InternetCombineUrlW

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

BOOL InternetCombineUrlW(
    LPCWSTR lpszBaseUrl,
    LPCWSTR lpszRelativeUrl,
    LPWSTR lpszBuffer,
    DWORD* lpdwBufferLength,
    DWORD dwFlags
);

<DllImport("WININET.dll", CharSet:=CharSet.Unicode, SetLastError:=True, ExactSpelling:=True)>
Public Shared Function InternetCombineUrlW(
    <MarshalAs(UnmanagedType.LPWStr)> lpszBaseUrl As String,   ' LPCWSTR
    <MarshalAs(UnmanagedType.LPWStr)> lpszRelativeUrl As String,   ' LPCWSTR
    <MarshalAs(UnmanagedType.LPWStr)> lpszBuffer As System.Text.StringBuilder,   ' LPWSTR out
    ByRef lpdwBufferLength As UInteger,   ' DWORD* in/out
    dwFlags As UInteger   ' DWORD
) As <MarshalAs(UnmanagedType.Bool)> Boolean
End Function

' lpszBaseUrl : LPCWSTR
' lpszRelativeUrl : LPCWSTR
' lpszBuffer : LPWSTR out
' lpdwBufferLength : DWORD* in/out
' dwFlags : DWORD
Declare PtrSafe Function InternetCombineUrlW Lib "wininet" ( _
    ByVal lpszBaseUrl As LongPtr, _
    ByVal lpszRelativeUrl As LongPtr, _
    ByVal lpszBuffer As LongPtr, _
    ByRef lpdwBufferLength As Long, _
    ByVal dwFlags 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

InternetCombineUrlW = ctypes.windll.wininet.InternetCombineUrlW
InternetCombineUrlW.restype = wintypes.BOOL
InternetCombineUrlW.argtypes = [
    wintypes.LPCWSTR,  # lpszBaseUrl : LPCWSTR
    wintypes.LPCWSTR,  # lpszRelativeUrl : LPCWSTR
    wintypes.LPWSTR,  # lpszBuffer : LPWSTR out
    ctypes.POINTER(wintypes.DWORD),  # lpdwBufferLength : DWORD* in/out
    wintypes.DWORD,  # dwFlags : DWORD
]
# GetLastError: use ctypes.GetLastError() (or ctypes.WinDLL(use_last_error=True))

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('WININET.dll')
InternetCombineUrlW = Fiddle::Function.new(
  lib['InternetCombineUrlW'],
  [
    Fiddle::TYPE_VOIDP,  # lpszBaseUrl : LPCWSTR
    Fiddle::TYPE_VOIDP,  # lpszRelativeUrl : LPCWSTR
    Fiddle::TYPE_VOIDP,  # lpszBuffer : LPWSTR out
    Fiddle::TYPE_VOIDP,  # lpdwBufferLength : DWORD* in/out
    -Fiddle::TYPE_INT,  # dwFlags : DWORD
  ],
  Fiddle::TYPE_INT)
# Wide strings: pass str.encode("UTF-16LE") + "\x00\x00"

#[link(name = "wininet")]
extern "system" {
    fn InternetCombineUrlW(
        lpszBaseUrl: *const u16,  // LPCWSTR
        lpszRelativeUrl: *const u16,  // LPCWSTR
        lpszBuffer: *mut u16,  // LPWSTR out
        lpdwBufferLength: *mut u32,  // DWORD* in/out
        dwFlags: 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 InternetCombineUrlW([MarshalAs(UnmanagedType.LPWStr)] string lpszBaseUrl, [MarshalAs(UnmanagedType.LPWStr)] string lpszRelativeUrl, [MarshalAs(UnmanagedType.LPWStr)] System.Text.StringBuilder lpszBuffer, ref uint lpdwBufferLength, uint dwFlags);
"@
$api = Add-Type -MemberDefinition $sig -Name 'WININET_InternetCombineUrlW' -Namespace Win32 -PassThru
# $api::InternetCombineUrlW(lpszBaseUrl, lpszRelativeUrl, lpszBuffer, lpdwBufferLength, dwFlags)

