ULONGLONG GetTimeSpan()
{

/* WCHAR wszText[100];*/
__time64_t tmspan ;
__time64_t tmnow,tm1970;

struct tm atm ;
ZeroMemory(&atm,sizeof(tm));

tm1970 = _mktime64(&atm);

tmnow = GetTickCount();
tmspan = tmnow - tm1970 ;

// wsprintfW(wszText ,L"%I64u",tmspan);
// OutputDebugString(wszText);
return tmspan ;

}

粗鲁获取TimeSpan