CopyFileA

// KERNEL32.dll  (ANSI / -A)
#include <windows.h>

BOOL CopyFileA(
    LPCSTR lpExistingFileName,
    LPCSTR lpNewFileName,
    BOOL bFailIfExists
);

<DllImport("KERNEL32.dll", CharSet:=CharSet.Ansi, SetLastError:=True, ExactSpelling:=True)>
Public Shared Function CopyFileA(
    <MarshalAs(UnmanagedType.LPStr)> lpExistingFileName As String,   ' LPCSTR
    <MarshalAs(UnmanagedType.LPStr)> lpNewFileName As String,   ' LPCSTR
    bFailIfExists As Boolean   ' BOOL
) As <MarshalAs(UnmanagedType.Bool)> Boolean
End Function

' lpExistingFileName : LPCSTR
' lpNewFileName : LPCSTR
' bFailIfExists : BOOL
Declare PtrSafe Function CopyFileA Lib "kernel32" ( _
    ByVal lpExistingFileName As String, _
    ByVal lpNewFileName As String, _
    ByVal bFailIfExists As Long) As Long
' VBA7前提(PtrSafe)。32bit Office では LongPtr→Long。Integer=16bit / Long=32bit / LongLong=64bit。

import ctypes
from ctypes import wintypes

CopyFileA = ctypes.windll.kernel32.CopyFileA
CopyFileA.restype = wintypes.BOOL
CopyFileA.argtypes = [
    wintypes.LPCSTR,  # lpExistingFileName : LPCSTR
    wintypes.LPCSTR,  # lpNewFileName : LPCSTR
    wintypes.BOOL,  # bFailIfExists : BOOL
]
# GetLastError: use ctypes.GetLastError() (or ctypes.WinDLL(use_last_error=True))

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('KERNEL32.dll')
CopyFileA = Fiddle::Function.new(
  lib['CopyFileA'],
  [
    Fiddle::TYPE_VOIDP,  # lpExistingFileName : LPCSTR
    Fiddle::TYPE_VOIDP,  # lpNewFileName : LPCSTR
    Fiddle::TYPE_INT,  # bFailIfExists : BOOL
  ],
  Fiddle::TYPE_INT)

#[link(name = "kernel32")]
extern "system" {
    fn CopyFileA(
        lpExistingFileName: *const u8,  // LPCSTR
        lpNewFileName: *const u8,  // LPCSTR
        bFailIfExists: i32  // BOOL
    ) -> i32;
}
// crates: windows-sys provides ready-made bindings for this API.

$sig = @"
[return: MarshalAs(UnmanagedType.Bool)]
[DllImport("KERNEL32.dll", CharSet = CharSet.Ansi, SetLastError = true)]
public static extern bool CopyFileA([MarshalAs(UnmanagedType.LPStr)] string lpExistingFileName, [MarshalAs(UnmanagedType.LPStr)] string lpNewFileName, bool bFailIfExists);
"@
$api = Add-Type -MemberDefinition $sig -Name 'KERNEL32_CopyFileA' -Namespace Win32 -PassThru
# $api::CopyFileA(lpExistingFileName, lpNewFileName, bFailIfExists)

#uselib "KERNEL32.dll"
#func global CopyFileA "CopyFileA" sptr, sptr, sptr
; CopyFileA lpExistingFileName, lpNewFileName, bFailIfExists   ; 戻り値は stat
; lpExistingFileName : LPCSTR -> "sptr"
; lpNewFileName : LPCSTR -> "sptr"
; bFailIfExists : BOOL -> "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 CopyFileA "CopyFileA" str, str, int
; res = CopyFileA(lpExistingFileName, lpNewFileName, bFailIfExists)
; lpExistingFileName : LPCSTR -> "str"
; lpNewFileName : LPCSTR -> "str"
; bFailIfExists : BOOL -> "int"

; BOOL CopyFileA(LPCSTR lpExistingFileName, LPCSTR lpNewFileName, BOOL bFailIfExists)
#uselib "KERNEL32.dll"
#cfunc global CopyFileA "CopyFileA" str, str, int
; res = CopyFileA(lpExistingFileName, lpNewFileName, bFailIfExists)
; lpExistingFileName : LPCSTR -> "str"
; lpNewFileName : LPCSTR -> "str"
; bFailIfExists : BOOL -> "int"

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

var (
	kernel32 = windows.NewLazySystemDLL("KERNEL32.dll")
	procCopyFileA = kernel32.NewProc("CopyFileA")
)