#uselib "WININET.dll"
#func global InternetCombineUrlW "InternetCombineUrlW" wptr, wptr, wptr, wptr, wptr
; InternetCombineUrlW lpszBaseUrl, lpszRelativeUrl, varptr(lpszBuffer), varptr(lpdwBufferLength), dwFlags   ; 戻り値は stat
; lpszBaseUrl : LPCWSTR -> "wptr"
; lpszRelativeUrl : LPCWSTR -> "wptr"
; lpszBuffer : LPWSTR out -> "wptr"
; lpdwBufferLength : DWORD* in/out -> "wptr"
; dwFlags : 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。

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

var (
	wininet = windows.NewLazySystemDLL("WININET.dll")
	procInternetCombineUrlW = wininet.NewProc("InternetCombineUrlW")
)

// lpszBaseUrl (LPCWSTR), lpszRelativeUrl (LPCWSTR), lpszBuffer (LPWSTR out), lpdwBufferLength (DWORD* in/out), dwFlags (DWORD)
r1, _, err := procInternetCombineUrlW.Call(
	uintptr(unsafe.Pointer(windows.StringToUTF16Ptr(lpszBaseUrl))),
	uintptr(unsafe.Pointer(windows.StringToUTF16Ptr(lpszRelativeUrl))),
	uintptr(lpszBuffer),
	uintptr(lpdwBufferLength),
	uintptr(dwFlags),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // BOOL

function InternetCombineUrlW(
  lpszBaseUrl: PWideChar;   // LPCWSTR
  lpszRelativeUrl: PWideChar;   // LPCWSTR
  lpszBuffer: PWideChar;   // LPWSTR out
  lpdwBufferLength: Pointer;   // DWORD* in/out
  dwFlags: DWORD   // DWORD
): BOOL; stdcall;
  external 'WININET.dll' name 'InternetCombineUrlW';

result := DllCall("WININET\InternetCombineUrlW"
    , "WStr", lpszBaseUrl   ; LPCWSTR
    , "WStr", lpszRelativeUrl   ; LPCWSTR
    , "Ptr", lpszBuffer   ; LPWSTR out
    , "Ptr", lpdwBufferLength   ; DWORD* in/out
    , "UInt", dwFlags   ; DWORD
    , "Int")   ; return: BOOL

●InternetCombineUrlW(lpszBaseUrl, lpszRelativeUrl, lpszBuffer, lpdwBufferLength, dwFlags) = DLL("WININET.dll", "bool InternetCombineUrlW(char*, char*, char*, void*, dword)")
# 呼び出し: InternetCombineUrlW(lpszBaseUrl, lpszRelativeUrl, lpszBuffer, lpdwBufferLength, dwFlags)
# lpszBaseUrl : LPCWSTR -> "char*"
# lpszRelativeUrl : LPCWSTR -> "char*"
# lpszBuffer : LPWSTR out -> "char*"
# lpdwBufferLength : DWORD* in/out -> "void*"
# dwFlags : 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 InternetCombineUrlW(
    lpszBaseUrl: [*c]const u16, // LPCWSTR
    lpszRelativeUrl: [*c]const u16, // LPCWSTR
    lpszBuffer: [*c]u16, // LPWSTR out
    lpdwBufferLength: [*c]u32, // DWORD* in/out
    dwFlags: 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 InternetCombineUrlW(
    lpszBaseUrl: WideCString,  # LPCWSTR
    lpszRelativeUrl: WideCString,  # LPCWSTR
    lpszBuffer: ptr uint16,  # LPWSTR out
    lpdwBufferLength: ptr uint32,  # DWORD* in/out
    dwFlags: uint32  # DWORD
): int32 {.importc: "InternetCombineUrlW", stdcall, dynlib: "WININET.dll".}
# Unicode(-W): WideCString は newWideCString("...") で生成。

