unumsys_getDescription

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

INT unumsys_getDescription(
    const UNumberingSystem* unumsys,
    WORD* result,
    INT resultLength,
    UErrorCode* status
);

<DllImport("icuin.dll", ExactSpelling:=True, CallingConvention:=CallingConvention.Cdecl)>
Public Shared Function unumsys_getDescription(
    ByRef unumsys As IntPtr,   ' UNumberingSystem*
    ByRef result As UShort,   ' WORD* in/out
    resultLength As Integer,   ' INT
    ByRef status As Integer   ' UErrorCode* in/out
) As Integer
End Function

' unumsys : UNumberingSystem*
' result : WORD* in/out
' resultLength : INT
' status : UErrorCode* in/out
Declare PtrSafe Function unumsys_getDescription Lib "icuin" ( _
    ByRef unumsys As LongPtr, _
    ByRef result As Integer, _
    ByVal resultLength As Long, _
    ByRef status As Long) As Long
' VBA7前提(PtrSafe)。32bit Office では LongPtr→Long。Integer=16bit / Long=32bit / LongLong=64bit。

import ctypes
from ctypes import wintypes

unumsys_getDescription = ctypes.cdll.icuin.unumsys_getDescription
unumsys_getDescription.restype = ctypes.c_int
unumsys_getDescription.argtypes = [
    ctypes.c_void_p,  # unumsys : UNumberingSystem*
    ctypes.POINTER(ctypes.c_ushort),  # result : WORD* in/out
    ctypes.c_int,  # resultLength : INT
    ctypes.c_void_p,  # status : UErrorCode* in/out
]

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('icuin.dll')
unumsys_getDescription = Fiddle::Function.new(
  lib['unumsys_getDescription'],
  [
    Fiddle::TYPE_VOIDP,  # unumsys : UNumberingSystem*
    Fiddle::TYPE_VOIDP,  # result : WORD* in/out
    Fiddle::TYPE_INT,  # resultLength : INT
    Fiddle::TYPE_VOIDP,  # status : UErrorCode* in/out
  ],
  Fiddle::TYPE_INT, Fiddle::Function::CDECL)

#[link(name = "icuin")]
extern "C" {
    fn unumsys_getDescription(
        unumsys: *const isize,  // UNumberingSystem*
        result: *mut u16,  // WORD* in/out
        resultLength: i32,  // INT
        status: *mut i32  // UErrorCode* in/out
    ) -> i32;
}
// crates: windows-sys provides ready-made bindings for this API.

$sig = @"
[DllImport("icuin.dll", CallingConvention = CallingConvention.Cdecl)]
public static extern int unumsys_getDescription(ref IntPtr unumsys, ref ushort result, int resultLength, ref int status);
"@
$api = Add-Type -MemberDefinition $sig -Name 'icuin_unumsys_getDescription' -Namespace Win32 -PassThru
# $api::unumsys_getDescription(unumsys, result, resultLength, status)

#uselib "icuin.dll"
#func global unumsys_getDescription "unumsys_getDescription" sptr, sptr, sptr, sptr
; unumsys_getDescription varptr(unumsys), varptr(result), resultLength, varptr(status)   ; 戻り値は stat
; unumsys : UNumberingSystem* -> "sptr"
; result : WORD* in/out -> "sptr"
; resultLength : INT -> "sptr"
; status : 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")
	procunumsys_getDescription = icuin.NewProc("unumsys_getDescription")
)

// unumsys (UNumberingSystem*), result (WORD* in/out), resultLength (INT), status (UErrorCode* in/out)
r1, _, err := procunumsys_getDescription.Call(
	uintptr(unumsys),
	uintptr(result),
	uintptr(resultLength),
	uintptr(status),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // INT

function unumsys_getDescription(
  unumsys: Pointer;   // UNumberingSystem*
  result: Pointer;   // WORD* in/out
  resultLength: Integer;   // INT
  status: Pointer   // UErrorCode* in/out
): Integer; cdecl;
  external 'icuin.dll' name 'unumsys_getDescription';

result := DllCall("icuin\unumsys_getDescription"
    , "Ptr", unumsys   ; UNumberingSystem*
    , "Ptr", result   ; WORD* in/out
    , "Int", resultLength   ; INT
    , "Ptr", status   ; UErrorCode* in/out
    , "Cdecl Int")   ; return: INT

