udatpg_open

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

void** udatpg_open(
    LPCSTR locale,
    UErrorCode* pErrorCode
);

<DllImport("icuin.dll", ExactSpelling:=True, CallingConvention:=CallingConvention.Cdecl)>
Public Shared Function udatpg_open(
    <MarshalAs(UnmanagedType.LPStr)> locale As String,   ' LPCSTR
    ByRef pErrorCode As Integer   ' UErrorCode* in/out
) As IntPtr
End Function

' locale : LPCSTR
' pErrorCode : UErrorCode* in/out
Declare PtrSafe Function udatpg_open Lib "icuin" ( _
    ByVal locale As String, _
    ByRef pErrorCode As Long) As LongPtr
' VBA7前提(PtrSafe)。32bit Office では LongPtr→Long。Integer=16bit / Long=32bit / LongLong=64bit。

import ctypes
from ctypes import wintypes

udatpg_open = ctypes.cdll.icuin.udatpg_open
udatpg_open.restype = ctypes.c_void_p
udatpg_open.argtypes = [
    wintypes.LPCSTR,  # locale : LPCSTR
    ctypes.c_void_p,  # pErrorCode : UErrorCode* in/out
]

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('icuin.dll')
udatpg_open = Fiddle::Function.new(
  lib['udatpg_open'],
  [
    Fiddle::TYPE_VOIDP,  # locale : LPCSTR
    Fiddle::TYPE_VOIDP,  # pErrorCode : UErrorCode* in/out
  ],
  Fiddle::TYPE_VOIDP, Fiddle::Function::CDECL)

#[link(name = "icuin")]
extern "C" {
    fn udatpg_open(
        locale: *const u8,  // LPCSTR
        pErrorCode: *mut i32  // UErrorCode* in/out
    ) -> *mut *mut ();
}
// crates: windows-sys provides ready-made bindings for this API.

$sig = @"
[DllImport("icuin.dll", CallingConvention = CallingConvention.Cdecl)]
public static extern IntPtr udatpg_open([MarshalAs(UnmanagedType.LPStr)] string locale, ref int pErrorCode);
"@
$api = Add-Type -MemberDefinition $sig -Name 'icuin_udatpg_open' -Namespace Win32 -PassThru
# $api::udatpg_open(locale, pErrorCode)

#uselib "icuin.dll"
#func global udatpg_open "udatpg_open" sptr, sptr
; udatpg_open locale, varptr(pErrorCode)   ; 戻り値は stat
; locale : LPCSTR -> "sptr"
; pErrorCode : UErrorCode* in/out -> "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 (
	icuin = windows.NewLazySystemDLL("icuin.dll")
	procudatpg_open = icuin.NewProc("udatpg_open")
)

// locale (LPCSTR), pErrorCode (UErrorCode* in/out)
r1, _, err := procudatpg_open.Call(
	uintptr(unsafe.Pointer(windows.BytePtrFromString(locale))),
	uintptr(pErrorCode),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // void**

function udatpg_open(
  locale: PAnsiChar;   // LPCSTR
  pErrorCode: Pointer   // UErrorCode* in/out
): Pointer; cdecl;
  external 'icuin.dll' name 'udatpg_open';

result := DllCall("icuin\udatpg_open"
    , "AStr", locale   ; LPCSTR
    , "Ptr", pErrorCode   ; UErrorCode* in/out
    , "Cdecl Ptr")   ; return: void**

●udatpg_open(locale, pErrorCode) = DLL("icuin.dll", "void* udatpg_open(char*, void*)")
# 呼び出し: udatpg_open(locale, pErrorCode)
# locale : LPCSTR -> "char*"
# pErrorCode : UErrorCode* in/out -> "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)。
# ※cdecl関数。DLL()宣言はstdcall前提。cdeclは EXEC_PTR(`cdecl`,…) を使用。

const std = @import("std");

extern "icuin" fn udatpg_open(
    locale: [*c]const u8, // LPCSTR
    pErrorCode: [*c]i32 // UErrorCode* in/out
) callconv(.c) ?*anyopaque;

proc udatpg_open(
    locale: cstring,  # LPCSTR
    pErrorCode: ptr int32  # UErrorCode* in/out
): pointer {.importc: "udatpg_open", cdecl, dynlib: "icuin.dll".}

pragma(lib, "icuin");
extern(C)
void** udatpg_open(
    const(char)* locale,   // LPCSTR
    int* pErrorCode   // UErrorCode* in/out
);