pragma(lib, "wininet");
extern(Windows)
int InternetCombineUrlW(
    const(wchar)* lpszBaseUrl,   // LPCWSTR
    const(wchar)* lpszRelativeUrl,   // LPCWSTR
    wchar* lpszBuffer,   // LPWSTR out
    uint* lpdwBufferLength,   // DWORD* in/out
    uint dwFlags   // DWORD
);

ccall((:InternetCombineUrlW, "WININET.dll"), stdcall, Int32,
      (Cwstring, Cwstring, Ptr{UInt16}, Ptr{UInt32}, UInt32),
      lpszBaseUrl, lpszRelativeUrl, lpszBuffer, lpdwBufferLength, dwFlags)
# lpszBaseUrl : LPCWSTR -> Cwstring
# lpszRelativeUrl : LPCWSTR -> Cwstring
# lpszBuffer : LPWSTR out -> Ptr{UInt16}
# lpdwBufferLength : DWORD* in/out -> Ptr{UInt32}
# dwFlags : 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 InternetCombineUrlW(
    const uint16_t* lpszBaseUrl,
    const uint16_t* lpszRelativeUrl,
    uint16_t* lpszBuffer,
    uint32_t* lpdwBufferLength,
    uint32_t dwFlags);
]]
local wininet = ffi.load("wininet")
-- wininet.InternetCombineUrlW(lpszBaseUrl, lpszRelativeUrl, lpszBuffer, lpdwBufferLength, dwFlags)
-- lpszBaseUrl : LPCWSTR
-- lpszRelativeUrl : LPCWSTR
-- lpszBuffer : LPWSTR out
-- lpdwBufferLength : DWORD* in/out
-- dwFlags : 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 InternetCombineUrlW = lib.func('__stdcall', 'InternetCombineUrlW', 'int32_t', ['str16', 'str16', 'uint16_t *', 'uint32_t *', 'uint32_t']);
// InternetCombineUrlW(lpszBaseUrl, lpszRelativeUrl, lpszBuffer, lpdwBufferLength, dwFlags)
// lpszBaseUrl : LPCWSTR -> 'str16'
// lpszRelativeUrl : LPCWSTR -> 'str16'
// lpszBuffer : LPWSTR out -> 'uint16_t *'
// lpdwBufferLength : DWORD* in/out -> 'uint32_t *'
// dwFlags : 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", {
  InternetCombineUrlW: { parameters: ["buffer", "buffer", "buffer", "pointer", "u32"], result: "i32" },
});
// lib.symbols.InternetCombineUrlW(lpszBaseUrl, lpszRelativeUrl, lpszBuffer, lpdwBufferLength, dwFlags)
// lpszBaseUrl : LPCWSTR -> "buffer"
// lpszRelativeUrl : LPCWSTR -> "buffer"
// lpszBuffer : LPWSTR out -> "buffer"
// lpdwBufferLength : DWORD* in/out -> "pointer"
// dwFlags : 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 InternetCombineUrlW(
    const uint16_t* lpszBaseUrl,
    const uint16_t* lpszRelativeUrl,
    uint16_t* lpszBuffer,
    uint32_t* lpdwBufferLength,
    uint32_t dwFlags);
C, "WININET.dll");
// $ffi->InternetCombineUrlW(lpszBaseUrl, lpszRelativeUrl, lpszBuffer, lpdwBufferLength, dwFlags);
// lpszBaseUrl : LPCWSTR
// lpszRelativeUrl : LPCWSTR
// lpszBuffer : LPWSTR out
// lpdwBufferLength : DWORD* in/out
// dwFlags : 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 InternetCombineUrlW(
        WString lpszBaseUrl,   // LPCWSTR
        WString lpszRelativeUrl,   // LPCWSTR
        char[] lpszBuffer,   // LPWSTR out
        IntByReference lpdwBufferLength,   // DWORD* in/out
        int dwFlags   // 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 InternetCombineUrlW = InternetCombineUrlW(
    lpszBaseUrl : UInt16*,   # LPCWSTR
    lpszRelativeUrl : UInt16*,   # LPCWSTR
    lpszBuffer : UInt16*,   # LPWSTR out
    lpdwBufferLength : UInt32*,   # DWORD* in/out
    dwFlags : 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 InternetCombineUrlWNative = Int32 Function(Pointer<Utf16>, Pointer<Utf16>, Pointer<Utf16>, Pointer<Uint32>, Uint32);
typedef InternetCombineUrlWDart = int Function(Pointer<Utf16>, Pointer<Utf16>, Pointer<Utf16>, Pointer<Uint32>, int);
final InternetCombineUrlW = DynamicLibrary.open('WININET.dll')
    .lookupFunction<InternetCombineUrlWNative, InternetCombineUrlWDart>('InternetCombineUrlW');
// lpszBaseUrl : LPCWSTR -> Pointer<Utf16>
// lpszRelativeUrl : LPCWSTR -> Pointer<Utf16>
// lpszBuffer : LPWSTR out -> Pointer<Utf16>
// lpdwBufferLength : DWORD* in/out -> Pointer<Uint32>
// dwFlags : DWORD -> Uint32
// 文字列は package:ffi の "...".toNativeUtf16()/toNativeUtf8() で変換。

