TM, Time_t,systemtime conversion

Source: Internet
Author: User

time_t tmtotime_t (char * DT)


TM Timeinfo;
sscanf_s (DT, "%d-%d-%d%d:%d:%d",
&timeinfo.tm_year, &timeinfo.tm_mon, &timeinfo.tm_mday,
&timeinfo.tm_hour, &timeinfo.tm_min, &timeinfo.tm_sec);
Timeinfo.tm_year-= 1900;
Timeinfo.tm_mon-= 1; Month:0-11
Return Mktime (&timeinfo);


time_t systemtimetotime_t (const systemtime& ST) {
TM Temptm = {st.wsecond,
St.whour, St.wday,
return Mktime (&TEMPTM);

SYSTEMTIME timettosystemtime (time_t t)
filetime ft;
//longlong NLL = int32x32to64 (t, 10000000) + 116444736000000000   Time difference 8 hours
Longlong NLL = int32x32to64 (T, 10 000000) + 116445024000000000;

Ft.dwlowdatetime = (DWORD) NLL;
Ft.dwhighdatetime = (DWORD) (NLL >> 32);
FileTimeToSystemTime (&ft, &pst);
return PST;

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