C / C++ / MFC

class CDlgView : public CView
{
  ...

  /** currently visible dialog. 
      CEmbeddedDlg defines virtual methods Fill and Store. 
      The embedded dialogs are derived from it.
  */
  CEmbeddedDlg* m_curdlg;
  
  CEmbeddedDlg* m_emptydlg;
  CTableDlg* m_tabledlg;
  CProtocolDlg* m_protocoldlg;

  CDataView* m_dataview;

  ...

  void ShowDlg(IXMLDOMElementPtr node);

  ...
};

void CDlgView::OnSize(UINT nType, int cx, int cy) 
{
  CView::OnSize(nType, cx, cy);
  m_emptydlg->SetWindowPos(NULL,0,0,cx,cy, SWP_NOMOVE | SWP_NOZORDER);
  m_tabledlg->SetWindowPos(NULL,0,0,cx,cy, SWP_NOMOVE | SWP_NOZORDER);
  m_protocoldlg->SetWindowPos(NULL,0,0,cx,cy, SWP_NOMOVE | SWP_NOZORDER);
}

int CDlgView::OnCreate(LPCREATESTRUCT lpCreateStruct) 
{
	if (CView::OnCreate(lpCreateStruct) == -1)
		return -1;
	
	m_emptydlg = new CEmbeddedDlg();
	m_emptydlg->Create(IDD_EMPTY,this);

	m_curdlg = m_emptydlg;
	m_emptydlg->ShowWindow(SW_SHOWNORMAL);

	m_tabledlg = new CTableDlg();
	m_tabledlg->Create(IDD_TABLE,this);
	
	m_protocoldlg = new CProtocolDlg();
	m_protocoldlg->Create(IDD_PROTOCOL,this);

	return 0;
}

void CDlgView::ShowDlg(IXMLDOMElementPtr node)
{
  m_curdlg->ShowWindow(SW_HIDE);
  if(node==NULL) m_curdlg = m_emptydlg;
  else
  {
    _bstr_t name = node->nodeName;
    if(name == _bstr_t("table")) m_curdlg = m_tabledlg;
    else if(name == _bstr_t("protocol")) m_curdlg = m_protocoldlg;
    else m_curdlg = m_emptydlg;
  }
  m_curdlg->ShowWindow(SW_SHOWNORMAL);
  m_curdlg->Fill(node);
}

 // in the message map section
 ON_COMMAND(ID_EDIT_PASTE, OnEditPaste)
...
void CMainFrame::OnEditPaste() 
{
 // here you do your clipboard operations.	
}

 int gnMyCtrlID = ID_WHATEVER; // get an initial value
... some code

if (this->m_cedParametritzacio.GetSafeHwnd() == NULL)
{
// find free id
while(::GetDlgItem(this, gnMyCtrlID))
    gnMyCtrlID++;

    this->m_cedParametritzacio.Create(WS_CHILD | ES_AUTOHSCROLL,r,this, gnMyCtrlID);
}