从Windows的系统时钟获取当前时间（以毫秒为单位）？ [英] Getting the current time (in milliseconds) from the system clock in Windows?

问题描述

如何在C ++中获取系统时钟的当前时间（以毫秒为单位）？这是一个Windows特定的应用程序。

How can you obtain the system clock's current time of day (in milliseconds) in C++? This is a windows specific app.

推荐答案

要获取以UTC表示的时间，请使用 GetSystemTime 。

To get the time expressed as UTC, use GetSystemTime in the Win32 API.

SYSTEMTIME st;
GetSystemTime(&st);

SYSTEMTIME 记录为具有这些相关成员：

SYSTEMTIME is documented as having these relevant members:

WORD wYear;
WORD wMonth;
WORD wDayOfWeek;
WORD wDay;
WORD wHour;
WORD wMinute;
WORD wSecond;
WORD wMilliseconds;

如shf301在下面有帮助的指出， GetLocalTime （具有相同的原型）将产生一个时间更正到用户的目前的时区。

As shf301 helpfully points out below, GetLocalTime (with the same prototype) will yield a time corrected to the user's current timezone.

这里有几个好的答案，取决于你以后。如果你正在寻找时间，我的答案是最好的方法 - 如果你需要固体日期的算术，考虑亚历克斯。在Windows上有许多方法来修复时间猫，其中一些比其他更准确（没有人提到 QueryPerformanceCounter ）。

You have a few good answers here, depending on what you're after. If you're looking for just time of day, my answer is the best approach -- if you need solid dates for arithmetic, consider Alex's. There's a lot of ways to skin the time cat on Windows, and some of them are more accurate than others (and nobody has mentioned QueryPerformanceCounter yet).

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