CopyFile2

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

HRESULT CopyFile2(
    LPCWSTR pwszExistingFileName,
    LPCWSTR pwszNewFileName,
    COPYFILE2_EXTENDED_PARAMETERS* pExtendedParameters   // optional
);

<DllImport("KERNEL32.dll", ExactSpelling:=True)>
Public Shared Function CopyFile2(
    <MarshalAs(UnmanagedType.LPWStr)> pwszExistingFileName As String,   ' LPCWSTR
    <MarshalAs(UnmanagedType.LPWStr)> pwszNewFileName As String,   ' LPCWSTR
    pExtendedParameters As IntPtr   ' COPYFILE2_EXTENDED_PARAMETERS* optional
) As Integer
End Function

' pwszExistingFileName : LPCWSTR
' pwszNewFileName : LPCWSTR
' pExtendedParameters : COPYFILE2_EXTENDED_PARAMETERS* optional
Declare PtrSafe Function CopyFile2 Lib "kernel32" ( _
    ByVal pwszExistingFileName As LongPtr, _
    ByVal pwszNewFileName As LongPtr, _
    ByVal pExtendedParameters 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

CopyFile2 = ctypes.windll.kernel32.CopyFile2
CopyFile2.restype = ctypes.c_int
CopyFile2.argtypes = [
    wintypes.LPCWSTR,  # pwszExistingFileName : LPCWSTR
    wintypes.LPCWSTR,  # pwszNewFileName : LPCWSTR
    ctypes.c_void_p,  # pExtendedParameters : COPYFILE2_EXTENDED_PARAMETERS* optional
]

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('KERNEL32.dll')
CopyFile2 = Fiddle::Function.new(
  lib['CopyFile2'],
  [
    Fiddle::TYPE_VOIDP,  # pwszExistingFileName : LPCWSTR
    Fiddle::TYPE_VOIDP,  # pwszNewFileName : LPCWSTR
    Fiddle::TYPE_VOIDP,  # pExtendedParameters : COPYFILE2_EXTENDED_PARAMETERS* optional
  ],
  Fiddle::TYPE_INT)

#[link(name = "kernel32")]
extern "system" {
    fn CopyFile2(
        pwszExistingFileName: *const u16,  // LPCWSTR
        pwszNewFileName: *const u16,  // LPCWSTR
        pExtendedParameters: *mut COPYFILE2_EXTENDED_PARAMETERS  // COPYFILE2_EXTENDED_PARAMETERS* optional
    ) -> i32;
}
// crates: windows-sys provides ready-made bindings for this API.

$sig = @"
[DllImport("KERNEL32.dll")]
public static extern int CopyFile2([MarshalAs(UnmanagedType.LPWStr)] string pwszExistingFileName, [MarshalAs(UnmanagedType.LPWStr)] string pwszNewFileName, IntPtr pExtendedParameters);
"@
$api = Add-Type -MemberDefinition $sig -Name 'KERNEL32_CopyFile2' -Namespace Win32 -PassThru
# $api::CopyFile2(pwszExistingFileName, pwszNewFileName, pExtendedParameters)

#uselib "KERNEL32.dll"
#func global CopyFile2 "CopyFile2" sptr, sptr, sptr
; CopyFile2 pwszExistingFileName, pwszNewFileName, varptr(pExtendedParameters)   ; 戻り値は stat
; pwszExistingFileName : LPCWSTR -> "sptr"
; pwszNewFileName : LPCWSTR -> "sptr"
; pExtendedParameters : COPYFILE2_EXTENDED_PARAMETERS* optional -> "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 CopyFile2 "CopyFile2" wstr, wstr, var
; res = CopyFile2(pwszExistingFileName, pwszNewFileName, pExtendedParameters)
; pwszExistingFileName : LPCWSTR -> "wstr"
; pwszNewFileName : LPCWSTR -> "wstr"
; pExtendedParameters : COPYFILE2_EXTENDED_PARAMETERS* optional -> "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。

; HRESULT CopyFile2(LPCWSTR pwszExistingFileName, LPCWSTR pwszNewFileName, COPYFILE2_EXTENDED_PARAMETERS* pExtendedParameters)
#uselib "KERNEL32.dll"
#cfunc global CopyFile2 "CopyFile2" wstr, wstr, var
; res = CopyFile2(pwszExistingFileName, pwszNewFileName, pExtendedParameters)
; pwszExistingFileName : LPCWSTR -> "wstr"
; pwszNewFileName : LPCWSTR -> "wstr"
; pExtendedParameters : COPYFILE2_EXTENDED_PARAMETERS* optional -> "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 (
	kernel32 = windows.NewLazySystemDLL("KERNEL32.dll")
	procCopyFile2 = kernel32.NewProc("CopyFile2")
)

// pwszExistingFileName (LPCWSTR), pwszNewFileName (LPCWSTR), pExtendedParameters (COPYFILE2_EXTENDED_PARAMETERS* optional)
r1, _, err := procCopyFile2.Call(
	uintptr(unsafe.Pointer(windows.StringToUTF16Ptr(pwszExistingFileName))),
	uintptr(unsafe.Pointer(windows.StringToUTF16Ptr(pwszNewFileName))),
	uintptr(pExtendedParameters),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // HRESULT

function CopyFile2(
  pwszExistingFileName: PWideChar;   // LPCWSTR
  pwszNewFileName: PWideChar;   // LPCWSTR
  pExtendedParameters: Pointer   // COPYFILE2_EXTENDED_PARAMETERS* optional
): Integer; stdcall;
  external 'KERNEL32.dll' name 'CopyFile2';

result := DllCall("KERNEL32\CopyFile2"
    , "WStr", pwszExistingFileName   ; LPCWSTR
    , "WStr", pwszNewFileName   ; LPCWSTR
    , "Ptr", pExtendedParameters   ; COPYFILE2_EXTENDED_PARAMETERS* optional
    , "Int")   ; return: HRESULT

●CopyFile2(pwszExistingFileName, pwszNewFileName, pExtendedParameters) = DLL("KERNEL32.dll", "int CopyFile2(char*, char*, void*)")
# 呼び出し: CopyFile2(pwszExistingFileName, pwszNewFileName, pExtendedParameters)
# pwszExistingFileName : LPCWSTR -> "char*"
# pwszNewFileName : LPCWSTR -> "char*"
# pExtendedParameters : COPYFILE2_EXTENDED_PARAMETERS* optional -> "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)。