将系统时间设置为指定时间

; 将系统时间设置为：2015年1月7日 8点37分27秒【中国是+8点，所以参数4：0 = 北京时间8点】
SetSystemTime(2022, 1, 7, 0, 37, 27)


; ===========================================================
; Function......: SetSystemTime
; DLL...........: Kernel32.dll
; Library.......: Kernel32.lib
; U/ANSI........:
; Author........: jNizM
; Modified......:
; Links.........: https://msdn.microsoft.com/en-us/library/ms724942.aspx
;                 https://msdn.microsoft.com/en-us/library/windows/desktop/ms724942.aspx
; ===========================================================
SetSystemTime(Year := 1601, Month := 1, Day := 1, Hour := 0, Minute := 0, Second := 0, Milliseconds := 0, DayOfWeek := 0) {
  static
  VarSetCapacity(SYSTEMTIME, 16)
  , NumPut(Year,      SYSTEMTIME,  0, "UShort"), NumPut(Month,        SYSTEMTIME,  2, "UShort")
  , NumPut(DayOfWeek, SYSTEMTIME,  4, "UShort"), NumPut(Day,          SYSTEMTIME,  6, "UShort")
  , NumPut(Hour,      SYSTEMTIME,  8, "UShort"), NumPut(Minute,       SYSTEMTIME, 10, "UShort")
  , NumPut(Second,    SYSTEMTIME, 12, "UShort"), NumPut(Milliseconds, SYSTEMTIME, 14, "UShort")
  if !(DllCall("kernel32.dll\SetSystemTime", "Ptr", &SYSTEMTIME))
    return DllCall("kernel32.dll\GetLastError")
  return 1
}


/* C++
BOOL WINAPI SetSystemTime(                        // UInt
    _In_  const SYSTEMTIME *lpSystemTime          // Ptr        (16)
);


typedef struct _SYSTEMTIME {
    WORD wYear;                         // UShort      2          =>   0
    WORD wMonth;                        // UShort      2          =>   2
    WORD wDayOfWeek;                    // UShort      2          =>   4
    WORD wDay;                          // UShort      2          =>   6
    WORD wHour;                         // UShort      2          =>   8
    WORD wMinute;                       // UShort      2          =>  10
    WORD wSecond;                       // UShort      2          =>  12
    WORD wMilliseconds;                 // UShort      2          =>  14
} SYSTEMTIME, *PSYSTEMTIME;
*/