WsWriteChars

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

HRESULT WsWriteChars(
    WS_XML_WRITER* writer,
    LPCWSTR chars,
    DWORD charCount,
    WS_ERROR* error   // optional
);

<DllImport("webservices.dll", ExactSpelling:=True)>
Public Shared Function WsWriteChars(
    ByRef writer As IntPtr,   ' WS_XML_WRITER*
    <MarshalAs(UnmanagedType.LPWStr)> chars As String,   ' LPCWSTR
    charCount As UInteger,   ' DWORD
    [error] As IntPtr   ' WS_ERROR* optional
) As Integer
End Function

' writer : WS_XML_WRITER*
' chars : LPCWSTR
' charCount : DWORD
' error : WS_ERROR* optional
Declare PtrSafe Function WsWriteChars Lib "webservices" ( _
    ByRef writer As LongPtr, _
    ByVal chars As LongPtr, _
    ByVal charCount 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

WsWriteChars = ctypes.windll.webservices.WsWriteChars
WsWriteChars.restype = ctypes.c_int
WsWriteChars.argtypes = [
    ctypes.c_void_p,  # writer : WS_XML_WRITER*
    wintypes.LPCWSTR,  # chars : LPCWSTR
    wintypes.DWORD,  # charCount : DWORD
    ctypes.c_void_p,  # error : WS_ERROR* optional
]

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('webservices.dll')
WsWriteChars = Fiddle::Function.new(
  lib['WsWriteChars'],
  [
    Fiddle::TYPE_VOIDP,  # writer : WS_XML_WRITER*
    Fiddle::TYPE_VOIDP,  # chars : LPCWSTR
    -Fiddle::TYPE_INT,  # charCount : DWORD
    Fiddle::TYPE_VOIDP,  # error : WS_ERROR* optional
  ],
  Fiddle::TYPE_INT)

#[link(name = "webservices")]
extern "system" {
    fn WsWriteChars(
        writer: *mut isize,  // WS_XML_WRITER*
        chars: *const u16,  // LPCWSTR
        charCount: u32,  // DWORD
        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 WsWriteChars(ref IntPtr writer, [MarshalAs(UnmanagedType.LPWStr)] string chars, uint charCount, IntPtr error);
"@
$api = Add-Type -MemberDefinition $sig -Name 'webservices_WsWriteChars' -Namespace Win32 -PassThru
# $api::WsWriteChars(writer, chars, charCount, error)

#uselib "webservices.dll"
#func global WsWriteChars "WsWriteChars" sptr, sptr, sptr, sptr
; WsWriteChars varptr(writer), chars, charCount, varptr(error)   ; 戻り値は stat
; writer : WS_XML_WRITER* -> "sptr"
; chars : LPCWSTR -> "sptr"
; charCount : DWORD -> "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")
	procWsWriteChars = webservices.NewProc("WsWriteChars")
)

// writer (WS_XML_WRITER*), chars (LPCWSTR), charCount (DWORD), error (WS_ERROR* optional)
r1, _, err := procWsWriteChars.Call(
	uintptr(writer),
	uintptr(unsafe.Pointer(windows.StringToUTF16Ptr(chars))),
	uintptr(charCount),
	uintptr(error),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // HRESULT

function WsWriteChars(
  writer: Pointer;   // WS_XML_WRITER*
  chars: PWideChar;   // LPCWSTR
  charCount: DWORD;   // DWORD
  error: Pointer   // WS_ERROR* optional
): Integer; stdcall;
  external 'webservices.dll' name 'WsWriteChars';

result := DllCall("webservices\WsWriteChars"
    , "Ptr", writer   ; WS_XML_WRITER*
    , "WStr", chars   ; LPCWSTR
    , "UInt", charCount   ; DWORD
    , "Ptr", error   ; WS_ERROR* optional
    , "Int")   ; return: HRESULT

●WsWriteChars(writer, chars, charCount, error) = DLL("webservices.dll", "int WsWriteChars(void*, char*, dword, void*)")
# 呼び出し: WsWriteChars(writer, chars, charCount, error)
# writer : WS_XML_WRITER* -> "void*"
# chars : LPCWSTR -> "char*"
# charCount : DWORD -> "dword"
# 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 WsWriteChars(
    writer: [*c]isize, // WS_XML_WRITER*
    chars: [*c]const u16, // LPCWSTR
    charCount: u32, // DWORD
    error: [*c]isize // WS_ERROR* optional
) callconv(std.os.windows.WINAPI) i32;

proc WsWriteChars(
    writer: ptr int,  # WS_XML_WRITER*
    chars: WideCString,  # LPCWSTR
    charCount: uint32,  # DWORD
    error: ptr int  # WS_ERROR* optional
): int32 {.importc: "WsWriteChars", stdcall, dynlib: "webservices.dll".}

pragma(lib, "webservices");
extern(Windows)
int WsWriteChars(
    ptrdiff_t* writer,   // WS_XML_WRITER*
    const(wchar)* chars,   // LPCWSTR
    uint charCount,   // DWORD
    ptrdiff_t* error   // WS_ERROR* optional
);

