初始化隐藏对话框程序

    // 添加处理WM_WINDOWPOSCHANGING消息  
    void CXXDlg::OnWindowPosChanging(WINDOWPOS FAR* lpwndpos)   
    {  
        lpwndpos->flags &= ~SWP_SHOWWINDOW; // 去掉SWP_SHOWWINDOW标记  
      
        CDialog::OnWindowPosChanging(lpwndpos);  
          
        // TODO: Add your message handler code here   
    }