ReadFile

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

BOOL ReadFile(
    HANDLE hFile,
    BYTE* lpBuffer,   // optional
    DWORD nNumberOfBytesToRead,
    DWORD* lpNumberOfBytesRead,   // optional
    OVERLAPPED* lpOverlapped   // optional
);

<DllImport("KERNEL32.dll", SetLastError:=True, ExactSpelling:=True)>
Public Shared Function ReadFile(
    hFile As IntPtr,   ' HANDLE
    lpBuffer As IntPtr,   ' BYTE* optional, out
    nNumberOfBytesToRead As UInteger,   ' DWORD
    lpNumberOfBytesRead As IntPtr,   ' DWORD* optional, out
    lpOverlapped As IntPtr   ' OVERLAPPED* optional, in/out
) As <MarshalAs(UnmanagedType.Bool)> Boolean
End Function

' hFile : HANDLE
' lpBuffer : BYTE* optional, out
' nNumberOfBytesToRead : DWORD
' lpNumberOfBytesRead : DWORD* optional, out
' lpOverlapped : OVERLAPPED* optional, in/out
Declare PtrSafe Function ReadFile Lib "kernel32" ( _
    ByVal hFile As LongPtr, _
    ByVal lpBuffer As LongPtr, _
    ByVal nNumberOfBytesToRead As Long, _
    ByVal lpNumberOfBytesRead As LongPtr, _
    ByVal lpOverlapped 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

ReadFile = ctypes.windll.kernel32.ReadFile
ReadFile.restype = wintypes.BOOL
ReadFile.argtypes = [
    wintypes.HANDLE,  # hFile : HANDLE
    ctypes.POINTER(ctypes.c_ubyte),  # lpBuffer : BYTE* optional, out
    wintypes.DWORD,  # nNumberOfBytesToRead : DWORD
    ctypes.POINTER(wintypes.DWORD),  # lpNumberOfBytesRead : DWORD* optional, out
    ctypes.c_void_p,  # lpOverlapped : OVERLAPPED* optional, in/out
]
# GetLastError: use ctypes.GetLastError() (or ctypes.WinDLL(use_last_error=True))

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('KERNEL32.dll')
ReadFile = Fiddle::Function.new(
  lib['ReadFile'],
  [
    Fiddle::TYPE_VOIDP,  # hFile : HANDLE
    Fiddle::TYPE_VOIDP,  # lpBuffer : BYTE* optional, out
    -Fiddle::TYPE_INT,  # nNumberOfBytesToRead : DWORD
    Fiddle::TYPE_VOIDP,  # lpNumberOfBytesRead : DWORD* optional, out
    Fiddle::TYPE_VOIDP,  # lpOverlapped : OVERLAPPED* optional, in/out
  ],
  Fiddle::TYPE_INT)

#[link(name = "kernel32")]
extern "system" {
    fn ReadFile(
        hFile: *mut core::ffi::c_void,  // HANDLE
        lpBuffer: *mut u8,  // BYTE* optional, out
        nNumberOfBytesToRead: u32,  // DWORD
        lpNumberOfBytesRead: *mut u32,  // DWORD* optional, out
        lpOverlapped: *mut OVERLAPPED  // OVERLAPPED* optional, in/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 ReadFile(IntPtr hFile, IntPtr lpBuffer, uint nNumberOfBytesToRead, IntPtr lpNumberOfBytesRead, IntPtr lpOverlapped);
"@
$api = Add-Type -MemberDefinition $sig -Name 'KERNEL32_ReadFile' -Namespace Win32 -PassThru
# $api::ReadFile(hFile, lpBuffer, nNumberOfBytesToRead, lpNumberOfBytesRead, lpOverlapped)

#uselib "KERNEL32.dll"
#func global ReadFile "ReadFile" sptr, sptr, sptr, sptr, sptr
; ReadFile hFile, varptr(lpBuffer), nNumberOfBytesToRead, varptr(lpNumberOfBytesRead), varptr(lpOverlapped)   ; 戻り値は stat
; hFile : HANDLE -> "sptr"
; lpBuffer : BYTE* optional, out -> "sptr"
; nNumberOfBytesToRead : DWORD -> "sptr"
; lpNumberOfBytesRead : DWORD* optional, out -> "sptr"
; lpOverlapped : OVERLAPPED* optional, 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。

