sp; }
  break;
// case SB_THUMBPOSITION://Scroll to the absolute position. The current position is provided in nPos.
case SB_THUMBTRACK://Drag scroll box to specified position. The current position is provided in nPos.
  {
   SetScrollPos(SB_VERT,nPos);
   Invalidate();
  }
  break;
// case SB_TOP://Scroll to top   
}

CWnd::OnVScroll(nSBCode, nPos, pScrollBar);
}

void CACComboBox::HandleCompletion()
{
// Make sure we can ''talk'' to the edit control
if( m_pEdit == NULL )   
{
  m_pEdit = new CEdit();
  m_pEdit->SubclassWindow(GetDlgItem(1001)->GetSafeHwnd());
}

// Save the state of the edit control
CString text,bestText;
CInfoForACComboBox info;
int n = GetCount();

m_wndList.RemoveAll();
m_pEdit->GetWindowText(text);
CPoint ptCaret = m_pEdit->GetCaretPos();

// int start,end;
// m_pEdit->GetSel(start,end);

// Perform actual completion
int bestindex = -1;
int bestfrom  = INT_MAX;
int from;
for ( int x = 0; x < n; x++ )
{
  GetLBText(x,info.strDepict);
  info.nid = x;

  from = info.strDepict.Find(text);

  if(from != -1)
  {
   m_wndList.Add(info);
   if( from != -1 && from < bestfrom )
   {
    bestindex = x;
    bestText = info.strDepict;
    bestfrom = from;
   }
  }
}

if ( bestindex != -1)
{
  // Restore the edit control
  m_pEdit->SetWindowText(bestText);
  m_pEdit->SetSel(text.GetLength(),bestText.GetLength());
  m_pEdit->SetCaretPos(ptCaret);
}
if(m_wndList.GetSize() != 0)
{
  m_wndList.ShowList();
  m_wndList.Invalidate();
}
else
{
  m_wndList.ShowWindow(SW_HIDE);
}
}

BOOL CACComboBox::OnCommand(WPARAM wParam, LPARAM lParam)
{
if(HIWORD(wParam) == EN_CHANGE)
{
  HandleCompletion();
  return TRUE;
}
   
return CComboBox::OnCommand(wParam, lParam);
}

void CACComboBox::PreSubclassWindow()
{
CComboBox::PreSubclassWindow();

m_wndList.Create(this);
}

void CACComboBox::OnKillfocus()
{
m_wndList.OnKillFocus(GetFocus());
}

void CACComboBox::OnSelchange()
{
m_wndList.ShowWindow(SW_HIDE);
}