WsReadBytes

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

HRESULT WsReadBytes(
    WS_XML_READER* reader,
    void* bytes,
    DWORD maxByteCount,
    DWORD* actualByteCount,
    WS_ERROR* error   // optional
);

<DllImport("webservices.dll", ExactSpelling:=True)>
Public Shared Function WsReadBytes(
    ByRef reader As IntPtr,   ' WS_XML_READER*
    bytes As IntPtr,   ' void* out
    maxByteCount As UInteger,   ' DWORD
    <Out> ByRef actualByteCount As UInteger,   ' DWORD* out
    [error] As IntPtr   ' WS_ERROR* optional
) As Integer
End Function

' reader : WS_XML_READER*
' bytes : void* out
' maxByteCount : DWORD
' actualByteCount : DWORD* out
' error : WS_ERROR* optional
Declare PtrSafe Function WsReadBytes Lib "webservices" ( _
    ByRef reader As LongPtr, _
    ByVal bytes As LongPtr, _
    ByVal maxByteCount As Long, _
    ByRef actualByteCount As Long, _
    ByVal error 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

WsReadBytes = ctypes.windll.webservices.WsReadBytes
WsReadBytes.restype = ctypes.c_int
WsReadBytes.argtypes = [
    ctypes.c_void_p,  # reader : WS_XML_READER*
    ctypes.POINTER(None),  # bytes : void* out
    wintypes.DWORD,  # maxByteCount : DWORD
    ctypes.POINTER(wintypes.DWORD),  # actualByteCount : DWORD* out
    ctypes.c_void_p,  # error : WS_ERROR* optional
]

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('webservices.dll')
WsReadBytes = Fiddle::Function.new(
  lib['WsReadBytes'],
  [
    Fiddle::TYPE_VOIDP,  # reader : WS_XML_READER*
    Fiddle::TYPE_VOIDP,  # bytes : void* out
    -Fiddle::TYPE_INT,  # maxByteCount : DWORD
    Fiddle::TYPE_VOIDP,  # actualByteCount : DWORD* out
    Fiddle::TYPE_VOIDP,  # error : WS_ERROR* optional
  ],
  Fiddle::TYPE_INT)

#[link(name = "webservices")]
extern "system" {
    fn WsReadBytes(
        reader: *mut isize,  // WS_XML_READER*
        bytes: *mut (),  // void* out
        maxByteCount: u32,  // DWORD
        actualByteCount: *mut u32,  // DWORD* out
        error: *mut isize  // WS_ERROR* optional
    ) -> i32;
}
// crates: windows-sys provides ready-made bindings for this API.

$sig = @"
[DllImport("webservices.dll")]
public static extern int WsReadBytes(ref IntPtr reader, IntPtr bytes, uint maxByteCount, out uint actualByteCount, IntPtr error);
"@
$api = Add-Type -MemberDefinition $sig -Name 'webservices_WsReadBytes' -Namespace Win32 -PassThru
# $api::WsReadBytes(reader, bytes, maxByteCount, actualByteCount, error)

#uselib "webservices.dll"
#func global WsReadBytes "WsReadBytes" sptr, sptr, sptr, sptr, sptr
; WsReadBytes varptr(reader), bytes, maxByteCount, varptr(actualByteCount), varptr(error)   ; 戻り値は stat
; reader : WS_XML_READER* -> "sptr"
; bytes : void* out -> "sptr"
; maxByteCount : DWORD -> "sptr"
; actualByteCount : DWORD* out -> "sptr"
; error : WS_ERROR* 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。

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

var (
	webservices = windows.NewLazySystemDLL("webservices.dll")
	procWsReadBytes = webservices.NewProc("WsReadBytes")
)

// reader (WS_XML_READER*), bytes (void* out), maxByteCount (DWORD), actualByteCount (DWORD* out), error (WS_ERROR* optional)
r1, _, err := procWsReadBytes.Call(
	uintptr(reader),
	uintptr(bytes),
	uintptr(maxByteCount),
	uintptr(actualByteCount),
	uintptr(error),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // HRESULT

function WsReadBytes(
  reader: Pointer;   // WS_XML_READER*
  bytes: Pointer;   // void* out
  maxByteCount: DWORD;   // DWORD
  actualByteCount: Pointer;   // DWORD* out
  error: Pointer   // WS_ERROR* optional
): Integer; stdcall;
  external 'webservices.dll' name 'WsReadBytes';

result := DllCall("webservices\WsReadBytes"
    , "Ptr", reader   ; WS_XML_READER*
    , "Ptr", bytes   ; void* out
    , "UInt", maxByteCount   ; DWORD
    , "Ptr", actualByteCount   ; DWORD* out
    , "Ptr", error   ; WS_ERROR* optional
    , "Int")   ; return: HRESULT

●WsReadBytes(reader, bytes, maxByteCount, actualByteCount, error) = DLL("webservices.dll", "int WsReadBytes(void*, void*, dword, void*, void*)")
# 呼び出し: WsReadBytes(reader, bytes, maxByteCount, actualByteCount, error)
# reader : WS_XML_READER* -> "void*"
# bytes : void* out -> "void*"
# maxByteCount : DWORD -> "dword"
# actualByteCount : DWORD* out -> "void*"
# error : WS_ERROR* 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)。

const std = @import("std");

extern "webservices" fn WsReadBytes(
    reader: [*c]isize, // WS_XML_READER*
    bytes: ?*anyopaque, // void* out
    maxByteCount: u32, // DWORD
    actualByteCount: [*c]u32, // DWORD* out
    error: [*c]isize // WS_ERROR* optional
) callconv(std.os.windows.WINAPI) i32;

proc WsReadBytes(
    reader: ptr int,  # WS_XML_READER*
    bytes: pointer,  # void* out
    maxByteCount: uint32,  # DWORD
    actualByteCount: ptr uint32,  # DWORD* out
    error: ptr int  # WS_ERROR* optional
): int32 {.importc: "WsReadBytes", stdcall, dynlib: "webservices.dll".}

pragma(lib, "webservices");
extern(Windows)
int WsReadBytes(
    ptrdiff_t* reader,   // WS_XML_READER*
    void* bytes,   // void* out
    uint maxByteCount,   // DWORD
    uint* actualByteCount,   // DWORD* out
    ptrdiff_t* error   // WS_ERROR* optional
);

ccall((:WsReadBytes, "webservices.dll"), stdcall, Int32,
      (Ptr{Int}, Ptr{Cvoid}, UInt32, Ptr{UInt32}, Ptr{Int}),
      reader, bytes, maxByteCount, actualByteCount, error)
# reader : WS_XML_READER* -> Ptr{Int}
# bytes : void* out -> Ptr{Cvoid}
# maxByteCount : DWORD -> UInt32
# actualByteCount : DWORD* out -> Ptr{UInt32}
# error : WS_ERROR* optional -> Ptr{Int}
# stdcall は 32bit のみ意味を持つ(x64 では無視)。

local ffi = require("ffi")
ffi.cdef[[
int32_t WsReadBytes(
    intptr_t* reader,
    void* bytes,
    uint32_t maxByteCount,
    uint32_t* actualByteCount,
    intptr_t* error);
]]
local webservices = ffi.load("webservices")
-- webservices.WsReadBytes(reader, bytes, maxByteCount, actualByteCount, error)
-- reader : WS_XML_READER*
-- bytes : void* out
-- maxByteCount : DWORD
-- actualByteCount : DWORD* out
-- error : WS_ERROR* optional
-- 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('webservices.dll');
const WsReadBytes = lib.func('__stdcall', 'WsReadBytes', 'int32_t', ['intptr_t *', 'void *', 'uint32_t', 'uint32_t *', 'intptr_t *']);
// WsReadBytes(reader, bytes, maxByteCount, actualByteCount, error)
// reader : WS_XML_READER* -> 'intptr_t *'
// bytes : void* out -> 'void *'
// maxByteCount : DWORD -> 'uint32_t'
// actualByteCount : DWORD* out -> 'uint32_t *'
// error : WS_ERROR* optional -> 'intptr_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("webservices.dll", {
  WsReadBytes: { parameters: ["pointer", "pointer", "u32", "pointer", "pointer"], result: "i32" },
});
// lib.symbols.WsReadBytes(reader, bytes, maxByteCount, actualByteCount, error)
// reader : WS_XML_READER* -> "pointer"
// bytes : void* out -> "pointer"
// maxByteCount : DWORD -> "u32"
// actualByteCount : DWORD* out -> "pointer"
// error : WS_ERROR* optional -> "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 WsReadBytes(
    intptr_t* reader,
    void* bytes,
    uint32_t maxByteCount,
    uint32_t* actualByteCount,
    intptr_t* error);
C, "webservices.dll");
// $ffi->WsReadBytes(reader, bytes, maxByteCount, actualByteCount, error);
// reader : WS_XML_READER*
// bytes : void* out
// maxByteCount : DWORD
// actualByteCount : DWORD* out
// error : WS_ERROR* optional
// 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 Webservices extends StdCallLibrary {
    Webservices INSTANCE = Native.load("webservices", Webservices.class);
    int WsReadBytes(
        LongByReference reader,   // WS_XML_READER*
        Pointer bytes,   // void* out
        int maxByteCount,   // DWORD
        IntByReference actualByteCount,   // DWORD* out
        LongByReference error   // WS_ERROR* optional
    );
}

