📄 multi_timerdlg.cpp

📁 VC中基于 Windows 的精确定时
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			End_time = COleDateTime::GetCurrentTime()-Start_time;  
		}
	}
	return 0;
}

void CMulti_TimerDlg::OnUpdateTime1()
{
	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);
}

void CMulti_TimerDlg::OnButtonTime4() 
{
	SetDlgItemInt(IDC_EDIT3,0,true);
	DWORD dwStart = GetTickCount();
	DWORD dwEnd = dwStart;
	do
	{  
		MSG  msg;  
		GetMessage(&msg,NULL,0,0);  
		TranslateMessage(&msg); 
		DispatchMessage(&msg);
		//以上四行是实现在延时或定时期间能处理其他的消息，虽然这样可以降低CPU的占有率，
		//但降低了延时或定时精度，实际应用中可以去掉,去掉后误差降低。
		dwEnd = GetTickCount()- dwStart;  
	} while(dwEnd <50);
	SetDlgItemInt(IDC_EDIT3,(dwEnd-50),true);
	MessageBox("50ms延时已到,其误差为文本框中的值!");
	
}

void CMulti_TimerDlg::OnButtonTime41() 
{
	AfxBeginThread(ShowTime4_1_Proc,this);//开启定时器
}

UINT ShowTime4_1_Proc(LPVOID lParam)
{
	CMulti_TimerDlg* pDlg = (CMulti_TimerDlg*)lParam;
	DWORD dwStart, dwStop;
	dwStop = GetTickCount();// 起始值和终止值
	while(TRUE)
	{
		dwStart = dwStop;// 上一次的终止值变成新的起始值
		::SendMessage(pDlg->m_hWnd,WM_UPDATETIME2,0,0);//发送消息通知对话框该更新时间了
		do
		{
			dwStop = GetTickCount();
		}while(dwStop-10<dwStart);
	}
	return 0;
}

void CMulti_TimerDlg::OnUpdateTime2()
{
	struct _timeb timebuffer;
	char *timeline;
	//获得毫秒级的时间
	_ftime( &timebuffer );
	timeline = ctime(&(timebuffer.time));
	//格式化时间
	CString m_Str;
	m_Str.Format("%.19s.%hu %s", timeline, timebuffer.millitm, &timeline[20]);
	SetDlgItemText(IDC_EDIT3,m_Str);
}

void CMulti_TimerDlg::OnButtonTime5() 
{
	SetDlgItemInt(IDC_EDIT4,0,true);
	DWORD dwStart = timeGetTime();
	DWORD dwEnd = dwStart;
	do
	{  
		dwEnd = timeGetTime()- dwStart;  
	} while(dwEnd <120);
	SetDlgItemInt(IDC_EDIT4,(dwEnd-120),true);
	MessageBox("120ms延时已到,其误差为文本框中的值!");
}

void CMulti_TimerDlg::OnButtonTime51() 
{
	AfxBeginThread(ShowTime5_1_Proc,this);//开启定时器
}

UINT ShowTime5_1_Proc(LPVOID lParam)
{
	CMulti_TimerDlg* pDlg = (CMulti_TimerDlg*)lParam;
	DWORD dwStart, dwStop;
	dwStop = timeGetTime();// 起始值和终止值
	while(TRUE)
	{
		dwStart = dwStop;// 上一次的终止值变成新的起始值
		::SendMessage(pDlg->m_hWnd,WM_UPDATETIME3,0,0);//发送消息通知对话框该更新时间了
		do
		{
			dwStop = timeGetTime();
		}while(dwStop-10<dwStart);
	}
	return 0;
}

void CMulti_TimerDlg::OnUpdateTime3()
{
	struct _timeb timebuffer;
	char *timeline;
	//获得毫秒级的时间
	_ftime( &timebuffer );
	timeline = ctime(&(timebuffer.time));
	//格式化时间
	CString m_Str;
	m_Str.Format("%.19s.%hu %s", timeline, timebuffer.millitm, &timeline[20]);
	SetDlgItemText(IDC_EDIT4,m_Str);
}


void CMulti_TimerDlg::OnButtonTime6() 
{
	TimerID_1ms = timeSetEvent(wTimerRes_1ms, wAccuracy,
		(LPTIMECALLBACK) OneMilliSecondProc,
		(DWORD)this,TIME_ONESHOT);
}

void PASCAL OneMilliSecondProc(UINT wTimerID, UINT msg,DWORD dwUser,DWORD dwl,DWORD dw2) 
{
	CMulti_TimerDlg *timer =(CMulti_TimerDlg *)dwUser;
    timer->SendMessage(WM_UPDATETIME4,0,0);
   //timeKillEvent(TimerID_1ms); 
   //AfxMessageBox("在此回调函数中安排需要执行的任务");
}

void CMulti_TimerDlg::OnUpdateTime4()
{
	struct _timeb timebuffer;
	char *timeline;
	//获得毫秒级的时间
	_ftime( &timebuffer );
	timeline = ctime(&(timebuffer.time));
	//格式化时间
	CString m_Str;
	m_Str.Format("%.19s.%hu %s", timeline, timebuffer.millitm, &timeline[20]);
	SetDlgItemText(IDC_EDIT5,m_Str);
}

void CMulti_TimerDlg::OnButtonTime61() 
{
	TimerID1_1ms = timeSetEvent(wTimerRes_1ms, wAccuracy,
		(LPTIMECALLBACK) OneMilliSecondProc1,
		(DWORD)this,TIME_PERIODIC);
}

