creating your own SLOT

Hello,
I'm creating my first app with my own slot .

I'm trying to program an app able to manage salaries and payment
in certain phase of the code I need to use the value choosed in the
QComboBox "CB01" to window "Win2" in order to modify some data
But I don't know how to transmit the value in "CB01" to the function
"MSte()" in "Win2"
but the way I'm using Qt4.8 with ubuntu 12.04
and this is the code

MainWin.cpp

Code:

#include "MainWin.h"
#include "Win1.h"
#include "Win2.h"
#include "Win3.h"
 
 
 
MainWin::MainWin()
{
    //SocietÃ©
 
    CB01=new QComboBox();
    QLabel *LAB01 = new QLabel("Societes :");
    QPushButton *PB01=new QPushButton("Ajouter");
    QPushButton *PB02=new QPushButton("Modifier");
    QPushButton *PB03=new QPushButton("Supprimer");
    QHBoxLayout *HB01=new QHBoxLayout;
    HB01->addWidget(PB01);
    HB01->addWidget(PB02);
    HB01->addWidget(PB03);
    QPushButton *PB04=new QPushButton("Recapitulation");
    QVBoxLayout *VB01 = new QVBoxLayout;
    VB01->addWidget(LAB01);
    VB01->addWidget(CB01);
    VB01->addLayout(HB01);
    VB01->addWidget(PB04);
 
    //EmployÃ©s
 
    CB02=new QComboBox;
    QLabel *LAB02 = new QLabel("Employes :");
    QPushButton *PB05=new QPushButton("Ajouter");
    QPushButton *PB06=new QPushButton("Modifier");
    QPushButton *PB07=new QPushButton("Supprimer");
    QHBoxLayout *HB02=new QHBoxLayout;
    HB02->addWidget(PB05);
    HB02->addWidget(PB06);
    HB02->addWidget(PB07);
    QPushButton *PB08=new QPushButton("Paie");
    QVBoxLayout *VB02 = new QVBoxLayout;
    VB02->addWidget(LAB02);
    VB02->addWidget(CB02);
    VB02->addLayout(HB02);
    VB02->addWidget(PB08);
 
    //Definition du titre de la fenetre
 
    QVBoxLayout *MW = new QVBoxLayout;
    MW->addLayout(VB01);
    MW->addLayout(VB02);
    setLayout(MW);
    setWindowTitle("Easy Paie");
    resize(400,250);
 
 
    //Connextions des signaux et des slots
 
    connect(PB01,SIGNAL(clicked()),this,SLOT(AddSte()));
    connect(PB02,SIGNAL(clicked()),this,SLOT(ModSte(CB01)));
    connect(PB03,SIGNAL(clicked()),this,SLOT(DelSte()));
}
 
void MainWin::AddSte()
{
    Win1 *win1=new Win1();
    win1->show();
}
 
void MainWin::ModSte(QComboBox CB01)
{
 
    Win2 *win2(CB01)=new Win2();
    win2.show();
}

MainWin.h

Code:

#ifndef MAINWIN_H
#define MAINWIN_H
 
#include <QtGui>
 
class MainWin : public QWidget
{
    Q_OBJECT
public:
    MainWin();
private slots:
    void AddSte();
    void ModSte(QComboBox CB01);
    void DelSte();
private:
    QComboBox *CB01;
    QComboBox *CB02;
    QPushButton *PB01;
    QPushButton *PB02;
    QPushButton *PB03;
    QPushButton *PB04;
    QPushButton *PB05;
    QPushButton *PB06;
    QPushButton *PB07;
    QPushButton *PB08;
};
 
#endif // MAINWIN_H

Win2.cpp

Code:

#include "Win2.h"
#include <fstream>
#include <string>
#include <QString>
 
using namespace std;
 
 
Win2::Win2()
{
    LE21=new QLineEdit;
    QLabel *LAB21 = new QLabel("Nom societe :");
    LE22=new QLineEdit;
    QLabel *LAB22=new QLabel("Num CNSS :");
    QPushButton *PB21=new QPushButton("Annuler");
    QPushButton *PB22=new QPushButton("Modifier");
    QHBoxLayout *HB21=new QHBoxLayout;
    HB21->addWidget(PB21);
    HB21->addWidget(PB22);
    QVBoxLayout *VB21=new QVBoxLayout;
    VB21->addWidget(LAB21);
    VB21->addWidget(LE21);
    VB21->addWidget(LAB22);
    VB21->addWidget(LE22);
    VB21->addLayout(HB21);
    setLayout(VB21);
    setWindowTitle("Modifier");
 
    //connect
 
    connect(PB21,SIGNAL(clicked()),this,SLOT(close()));
    connect(PB22,SIGNAL(clicked()),this,SLOT(MSte(CB01)));
 
 
 
}
 
 
void Win2::MSte(QComboBox CB01)
{
    string s1,s2,ss,ch;
    QString ste,cnss;
    ste=LE21->text();
    cnss=LE22->text();
    s1=ste.toStdString();
    s2=cnss.toStdString();
    ss=s2+' '+s1;
    ofstream NS("NSTE");
    ifstream S("STE");
    while(!S.eof())
    {
        S>>ch;
        if(ch==ss)
            NS<<"FUCK"<<endl;
        else
            NS<<ch<<endl;
    }
    S.close();
    NS.close();
 
    close();
 
 
}

Win2.h

Code:

#ifndef WIN2_H
#define WIN2_H
 
#include <QtGui>
 
class Win2: public QWidget
{
    Q_OBJECT
public:
    Win2(QComboBox CB01);
private slots:
    void MSte(QComboBox CB01);
 
private:
    QLineEdit *LE21;
    QLineEdit *LE22;
    QPushButton *PB21;
    QPushButton *PB22;
};
 
 
#endif // WIN2_H

And thank you
:cool: