TM, Time_t,systemtime conversion

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.wminute,
St.whour, St.wday,
St.wmonth-1,
st.wyear-1900,
St.wdayofweek,
0,
0};
return Mktime (&TEMPTM);
}


SYSTEMTIME timettosystemtime (time_t t)
{
filetime ft;
SYSTEMTIME PST;
//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;
}