HANDLE hToken;
TOKEN_PRIVILEGES tp;
LUID luid;

OpenProcessToken(GetCurrentProcess(), TOKEN_ADJUST_PRIVILEGES|TOKEN_QUERY, &hToken);
LookupPrivilegeValue(NULL, "SeShutdownPrivilege", &luid);

tp.PrivilegeCount = 1;
tp.Privileges[0].Luid = luid;
tp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;

AdjustTokenPrivileges(hToken, false, &tp, 0, NULL, NULL);
ExitWindowsEx(EWX_REBOOT, 0);

이렇게 사용하시면 됩니다.

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