GopherOpenFileW

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

void* GopherOpenFileW(
    void* hConnect,
    LPCWSTR lpszLocator,
    LPCWSTR lpszView,   // optional
    DWORD dwFlags,
    UINT_PTR dwContext   // optional
);

<DllImport("WININET.dll", CharSet:=CharSet.Unicode, SetLastError:=True, ExactSpelling:=True)>
Public Shared Function GopherOpenFileW(
    hConnect As IntPtr,   ' void*
    <MarshalAs(UnmanagedType.LPWStr)> lpszLocator As String,   ' LPCWSTR
    <MarshalAs(UnmanagedType.LPWStr)> lpszView As String,   ' LPCWSTR optional
    dwFlags As UInteger,   ' DWORD
    dwContext As UIntPtr   ' UINT_PTR optional
) As IntPtr
End Function

' hConnect : void*
' lpszLocator : LPCWSTR
' lpszView : LPCWSTR optional
' dwFlags : DWORD
' dwContext : UINT_PTR optional
Declare PtrSafe Function GopherOpenFileW Lib "wininet" ( _
    ByVal hConnect As LongPtr, _
    ByVal lpszLocator As LongPtr, _
    ByVal lpszView As LongPtr, _
    ByVal dwFlags As Long, _
    ByVal dwContext As LongPtr) As LongPtr
' 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

GopherOpenFileW = ctypes.windll.wininet.GopherOpenFileW
GopherOpenFileW.restype = ctypes.c_void_p
GopherOpenFileW.argtypes = [
    ctypes.POINTER(None),  # hConnect : void*
    wintypes.LPCWSTR,  # lpszLocator : LPCWSTR
    wintypes.LPCWSTR,  # lpszView : LPCWSTR optional
    wintypes.DWORD,  # dwFlags : DWORD
    ctypes.c_size_t,  # dwContext : UINT_PTR optional
]
# GetLastError: use ctypes.GetLastError() (or ctypes.WinDLL(use_last_error=True))

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('WININET.dll')
GopherOpenFileW = Fiddle::Function.new(
  lib['GopherOpenFileW'],
  [
    Fiddle::TYPE_VOIDP,  # hConnect : void*
    Fiddle::TYPE_VOIDP,  # lpszLocator : LPCWSTR
    Fiddle::TYPE_VOIDP,  # lpszView : LPCWSTR optional
    -Fiddle::TYPE_INT,  # dwFlags : DWORD
    Fiddle::TYPE_UINTPTR_T,  # dwContext : UINT_PTR optional
  ],
  Fiddle::TYPE_VOIDP)
# Wide strings: pass str.encode("UTF-16LE") + "\x00\x00"

#[link(name = "wininet")]
extern "system" {
    fn GopherOpenFileW(
        hConnect: *mut (),  // void*
        lpszLocator: *const u16,  // LPCWSTR
        lpszView: *const u16,  // LPCWSTR optional
        dwFlags: u32,  // DWORD
        dwContext: usize  // UINT_PTR optional
    ) -> *mut ();
}
// crates: windows-sys provides ready-made bindings for this API.

$sig = @"
[DllImport("WININET.dll", CharSet = CharSet.Unicode, SetLastError = true)]
public static extern IntPtr GopherOpenFileW(IntPtr hConnect, [MarshalAs(UnmanagedType.LPWStr)] string lpszLocator, [MarshalAs(UnmanagedType.LPWStr)] string lpszView, uint dwFlags, UIntPtr dwContext);
"@
$api = Add-Type -MemberDefinition $sig -Name 'WININET_GopherOpenFileW' -Namespace Win32 -PassThru
# $api::GopherOpenFileW(hConnect, lpszLocator, lpszView, dwFlags, dwContext)

