS1_H
 
#include <QWidget>
#include "formclass2.h"
 
namespace Ui {
class FormClass1;
}
 
class FormClass1 : public QWidget
{
    Q_OBJECT
 
public:
    explicit FormClass1(QWidget *parent = 0);
    ~FormClass1();
 
    void test1(FormClass2 *ttee);
private:
    Ui::FormClass1 *ui;
};
 
#endif // FORMCLASS1_H

#ifndef FORMCLASS1_H
#define FORMCLASS1_H

#include <QWidget>
#include "formclass2.h"

namespace Ui {
class FormClass1;
}

class FormClass1 : public QWidget
{
    Q_OBJECT
    
public:
    explicit FormClass1(QWidget *parent = 0);
    ~FormClass1();
    
    void test1(FormClass2 *ttee);
private:
    Ui::FormClass1 *ui;
};

#endif // FORMCLASS1_H

To copy to clipboard, switch view to plain text mode 

#ifndef FORMCLASS2_H
#define FORMCLASS2_H
 
#include <QWidget>
 
#include "formclass1.h"
 
namespace Ui {
class FormClass2;
}
 
class FormClass2 : public QWidget
{
    Q_OBJECT
 
public:
    explicit FormClass2(QWidget *parent = 0);
    ~FormClass2();
 
 
    void test2(FormClass1 *test222);
 
private:
    Ui::FormClass2 *ui;
};
 
#endif // FORMCLASS2_H

#ifndef FORMCLASS2_H
#define FORMCLASS2_H

#include <QWidget>

#include "formclass1.h"

namespace Ui {
class FormClass2;
}

class FormClass2 : public QWidget
{
    Q_OBJECT
    
public:
    explicit FormClass2(QWidget *parent = 0);
    ~FormClass2();


    void test2(FormClass1 *test222);

private:
    Ui::FormClass2 *ui;
};

#endif // FORMCLASS2_H

To copy to clipboard, switch view to plain text mode 

Hi, I want to create a program that will consist of two classes.
I want to do something like this:
http://stackoverflow.com/questions/1...nother-class-c

but there is a problem:
/home/hans/QT_projects/Classtest/formclass2.h:21: błąd:'FormClass1' has not been declared


Please help me.