SYSTEMTIME

The SYSTEMTIME structure represents a date and time using individual members for the month, day, year, weekday, hour, minute, second, and millisecond.

typedef struct _SYSTEMTIME { // st

WORD wYear;

WORD wMonth;

WORD wDayOfWeek;

WORD wDay;

WORD wHour;

WORD wMinute;

WORD wSecond;

WORD wMilliseconds;

} SYSTEMTIME;

Members

wYear

Specifies the current year.

wMonth

Specifies the current month; January = 1, February = 2, and so on.

wDayOfWeek

Specifies the current day of the week; Sunday = 0, Monday = 1, and so on.

wDay

Specifies the current day of the month.

wHour

Specifies the current hour.

wMinute

Specifies the current minute.

wSecond

Specifies the current second.

wMilliseconds

Specifies the current millisecond.

Remarks

It is not recommended that you add and subtract values from the SYSTEMTIME structure to obtain relative times. Instead, you should

• Convert the SYSTEMTIME structure to a FILETIME structure.

• Copy the resulting FILETIME structure to a LARGE_INTEGER structure.

• Use normal 64-bit arithmetic on the LARGE_INTEGER value.

See Also

FILETIME, GetSystemTime, LARGE_INTEGER, SetSystemTime

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