HttpSendRequestW

// WININET.dll  (Unicode / -W)
#include <windows.h>

BOOL HttpSendRequestW(
    void* hRequest,
    LPCWSTR lpszHeaders,   // optional
    DWORD dwHeadersLength,
    void* lpOptional,   // optional
    DWORD dwOptionalLength
);

<DllImport("WININET.dll", CharSet:=CharSet.Unicode, SetLastError:=True, ExactSpelling:=True)>
Public Shared Function HttpSendRequestW(
    hRequest As IntPtr,   ' void*
    <MarshalAs(UnmanagedType.LPWStr)> lpszHeaders As String,   ' LPCWSTR optional
    dwHeadersLength As UInteger,   ' DWORD
    lpOptional As IntPtr,   ' void* optional
    dwOptionalLength As UInteger   ' DWORD
) As <MarshalAs(UnmanagedType.Bool)> Boolean
End Function

' hRequest : void*
' lpszHeaders : LPCWSTR optional
' dwHeadersLength : DWORD
' lpOptional : void* optional
' dwOptionalLength : DWORD
Declare PtrSafe Function HttpSendRequestW Lib "wininet" ( _
    ByVal hRequest As LongPtr, _
    ByVal lpszHeaders As LongPtr, _
    ByVal dwHeadersLength As Long, _
    ByVal lpOptional As LongPtr, _
    ByVal dwOptionalLength As Long) As Long
' Unicode(W): 文字列は ByVal As LongPtr とし StrPtr(unicodeStr) を渡す
' VBA7前提(PtrSafe)。32bit Office では LongPtr→Long。Integer=16bit / Long=32bit / LongLong=64bit。

import ctypes
from ctypes import wintypes

HttpSendRequestW = ctypes.windll.wininet.HttpSendRequestW
HttpSendRequestW.restype = wintypes.BOOL
HttpSendRequestW.argtypes = [
    ctypes.POINTER(None),  # hRequest : void*
    wintypes.LPCWSTR,  # lpszHeaders : LPCWSTR optional
    wintypes.DWORD,  # dwHeadersLength : DWORD
    ctypes.POINTER(None),  # lpOptional : void* optional
    wintypes.DWORD,  # dwOptionalLength : DWORD
]
# GetLastError: use ctypes.GetLastError() (or ctypes.WinDLL(use_last_error=True))

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('WININET.dll')
HttpSendRequestW = Fiddle::Function.new(
  lib['HttpSendRequestW'],
  [
    Fiddle::TYPE_VOIDP,  # hRequest : void*
    Fiddle::TYPE_VOIDP,  # lpszHeaders : LPCWSTR optional
    -Fiddle::TYPE_INT,  # dwHeadersLength : DWORD
    Fiddle::TYPE_VOIDP,  # lpOptional : void* optional
    -Fiddle::TYPE_INT,  # dwOptionalLength : DWORD
  ],
  Fiddle::TYPE_INT)
# Wide strings: pass str.encode("UTF-16LE") + "\x00\x00"

#[link(name = "wininet")]
extern "system" {
    fn HttpSendRequestW(
        hRequest: *mut (),  // void*
        lpszHeaders: *const u16,  // LPCWSTR optional
        dwHeadersLength: u32,  // DWORD
        lpOptional: *mut (),  // void* optional
        dwOptionalLength: u32  // DWORD
    ) -> i32;
}
// crates: windows-sys provides ready-made bindings for this API.

$sig = @"
[return: MarshalAs(UnmanagedType.Bool)]
[DllImport("WININET.dll", CharSet = CharSet.Unicode, SetLastError = true)]
public static extern bool HttpSendRequestW(IntPtr hRequest, [MarshalAs(UnmanagedType.LPWStr)] string lpszHeaders, uint dwHeadersLength, IntPtr lpOptional, uint dwOptionalLength);
"@
$api = Add-Type -MemberDefinition $sig -Name 'WININET_HttpSendRequestW' -Namespace Win32 -PassThru
# $api::HttpSendRequestW(hRequest, lpszHeaders, dwHeadersLength, lpOptional, dwOptionalLength)

