FILETIME to __int64

Question

What is the proper way to convert a FILETIME structure into __int64? Can you please tell me?

Answer 1

you can try the code follow. the code is from chromium project

template 
inline Dest bit_cast(const Source& source) {
    Dest dest;
    memcpy(&dest, &source, sizeof(dest));
    return dest;
}

//FILETIME to __int64

__int64 FileTimeToMicroseconds(const FILETIME& ft) {
    return bit_cast<__int64, FILETIME>(ft) / 10;
}

void MicrosecondsToFileTime(__int64 us, FILETIME* ft) {
    *ft = bit_cast(us * 10);
}

int _tmain(int argc, _TCHAR* argv[])
{
    __int64 nTmpUint64 = 13060762249644841;

    time_t unixtime;
    FILETIME nTmpFileTm;
    MicrosecondsToFileTime(nTmpUint64,&nTmpFileTm);

    return 0;
}