* terminate the application
  *
  * \param     wID
  * \return    0
  *
  */
  //------------------------------------------------------------------------------
  LRESULT OnOK(WORD /*wNotifyCode*/, WORD wID, HWND /*hWndCtl*/, BOOL& /*bHandled*/)
  {
    // TODO: Add validation code 
    CloseDialog(wID);
    return 0;
  }
  // step 5 Add Message handler OnUpdate
  
  //------------------------------------------------------------------------------
  // LRESULT OnUpdate(WORD /*wNotifyCode*/, WORD /*wID*/, HWND /*hWndCtl*/, BOOL& /*bHandled*/) 
  // Author: 
  // Date: 30.08.2002
  //------------------------------------------------------------------------------
  /**
  * let the BcamTopologyViewCtl update itself
  *
  * \return  0  
  *
  */
  //------------------------------------------------------------------------------
  LRESULT OnUpdate(WORD /*wNotifyCode*/, WORD /*wID*/, HWND /*hWndCtl*/, BOOL& /*bHandled*/)
  {
	  // let the control update the device tree
    if (m_ptrToplogyView != NULL) m_ptrToplogyView->Update();
    return 0;
  }
  
  //------------------------------------------------------------------------------
  // void CloseDialog(int nVal) 
  // Author: 
  // Date: 30.08.2002
  //------------------------------------------------------------------------------
  /**
  * Closes the dialog and quits the application
  *
  * \param     nVal
  * \return    0
  *
  */
  //------------------------------------------------------------------------------
  void CloseDialog(int nVal)
  {
    DestroyWindow();
    ::PostQuitMessage(nVal);
  }
  
  //------------------------------------------------------------------------------
  // LRESULT OnClose(UINT /*uMsg*/, WPARAM wParam, LPARAM /*lParam*/, BOOL& bHandled) 
  // Author: 
  // Date: 30.08.2002
  //------------------------------------------------------------------------------
  /**
  * terminate the apllication
  *
  * \param     wParam
  * \param     bHandled
  * \return    0
  *
  */
  //------------------------------------------------------------------------------
  LRESULT OnClose(UINT /*uMsg*/, WPARAM wParam, LPARAM /*lParam*/, BOOL& bHandled)
  {
    DestroyWindow();
    ::PostQuitMessage(wParam);
    return 0;
  }
  // step 6 add a message handler OnSize
  //------------------------------------------------------------------------------
  // LRESULT OnSize(UINT /*uMsg*/, WPARAM /*wParam*/, LPARAM /*lParam*/, BOOL& bHandled) 
  // Author: 
  // Date: 30.08.2002
  //------------------------------------------------------------------------------
  /**
  * Resize the BcamTopolagyViewCtl and move the buttos, such that they are on the right side of the dialog window
  *
  * \param     bHandled
  * \return    0
  *
  */
  //------------------------------------------------------------------------------
  LRESULT OnSize(UINT /*uMsg*/, WPARAM /*wParam*/, LPARAM /*lParam*/, BOOL& bHandled)
  {
    if (!IsIconic() && (m_TopologyWnd != NULL)) 
    {
      
      RECT rect; GetWindowRect(&rect);
      long width = rect.right-rect.left;
      long height = rect.bottom - rect.top;
	  // Make sure that the TopologyViewClt and the buttons remain visible
	  // force a minimal width and height of 250 and 300
      if (width < 250 || height < 300)
      {
        if (width < 250) rect.right = rect.left + 250;
        if (height < 300) rect.bottom = rect.top + 300;
        ::MoveWindow(m_hWnd,rect.left,rect.top,rect.right- rect.left,rect.bottom-rect.top,TRUE);
      }
	  // resize the control and move the buttons
      MoveItems();
	  // force redrawing
      Invalidate();
    }
    
    return 0;
  }
  
  //------------------------------------------------------------------------------
  // LRESULT OnClickedResetbus(WORD /*wNotifyCode*/, WORD /*wID*/, HWND /*hWndCtl*/, BOOL& bHandled) 
  // Author: 
  // Date: 30.08.2002
  //------------------------------------------------------------------------------
  /**
  * let the BcamTopologyViewCtl generate a bus reset
  *
  * \param     bHandled
  * \return    0
  *
  */
  //------------------------------------------------------------------------------
  LRESULT OnClickedResetbus(WORD /*wNotifyCode*/, WORD /*wID*/, HWND /*hWndCtl*/, BOOL& bHandled)
  {
    if (m_ptrToplogyView != NULL) m_ptrToplogyView->ResetBus();
    return 0;
  }
  
