wince下time_t tm systemtime 互相转换

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**time_t转SYSTEMTIME

SYSTEMTIME TimetToSystemTime(time_t t)

{

FILETIME ft;

SYSTEMTIME pst;

LONGLONG nLL = Int32x32To64(t, 10000000) + 116445024000000000;

ft.dwLowDateTime = (DWORD)nLL;

ft.dwHighDateTime = (DWORD)(nLL >> 32);

FileTimeToSystemTime(&ft, &pst);

return pst;

}

**SYSTEMTIME转time_t

time_t SystemTimeToTimet(SYSTEMTIME st)

{

FILETIME ft;

SystemTimeToFileTime( &st, &ft );

LONGLONG nLL;

ULARGE_INTEGER ui;

ui.LowPart = ft.dwLowDateTime;

ui.HighPart = ft.dwHighDateTime;

nLL = (ft.dwHighDateTime << 32) + ft.dwLowDateTime;

time_t pt = (long)((LONGLONG)(ui.QuadPart - 116445024000000000) / 10000000);

return pt;

}

原文地址：http://www.cnblogs.com/FCoding/archive/2012/11/09/2762982.html

不过这里面的116444736000000000这个值在测试的时候始终相差8个小时的时间，最后改成116445024000000000，在测试数据才对上