не считывает GetDlgItemText в MFC

class Box
{ 
 
double length; 
double width; 
double heigth; 
 
public: 
 
Box (double l=1.0,double w=1.0,double h=1.0);
Box (const Box & rect);
 
virtual ~ Box();
 
double Getlength();
double Getlwidht();
double Getlheight();
 
void Putlength(double l);
void Putlwidht(double w);
void Putlheight(double h);
 
 
double V(); 
double P(); 
double Z(); 
double X(); 
double C(); 
};
 
Box::Box(double l,double w,double h)
{ 
    length=l;
width=w;
heigth=h;
}
 
Box::Box(const Box &rect)
{
*this =rect;
}
 
Box::~Box()
{
}
 
 
double Box::Getlength() {return length;} 
double Box::Getlwidht() {return width;} 
double Box::Getlheight() {return heigth;} 
 
void Box::Putlength(double l) {if ((l>=0.0) && (l<=20.0)) length=l;}
void Box::Putlwidht(double w) {if ((w>=0.0) && (w<=20.0)) width=w;}
void Box::Putlheight(double h) { if ((h>=0.0) && (h<=20.0)) heigth=h;}
 
double Box::V() 
{ 
return heigth*width*length;
}
double Box::P() 
{
return 2*(length*width+length*heigth+width*heigth);
}
double Box::Z() 
{ 
return heigth+width;
}double Box::X() 
{ 
return heigth+length;
}double Box::C() 
{ 
return width+length;
};
 
 
 
 
void CBoxDlg::OnButton1() 
{
    
 
    CString Baf;
 
    double Buf;
 
    GetDlgItemText(IDC_EDIT1, Baf);
 
Buf=atof ( Baf);
 
Box the_box;
the_box.Putlength(12);
 
    GetDlgItemText(IDC_EDIT2, Baf);
    Buf=atof ( Baf);
 
 
the_box.Putlheight(Buf);
 
 
    GetDlgItemText(IDC_EDIT3, Baf);
 
    Buf=atof ( Baf);
 
 
the_box.Putlwidht(Buf);
    
}
 
void CBoxDlg::OnButton4() 
{
Box the_box;
        char Baf[10];
    sprintf(Baf,"%2.2f",the_box.Getlheight());
 
    SetDlgItemText(IDC_EDIT4, Baf);
 
    sprintf(Baf,"%2.2f",the_box.Getlength());
 
    SetDlgItemText(IDC_EDIT5, Baf);
 
    sprintf(Baf,"%2.2f",the_box.Getlwidht());
 
    SetDlgItemText(IDC_EDIT6, Baf);
}
 
void CBoxDlg::OnButton7() 
{   
    Box a;
    char Baf[10];
 
    sprintf(Baf,"%2.2f",a.P());
    SetDlgItemText(IDC_EDIT7, Baf);
}
 
void CBoxDlg::OnButton8() 
{
    Box a;
    char Baf[10];
 
    sprintf(Baf,"%2.2f",a.V());
    SetDlgItemText(IDC_EDIT8, Baf);
    
}
 
void CBoxDlg::OnButton9() 
{
    Box a;
    char Baf[10];
 
    sprintf(Baf,"%2.2f",a.Z());
    SetDlgItemText(IDC_EDIT9, Baf);
 
    sprintf(Baf,"%2.2f",a.X());
    SetDlgItemText(IDC_EDIT10, Baf);
 
    sprintf(Baf,"%2.2f",a.C());
    SetDlgItemText(IDC_EDIT11, Baf);
}