@[Link("webservices")]
lib Libwebservices
  fun WsReadBytes = WsReadBytes(
    reader : LibC::SSizeT*,   # WS_XML_READER*
    bytes : Void*,   # void* out
    maxByteCount : UInt32,   # DWORD
    actualByteCount : UInt32*,   # DWORD* out
    error : LibC::SSizeT*   # WS_ERROR* optional
  ) : 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 WsReadBytesNative = Int32 Function(Pointer<IntPtr>, Pointer<Void>, Uint32, Pointer<Uint32>, Pointer<IntPtr>);
typedef WsReadBytesDart = int Function(Pointer<IntPtr>, Pointer<Void>, int, Pointer<Uint32>, Pointer<IntPtr>);
final WsReadBytes = DynamicLibrary.open('webservices.dll')
    .lookupFunction<WsReadBytesNative, WsReadBytesDart>('WsReadBytes');
// reader : WS_XML_READER* -> Pointer<IntPtr>
// bytes : void* out -> Pointer<Void>
// maxByteCount : DWORD -> Uint32
// actualByteCount : DWORD* out -> Pointer<Uint32>
// error : WS_ERROR* optional -> Pointer<IntPtr>
// 文字列は package:ffi の "...".toNativeUtf16()/toNativeUtf8() で変換。

{$mode objfpc}{$H+}
function WsReadBytes(
  reader: Pointer;   // WS_XML_READER*
  bytes: Pointer;   // void* out
  maxByteCount: DWORD;   // DWORD
  actualByteCount: Pointer;   // DWORD* out
  error: Pointer   // WS_ERROR* optional
): Integer; stdcall;
  external 'webservices.dll' name 'WsReadBytes';

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

foreign import stdcall safe "WsReadBytes"
  c_WsReadBytes :: Ptr CIntPtr -> Ptr () -> Word32 -> Ptr Word32 -> Ptr CIntPtr -> IO Int32
-- reader : WS_XML_READER* -> Ptr CIntPtr
-- bytes : void* out -> Ptr ()
-- maxByteCount : DWORD -> Word32
-- actualByteCount : DWORD* out -> Ptr Word32
-- error : WS_ERROR* optional -> Ptr CIntPtr
-- 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 wsreadbytes =
  foreign "WsReadBytes"
    ((ptr intptr_t) @-> (ptr void) @-> uint32_t @-> (ptr uint32_t) @-> (ptr intptr_t) @-> returning int32_t)
(* reader : WS_XML_READER* -> (ptr intptr_t) *)
(* bytes : void* out -> (ptr void) *)
(* maxByteCount : DWORD -> uint32_t *)
(* actualByteCount : DWORD* out -> (ptr uint32_t) *)
(* error : WS_ERROR* optional -> (ptr intptr_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 webservices (t "webservices.dll"))
(cffi:use-foreign-library webservices)

(cffi:defcfun ("WsReadBytes" ws-read-bytes :convention :stdcall) :int32
  (reader :pointer)   ; WS_XML_READER*
  (bytes :pointer)   ; void* out
  (max-byte-count :uint32)   ; DWORD
  (actual-byte-count :pointer)   ; DWORD* out
  (error :pointer))   ; WS_ERROR* optional
; isize/usize(INT_PTR/SIZE_T)は x64 前提で :int64/:uint64。x86 では :int32/:uint32。

use Win32::API;
my $WsReadBytes = Win32::API::More->new('webservices',
    'int WsReadBytes(LPVOID reader, LPVOID bytes, DWORD maxByteCount, LPVOID actualByteCount, LPVOID error)');
# my $ret = $WsReadBytes->Call($reader, $bytes, $maxByteCount, $actualByteCount, $error);
# reader : WS_XML_READER* -> LPVOID
# bytes : void* out -> LPVOID
# maxByteCount : DWORD -> DWORD
# actualByteCount : DWORD* out -> LPVOID
# error : WS_ERROR* optional -> LPVOID
# 値渡し構造体は pack() した文字列、または Win32::API::Struct を使用。