CString str ,strLine;
for(int i=0 ;i<10 ;i++)
{
     str.Format("ligne numéro :%d \r\n" ,i) ;
     strLine+=str ;
}
GetDlgItem(IDC_EDIT1)->SetWindowText(strLine);

BEGIN_MESSAGE_MAP(CTestMdiView, CFormView)
//{{AFX_MSG_MAP(CTestMdiView)
ON_EN_SETFOCUS(IDC_EDIT1, OnSetfocusEdit1)
//}}AFX_MSG_MAP
END_MESSAGE_MAP()
//-----------------------------------------------------------------------------
void CTestMdiView::OnSetfocusEdit1() 
{
     // TODO: Add your control notification handler code here
     GetDlgItem(IDC_EDIT1)->PostMessage(EM_SETSEL,0,-1);
}

/////////////////////////////////////////////////////////////////////////////
// CMyEdit

CMyEdit::CMyEdit(){}
CMyEdit::~CMyEdit(){}
BEGIN_MESSAGE_MAP(CMyEdit, CEdit)
//{{AFX_MSG_MAP(CMyEdit)
ON_CONTROL_REFLECT(EN_SETFOCUS, OnSetfocus)
//}}AFX_MSG_MAP
END_MESSAGE_MAP()

void CMyEdit::OnSetfocus() 
{
     // TODO: Add your control notification handler code here
      PostMessage(EM_SETSEL,0,-1);
}

// CMyEdit
CMyEdit::CMyEdit()
{
}
CMyEdit::~CMyEdit()
{
}
BEGIN_MESSAGE_MAP(CMyEdit, CEdit)
//{{AFX_MSG_MAP(CMyEdit)
ON_WM_CHAR()
//}}AFX_MSG_MAP
END_MESSAGE_MAP()

/////////////////////////////////////////////////////////////////////////////
// CMyEdit message handlers

void CMyEdit::OnChar(UINT nChar, UINT nRepCnt, UINT nFlags) 
{
// TODO: Add your message handler code here and/or call default
if(nChar=='a') return;
CEdit::OnChar(nChar, nRepCnt, nFlags);
}

BOOL CMyForm::OnCommand(WPARAM wParam, LPARAM lParam) 
{
// TODO: Add your specialized code here and/or call the base class
    CWnd *pWnd = GetFocus();
    switch(wParam)
    {
      case IDOK: if(pWnd!=GetDlgItem(IDOK))
                 {
                      reinterpret_cast<CDialog *>(this)->NextDlgCtrl();
                      return FALSE;
                 }
                 break;

      case IDCANCEL:if(pWnd!=GetDlgItem(IDCANCEL))
                    {
                        return FALSE;
                    }
                    break;
    }
    return CFormView::OnCommand(wParam, lParam);
}

pEdit->PostMessage(WM_KEYDOWN,VK_END,0);
pEdit->SetFocus(); // eventuellement 

   int n=pEdit->GetWindowTextLength()-1;
pEdit->SetSel(n,n,TRUE);
pEdit->PostMessage(WM_KEYDOWN,VK_END,0);
pEdit->SetFocus(); // eventuellement 

HBRUSH CMyEdit::CtlColor(CDC* pDC, UINT nCtlColor) 
{
// TODO: Change any attributes of the DC here
    //déclarer dans la classe produite un pointeur sur une CBrush 
    // CBrush*   m_pBrushReadOnly=NULL; // le mettre à null dans le constructeur
    // dans le destructeur delete m_pBrushReadOnly

    if((GetStyle() & ES_READONLY))
    {  
        if(!m_pBrushReadOnly) m_pBrushReadOnly = new CBrush(RGB(255,255,255));
        pDC->SetBkColor(RGB(255,255,255));
        return (HBRUSH)m_pBrushReadOnly->GetSafeHandle();
    }
// TODO: Return a non-NULL brush if the parent's handler should not be called
return NULL;
}

BOOL CMyEdit::PreTranslateMessage(MSG* pMsg)
{
    // TODO : ajoutez ici votre code spécialisé et/ou l'appel de la classe de base
    if(pMsg->message == WM_KEYDOWN && pMsg->wParam == VK_RETURN)
    {
        TRACE("\nReturn intercepté");
    }
    return CEdit::PreTranslateMessage(pMsg);
}

void CMyEdit::OnChar(UINT nChar, UINT nRepCnt, UINT nFlags) 
{
// TODO: Add your message handler code here and/or call default
    if(nChar=='a')
    {
        PostMessage(WM_CHAR,'A');
        return;
    }
   CEdit::OnChar(nChar, nRepCnt, nFlags);
}

   CTime monTemps = CTime::GetCurrentTime();
   CString resultat;
   resultat.Format("%d:%d:%d\r\n",monTemps.GetHour(),monTemps.GetMinute(),monTemps.GetSecond());
   int longueur = m_monEdit.GetWindowTextLength();
   m_monEdit.SetSel(longueur,longueur);
   m_monEdit.ReplaceSel(resultat);

CWnd::ModifyStyle
BOOL ModifyStyle( DWORD dwRemove, DWORD dwAdd, UINT nFlags = 0 );

GetDlgItem(IDC_EDIT1)->ModifyStyle(0,WS_HSCROLL |WS_VSCROLL,SWP_DRAWFRAME);

GetDlgItem(IDC_EDIT1)->ModifyStyle(WS_HSCROLL |WS_VSCROLL,0,SWP_DRAWFRAME);

keybd_event(VK_CONTROL,0x9d,0 , 0); // Ctrl Press 
keybd_event(VK_END,0,0,0); 
keybd_event(VK_END,0,KEYEVENTF_KEYUP,0); 
keybd_event(VK_CONTROL,0x9d,KEYEVENTF_KEYUP,0); // Ctrl Release   

m_edit_test.ModifyStyle(ES_RIGHT | ES_CENTER ,ES_LEFT);

void ModifyEditStyle(CEdit &rEdit,DWORD dwRemove,DWORD dwAdd)
{
   rEdit.ModifyStyle(dwRemove,dwAdd);   

   UINT nID=rEdit.GetDlgCtrlID();
   CRect rect;

   rEdit.GetWindowRect(&rect);
   CWnd *pParent=rEdit.GetParent();
   pParent->ScreenToClient(&rect);


   DWORD dwExEditStyle =rEdit.GetExStyle( );
   DWORD dwEditStyle =rEdit.GetStyle( );

   CString str;
   rEdit.GetWindowText(str);
   
   HWND hwnd=::CreateWindowEx(
            dwExEditStyle,
                TEXT("EDIT"),            // Class name
                str,                  // Window text
                dwEditStyle,            // Window style
                rect.left,               // x coordinate of the upper-left corner
                rect.top,               // y coordinate of the upper-left corner
                rect.Width(),            // Width of the edit control window
                rect.Height(),            // Height of the edit control window
                pParent->GetSafeHwnd(),            // Window handle of parent window
                (HMENU)(nID),            // Control identifier
                AfxGetInstanceHandle(),     // Instance handle
                NULL);                  // Specify NULL for this parameter when
                                 // creating a control
   
   ::SendMessage(hwnd, WM_SETFONT, (WPARAM)::SendMessage(rEdit.GetSafeHwnd(), WM_GETFONT, 0, 0),TRUE);   
   
   rEdit.DestroyWindow();
   rEdit.SubclassWindow(hwnd);
}
//................
void CessaiOCX1View::OnBnClickedButtonAlignDrotie()
{
   ModifyEditStyle( m_edit_test, ES_LEFT | ES_CENTER , ES_RIGHT);
}