  //------------------------------------------------------------------------------
  // LRESULT OnClickedDetails(WORD /*wNotifyCode*/, WORD /*wID*/, HWND /*hWndCtl*/, BOOL& bHandled) 
  // Author: 
  // Date: 30.08.2002
  //------------------------------------------------------------------------------
  /**
  * Set the Detailed state of the BcamTopologyViewCtl to the state of the checkbox
  *
  * \param     bHandled
  * \return    
  *
  */
  //------------------------------------------------------------------------------
  LRESULT OnClickedDetails(WORD /*wNotifyCode*/, WORD /*wID*/, HWND /*hWndCtl*/, BOOL& bHandled)
  {
    DDX_Check(IDC_DETAILS, m_CheckBoxDetails, fromDialog);
    if (m_ptrToplogyView != NULL) m_ptrToplogyView->Details = (m_CheckBoxDetails != 0);
    return 0;
  }
  
  //------------------------------------------------------------------------------
  // LRESULT OnClickedDetails(WORD /*wNotifyCode*/, WORD /*wID*/, HWND /*hWndCtl*/, BOOL& bHandled) 
  // Author: 
  // Date: 30.08.2002
  //------------------------------------------------------------------------------
  /**
  * Set the Detailed state of the BcamTopologyViewCtl to the state of the checkbox
  *
  * \param     bHandled
  * \return    
  *
  */
  //------------------------------------------------------------------------------
  LRESULT OnClickedStayTop(WORD /*wNotifyCode*/, WORD /*wID*/, HWND /*hWndCtl*/, BOOL& bHandled)
  {
    DDX_Check(IDC_STAY_TOP, m_CheckBoxStayTop, fromDialog);
	if (m_CheckBoxStayTop)
    ::SetWindowPos(m_hWnd,HWND_TOPMOST,0,0,0,0,  SWP_NOSIZE | SWP_NOMOVE );
	else
    ::SetWindowPos(m_hWnd,HWND_NOTOPMOST,0,0,0,0,  SWP_NOSIZE | SWP_NOMOVE );
    return 0;
  }

    //------------------------------------------------------------------------------
  // LRESULT OnClickedHelp(WORD /*wNotifyCode*/, WORD /*wID*/, HWND /*hWndCtl*/, BOOL& bHandled) 
  // Author: 
  // Date: 30.08.2002
  //------------------------------------------------------------------------------
  /**
  * Opens the BCAMTopologyViewer help topic
  *
  * \param     bHandled
  * \return    
  *
  */
  //------------------------------------------------------------------------------
  LRESULT OnClickedHelp(WORD /*wNotifyCode*/, WORD /*wID*/, HWND /*hWndCtl*/, BOOL& bHandled)
  {
HWND hwnd =
   HtmlHelp(
             GetDesktopWindow(),
             "..\\doc\\Bcam_Topology_Viewer_Help.chm",
             HH_DISPLAY_TOPIC,
             NULL) ;
if (hwnd == NULL) ::MessageBox(m_hWnd,"Help file not found","Error",MB_OK);
    return 0;
  }
    //------------------------------------------------------------------------------
  // LRESULT OnHelp(UINT i, WPARAM wParam, LPARAM lParam, BOOL& bHandled) 
  // Author: 
  // Date: 30.08.2002
  //------------------------------------------------------------------------------
  /**
  * Opens the BCAMTopologyViewer help topic
  *
  * \param     i			not used
  * \param     wParam		not used
  * \param     lParam       not used
  * \param     bHandled
  * \return    
  *
  */
  //------------------------------------------------------------------------------
  LRESULT OnHelp(UINT i, WPARAM wParam, LPARAM lParam, BOOL& bHandled)
  {   // cast the parameter to suit OnClickedHelp
	  return OnClickedHelp((WORD)i, (WORD)wParam, (HWND)lParam, bHandled);
  }

protected:
  // step 2 add member variables to hold the window handle and interface pointer
  HWND m_TopologyWnd; // the window handle of the topology view control
  IBcamTopologyViewCtlPtr m_ptrToplogyView; // the IBcamTopologyViewCtl interface of the control
  int m_CheckBoxDetails;                    // indicates whether to show details
  int m_CheckBoxStayTop;                    // indicates whether to show details
};


/////////////////////////////////////////////////////////////////////////////

//{{AFX_INSERT_LOCATION}}
// Microsoft Visual C++ will insert additional declarations immediately before the previous line.

#endif // !defined(AFX_MAINDLG_H__A70445E7_6325_4D08_851F_6C100428865A__INCLUDED_)