#uselib "WININET.dll"
#func global HttpSendRequestW "HttpSendRequestW" wptr, wptr, wptr, wptr, wptr
; HttpSendRequestW hRequest, lpszHeaders, dwHeadersLength, lpOptional, dwOptionalLength   ; 戻り値は stat
; hRequest : void* -> "wptr"
; lpszHeaders : LPCWSTR optional -> "wptr"
; dwHeadersLength : DWORD -> "wptr"
; lpOptional : void* optional -> "wptr"
; dwOptionalLength : DWORD -> "wptr"
; ※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 "WININET.dll"
#cfunc global HttpSendRequestW "HttpSendRequestW" sptr, wstr, int, sptr, int
; res = HttpSendRequestW(hRequest, lpszHeaders, dwHeadersLength, lpOptional, dwOptionalLength)
; hRequest : void* -> "sptr"
; lpszHeaders : LPCWSTR optional -> "wstr"
; dwHeadersLength : DWORD -> "int"
; lpOptional : void* optional -> "sptr"
; dwOptionalLength : DWORD -> "int"

; BOOL HttpSendRequestW(void* hRequest, LPCWSTR lpszHeaders, DWORD dwHeadersLength, void* lpOptional, DWORD dwOptionalLength)
#uselib "WININET.dll"
#cfunc global HttpSendRequestW "HttpSendRequestW" intptr, wstr, int, intptr, int
; res = HttpSendRequestW(hRequest, lpszHeaders, dwHeadersLength, lpOptional, dwOptionalLength)
; hRequest : void* -> "intptr"
; lpszHeaders : LPCWSTR optional -> "wstr"
; dwHeadersLength : DWORD -> "int"
; lpOptional : void* optional -> "intptr"
; dwOptionalLength : DWORD -> "int"

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

var (
	wininet = windows.NewLazySystemDLL("WININET.dll")
	procHttpSendRequestW = wininet.NewProc("HttpSendRequestW")
)

// hRequest (void*), lpszHeaders (LPCWSTR optional), dwHeadersLength (DWORD), lpOptional (void* optional), dwOptionalLength (DWORD)
r1, _, err := procHttpSendRequestW.Call(
	uintptr(hRequest),
	uintptr(unsafe.Pointer(windows.StringToUTF16Ptr(lpszHeaders))),
	uintptr(dwHeadersLength),
	uintptr(lpOptional),
	uintptr(dwOptionalLength),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // BOOL

function HttpSendRequestW(
  hRequest: Pointer;   // void*
  lpszHeaders: PWideChar;   // LPCWSTR optional
  dwHeadersLength: DWORD;   // DWORD
  lpOptional: Pointer;   // void* optional
  dwOptionalLength: DWORD   // DWORD
): BOOL; stdcall;
  external 'WININET.dll' name 'HttpSendRequestW';

result := DllCall("WININET\HttpSendRequestW"
    , "Ptr", hRequest   ; void*
    , "WStr", lpszHeaders   ; LPCWSTR optional
    , "UInt", dwHeadersLength   ; DWORD
    , "Ptr", lpOptional   ; void* optional
    , "UInt", dwOptionalLength   ; DWORD
    , "Int")   ; return: BOOL

●HttpSendRequestW(hRequest, lpszHeaders, dwHeadersLength, lpOptional, dwOptionalLength) = DLL("WININET.dll", "bool HttpSendRequestW(void*, char*, dword, void*, dword)")
# 呼び出し: HttpSendRequestW(hRequest, lpszHeaders, dwHeadersLength, lpOptional, dwOptionalLength)
# hRequest : void* -> "void*"
# lpszHeaders : LPCWSTR optional -> "char*"
# dwHeadersLength : DWORD -> "dword"
# lpOptional : void* optional -> "void*"
# dwOptionalLength : DWORD -> "dword"
# 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)。
# ※-W(Unicode)関数。なでしこ1はANSIのため -A 版の利用を推奨。

const std = @import("std");

extern "wininet" fn HttpSendRequestW(
    hRequest: ?*anyopaque, // void*
    lpszHeaders: [*c]const u16, // LPCWSTR optional
    dwHeadersLength: u32, // DWORD
    lpOptional: ?*anyopaque, // void* optional
    dwOptionalLength: u32 // DWORD
) callconv(std.os.windows.WINAPI) i32;
// Unicode(-W): UTF-16LE のヌル終端バッファ([*c]const u16)を渡す。

