compile error that i don't understand

[incapacitant]

I have selected the lines relevant (sic) to the prolem:
first archiv.h puis archiv.cpp

class Archives : public QDialog
{
    Q_OBJECT
 
public:
    Archives( QWidget *parent = 0 );
    ~Archives();
 
protected:
  QAbstractItemModel *model;
  QTreeView *qArchiv;
 
  void addArchiv( QString sDate, QString sDest, QString sMsg );
  void remplirArchiv();
  void selmsg( const QModelIndex() &);
 
  QPushButton *pbOk;
};

class Archives : public QDialog
{
    Q_OBJECT

public:
    Archives( QWidget *parent = 0 );
    ~Archives();
    
protected:
  QAbstractItemModel *model;
  QTreeView *qArchiv;

  void addArchiv( QString sDate, QString sDest, QString sMsg );
  void remplirArchiv();
  void selmsg( const QModelIndex() &);

  QPushButton *pbOk;
};

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//****************************************************************
  connect( qArchiv, SIGNAL( clicked( const QModelIndex() ) ), 
  this, SLOT( selmsg( const QModelIndex() ) ) );
}
 
void Archives::selmsg( const QModelIndex() idx )
{
     accept();
     close();
}

//****************************************************************
  connect( qArchiv, SIGNAL( clicked( const QModelIndex() ) ), 
  this, SLOT( selmsg( const QModelIndex() ) ) );
}

void Archives::selmsg( const QModelIndex() idx )
{
     accept();
     close();
}

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compile:
7 C:\Qt\test\sms\archiv.cpp In file included from archiv.cpp
24 C:\Qt\test\sms\archiv.h variable or field `selmsg' declared void
24 C:\Qt\test\sms\archiv.h expected `;' before '(' token
60 C:\Qt\test\sms\archiv.cpp variable or field `selmsg' declared void
60 C:\Qt\test\sms\archiv.cpp `int Archives::selmsg' is not a static member of `class Archives'
60 C:\Qt\test\sms\archiv.cpp expected primary-expression before "const"