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

var (
	kernel32 = windows.NewLazySystemDLL("KERNEL32.dll")
	procReadFile = kernel32.NewProc("ReadFile")
)

// hFile (HANDLE), lpBuffer (BYTE* optional, out), nNumberOfBytesToRead (DWORD), lpNumberOfBytesRead (DWORD* optional, out), lpOverlapped (OVERLAPPED* optional, in/out)
r1, _, err := procReadFile.Call(
	uintptr(hFile),
	uintptr(lpBuffer),
	uintptr(nNumberOfBytesToRead),
	uintptr(lpNumberOfBytesRead),
	uintptr(lpOverlapped),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // BOOL

function ReadFile(
  hFile: THandle;   // HANDLE
  lpBuffer: Pointer;   // BYTE* optional, out
  nNumberOfBytesToRead: DWORD;   // DWORD
  lpNumberOfBytesRead: Pointer;   // DWORD* optional, out
  lpOverlapped: Pointer   // OVERLAPPED* optional, in/out
): BOOL; stdcall;
  external 'KERNEL32.dll' name 'ReadFile';

result := DllCall("KERNEL32\ReadFile"
    , "Ptr", hFile   ; HANDLE
    , "Ptr", lpBuffer   ; BYTE* optional, out
    , "UInt", nNumberOfBytesToRead   ; DWORD
    , "Ptr", lpNumberOfBytesRead   ; DWORD* optional, out
    , "Ptr", lpOverlapped   ; OVERLAPPED* optional, in/out
    , "Int")   ; return: BOOL

●ReadFile(hFile, lpBuffer, nNumberOfBytesToRead, lpNumberOfBytesRead, lpOverlapped) = DLL("KERNEL32.dll", "bool ReadFile(void*, void*, dword, void*, void*)")
# 呼び出し: ReadFile(hFile, lpBuffer, nNumberOfBytesToRead, lpNumberOfBytesRead, lpOverlapped)
# hFile : HANDLE -> "void*"
# lpBuffer : BYTE* optional, out -> "void*"
# nNumberOfBytesToRead : DWORD -> "dword"
# lpNumberOfBytesRead : DWORD* optional, out -> "void*"
# lpOverlapped : OVERLAPPED* optional, 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)。

const std = @import("std");

extern "kernel32" fn ReadFile(
    hFile: ?*anyopaque, // HANDLE
    lpBuffer: [*c]u8, // BYTE* optional, out
    nNumberOfBytesToRead: u32, // DWORD
    lpNumberOfBytesRead: [*c]u32, // DWORD* optional, out
    lpOverlapped: [*c]OVERLAPPED // OVERLAPPED* optional, in/out
) callconv(std.os.windows.WINAPI) i32;

proc ReadFile(
    hFile: pointer,  # HANDLE
    lpBuffer: ptr uint8,  # BYTE* optional, out
    nNumberOfBytesToRead: uint32,  # DWORD
    lpNumberOfBytesRead: ptr uint32,  # DWORD* optional, out
    lpOverlapped: ptr OVERLAPPED  # OVERLAPPED* optional, in/out
): int32 {.importc: "ReadFile", stdcall, dynlib: "KERNEL32.dll".}

pragma(lib, "kernel32");
extern(Windows)
int ReadFile(
    void* hFile,   // HANDLE
    ubyte* lpBuffer,   // BYTE* optional, out
    uint nNumberOfBytesToRead,   // DWORD
    uint* lpNumberOfBytesRead,   // DWORD* optional, out
    OVERLAPPED* lpOverlapped   // OVERLAPPED* optional, in/out
);