// lpExistingFileName (LPCSTR), lpNewFileName (LPCSTR), bFailIfExists (BOOL)
r1, _, err := procCopyFileA.Call(
	uintptr(unsafe.Pointer(windows.BytePtrFromString(lpExistingFileName))),
	uintptr(unsafe.Pointer(windows.BytePtrFromString(lpNewFileName))),
	uintptr(bFailIfExists),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // BOOL

function CopyFileA(
  lpExistingFileName: PAnsiChar;   // LPCSTR
  lpNewFileName: PAnsiChar;   // LPCSTR
  bFailIfExists: BOOL   // BOOL
): BOOL; stdcall;
  external 'KERNEL32.dll' name 'CopyFileA';

result := DllCall("KERNEL32\CopyFileA"
    , "AStr", lpExistingFileName   ; LPCSTR
    , "AStr", lpNewFileName   ; LPCSTR
    , "Int", bFailIfExists   ; BOOL
    , "Int")   ; return: BOOL

●CopyFileA(lpExistingFileName, lpNewFileName, bFailIfExists) = DLL("KERNEL32.dll", "bool CopyFileA(char*, char*, bool)")
# 呼び出し: CopyFileA(lpExistingFileName, lpNewFileName, bFailIfExists)
# lpExistingFileName : LPCSTR -> "char*"
# lpNewFileName : LPCSTR -> "char*"
# bFailIfExists : BOOL -> "bool"
# 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)。

const std = @import("std");

extern "kernel32" fn CopyFileA(
    lpExistingFileName: [*c]const u8, // LPCSTR
    lpNewFileName: [*c]const u8, // LPCSTR
    bFailIfExists: i32 // BOOL
) callconv(std.os.windows.WINAPI) i32;

proc CopyFileA(
    lpExistingFileName: cstring,  # LPCSTR
    lpNewFileName: cstring,  # LPCSTR
    bFailIfExists: int32  # BOOL
): int32 {.importc: "CopyFileA", stdcall, dynlib: "KERNEL32.dll".}

pragma(lib, "kernel32");
extern(Windows)
int CopyFileA(
    const(char)* lpExistingFileName,   // LPCSTR
    const(char)* lpNewFileName,   // LPCSTR
    int bFailIfExists   // BOOL
);

ccall((:CopyFileA, "KERNEL32.dll"), stdcall, Int32,
      (Cstring, Cstring, Int32),
      lpExistingFileName, lpNewFileName, bFailIfExists)
# lpExistingFileName : LPCSTR -> Cstring
# lpNewFileName : LPCSTR -> Cstring
# bFailIfExists : BOOL -> Int32
# stdcall は 32bit のみ意味を持つ(x64 では無視)。

local ffi = require("ffi")
ffi.cdef[[
int32_t CopyFileA(
    const char* lpExistingFileName,
    const char* lpNewFileName,
    int32_t bFailIfExists);
]]
local kernel32 = ffi.load("kernel32")
-- kernel32.CopyFileA(lpExistingFileName, lpNewFileName, bFailIfExists)
-- lpExistingFileName : LPCSTR
-- lpNewFileName : LPCSTR
-- bFailIfExists : BOOL
-- 構造体/GUIDへのポインタは cdef が通るよう void* で表記(実型は各引数コメント参照)。値渡し構造体・enum は対応する typedef を cdef に追加すること。

const koffi = require('koffi');
const lib = koffi.load('KERNEL32.dll');
const CopyFileA = lib.func('__stdcall', 'CopyFileA', 'int32_t', ['str', 'str', 'int32_t']);
// CopyFileA(lpExistingFileName, lpNewFileName, bFailIfExists)
// lpExistingFileName : LPCSTR -> 'str'
// lpNewFileName : LPCSTR -> 'str'
// bFailIfExists : BOOL -> 'int32_t'
// 出力ポインタは koffi.out(...) で包む。構造体は koffi.struct で定義。

const lib = Deno.dlopen("KERNEL32.dll", {
  CopyFileA: { parameters: ["buffer", "buffer", "i32"], result: "i32" },
});
// lib.symbols.CopyFileA(lpExistingFileName, lpNewFileName, bFailIfExists)
// lpExistingFileName : LPCSTR -> "buffer"
// lpNewFileName : LPCSTR -> "buffer"
// bFailIfExists : BOOL -> "i32"
// 文字列は "buffer"。ANSI(-A) は new TextEncoder() で UTF-8/ANSI バイト列(末尾に \x00)を渡す。
// 値渡し構造体は { struct: [ ...field types... ] } を使用。

