RtlTimeToSecondsSince1970

// ntdll.dll
#include <windows.h>

BOOLEAN RtlTimeToSecondsSince1970(
    LONGLONG* Time,
    DWORD* ElapsedSeconds
);

<DllImport("ntdll.dll", ExactSpelling:=True)>
Public Shared Function RtlTimeToSecondsSince1970(
    ByRef Time As Long,   ' LONGLONG* in/out
    ByRef ElapsedSeconds As UInteger   ' DWORD* in/out
) As Byte
End Function

' Time : LONGLONG* in/out
' ElapsedSeconds : DWORD* in/out
Declare PtrSafe Function RtlTimeToSecondsSince1970 Lib "ntdll" ( _
    ByRef Time As LongLong, _
    ByRef ElapsedSeconds As Long) As Byte
' VBA7前提(PtrSafe)。32bit Office では LongPtr→Long。Integer=16bit / Long=32bit / LongLong=64bit。

import ctypes
from ctypes import wintypes

RtlTimeToSecondsSince1970 = ctypes.windll.ntdll.RtlTimeToSecondsSince1970
RtlTimeToSecondsSince1970.restype = ctypes.c_byte
RtlTimeToSecondsSince1970.argtypes = [
    ctypes.POINTER(ctypes.c_longlong),  # Time : LONGLONG* in/out
    ctypes.POINTER(wintypes.DWORD),  # ElapsedSeconds : DWORD* in/out
]

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('ntdll.dll')
RtlTimeToSecondsSince1970 = Fiddle::Function.new(
  lib['RtlTimeToSecondsSince1970'],
  [
    Fiddle::TYPE_VOIDP,  # Time : LONGLONG* in/out
    Fiddle::TYPE_VOIDP,  # ElapsedSeconds : DWORD* in/out
  ],
  Fiddle::TYPE_CHAR)

#[link(name = "ntdll")]
extern "system" {
    fn RtlTimeToSecondsSince1970(
        Time: *mut i64,  // LONGLONG* in/out
        ElapsedSeconds: *mut u32  // DWORD* in/out
    ) -> u8;
}
// crates: windows-sys provides ready-made bindings for this API.

$sig = @"
[DllImport("ntdll.dll")]
public static extern byte RtlTimeToSecondsSince1970(ref long Time, ref uint ElapsedSeconds);
"@
$api = Add-Type -MemberDefinition $sig -Name 'ntdll_RtlTimeToSecondsSince1970' -Namespace Win32 -PassThru
# $api::RtlTimeToSecondsSince1970(Time, ElapsedSeconds)

#uselib "ntdll.dll"
#func global RtlTimeToSecondsSince1970 "RtlTimeToSecondsSince1970" sptr, sptr
; RtlTimeToSecondsSince1970 varptr(Time), varptr(ElapsedSeconds)   ; 戻り値は stat
; Time : LONGLONG* in/out -> "sptr"
; ElapsedSeconds : DWORD* in/out -> "sptr"
; ※HSP3.7は #func のため戻り値はシステム変数 stat に格納されます。

#uselib "ntdll.dll"
#cfunc global RtlTimeToSecondsSince1970 "RtlTimeToSecondsSince1970" var, var
; res = RtlTimeToSecondsSince1970(Time, ElapsedSeconds)
; Time : LONGLONG* in/out -> "var"
; ElapsedSeconds : DWORD* in/out -> "var"
; ※出力/バッファ引数は var 方式(変数を直接渡す)。varptr 方式にも切替可。

; BOOLEAN RtlTimeToSecondsSince1970(LONGLONG* Time, DWORD* ElapsedSeconds)
#uselib "ntdll.dll"
#cfunc global RtlTimeToSecondsSince1970 "RtlTimeToSecondsSince1970" var, var
; res = RtlTimeToSecondsSince1970(Time, ElapsedSeconds)
; Time : LONGLONG* in/out -> "var"
; ElapsedSeconds : DWORD* in/out -> "var"
; ※出力/バッファ引数は var 方式(変数を直接渡す)。varptr 方式にも切替可。

import (
	"golang.org/x/sys/windows"
	"unsafe"
)

var (
	ntdll = windows.NewLazySystemDLL("ntdll.dll")
	procRtlTimeToSecondsSince1970 = ntdll.NewProc("RtlTimeToSecondsSince1970")
)

// Time (LONGLONG* in/out), ElapsedSeconds (DWORD* in/out)
r1, _, err := procRtlTimeToSecondsSince1970.Call(
	uintptr(Time),
	uintptr(ElapsedSeconds),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // BOOLEAN

function RtlTimeToSecondsSince1970(
  Time: Pointer;   // LONGLONG* in/out
  ElapsedSeconds: Pointer   // DWORD* in/out
): ByteBool; stdcall;
  external 'ntdll.dll' name 'RtlTimeToSecondsSince1970';

result := DllCall("ntdll\RtlTimeToSecondsSince1970"
    , "Ptr", Time   ; LONGLONG* in/out
    , "Ptr", ElapsedSeconds   ; DWORD* in/out
    , "Char")   ; return: BOOLEAN

●RtlTimeToSecondsSince1970(Time, ElapsedSeconds) = DLL("ntdll.dll", "byte RtlTimeToSecondsSince1970(void*, void*)")
# 呼び出し: RtlTimeToSecondsSince1970(Time, ElapsedSeconds)
# Time : LONGLONG* in/out -> "void*"
# ElapsedSeconds : DWORD* in/out -> "void*"
# なでしこ1は32bit・ANSI(Shift_JIS)。文字列=char*(ANSI)、ポインタ/ハンドル=void*(4byte)。