vc++ 时间差统计

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于 2024-03-01 15:54:56 发布

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文章标签： c++ 开发语言

本文链接：https://blog.youkuaiyun.com/zhang3747782/article/details/136398895

版权

该代码片段展示了如何在C++中使用CTime类获取当前时间和睡眠一段时间后，计算两个时间点之间的间隔，并以易于理解的格式显示出来。

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void CTimeDefDlg::OnBnClickedButton1()
{

	CTime cts = CTime::GetCurrentTime();
	Sleep(1000);
	CTimeSpan span = CTime::GetCurrentTime() - cts;

	CString csMsg;
	csMsg = span.Format(_T("%H:%M:%S"));
	MessageBox(csMsg);

}


void CTimeDefDlg::OnBnClickedButton2()
{
	SYSTEMTIME tmStart, tmEnd, tmSpan;
	GetLocalTime(&tmStart);

	Sleep(103);
	GetLocalTime(&tmEnd);


	if (tmEnd.wMilliseconds >= tmStart.wMilliseconds)
		tmSpan.wMilliseconds = tmEnd.wMilliseconds - tmStart.wMilliseconds;
	else
	{
		tmSpan.wMilliseconds = tmEnd.wMilliseconds - tmStart.wMilliseconds + 1000;
		-- tmEnd.wSecond;
	}

	if (tmEnd.wSecond >= tmStart.wSecond)
		tmSpan.wSecond = tmEnd.wSecond - tmStart.wSecond;
	else
	{
		tmSpan.wSecond = tmEnd.wSecond - tmStart.wSecond + 60;
		--tmEnd.wMinute;
	}
	if (tmEnd.wMinute >= tmStart.wMinute)
		tmSpan.wMinute = tmEnd.wMinute - tmStart.wMinute;
	else
	{
		tmSpan.wMinute = tmEnd.wMinute - tmStart.wMinute + 60;
		--tmEnd.wHour;
	}
	if (tmEnd.wHour >= tmStart.wHour)
		tmSpan.wHour = tmEnd.wHour - tmStart.wHour;
	else
	{
		tmSpan.wHour = tmEnd.wHour - tmStart.wHour + 60;
		--tmEnd.wDay;
	}

	CTime ctmStart(tmStart.wYear, tmStart.wMonth, tmStart.wDay, 0, 0, 0);
	CTime ctmEnd(tmEnd.wYear, tmEnd.wMonth, tmEnd.wDay, 0, 0, 0);
	CTimeSpan ctmSpan = ctmEnd - ctmStart;
	tmSpan.wDay = ctmSpan.GetDays();

	CString csMsg;
	csMsg.Format(_T("%d天 %02d:%02d:%02d %03d"), tmSpan.wDay, tmSpan.wHour
						,tmSpan.wMinute, tmSpan.wSecond,  tmSpan.wMilliseconds);
	MessageBox(csMsg);

}