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

switch(nSBCode)
{
// case SB_BOTTOM://Scroll to bottom.
// case SB_ENDSCROLL://End scroll.
case SB_LINEDOWN://Scroll one line down.
  {
   RECT rc;
   LOGFONT logFont;
   CFont * pFont;

   GetClientRect(&rc);
   pFont = m_pComboBox->GetParent()->GetFont();
   pFont->GetLogFont(&logFont);
   ASSERT(logFont.lfHeight != 0);
   if(logFont.lfHeight < 0) logFont.lfHeight = -logFont.lfHeight;
   rc.left = (rc.bottom - rc.top) / logFont.lfHeight;

   int nPos = GetScrollPos(SB_VERT) + 1;
   if(nPos + rc.left <= m_aInfo.GetSize())
   {
    SetScrollPos(SB_VERT,nPos);
    Invalidate();
   }
  }
  break;
case SB_LINEUP://Scroll one line up.
  {
   int nPos = GetScrollPos(SB_VERT) - 1;
   if(nPos >= 0)
   {
    SetScrollPos(SB_VERT,nPos);
    Invalidate();
   }
  }
  break;
case SB_PAGEDOWN://Scroll one page down.
  {
   RECT rc;
   LOGFONT logFont;
   CFont * pFont;

   GetClientRect(&rc);
   pFont = m_pComboBox->GetParent()->GetFont();
   pFont->GetLogFont(&logFont);
   ASSERT(logFont.lfHeight != 0);
   if(logFont.lfHeight < 0) logFont.lfHeight = -logFont.lfHeight;

   rc.top = rc.bottom / logFont.lfHeight;
   int nPos = GetScrollPos(SB_VERT);
   if(nPos < m_aInfo.GetSize() - rc.top)
   {
    nPos += rc.top;
    if(nPos > m_aInfo.GetSize() - rc.top) nPos = m_aInfo.GetSize() - rc.top;
    SetScrollPos(SB_VERT,nPos);
    Invalidate();
   }
  }
  break;
case SB_PAGEUP://Scroll one page up.
  {
   RECT rc;
   LOGFONT logFont;
   CFont * pFont;

   GetClientRect(&rc);
   pFont = m_pComboBox->GetParent()->GetFont();
   pFont->GetLogFont(&logFont);
   ASSERT(logFont.lfHeight != 0);
   if(logFont.lfHeight < 0) logFont.lfHeight = -logFont.lfHeight;

   rc.top = rc.bottom / logFont.lfHeight;
   int nPos = GetScrollPos(SB_VERT);
   if(nPos > 0)
   {
    nPos -= rc.top;
    if(nPos < 0) nPos = 0;
    SetScrollPos(SB_VERT,nPos);
    Invalidate();
   }
&nb