ccall((:WsWriteChars, "webservices.dll"), stdcall, Int32,
      (Ptr{Int}, Cwstring, UInt32, Ptr{Int}),
      writer, chars, charCount, error)
# writer : WS_XML_WRITER* -> Ptr{Int}
# chars : LPCWSTR -> Cwstring
# charCount : DWORD -> 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 WsWriteChars(
    intptr_t* writer,
    const uint16_t* chars,
    uint32_t charCount,
    intptr_t* error);
]]
local webservices = ffi.load("webservices")
-- webservices.WsWriteChars(writer, chars, charCount, error)
-- writer : WS_XML_WRITER*
-- chars : LPCWSTR
-- charCount : DWORD
-- 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 WsWriteChars = lib.func('__stdcall', 'WsWriteChars', 'int32_t', ['intptr_t *', 'str16', 'uint32_t', 'intptr_t *']);
// WsWriteChars(writer, chars, charCount, error)
// writer : WS_XML_WRITER* -> 'intptr_t *'
// chars : LPCWSTR -> 'str16'
// charCount : DWORD -> '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", {
  WsWriteChars: { parameters: ["pointer", "buffer", "u32", "pointer"], result: "i32" },
});
// lib.symbols.WsWriteChars(writer, chars, charCount, error)
// writer : WS_XML_WRITER* -> "pointer"
// chars : LPCWSTR -> "buffer"
// charCount : DWORD -> "u32"
// 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 WsWriteChars(
    intptr_t* writer,
    const uint16_t* chars,
    uint32_t charCount,
    intptr_t* error);
C, "webservices.dll");
// $ffi->WsWriteChars(writer, chars, charCount, error);
// writer : WS_XML_WRITER*
// chars : LPCWSTR
// charCount : DWORD
// 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 WsWriteChars(
        LongByReference writer,   // WS_XML_WRITER*
        WString chars,   // LPCWSTR
        int charCount,   // DWORD
        LongByReference error   // WS_ERROR* optional
    );
}

@[Link("webservices")]
lib Libwebservices
  fun WsWriteChars = WsWriteChars(
    writer : LibC::SSizeT*,   # WS_XML_WRITER*
    chars : UInt16*,   # LPCWSTR
    charCount : UInt32,   # DWORD
    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 WsWriteCharsNative = Int32 Function(Pointer<IntPtr>, Pointer<Utf16>, Uint32, Pointer<IntPtr>);
typedef WsWriteCharsDart = int Function(Pointer<IntPtr>, Pointer<Utf16>, int, Pointer<IntPtr>);
final WsWriteChars = DynamicLibrary.open('webservices.dll')
    .lookupFunction<WsWriteCharsNative, WsWriteCharsDart>('WsWriteChars');
// writer : WS_XML_WRITER* -> Pointer<IntPtr>
// chars : LPCWSTR -> Pointer<Utf16>
// charCount : DWORD -> Uint32
// error : WS_ERROR* optional -> Pointer<IntPtr>
// 文字列は package:ffi の "...".toNativeUtf16()/toNativeUtf8() で変換。

{$mode objfpc}{$H+}
function WsWriteChars(
  writer: Pointer;   // WS_XML_WRITER*
  chars: PWideChar;   // LPCWSTR
  charCount: DWORD;   // DWORD
  error: Pointer   // WS_ERROR* optional
): Integer; stdcall;
  external 'webservices.dll' name 'WsWriteChars';

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

foreign import stdcall safe "WsWriteChars"
  c_WsWriteChars :: Ptr CIntPtr -> CWString -> Word32 -> Ptr CIntPtr -> IO Int32
-- writer : WS_XML_WRITER* -> Ptr CIntPtr
-- chars : LPCWSTR -> CWString
-- charCount : DWORD -> 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 wswritechars =
  foreign "WsWriteChars"
    ((ptr intptr_t) @-> (ptr uint16_t) @-> uint32_t @-> (ptr intptr_t) @-> returning int32_t)
(* writer : WS_XML_WRITER* -> (ptr intptr_t) *)
(* chars : LPCWSTR -> (ptr uint16_t) *)
(* charCount : DWORD -> 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 ("WsWriteChars" ws-write-chars :convention :stdcall) :int32
  (writer :pointer)   ; WS_XML_WRITER*
  (chars (:string :encoding :utf-16le))   ; LPCWSTR
  (char-count :uint32)   ; DWORD
  (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 $WsWriteChars = Win32::API::More->new('webservices',
    'int WsWriteChars(LPVOID writer, LPCWSTR chars, DWORD charCount, LPVOID error)');
# my $ret = $WsWriteChars->Call($writer, $chars, $charCount, $error);
# writer : WS_XML_WRITER* -> LPVOID
# chars : LPCWSTR -> LPCWSTR
# charCount : DWORD -> DWORD
# 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。