proc HttpSendRequestW(
    hRequest: pointer,  # void*
    lpszHeaders: WideCString,  # LPCWSTR optional
    dwHeadersLength: uint32,  # DWORD
    lpOptional: pointer,  # void* optional
    dwOptionalLength: uint32  # DWORD
): int32 {.importc: "HttpSendRequestW", stdcall, dynlib: "WININET.dll".}
# Unicode(-W): WideCString は newWideCString("...") で生成。

pragma(lib, "wininet");
extern(Windows)
int HttpSendRequestW(
    void* hRequest,   // void*
    const(wchar)* lpszHeaders,   // LPCWSTR optional
    uint dwHeadersLength,   // DWORD
    void* lpOptional,   // void* optional
    uint dwOptionalLength   // DWORD
);

ccall((:HttpSendRequestW, "WININET.dll"), stdcall, Int32,
      (Ptr{Cvoid}, Cwstring, UInt32, Ptr{Cvoid}, UInt32),
      hRequest, lpszHeaders, dwHeadersLength, lpOptional, dwOptionalLength)
# hRequest : void* -> Ptr{Cvoid}
# lpszHeaders : LPCWSTR optional -> Cwstring
# dwHeadersLength : DWORD -> UInt32
# lpOptional : void* optional -> Ptr{Cvoid}
# dwOptionalLength : DWORD -> UInt32
# stdcall は 32bit のみ意味を持つ(x64 では無視)。
# Unicode(-W): Cwstring には transcode(UInt16, "...") 等で UTF-16 を渡す。

local ffi = require("ffi")
ffi.cdef[[
int32_t HttpSendRequestW(
    void* hRequest,
    const uint16_t* lpszHeaders,
    uint32_t dwHeadersLength,
    void* lpOptional,
    uint32_t dwOptionalLength);
]]
local wininet = ffi.load("wininet")
-- wininet.HttpSendRequestW(hRequest, lpszHeaders, dwHeadersLength, lpOptional, dwOptionalLength)
-- hRequest : void*
-- lpszHeaders : LPCWSTR optional
-- dwHeadersLength : DWORD
-- lpOptional : void* optional
-- dwOptionalLength : DWORD
-- 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。
-- Unicode(-W): uint16_t* には UTF-16LE のバッファ(ffi.new("uint16_t[?]", ...))を渡す。

const koffi = require('koffi');
const lib = koffi.load('WININET.dll');
const HttpSendRequestW = lib.func('__stdcall', 'HttpSendRequestW', 'int32_t', ['void *', 'str16', 'uint32_t', 'void *', 'uint32_t']);
// HttpSendRequestW(hRequest, lpszHeaders, dwHeadersLength, lpOptional, dwOptionalLength)
// hRequest : void* -> 'void *'
// lpszHeaders : LPCWSTR optional -> 'str16'
// dwHeadersLength : DWORD -> 'uint32_t'
// lpOptional : void* optional -> 'void *'
// dwOptionalLength : DWORD -> 'uint32_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("WININET.dll", {
  HttpSendRequestW: { parameters: ["pointer", "buffer", "u32", "pointer", "u32"], result: "i32" },
});
// lib.symbols.HttpSendRequestW(hRequest, lpszHeaders, dwHeadersLength, lpOptional, dwOptionalLength)
// hRequest : void* -> "pointer"
// lpszHeaders : LPCWSTR optional -> "buffer"
// dwHeadersLength : DWORD -> "u32"
// lpOptional : void* optional -> "pointer"
// dwOptionalLength : DWORD -> "u32"
// 文字列は "buffer"。Unicode(-W) は new TextEncoder() ではなく UTF-16LE のバイト列(末尾に \x00\x00)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 HttpSendRequestW(
    void* hRequest,
    const uint16_t* lpszHeaders,
    uint32_t dwHeadersLength,
    void* lpOptional,
    uint32_t dwOptionalLength);
C, "WININET.dll");
// $ffi->HttpSendRequestW(hRequest, lpszHeaders, dwHeadersLength, lpOptional, dwOptionalLength);
// hRequest : void*
// lpszHeaders : LPCWSTR optional
// dwHeadersLength : DWORD
// lpOptional : void* optional
// dwOptionalLength : DWORD
// 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 Wininet extends StdCallLibrary {
    Wininet INSTANCE = Native.load("wininet", Wininet.class, W32APIOptions.UNICODE_OPTIONS);
    boolean HttpSendRequestW(
        Pointer hRequest,   // void*
        WString lpszHeaders,   // LPCWSTR optional
        int dwHeadersLength,   // DWORD
        Pointer lpOptional,   // void* optional
        int dwOptionalLength   // DWORD
    );
}
// Unicode(-W): WString(入力)/char[](出力)で UTF-16 をマーシャリング。