#uselib "WININET.dll"
#func global GopherOpenFileW "GopherOpenFileW" wptr, wptr, wptr, wptr, wptr
; GopherOpenFileW hConnect, lpszLocator, lpszView, dwFlags, dwContext   ; 戻り値は stat
; hConnect : void* -> "wptr"
; lpszLocator : LPCWSTR -> "wptr"
; lpszView : LPCWSTR optional -> "wptr"
; dwFlags : DWORD -> "wptr"
; dwContext : UINT_PTR optional -> "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 GopherOpenFileW "GopherOpenFileW" sptr, wstr, wstr, int, sptr
; res = GopherOpenFileW(hConnect, lpszLocator, lpszView, dwFlags, dwContext)
; hConnect : void* -> "sptr"
; lpszLocator : LPCWSTR -> "wstr"
; lpszView : LPCWSTR optional -> "wstr"
; dwFlags : DWORD -> "int"
; dwContext : UINT_PTR optional -> "sptr"

; void* GopherOpenFileW(void* hConnect, LPCWSTR lpszLocator, LPCWSTR lpszView, DWORD dwFlags, UINT_PTR dwContext)
#uselib "WININET.dll"
#cfunc global GopherOpenFileW "GopherOpenFileW" intptr, wstr, wstr, int, intptr
; res = GopherOpenFileW(hConnect, lpszLocator, lpszView, dwFlags, dwContext)
; hConnect : void* -> "intptr"
; lpszLocator : LPCWSTR -> "wstr"
; lpszView : LPCWSTR optional -> "wstr"
; dwFlags : DWORD -> "int"
; dwContext : UINT_PTR optional -> "intptr"

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

var (
	wininet = windows.NewLazySystemDLL("WININET.dll")
	procGopherOpenFileW = wininet.NewProc("GopherOpenFileW")
)

// hConnect (void*), lpszLocator (LPCWSTR), lpszView (LPCWSTR optional), dwFlags (DWORD), dwContext (UINT_PTR optional)
r1, _, err := procGopherOpenFileW.Call(
	uintptr(hConnect),
	uintptr(unsafe.Pointer(windows.StringToUTF16Ptr(lpszLocator))),
	uintptr(unsafe.Pointer(windows.StringToUTF16Ptr(lpszView))),
	uintptr(dwFlags),
	uintptr(dwContext),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // void*

function GopherOpenFileW(
  hConnect: Pointer;   // void*
  lpszLocator: PWideChar;   // LPCWSTR
  lpszView: PWideChar;   // LPCWSTR optional
  dwFlags: DWORD;   // DWORD
  dwContext: NativeUInt   // UINT_PTR optional
): Pointer; stdcall;
  external 'WININET.dll' name 'GopherOpenFileW';

result := DllCall("WININET\GopherOpenFileW"
    , "Ptr", hConnect   ; void*
    , "WStr", lpszLocator   ; LPCWSTR
    , "WStr", lpszView   ; LPCWSTR optional
    , "UInt", dwFlags   ; DWORD
    , "UPtr", dwContext   ; UINT_PTR optional
    , "Ptr")   ; return: void*

●GopherOpenFileW(hConnect, lpszLocator, lpszView, dwFlags, dwContext) = DLL("WININET.dll", "void* GopherOpenFileW(void*, char*, char*, dword, int)")
# 呼び出し: GopherOpenFileW(hConnect, lpszLocator, lpszView, dwFlags, dwContext)
# hConnect : void* -> "void*"
# lpszLocator : LPCWSTR -> "char*"
# lpszView : LPCWSTR optional -> "char*"
# dwFlags : DWORD -> "dword"
# dwContext : UINT_PTR optional -> "int"
# 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 GopherOpenFileW(
    hConnect: ?*anyopaque, // void*
    lpszLocator: [*c]const u16, // LPCWSTR
    lpszView: [*c]const u16, // LPCWSTR optional
    dwFlags: u32, // DWORD
    dwContext: usize // UINT_PTR optional
) callconv(std.os.windows.WINAPI) ?*anyopaque;
// Unicode(-W): UTF-16LE のヌル終端バッファ([*c]const u16)を渡す。