<?php
$ffi = FFI::cdef(<<<C
int32_t CopyFileA(
    const char* lpExistingFileName,
    const char* lpNewFileName,
    int32_t bFailIfExists);
C, "KERNEL32.dll");
// $ffi->CopyFileA(lpExistingFileName, lpNewFileName, bFailIfExists);
// lpExistingFileName : LPCSTR
// lpNewFileName : LPCSTR
// bFailIfExists : BOOL
// 構造体/GUIDへのポインタは cdef が通るよう void* で表記(実型は各引数コメント参照)。値渡し構造体・enum は対応する typedef を cdef に追加すること。
// WINAPI(stdcall): x64 では呼出規約が統一されるため問題なし。x86 では __stdcall 対応のラッパが必要な場合あり。

import com.sun.jna.*;
import com.sun.jna.ptr.*;
import com.sun.jna.win32.StdCallLibrary;
import com.sun.jna.win32.W32APIOptions;

public interface Kernel32 extends StdCallLibrary {
    Kernel32 INSTANCE = Native.load("kernel32", Kernel32.class, W32APIOptions.ASCII_OPTIONS);
    boolean CopyFileA(
        String lpExistingFileName,   // LPCSTR
        String lpNewFileName,   // LPCSTR
        boolean bFailIfExists   // BOOL
    );
}

@[Link("kernel32")]
lib LibKERNEL32
  fun CopyFileA = CopyFileA(
    lpExistingFileName : UInt8*,   # LPCSTR
    lpNewFileName : UInt8*,   # LPCSTR
    bFailIfExists : Int32   # BOOL
  ) : Int32
end
# 構造体/GUID/enum は lib 内に対応する型定義が必要。
# 呼出規約: x64 は規約統一のため OK。x86(32bit)は WINAPI=stdcall だが Crystal の fun に stdcall 付与構文がなく非対応。

import 'dart:ffi';
import 'package:ffi/ffi.dart';

typedef CopyFileANative = Int32 Function(Pointer<Utf8>, Pointer<Utf8>, Int32);
typedef CopyFileADart = int Function(Pointer<Utf8>, Pointer<Utf8>, int);
final CopyFileA = DynamicLibrary.open('KERNEL32.dll')
    .lookupFunction<CopyFileANative, CopyFileADart>('CopyFileA');
// lpExistingFileName : LPCSTR -> Pointer<Utf8>
// lpNewFileName : LPCSTR -> Pointer<Utf8>
// bFailIfExists : BOOL -> Int32
// 文字列は package:ffi の "...".toNativeUtf16()/toNativeUtf8() で変換。

{$mode objfpc}{$H+}
function CopyFileA(
  lpExistingFileName: PAnsiChar;   // LPCSTR
  lpNewFileName: PAnsiChar;   // LPCSTR
  bFailIfExists: BOOL   // BOOL
): BOOL; stdcall;
  external 'KERNEL32.dll' name 'CopyFileA';

import Foreign
import Foreign.C.Types
import Foreign.C.String

foreign import stdcall safe "CopyFileA"
  c_CopyFileA :: CString -> CString -> CInt -> IO CInt
-- lpExistingFileName : LPCSTR -> CString
-- lpNewFileName : LPCSTR -> CString
-- bFailIfExists : BOOL -> CInt
-- 要 GHC(Windows)。stdcall は x64 では ccall として扱われる。ブロックする API は safe 呼び出し推奨。

open Ctypes
open Foreign

let copyfilea =
  foreign "CopyFileA"
    (string @-> string @-> int32_t @-> returning int32_t)
(* lpExistingFileName : LPCSTR -> string *)
(* lpNewFileName : LPCSTR -> string *)
(* bFailIfExists : BOOL -> int32_t *)
(* foreign は cdecl 前提。x64 Windows では WINAPI と一致。構造体は ctypes structure を定義のこと。 *)

(cffi:define-foreign-library kernel32 (t "KERNEL32.dll"))
(cffi:use-foreign-library kernel32)

(cffi:defcfun ("CopyFileA" copy-file-a :convention :stdcall) :int32
  (lp-existing-file-name :string)   ; LPCSTR
  (lp-new-file-name :string)   ; LPCSTR
  (b-fail-if-exists :int32))   ; BOOL
; isize/usize(INT_PTR/SIZE_T)は x64 前提で :int64/:uint64。x86 では :int32/:uint32。

use Win32::API;
my $CopyFileA = Win32::API::More->new('KERNEL32',
    'BOOL CopyFileA(LPCSTR lpExistingFileName, LPCSTR lpNewFileName, BOOL bFailIfExists)');
# my $ret = $CopyFileA->Call($lpExistingFileName, $lpNewFileName, $bFailIfExists);
# lpExistingFileName : LPCSTR -> LPCSTR
# lpNewFileName : LPCSTR -> LPCSTR
# bFailIfExists : BOOL -> BOOL
# 値渡し構造体は pack() した文字列、または Win32::API::Struct を使用。