ccall((:udatpg_open, "icuin.dll"), Ptr{Cvoid},
      (Cstring, Ptr{Int32}),
      locale, pErrorCode)
# locale : LPCSTR -> Cstring
# pErrorCode : UErrorCode* in/out -> Ptr{Int32}

local ffi = require("ffi")
ffi.cdef[[
void** udatpg_open(
    const char* locale,
    int32_t* pErrorCode);
]]
local icuin = ffi.load("icuin")
-- icuin.udatpg_open(locale, pErrorCode)
-- locale : LPCSTR
-- pErrorCode : UErrorCode* in/out
-- 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('icuin.dll');
const udatpg_open = lib.func('__cdecl', 'udatpg_open', 'void *', ['str', 'int32_t *']);
// udatpg_open(locale, pErrorCode)
// locale : LPCSTR -> 'str'
// pErrorCode : UErrorCode* in/out -> 'int32_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("icuin.dll", {
  udatpg_open: { parameters: ["buffer", "pointer"], result: "pointer" },
});
// lib.symbols.udatpg_open(locale, pErrorCode)
// locale : LPCSTR -> "buffer"
// pErrorCode : UErrorCode* in/out -> "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
void** udatpg_open(
    const char* locale,
    int32_t* pErrorCode);
C, "icuin.dll");
// $ffi->udatpg_open(locale, pErrorCode);
// locale : LPCSTR
// pErrorCode : UErrorCode* in/out
// 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。

import com.sun.jna.*;
import com.sun.jna.ptr.*;
import com.sun.jna.win32.StdCallLibrary;
import com.sun.jna.win32.W32APIOptions;

public interface Icuin extends Library {
    Icuin INSTANCE = Native.load("icuin", Icuin.class);
    Pointer udatpg_open(
        String locale,   // LPCSTR
        IntByReference pErrorCode   // UErrorCode* in/out
    );
}

@[Link("icuin")]
lib Libicuin
  fun udatpg_open = udatpg_open(
    locale : UInt8*,   # LPCSTR
    pErrorCode : Int32*   # UErrorCode* in/out
  ) : Void**
end
# 構造体/GUID/enum は lib 内に対応する型定義が必要。

import 'dart:ffi';
import 'package:ffi/ffi.dart';

typedef udatpg_openNative = Pointer<Void> Function(Pointer<Utf8>, Pointer<Int32>);
typedef udatpg_openDart = Pointer<Void> Function(Pointer<Utf8>, Pointer<Int32>);
final udatpg_open = DynamicLibrary.open('icuin.dll')
    .lookupFunction<udatpg_openNative, udatpg_openDart>('udatpg_open');
// locale : LPCSTR -> Pointer<Utf8>
// pErrorCode : UErrorCode* in/out -> Pointer<Int32>
// 文字列は package:ffi の "...".toNativeUtf16()/toNativeUtf8() で変換。

{$mode objfpc}{$H+}
function udatpg_open(
  locale: PAnsiChar;   // LPCSTR
  pErrorCode: Pointer   // UErrorCode* in/out
): Pointer; cdecl;
  external 'icuin.dll' name 'udatpg_open';

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

foreign import ccall safe "udatpg_open"
  c_udatpg_open :: CString -> Ptr Int32 -> IO (Ptr ())
-- locale : LPCSTR -> CString
-- pErrorCode : UErrorCode* in/out -> Ptr Int32
-- 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 udatpg_open =
  foreign "udatpg_open"
    (string @-> (ptr int32_t) @-> returning (ptr void))
(* locale : LPCSTR -> string *)
(* pErrorCode : UErrorCode* in/out -> (ptr int32_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 icuin (t "icuin.dll"))
(cffi:use-foreign-library icuin)

(cffi:defcfun ("udatpg_open" udatpg-open :convention :cdecl) :pointer
  (locale :string)   ; LPCSTR
  (p-error-code :pointer))   ; UErrorCode* in/out
; isize/usize(INT_PTR/SIZE_T)は x64 前提で :int64/:uint64。x86 では :int32/:uint32。

use Win32::API;
my $udatpg_open = Win32::API::More->new('icuin',
    'LPVOID udatpg_open(LPCSTR locale, LPVOID pErrorCode)');
# my $ret = $udatpg_open->Call($locale, $pErrorCode);
# locale : LPCSTR -> LPCSTR
# pErrorCode : UErrorCode* in/out -> LPVOID
# 値渡し構造体は pack() した文字列、または Win32::API::Struct を使用。