void PASCAL OneMilliSecondProc1(UINT wTimerID, UINT msg,DWORD dwUser,DWORD dwl,DWORD dw2) 
{
    CMulti_TimerDlg *timer =(CMulti_TimerDlg *)dwUser;
    timer->SendMessage(WM_UPDATETIME5,0,0);
 //       timeKillEvent(TimerID1_1ms); 
//	    AfxMessageBox("在此回调函数中安排需要周期性执行的任务");
}

void CMulti_TimerDlg::OnUpdateTime5()
{
	struct _timeb timebuffer;
	char *timeline;
	//获得毫秒级的时间
	_ftime( &timebuffer );
	timeline = ctime(&(timebuffer.time));
	//格式化时间
	CString m_Str;
	m_Str.Format("%.19s.%hu %s", timeline, timebuffer.millitm, &timeline[20]);
	SetDlgItemText(IDC_EDIT5,m_Str);
}

void CMulti_TimerDlg::OnButtonTime7() 
{
	LARGE_INTEGER  litmp; 
	LONGLONG       QPart1,QPart2;;
	double         dfMinus, dfFreq, dfTim; 
	QueryPerformanceFrequency(&litmp); 
	dfFreq = (double)litmp.QuadPart; // 获得计数器的时钟频率
	QueryPerformanceCounter(&litmp); 
	QPart1 = litmp.QuadPart; // 获得初始值
	do{
		QueryPerformanceCounter(&litmp); 
		QPart2 = litmp.QuadPart;// 获得中止值 
		dfMinus = (double)(QPart2-QPart1); 
		dfTim = dfMinus / dfFreq; // 获得对应的时间值，单位为秒
	}while(dfTim<0.001);
	CString  str1;
	str1.Format("%.12f",(dfTim-0.001)*1000);
	SetDlgItemText(IDC_EDIT6,str1);
	MessageBox("1ms延时已到,其误差为文本框中的值,单位为ms!");
}

void CMulti_TimerDlg::OnButtonTime71() 
{
	LARGE_INTEGER  litmp; 
	LONGLONG       QPart1,QPart2;;
	double         dfMinus, dfFreq, dfTim; 
	QueryPerformanceFrequency(&litmp); 
	dfFreq = (double)litmp.QuadPart; // 获得计数器的时钟频率
	QueryPerformanceCounter(&litmp); 
	QPart1 = litmp.QuadPart; // 获得初始值
	do{
		QueryPerformanceCounter(&litmp); 
		QPart2 = litmp.QuadPart;// 获得中止值 
		dfMinus = (double)(QPart2-QPart1); 
		dfTim = dfMinus / dfFreq; // 获得对应的时间值，单位为秒
	}while(dfTim<0.000001);
	CString  str1;
	str1.Format("%.12f",(dfTim-0.000001)*1000000);
	SetDlgItemText(IDC_EDIT6,str1);
	MessageBox("1微妙延时已到,其误差为文本框中的值,单位为微妙!");
}

void CMulti_TimerDlg::OnButtonTime72() 
{
	LARGE_INTEGER litmp; 
    LONGLONG QPart1,QPart2; 
    double dfMinus, dfFreq, dfTim; 
    QueryPerformanceFrequency(&litmp); 
	QueryPerformanceFrequency(&litmp); 
	dfFreq = (double)litmp.QuadPart; // 获得计数器的时钟频率
	QueryPerformanceCounter(&litmp); 
	QPart1 = litmp.QuadPart; // 获得初始值
    Sleep(100); 
	QueryPerformanceCounter(&litmp); 
	QPart2 = litmp.QuadPart;// 获得中止值 
	dfMinus = (double)(QPart2-QPart1); 
	dfTim = dfMinus / dfFreq; // 获得对应的时间值，单位为秒
	CString  str2;
	str2.Format("%.12f",(dfTim*1000-100));
	SetDlgItemText(IDC_EDIT7,str2);
	MessageBox("由于Sleep()函数自身的误差，程序每次执行的结果都会有微小误差,其误差为文本框中的值,单位为ms!");
}

void CMulti_TimerDlg::OnButtonTime73() 
{
	AfxBeginThread(ShowTime6_1_Proc,this);//开启定时器
}

UINT ShowTime6_1_Proc(LPVOID lParam)
{
	CMulti_TimerDlg* pDlg = (CMulti_TimerDlg*)lParam;
	LARGE_INTEGER  litmp; 
	LONGLONG       QPart1,QPart2;;
	double         dfMinus, dfFreq, dfTim; 
	QueryPerformanceFrequency(&litmp); 
	dfFreq = (double)litmp.QuadPart; // 获得计数器的时钟频率
	QueryPerformanceCounter(&litmp); 
	QPart1 = litmp.QuadPart; // 获得初始值
	QPart2=QPart1;
	
	while(TRUE)
	{
		QPart1 = QPart2;// 上一次的终止值变成新的起始值
		::SendMessage(pDlg->m_hWnd,WM_UPDATETIME6,0,0);//发送消息通知对话框该更新时间了
		do{
			QueryPerformanceCounter(&litmp); 
			QPart2 = litmp.QuadPart;// 获得中止值 
			dfMinus = (double)(QPart2-QPart1); 
			dfTim = dfMinus / dfFreq; // 获得对应的时间值，单位为秒
		}while(dfTim<0.000001);
	}
	return 0;
}

void CMulti_TimerDlg::OnUpdateTime6()
{
	struct _timeb timebuffer;
	char *timeline;
	//获得毫秒级的时间
	_ftime( &timebuffer );
	timeline = ctime(&(timebuffer.time));
	//格式化时间
	CString m_Str;
	m_Str.Format("%.19s.%hu %s", timeline, timebuffer.millitm, &timeline[20]);
	SetDlgItemText(IDC_EDIT8,m_Str);
}

void CMulti_TimerDlg::OnAbout() 
{
	CAboutDlg dlg;
	dlg.DoModal();
}
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