GetLocalTime() 用于系统时区的时间，GetSystemTime() 用于 UTC.那些以 SYSTEMTIME 结构返回日期/时间，在那里它被解析为年、月等.如果你想要一个自纪元以来的秒数，请使用 SystemTimeToFileTime()或 GetSystemTimeAsFileTime().FILETIME 是一个 64 位值，自 UTC 时间 1601 年 1 月 1 日起间隔为 100ns.

GetLocalTime() for the time in the system timezone, GetSystemTime() for UTC. Those return the date/time in a SYSTEMTIME structure, where it's parsed into year, month, etc. If you want a seconds-since-epoch time, use SystemTimeToFileTime() or GetSystemTimeAsFileTime(). The FILETIME is a 64-bit value with the number of 100ns intervals since Jan 1, 1601 UTC.

对于间隔时间，使用GetTickCount().它返回自启动以来的毫秒数.

For interval taking, use GetTickCount(). It returns milliseconds since startup.

要以***分辨率(仅受硬件限制)获取间隔，请使用 QueryPerformanceCounter().

For taking intervals with the best possible resolution (limited by hardware only), use QueryPerformanceCounter().