proc GopherOpenFileW(
    hConnect: pointer,  # void*
    lpszLocator: WideCString,  # LPCWSTR
    lpszView: WideCString,  # LPCWSTR optional
    dwFlags: uint32,  # DWORD
    dwContext: uint  # UINT_PTR optional
): pointer {.importc: "GopherOpenFileW", stdcall, dynlib: "WININET.dll".}
# Unicode(-W): WideCString は newWideCString("...") で生成。

pragma(lib, "wininet");
extern(Windows)
void* GopherOpenFileW(
    void* hConnect,   // void*
    const(wchar)* lpszLocator,   // LPCWSTR
    const(wchar)* lpszView,   // LPCWSTR optional
    uint dwFlags,   // DWORD
    size_t dwContext   // UINT_PTR optional
);

ccall((:GopherOpenFileW, "WININET.dll"), stdcall, Ptr{Cvoid},
      (Ptr{Cvoid}, Cwstring, Cwstring, UInt32, Csize_t),
      hConnect, lpszLocator, lpszView, dwFlags, dwContext)
# hConnect : void* -> Ptr{Cvoid}
# lpszLocator : LPCWSTR -> Cwstring
# lpszView : LPCWSTR optional -> Cwstring
# dwFlags : DWORD -> UInt32
# dwContext : UINT_PTR optional -> Csize_t
# 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[[
void* GopherOpenFileW(
    void* hConnect,
    const uint16_t* lpszLocator,
    const uint16_t* lpszView,
    uint32_t dwFlags,
    uintptr_t dwContext);
]]
local wininet = ffi.load("wininet")
-- wininet.GopherOpenFileW(hConnect, lpszLocator, lpszView, dwFlags, dwContext)
-- hConnect : void*
-- lpszLocator : LPCWSTR
-- lpszView : LPCWSTR optional
-- dwFlags : DWORD
-- dwContext : UINT_PTR 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。
-- 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 GopherOpenFileW = lib.func('__stdcall', 'GopherOpenFileW', 'void *', ['void *', 'str16', 'str16', 'uint32_t', 'uintptr_t']);
// GopherOpenFileW(hConnect, lpszLocator, lpszView, dwFlags, dwContext)
// hConnect : void* -> 'void *'
// lpszLocator : LPCWSTR -> 'str16'
// lpszView : LPCWSTR optional -> 'str16'
// dwFlags : DWORD -> 'uint32_t'
// dwContext : UINT_PTR optional -> 'uintptr_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", {
  GopherOpenFileW: { parameters: ["pointer", "buffer", "buffer", "u32", "usize"], result: "pointer" },
});
// lib.symbols.GopherOpenFileW(hConnect, lpszLocator, lpszView, dwFlags, dwContext)
// hConnect : void* -> "pointer"
// lpszLocator : LPCWSTR -> "buffer"
// lpszView : LPCWSTR optional -> "buffer"
// dwFlags : DWORD -> "u32"
// dwContext : UINT_PTR optional -> "usize"
// 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
void* GopherOpenFileW(
    void* hConnect,
    const uint16_t* lpszLocator,
    const uint16_t* lpszView,
    uint32_t dwFlags,
    size_t dwContext);
C, "WININET.dll");
// $ffi->GopherOpenFileW(hConnect, lpszLocator, lpszView, dwFlags, dwContext);
// hConnect : void*
// lpszLocator : LPCWSTR
// lpszView : LPCWSTR optional
// dwFlags : DWORD
// dwContext : UINT_PTR 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 Wininet extends StdCallLibrary {
    Wininet INSTANCE = Native.load("wininet", Wininet.class, W32APIOptions.UNICODE_OPTIONS);
    Pointer GopherOpenFileW(
        Pointer hConnect,   // void*
        WString lpszLocator,   // LPCWSTR
        WString lpszView,   // LPCWSTR optional
        int dwFlags,   // DWORD
        long dwContext   // UINT_PTR optional
    );
}
// Unicode(-W): WString(入力)/char[](出力)で UTF-16 をマーシャリング。