ccall((:ReadFile, "KERNEL32.dll"), stdcall, Int32,
      (Ptr{Cvoid}, Ptr{UInt8}, UInt32, Ptr{UInt32}, Ptr{OVERLAPPED}),
      hFile, lpBuffer, nNumberOfBytesToRead, lpNumberOfBytesRead, lpOverlapped)
# hFile : HANDLE -> Ptr{Cvoid}
# lpBuffer : BYTE* optional, out -> Ptr{UInt8}
# nNumberOfBytesToRead : DWORD -> UInt32
# lpNumberOfBytesRead : DWORD* optional, out -> Ptr{UInt32}
# lpOverlapped : OVERLAPPED* optional, in/out -> Ptr{OVERLAPPED}
# stdcall は 32bit のみ意味を持つ(x64 では無視)。

local ffi = require("ffi")
ffi.cdef[[
int32_t ReadFile(
    void* hFile,
    uint8_t* lpBuffer,
    uint32_t nNumberOfBytesToRead,
    uint32_t* lpNumberOfBytesRead,
    void* lpOverlapped);
]]
local kernel32 = ffi.load("kernel32")
-- kernel32.ReadFile(hFile, lpBuffer, nNumberOfBytesToRead, lpNumberOfBytesRead, lpOverlapped)
-- hFile : HANDLE
-- lpBuffer : BYTE* optional, out
-- nNumberOfBytesToRead : DWORD
-- lpNumberOfBytesRead : DWORD* optional, out
-- lpOverlapped : OVERLAPPED* optional, in/out
-- 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 ReadFile = lib.func('__stdcall', 'ReadFile', 'int32_t', ['void *', 'uint8_t *', 'uint32_t', 'uint32_t *', 'void *']);
// ReadFile(hFile, lpBuffer, nNumberOfBytesToRead, lpNumberOfBytesRead, lpOverlapped)
// hFile : HANDLE -> 'void *'
// lpBuffer : BYTE* optional, out -> 'uint8_t *'
// nNumberOfBytesToRead : DWORD -> 'uint32_t'
// lpNumberOfBytesRead : DWORD* optional, out -> 'uint32_t *'
// lpOverlapped : OVERLAPPED* optional, in/out -> 'void *'
// 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", {
  ReadFile: { parameters: ["pointer", "pointer", "u32", "pointer", "pointer"], result: "i32" },
});
// lib.symbols.ReadFile(hFile, lpBuffer, nNumberOfBytesToRead, lpNumberOfBytesRead, lpOverlapped)
// hFile : HANDLE -> "pointer"
// lpBuffer : BYTE* optional, out -> "pointer"
// nNumberOfBytesToRead : DWORD -> "u32"
// lpNumberOfBytesRead : DWORD* optional, out -> "pointer"
// lpOverlapped : OVERLAPPED* optional, in/out -> "pointer"
// 文字列引数は "buffer"(NUL 終端のバイト列を Uint8Array で渡す)。
// 値渡し構造体は { struct: [ ...field types... ] } を使用。

<?php
$ffi = FFI::cdef(<<<C
int32_t ReadFile(
    void* hFile,
    uint8_t* lpBuffer,
    uint32_t nNumberOfBytesToRead,
    uint32_t* lpNumberOfBytesRead,
    void* lpOverlapped);
C, "KERNEL32.dll");
// $ffi->ReadFile(hFile, lpBuffer, nNumberOfBytesToRead, lpNumberOfBytesRead, lpOverlapped);
// hFile : HANDLE
// lpBuffer : BYTE* optional, out
// nNumberOfBytesToRead : DWORD
// lpNumberOfBytesRead : DWORD* optional, out
// lpOverlapped : OVERLAPPED* optional, in/out
// 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);
    boolean ReadFile(
        Pointer hFile,   // HANDLE
        byte[] lpBuffer,   // BYTE* optional, out
        int nNumberOfBytesToRead,   // DWORD
        IntByReference lpNumberOfBytesRead,   // DWORD* optional, out
        Pointer lpOverlapped   // OVERLAPPED* optional, in/out
    );
}

