IsWow64Process2

// KERNEL32.dll
#include <windows.h>

BOOL IsWow64Process2(
    HANDLE hProcess,
    IMAGE_FILE_MACHINE* pProcessMachine,
    IMAGE_FILE_MACHINE* pNativeMachine   // optional
);

<DllImport("KERNEL32.dll", SetLastError:=True, ExactSpelling:=True)>
Public Shared Function IsWow64Process2(
    hProcess As IntPtr,   ' HANDLE
    <Out> ByRef pProcessMachine As UShort,   ' IMAGE_FILE_MACHINE* out
    pNativeMachine As IntPtr   ' IMAGE_FILE_MACHINE* optional, out
) As Boolean
End Function

' hProcess : HANDLE
' pProcessMachine : IMAGE_FILE_MACHINE* out
' pNativeMachine : IMAGE_FILE_MACHINE* optional, out
Declare PtrSafe Function IsWow64Process2 Lib "kernel32" ( _
    ByVal hProcess As LongPtr, _
    ByRef pProcessMachine As Integer, _
    ByVal pNativeMachine 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

IsWow64Process2 = ctypes.windll.kernel32.IsWow64Process2
IsWow64Process2.restype = wintypes.BOOL
IsWow64Process2.argtypes = [
    wintypes.HANDLE,  # hProcess : HANDLE
    ctypes.c_void_p,  # pProcessMachine : IMAGE_FILE_MACHINE* out
    ctypes.c_void_p,  # pNativeMachine : IMAGE_FILE_MACHINE* optional, out
]
# GetLastError: use ctypes.GetLastError() (or ctypes.WinDLL(use_last_error=True))

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('KERNEL32.dll')
IsWow64Process2 = Fiddle::Function.new(
  lib['IsWow64Process2'],
  [
    Fiddle::TYPE_VOIDP,  # hProcess : HANDLE
    Fiddle::TYPE_VOIDP,  # pProcessMachine : IMAGE_FILE_MACHINE* out
    Fiddle::TYPE_VOIDP,  # pNativeMachine : IMAGE_FILE_MACHINE* optional, out
  ],
  Fiddle::TYPE_INT)

#[link(name = "kernel32")]
extern "system" {
    fn IsWow64Process2(
        hProcess: *mut core::ffi::c_void,  // HANDLE
        pProcessMachine: *mut u16,  // IMAGE_FILE_MACHINE* out
        pNativeMachine: *mut u16  // IMAGE_FILE_MACHINE* optional, out
    ) -> i32;
}
// crates: windows-sys provides ready-made bindings for this API.

$sig = @"
[return: MarshalAs(UnmanagedType.Bool)]
[DllImport("KERNEL32.dll", SetLastError = true)]
public static extern bool IsWow64Process2(IntPtr hProcess, out ushort pProcessMachine, IntPtr pNativeMachine);
"@
$api = Add-Type -MemberDefinition $sig -Name 'KERNEL32_IsWow64Process2' -Namespace Win32 -PassThru
# $api::IsWow64Process2(hProcess, pProcessMachine, pNativeMachine)

#uselib "KERNEL32.dll"
#func global IsWow64Process2 "IsWow64Process2" sptr, sptr, sptr
; IsWow64Process2 hProcess, pProcessMachine, pNativeMachine   ; 戻り値は stat
; hProcess : HANDLE -> "sptr"
; pProcessMachine : IMAGE_FILE_MACHINE* out -> "sptr"
; pNativeMachine : IMAGE_FILE_MACHINE* optional, 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 "KERNEL32.dll"
#cfunc global IsWow64Process2 "IsWow64Process2" sptr, int, int
; res = IsWow64Process2(hProcess, pProcessMachine, pNativeMachine)
; hProcess : HANDLE -> "sptr"
; pProcessMachine : IMAGE_FILE_MACHINE* out -> "int"
; pNativeMachine : IMAGE_FILE_MACHINE* optional, out -> "int"

; BOOL IsWow64Process2(HANDLE hProcess, IMAGE_FILE_MACHINE* pProcessMachine, IMAGE_FILE_MACHINE* pNativeMachine)
#uselib "KERNEL32.dll"
#cfunc global IsWow64Process2 "IsWow64Process2" intptr, int, int
; res = IsWow64Process2(hProcess, pProcessMachine, pNativeMachine)
; hProcess : HANDLE -> "intptr"
; pProcessMachine : IMAGE_FILE_MACHINE* out -> "int"
; pNativeMachine : IMAGE_FILE_MACHINE* optional, out -> "int"

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

var (
	kernel32 = windows.NewLazySystemDLL("KERNEL32.dll")
	procIsWow64Process2 = kernel32.NewProc("IsWow64Process2")
)

// hProcess (HANDLE), pProcessMachine (IMAGE_FILE_MACHINE* out), pNativeMachine (IMAGE_FILE_MACHINE* optional, out)
r1, _, err := procIsWow64Process2.Call(
	uintptr(hProcess),
	uintptr(pProcessMachine),
	uintptr(pNativeMachine),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // BOOL

function IsWow64Process2(
  hProcess: THandle;   // HANDLE
  pProcessMachine: Pointer;   // IMAGE_FILE_MACHINE* out
  pNativeMachine: Pointer   // IMAGE_FILE_MACHINE* optional, out
): BOOL; stdcall;
  external 'KERNEL32.dll' name 'IsWow64Process2';

result := DllCall("KERNEL32\IsWow64Process2"
    , "Ptr", hProcess   ; HANDLE
    , "Ptr", pProcessMachine   ; IMAGE_FILE_MACHINE* out
    , "Ptr", pNativeMachine   ; IMAGE_FILE_MACHINE* optional, out
    , "Int")   ; return: BOOL

●IsWow64Process2(hProcess, pProcessMachine, pNativeMachine) = DLL("KERNEL32.dll", "bool IsWow64Process2(void*, void*, void*)")
# 呼び出し: IsWow64Process2(hProcess, pProcessMachine, pNativeMachine)
# hProcess : HANDLE -> "void*"
# pProcessMachine : IMAGE_FILE_MACHINE* out -> "void*"
# pNativeMachine : IMAGE_FILE_MACHINE* optional, 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)。