@[Link("wininet")]
lib LibWININET
  fun GopherOpenFileW = GopherOpenFileW(
    hConnect : Void*,   # void*
    lpszLocator : UInt16*,   # LPCWSTR
    lpszView : UInt16*,   # LPCWSTR optional
    dwFlags : UInt32,   # DWORD
    dwContext : LibC::SizeT   # UINT_PTR optional
  ) : Void*
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 GopherOpenFileWNative = Pointer<Void> Function(Pointer<Void>, Pointer<Utf16>, Pointer<Utf16>, Uint32, UintPtr);
typedef GopherOpenFileWDart = Pointer<Void> Function(Pointer<Void>, Pointer<Utf16>, Pointer<Utf16>, int, int);
final GopherOpenFileW = DynamicLibrary.open('WININET.dll')
    .lookupFunction<GopherOpenFileWNative, GopherOpenFileWDart>('GopherOpenFileW');
// hConnect : void* -> Pointer<Void>
// lpszLocator : LPCWSTR -> Pointer<Utf16>
// lpszView : LPCWSTR optional -> Pointer<Utf16>
// dwFlags : DWORD -> Uint32
// dwContext : UINT_PTR optional -> UintPtr
// 文字列は package:ffi の "...".toNativeUtf16()/toNativeUtf8() で変換。

{$mode objfpc}{$H+}
function GopherOpenFileW(
  hConnect: Pointer;   // void*
  lpszLocator: PWideChar;   // LPCWSTR
  lpszView: PWideChar;   // LPCWSTR optional
  dwFlags: DWORD;   // DWORD
  dwContext: NativeUInt   // UINT_PTR optional
): Pointer; stdcall;
  external 'WININET.dll' name 'GopherOpenFileW';

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

foreign import stdcall safe "GopherOpenFileW"
  c_GopherOpenFileW :: Ptr () -> CWString -> CWString -> Word32 -> CUIntPtr -> IO (Ptr ())
-- hConnect : void* -> Ptr ()
-- lpszLocator : LPCWSTR -> CWString
-- lpszView : LPCWSTR optional -> CWString
-- dwFlags : DWORD -> Word32
-- dwContext : UINT_PTR optional -> CUIntPtr
-- 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 gopheropenfilew =
  foreign "GopherOpenFileW"
    ((ptr void) @-> (ptr uint16_t) @-> (ptr uint16_t) @-> uint32_t @-> size_t @-> returning (ptr void))
(* hConnect : void* -> (ptr void) *)
(* lpszLocator : LPCWSTR -> (ptr uint16_t) *)
(* lpszView : LPCWSTR optional -> (ptr uint16_t) *)
(* dwFlags : DWORD -> uint32_t *)
(* dwContext : UINT_PTR optional -> size_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 ("GopherOpenFileW" gopher-open-file-w :convention :stdcall) :pointer
  (h-connect :pointer)   ; void*
  (lpsz-locator (:string :encoding :utf-16le))   ; LPCWSTR
  (lpsz-view (:string :encoding :utf-16le))   ; LPCWSTR optional
  (dw-flags :uint32)   ; DWORD
  (dw-context :uint64))   ; UINT_PTR optional
; isize/usize(INT_PTR/SIZE_T)は x64 前提で :int64/:uint64。x86 では :int32/:uint32。

use Win32::API;
my $GopherOpenFileW = Win32::API::More->new('WININET',
    'LPVOID GopherOpenFileW(LPVOID hConnect, LPCWSTR lpszLocator, LPCWSTR lpszView, DWORD dwFlags, WPARAM dwContext)');
# my $ret = $GopherOpenFileW->Call($hConnect, $lpszLocator, $lpszView, $dwFlags, $dwContext);
# hConnect : void* -> LPVOID
# lpszLocator : LPCWSTR -> LPCWSTR
# lpszView : LPCWSTR optional -> LPCWSTR
# dwFlags : DWORD -> DWORD
# dwContext : UINT_PTR optional -> WPARAM
# 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。