@[Link("wininet")]
lib LibWININET
  fun HttpSendRequestW = HttpSendRequestW(
    hRequest : Void*,   # void*
    lpszHeaders : UInt16*,   # LPCWSTR optional
    dwHeadersLength : UInt32,   # DWORD
    lpOptional : Void*,   # void* optional
    dwOptionalLength : UInt32   # DWORD
  ) : 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 HttpSendRequestWNative = Int32 Function(Pointer<Void>, Pointer<Utf16>, Uint32, Pointer<Void>, Uint32);
typedef HttpSendRequestWDart = int Function(Pointer<Void>, Pointer<Utf16>, int, Pointer<Void>, int);
final HttpSendRequestW = DynamicLibrary.open('WININET.dll')
    .lookupFunction<HttpSendRequestWNative, HttpSendRequestWDart>('HttpSendRequestW');
// hRequest : void* -> Pointer<Void>
// lpszHeaders : LPCWSTR optional -> Pointer<Utf16>
// dwHeadersLength : DWORD -> Uint32
// lpOptional : void* optional -> Pointer<Void>
// dwOptionalLength : DWORD -> Uint32
// 文字列は package:ffi の "...".toNativeUtf16()/toNativeUtf8() で変換。

{$mode objfpc}{$H+}
function HttpSendRequestW(
  hRequest: Pointer;   // void*
  lpszHeaders: PWideChar;   // LPCWSTR optional
  dwHeadersLength: DWORD;   // DWORD
  lpOptional: Pointer;   // void* optional
  dwOptionalLength: DWORD   // DWORD
): BOOL; stdcall;
  external 'WININET.dll' name 'HttpSendRequestW';

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

foreign import stdcall safe "HttpSendRequestW"
  c_HttpSendRequestW :: Ptr () -> CWString -> Word32 -> Ptr () -> Word32 -> IO CInt
-- hRequest : void* -> Ptr ()
-- lpszHeaders : LPCWSTR optional -> CWString
-- dwHeadersLength : DWORD -> Word32
-- lpOptional : void* optional -> Ptr ()
-- dwOptionalLength : DWORD -> Word32
-- 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 httpsendrequestw =
  foreign "HttpSendRequestW"
    ((ptr void) @-> (ptr uint16_t) @-> uint32_t @-> (ptr void) @-> uint32_t @-> returning int32_t)
(* hRequest : void* -> (ptr void) *)
(* lpszHeaders : LPCWSTR optional -> (ptr uint16_t) *)
(* dwHeadersLength : DWORD -> uint32_t *)
(* lpOptional : void* optional -> (ptr void) *)
(* dwOptionalLength : DWORD -> uint32_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 wininet (t "WININET.dll"))
(cffi:use-foreign-library wininet)

(cffi:defcfun ("HttpSendRequestW" http-send-request-w :convention :stdcall) :int32
  (h-request :pointer)   ; void*
  (lpsz-headers (:string :encoding :utf-16le))   ; LPCWSTR optional
  (dw-headers-length :uint32)   ; DWORD
  (lp-optional :pointer)   ; void* optional
  (dw-optional-length :uint32))   ; DWORD
; isize/usize(INT_PTR/SIZE_T)は x64 前提で :int64/:uint64。x86 では :int32/:uint32。

use Win32::API;
my $HttpSendRequestW = Win32::API::More->new('WININET',
    'BOOL HttpSendRequestW(LPVOID hRequest, LPCWSTR lpszHeaders, DWORD dwHeadersLength, LPVOID lpOptional, DWORD dwOptionalLength)');
# my $ret = $HttpSendRequestW->Call($hRequest, $lpszHeaders, $dwHeadersLength, $lpOptional, $dwOptionalLength);
# hRequest : void* -> LPVOID
# lpszHeaders : LPCWSTR optional -> LPCWSTR
# dwHeadersLength : DWORD -> DWORD
# lpOptional : void* optional -> LPVOID
# dwOptionalLength : DWORD -> DWORD
# 値渡し構造体は pack() した文字列、または Win32::API::Struct を使用。
# Unicode(-W): LPCWSTR/LPWSTR は Win32::API が UTF-16 変換を行う。