DecodeRemotePointer

// api-ms-win-core-util-l1-1-1.dll
#include <windows.h>

HRESULT DecodeRemotePointer(
    HANDLE ProcessHandle,
    void* Ptr,   // optional
    void** DecodedPtr
);

<DllImport("api-ms-win-core-util-l1-1-1.dll", ExactSpelling:=True)>
Public Shared Function DecodeRemotePointer(
    ProcessHandle As IntPtr,   ' HANDLE
    Ptr As IntPtr,   ' void* optional
    DecodedPtr As IntPtr   ' void** out
) As Integer
End Function

' ProcessHandle : HANDLE
' Ptr : void* optional
' DecodedPtr : void** out
Declare PtrSafe Function DecodeRemotePointer Lib "api-ms-win-core-util-l1-1-1" ( _
    ByVal ProcessHandle As LongPtr, _
    ByVal Ptr As LongPtr, _
    ByVal DecodedPtr As LongPtr) As Long
' VBA7前提(PtrSafe)。32bit Office では LongPtr→Long。Integer=16bit / Long=32bit / LongLong=64bit。

import ctypes
from ctypes import wintypes

DecodeRemotePointer = ctypes.windll.LoadLibrary("api-ms-win-core-util-l1-1-1.dll").DecodeRemotePointer
DecodeRemotePointer.restype = ctypes.c_int
DecodeRemotePointer.argtypes = [
    wintypes.HANDLE,  # ProcessHandle : HANDLE
    ctypes.POINTER(None),  # Ptr : void* optional
    ctypes.c_void_p,  # DecodedPtr : void** out
]

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('api-ms-win-core-util-l1-1-1.dll')
DecodeRemotePointer = Fiddle::Function.new(
  lib['DecodeRemotePointer'],
  [
    Fiddle::TYPE_VOIDP,  # ProcessHandle : HANDLE
    Fiddle::TYPE_VOIDP,  # Ptr : void* optional
    Fiddle::TYPE_VOIDP,  # DecodedPtr : void** out
  ],
  Fiddle::TYPE_INT)

#[link(name = "api-ms-win-core-util-l1-1-1")]
extern "system" {
    fn DecodeRemotePointer(
        ProcessHandle: *mut core::ffi::c_void,  // HANDLE
        Ptr: *mut (),  // void* optional
        DecodedPtr: *mut *mut ()  // void** out
    ) -> i32;
}
// crates: windows-sys provides ready-made bindings for this API.

$sig = @"
[DllImport("api-ms-win-core-util-l1-1-1.dll")]
public static extern int DecodeRemotePointer(IntPtr ProcessHandle, IntPtr Ptr, IntPtr DecodedPtr);
"@
$api = Add-Type -MemberDefinition $sig -Name 'api-ms-win-core-util-l1-1-1_DecodeRemotePointer' -Namespace Win32 -PassThru
# $api::DecodeRemotePointer(ProcessHandle, Ptr, DecodedPtr)

#uselib "api-ms-win-core-util-l1-1-1.dll"
#func global DecodeRemotePointer "DecodeRemotePointer" sptr, sptr, sptr
; DecodeRemotePointer ProcessHandle, Ptr, DecodedPtr   ; 戻り値は stat
; ProcessHandle : HANDLE -> "sptr"
; Ptr : void* optional -> "sptr"
; DecodedPtr : void** 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 "api-ms-win-core-util-l1-1-1.dll"
#cfunc global DecodeRemotePointer "DecodeRemotePointer" sptr, sptr, sptr
; res = DecodeRemotePointer(ProcessHandle, Ptr, DecodedPtr)
; ProcessHandle : HANDLE -> "sptr"
; Ptr : void* optional -> "sptr"
; DecodedPtr : void** out -> "sptr"

; HRESULT DecodeRemotePointer(HANDLE ProcessHandle, void* Ptr, void** DecodedPtr)
#uselib "api-ms-win-core-util-l1-1-1.dll"
#cfunc global DecodeRemotePointer "DecodeRemotePointer" intptr, intptr, intptr
; res = DecodeRemotePointer(ProcessHandle, Ptr, DecodedPtr)
; ProcessHandle : HANDLE -> "intptr"
; Ptr : void* optional -> "intptr"
; DecodedPtr : void** out -> "intptr"

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

var (
	api_ms_win_core_util_l1_1_1 = windows.NewLazySystemDLL("api-ms-win-core-util-l1-1-1.dll")
	procDecodeRemotePointer = api_ms_win_core_util_l1_1_1.NewProc("DecodeRemotePointer")
)

// ProcessHandle (HANDLE), Ptr (void* optional), DecodedPtr (void** out)
r1, _, err := procDecodeRemotePointer.Call(
	uintptr(ProcessHandle),
	uintptr(Ptr),
	uintptr(DecodedPtr),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // HRESULT

function DecodeRemotePointer(
  ProcessHandle: THandle;   // HANDLE
  Ptr: Pointer;   // void* optional
  DecodedPtr: Pointer   // void** out
): Integer; stdcall;
  external 'api-ms-win-core-util-l1-1-1.dll' name 'DecodeRemotePointer';

result := DllCall("api-ms-win-core-util-l1-1-1\DecodeRemotePointer"
    , "Ptr", ProcessHandle   ; HANDLE
    , "Ptr", Ptr   ; void* optional
    , "Ptr", DecodedPtr   ; void** out
    , "Int")   ; return: HRESULT

●DecodeRemotePointer(ProcessHandle, Ptr, DecodedPtr) = DLL("api-ms-win-core-util-l1-1-1.dll", "int DecodeRemotePointer(void*, void*, void*)")
# 呼び出し: DecodeRemotePointer(ProcessHandle, Ptr, DecodedPtr)
# ProcessHandle : HANDLE -> "void*"
# Ptr : void* optional -> "void*"
# DecodedPtr : void** 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)。