Regarding Dialog Property Sheet on a CTabCtrl

BEGIN_MESSAGE_MAP(CYourDialog, CDialog)
  ON_NOTIFY(TCN_SELCHANGING, IDC_TAB1, OnSelchangingTab)
  ON_NOTIFY(TCN_SELCHANGE, IDC_TAB1, OnSelchangeTab)
END_MESSAGE_MAP()


BOOL CYourDialog::OnInitDialog()
{
  BOOL bResult(CDialog::OnInitDialog());

  m_cTabControl.ModifyStyleEx(0, WS_EX_CONTROLPARENT);

  m_cGeneralPage.Create(CPhaseGeneralPage::sm_uiResourceID, NULL);
  m_cGeneralPage.SetParent(&m_cTabControl);
  m_cGeneralPage.ModifyStyleEx(0, WS_EX_CONTROLPARENT);
  m_cTabControl.InsertItem(TCIF_TEXT|TCIF_PARAM,
                           0,
                           _T("first"),
                           (LPARAM) &m_cGeneralPage);

  m_cParameterPage.Create(CPhaseParameterPage::sm_uiResourceID, NULL);
  m_cParameterPage.SetParent(&m_cTabControl);
  m_cParameterPage.ModifyStyleEx(0, WS_EX_CONTROLPARENT);
  m_cTabControl.InsertItem(TCIF_TEXT|TCIF_PARAM,
                           1,
                           _T("second"),
                           0,
                           (LPARAM) &m_cParameterPage);

  m_cUserPage.Create(CPhaseUserPage::sm_uiResourceID, NULL);
  m_cUserPage.SetParent(&m_cTabControl);
  m_cUserPage.ModifyStyleEx(0, WS_EX_CONTROLPARENT);
  m_cTabControl.InsertItem(TCIF_TEXT|TCIF_PARAM,
                           2,
                           _T("third"),
                           0,
                           (LPARAM) &m_cUserPage);
  AdjustContent();
  ActivatePage(0, true);

  return bResult;
}

void CYourDialog::AdjustContent()
{
  m_cTabControl.GetClientRect(&cRect);
  cRect.DeflateRect(2, 22, 3, 2); // could be improved... :)

  int iCount(m_cTabControl.GetItemCount());
  while (iCount--) {
    TCITEM tcItem;
    tcItem.mask = TCIF_PARAM;
    if (m_cTabControl.GetItem(iCount, &tcItem)) {
      if (tcItem.lParam) {
        CDialog* pcPage = (CDialog*) tcItem.lParam;
        pcPage->MoveWindow(&cRect, FALSE);
      }
    }
  }
}

void CYourDialog::OnSelchangingTab(NMHDR* /*pNMHDR*/, LRESULT* pResult)
{
  ActivatePage(m_cTabControl.GetCurSel(), false);
  *pResult = 0;
}

void CPhaseEditDialog::OnSelchangeTab(NMHDR* /*pNMHDR*/, LRESULT* pResult)
{
  ActivatePage(m_cTabControl.GetCurSel(), true);
  *pResult = 0;
}

void CYourDialog::ActivatePage(int iPage, bool bActivate)
{
  TCITEM tcItem;
  tcItem.mask = TCIF_PARAM;
  if (m_cTabControl.GetItem(iPage, &tcItem)) {
    if (tcItem.lParam) {
      CDialog* pcPage = (CDialog*) tcItem.lParam;
      if (bActivate) {
        pcPage->UpdateData(FALSE);
        pcPage->ShowWindow(SW_SHOW);
        pcPage->SetFocus();
      } else {
        pcPage->UpdateData(TRUE);
        pcPage->ShowWindow(SW_HIDE);
      }
    }
  }
}