@[Link("kernel32")]
lib LibKERNEL32
  fun ReadFile = ReadFile(
    hFile : Void*,   # HANDLE
    lpBuffer : UInt8*,   # BYTE* optional, out
    nNumberOfBytesToRead : UInt32,   # DWORD
    lpNumberOfBytesRead : UInt32*,   # DWORD* optional, out
    lpOverlapped : OVERLAPPED*   # OVERLAPPED* optional, in/out
  ) : 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 ReadFileNative = Int32 Function(Pointer<Void>, Pointer<Uint8>, Uint32, Pointer<Uint32>, Pointer<Void>);
typedef ReadFileDart = int Function(Pointer<Void>, Pointer<Uint8>, int, Pointer<Uint32>, Pointer<Void>);
final ReadFile = DynamicLibrary.open('KERNEL32.dll')
    .lookupFunction<ReadFileNative, ReadFileDart>('ReadFile');
// hFile : HANDLE -> Pointer<Void>
// lpBuffer : BYTE* optional, out -> Pointer<Uint8>
// nNumberOfBytesToRead : DWORD -> Uint32
// lpNumberOfBytesRead : DWORD* optional, out -> Pointer<Uint32>
// lpOverlapped : OVERLAPPED* optional, in/out -> Pointer<Void>
// 文字列は package:ffi の "...".toNativeUtf16()/toNativeUtf8() で変換。

{$mode objfpc}{$H+}
function ReadFile(
  hFile: THandle;   // HANDLE
  lpBuffer: Pointer;   // BYTE* optional, out
  nNumberOfBytesToRead: DWORD;   // DWORD
  lpNumberOfBytesRead: Pointer;   // DWORD* optional, out
  lpOverlapped: Pointer   // OVERLAPPED* optional, in/out
): BOOL; stdcall;
  external 'KERNEL32.dll' name 'ReadFile';

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

foreign import stdcall safe "ReadFile"
  c_ReadFile :: Ptr () -> Ptr Word8 -> Word32 -> Ptr Word32 -> Ptr () -> IO CInt
-- hFile : HANDLE -> Ptr ()
-- lpBuffer : BYTE* optional, out -> Ptr Word8
-- nNumberOfBytesToRead : DWORD -> Word32
-- lpNumberOfBytesRead : DWORD* optional, out -> Ptr Word32
-- lpOverlapped : OVERLAPPED* optional, in/out -> Ptr ()
-- 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 readfile =
  foreign "ReadFile"
    ((ptr void) @-> (ptr uint8_t) @-> uint32_t @-> (ptr uint32_t) @-> (ptr void) @-> returning int32_t)
(* hFile : HANDLE -> (ptr void) *)
(* lpBuffer : BYTE* optional, out -> (ptr uint8_t) *)
(* nNumberOfBytesToRead : DWORD -> uint32_t *)
(* lpNumberOfBytesRead : DWORD* optional, out -> (ptr uint32_t) *)
(* lpOverlapped : OVERLAPPED* optional, in/out -> (ptr void) *)
(* 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 ("ReadFile" read-file :convention :stdcall) :int32
  (h-file :pointer)   ; HANDLE
  (lp-buffer :pointer)   ; BYTE* optional, out
  (n-number-of-bytes-to-read :uint32)   ; DWORD
  (lp-number-of-bytes-read :pointer)   ; DWORD* optional, out
  (lp-overlapped :pointer))   ; OVERLAPPED* optional, in/out
; isize/usize(INT_PTR/SIZE_T)は x64 前提で :int64/:uint64。x86 では :int32/:uint32。

use Win32::API;
my $ReadFile = Win32::API::More->new('KERNEL32',
    'BOOL ReadFile(HANDLE hFile, LPVOID lpBuffer, DWORD nNumberOfBytesToRead, LPVOID lpNumberOfBytesRead, LPVOID lpOverlapped)');
# my $ret = $ReadFile->Call($hFile, $lpBuffer, $nNumberOfBytesToRead, $lpNumberOfBytesRead, $lpOverlapped);
# hFile : HANDLE -> HANDLE
# lpBuffer : BYTE* optional, out -> LPVOID
# nNumberOfBytesToRead : DWORD -> DWORD
# lpNumberOfBytesRead : DWORD* optional, out -> LPVOID
# lpOverlapped : OVERLAPPED* optional, in/out -> LPVOID
# 値渡し構造体は pack() した文字列、または Win32::API::Struct を使用。