timer3˵

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1:利用COleDateTime类和COleDateTimeSpan类来实现秒级延时：
   在程序需要延时的地方添加如下代码即可：
void CMulti_TimerDlg::OnButtonTime3() 
{
        COleDateTime  start_time  =  COleDateTime::GetCurrentTime();  
	COleDateTimeSpan  end_time  =          COleDateTime::GetCurrentTime()-start_time;  
	while(end_time.GetTotalSeconds() < 2) //实现延时2秒 
	{  
	   end_time  =  COleDateTime::GetCurrentTime()-start_time;  
	}
}


2: 利用COleDateTime类和COleDateTimeSpan类来实现秒级定时器：
  a：在头文件中自定义定时器时间到响应消息 #define WM_UPDATETIME1   WM_USER+1000
  b：在头文件中声明WM_UPDATETIME1   消息的响应函数OnUpdateTime1()
 
 //{{AFX_MSG(CMulti_TimerDlg)
	virtual BOOL OnInitDialog();
	afx_msg void OnSysCommand(UINT nID, LPARAM lParam);
	afx_msg void OnPaint();
	afx_msg HCURSOR OnQueryDragIcon();
	afx_msg void OnButtonTime1();
	afx_msg void OnTimer(UINT nIDEvent);
	afx_msg void OnButtonTime2();
	afx_msg void OnButtonTime3();
	afx_msg void OnButtonTime4();
	afx_msg void OnButtonTime31();
	afx_msg void OnButtonTime41();
	afx_msg void OnButtonTime5();
	afx_msg void OnButtonTime51();
	afx_msg void OnButtonTime6();
	afx_msg void OnButtonTime7();
	afx_msg void OnButtonTime71();
	afx_msg void OnButtonTime72();
	afx_msg void OnButtonTime73();
	afx_msg void OnAbout();
	afx_msg void OnButtonTime61();
	//}}AFX_MSG
	void OnUpdateTime1();
	DECLARE_MESSAGE_MAP()
  c：在*.cpp文件中映射WM_UPDATETIME1 消息，并定义响应函数，其代码如下：
   
    BEGIN_MESSAGE_MAP(CMulti_TimerDlg, CDialog)
	//{{AFX_MSG_MAP(CMulti_TimerDlg)
	ON_WM_SYSCOMMAND()
	ON_WM_PAINT()
	ON_WM_QUERYDRAGICON()
	ON_BN_CLICKED(IDC_BUTTON_TIME1, OnButtonTime1)
	ON_WM_TIMER()
	ON_BN_CLICKED(IDC_BUTTON_TIME2, OnButtonTime2)
	ON_BN_CLICKED(IDC_BUTTON_TIME3, OnButtonTime3)
	ON_BN_CLICKED(IDC_BUTTON_TIME4, OnButtonTime4)
	ON_BN_CLICKED(IDC_BUTTON_TIME3_1, OnButtonTime31)
	ON_BN_CLICKED(IDC_BUTTON_TIME4_1, OnButtonTime41)
	ON_BN_CLICKED(IDC_BUTTON_TIME5, OnButtonTime5)
	ON_BN_CLICKED(IDC_BUTTON_TIME5_1, OnButtonTime51)
	ON_BN_CLICKED(IDC_BUTTON_TIME6, OnButtonTime6)
	ON_BN_CLICKED(IDC_BUTTON_TIME7, OnButtonTime7)
	ON_BN_CLICKED(IDC_BUTTON_TIME7_1, OnButtonTime71)
	ON_BN_CLICKED(IDC_BUTTON_TIME7_2, OnButtonTime72)
	ON_BN_CLICKED(IDC_BUTTON_TIME7_3, OnButtonTime73)
	ON_BN_CLICKED(IDC_ABOUT, OnAbout)
	ON_BN_CLICKED(IDC_BUTTON_TIME6_1, OnButtonTime61)
	//}}AFX_MSG_MAP
	ON_MESSAGE(WM_UPDATETIME1,OnUpdateTime1)
   END_MESSAGE_MAP()

   void CMulti_TimerDlg::OnUpdateTime1()//即添加定时时间到的处理操作
   {
	struct _timeb timebuffer;
	char *timeline;
	//获得毫秒级的时间
	_ftime( &timebuffer );
	timeline = ctime(&(timebuffer.time));
	//格式化时间
	m_strTime.Format("当前时间是：%.19s %s", timeline, &timeline[20]);
	UpdateData(FALSE);
  }

 d：在*.cpp文件中定义一个线程函数，用来做定时器：

  UINT ShowTime3_1_Proc(LPVOID lParam);	//声明定时器函数

  UINT ShowTime3_1_Proc(LPVOID lParam)
  {
	CMulti_TimerDlg* pDlg = (CMulti_TimerDlg*)lParam;
	while(true)
	{
		COleDateTime      Start_time  =  COleDateTime::GetCurrentTime();  
	COleDateTimeSpan  End_time  = COleDateTime::GetCurrentTime()-Start_time;                 		
		::SendMessage(pDlg->m_hWnd,WM_UPDATETIME1,0,0);
		
		while(End_time.GetTotalSeconds()<1) //实现延时1秒 
		{  
			End_time = COleDateTime::GetCurrentTime()-Start_time;  
		}
	}
	return 0;
   }
   
  e:在需要的地方开启定时器：
   void CMulti_TimerDlg::OnButtonTime31() 
   {
	AfxBeginThread(ShowTime3_1_Proc,this);//开启定时器
   }