{$mode objfpc}{$H+}
function InternetCombineUrlW(
  lpszBaseUrl: PWideChar;   // LPCWSTR
  lpszRelativeUrl: PWideChar;   // LPCWSTR
  lpszBuffer: PWideChar;   // LPWSTR out
  lpdwBufferLength: Pointer;   // DWORD* in/out
  dwFlags: DWORD   // DWORD
): BOOL; stdcall;
  external 'WININET.dll' name 'InternetCombineUrlW';

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

foreign import stdcall safe "InternetCombineUrlW"
  c_InternetCombineUrlW :: CWString -> CWString -> CWString -> Ptr Word32 -> Word32 -> IO CInt
-- lpszBaseUrl : LPCWSTR -> CWString
-- lpszRelativeUrl : LPCWSTR -> CWString
-- lpszBuffer : LPWSTR out -> CWString
-- lpdwBufferLength : DWORD* in/out -> Ptr Word32
-- dwFlags : 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 internetcombineurlw =
  foreign "InternetCombineUrlW"
    ((ptr uint16_t) @-> (ptr uint16_t) @-> (ptr uint16_t) @-> (ptr uint32_t) @-> uint32_t @-> returning int32_t)
(* lpszBaseUrl : LPCWSTR -> (ptr uint16_t) *)
(* lpszRelativeUrl : LPCWSTR -> (ptr uint16_t) *)
(* lpszBuffer : LPWSTR out -> (ptr uint16_t) *)
(* lpdwBufferLength : DWORD* in/out -> (ptr uint32_t) *)
(* dwFlags : 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 ("InternetCombineUrlW" internet-combine-url-w :convention :stdcall) :int32
  (lpsz-base-url (:string :encoding :utf-16le))   ; LPCWSTR
  (lpsz-relative-url (:string :encoding :utf-16le))   ; LPCWSTR
  (lpsz-buffer :pointer)   ; LPWSTR out
  (lpdw-buffer-length :pointer)   ; DWORD* in/out
  (dw-flags :uint32))   ; DWORD
; isize/usize(INT_PTR/SIZE_T)は x64 前提で :int64/:uint64。x86 では :int32/:uint32。

use Win32::API;
my $InternetCombineUrlW = Win32::API::More->new('WININET',
    'BOOL InternetCombineUrlW(LPCWSTR lpszBaseUrl, LPCWSTR lpszRelativeUrl, LPWSTR lpszBuffer, LPVOID lpdwBufferLength, DWORD dwFlags)');
# my $ret = $InternetCombineUrlW->Call($lpszBaseUrl, $lpszRelativeUrl, $lpszBuffer, $lpdwBufferLength, $dwFlags);
# lpszBaseUrl : LPCWSTR -> LPCWSTR
# lpszRelativeUrl : LPCWSTR -> LPCWSTR
# lpszBuffer : LPWSTR out -> LPWSTR
# lpdwBufferLength : DWORD* in/out -> LPVOID
# dwFlags : 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。