●unumsys_getDescription(unumsys, result, resultLength, status) = DLL("icuin.dll", "int unumsys_getDescription(void*, void*, int, void*)")
# 呼び出し: unumsys_getDescription(unumsys, result, resultLength, status)
# unumsys : UNumberingSystem* -> "void*"
# result : WORD* in/out -> "void*"
# resultLength : INT -> "int"
# status : 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 unumsys_getDescription(
    unumsys: [*c]isize, // UNumberingSystem*
    result: [*c]u16, // WORD* in/out
    resultLength: i32, // INT
    status: [*c]i32 // UErrorCode* in/out
) callconv(.c) i32;

proc unumsys_getDescription(
    unumsys: ptr int,  # UNumberingSystem*
    result: ptr uint16,  # WORD* in/out
    resultLength: int32,  # INT
    status: ptr int32  # UErrorCode* in/out
): int32 {.importc: "unumsys_getDescription", cdecl, dynlib: "icuin.dll".}

pragma(lib, "icuin");
extern(C)
int unumsys_getDescription(
    ptrdiff_t* unumsys,   // UNumberingSystem*
    ushort* result,   // WORD* in/out
    int resultLength,   // INT
    int* status   // UErrorCode* in/out
);

ccall((:unumsys_getDescription, "icuin.dll"), Int32,
      (Ptr{Int}, Ptr{UInt16}, Int32, Ptr{Int32}),
      unumsys, result, resultLength, status)
# unumsys : UNumberingSystem* -> Ptr{Int}
# result : WORD* in/out -> Ptr{UInt16}
# resultLength : INT -> Int32
# status : UErrorCode* in/out -> Ptr{Int32}

local ffi = require("ffi")
ffi.cdef[[
int32_t unumsys_getDescription(
    intptr_t* unumsys,
    uint16_t* result,
    int32_t resultLength,
    int32_t* status);
]]
local icuin = ffi.load("icuin")
-- icuin.unumsys_getDescription(unumsys, result, resultLength, status)
-- unumsys : UNumberingSystem*
-- result : WORD* in/out
-- resultLength : INT
-- status : 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 unumsys_getDescription = lib.func('__cdecl', 'unumsys_getDescription', 'int32_t', ['intptr_t *', 'uint16_t *', 'int32_t', 'int32_t *']);
// unumsys_getDescription(unumsys, result, resultLength, status)
// unumsys : UNumberingSystem* -> 'intptr_t *'
// result : WORD* in/out -> 'uint16_t *'
// resultLength : INT -> 'int32_t'
// status : 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", {
  unumsys_getDescription: { parameters: ["pointer", "pointer", "i32", "pointer"], result: "i32" },
});
// lib.symbols.unumsys_getDescription(unumsys, result, resultLength, status)
// unumsys : UNumberingSystem* -> "pointer"
// result : WORD* in/out -> "pointer"
// resultLength : INT -> "i32"
// status : 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
int32_t unumsys_getDescription(
    intptr_t* unumsys,
    uint16_t* result,
    int32_t resultLength,
    int32_t* status);
C, "icuin.dll");
// $ffi->unumsys_getDescription(unumsys, result, resultLength, status);
// unumsys : UNumberingSystem*
// result : WORD* in/out
// resultLength : INT
// status : 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);
    int unumsys_getDescription(
        LongByReference unumsys,   // UNumberingSystem*
        ShortByReference result,   // WORD* in/out
        int resultLength,   // INT
        IntByReference status   // UErrorCode* in/out
    );
}

@[Link("icuin")]
lib Libicuin
  fun unumsys_getDescription = unumsys_getDescription(
    unumsys : LibC::SSizeT*,   # UNumberingSystem*
    result : UInt16*,   # WORD* in/out
    resultLength : Int32,   # INT
    status : Int32*   # UErrorCode* in/out
  ) : Int32
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 unumsys_getDescriptionNative = Int32 Function(Pointer<IntPtr>, Pointer<Uint16>, Int32, Pointer<Int32>);
typedef unumsys_getDescriptionDart = int Function(Pointer<IntPtr>, Pointer<Uint16>, int, Pointer<Int32>);
final unumsys_getDescription = DynamicLibrary.open('icuin.dll')
    .lookupFunction<unumsys_getDescriptionNative, unumsys_getDescriptionDart>('unumsys_getDescription');
// unumsys : UNumberingSystem* -> Pointer<IntPtr>
// result : WORD* in/out -> Pointer<Uint16>
// resultLength : INT -> Int32
// status : UErrorCode* in/out -> Pointer<Int32>
// 文字列は package:ffi の "...".toNativeUtf16()/toNativeUtf8() で変換。

{$mode objfpc}{$H+}
function unumsys_getDescription(
  unumsys: Pointer;   // UNumberingSystem*
  result: Pointer;   // WORD* in/out
  resultLength: Integer;   // INT
  status: Pointer   // UErrorCode* in/out
): Integer; cdecl;
  external 'icuin.dll' name 'unumsys_getDescription';

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

foreign import ccall safe "unumsys_getDescription"
  c_unumsys_getDescription :: Ptr CIntPtr -> Ptr Word16 -> Int32 -> Ptr Int32 -> IO Int32
-- unumsys : UNumberingSystem* -> Ptr CIntPtr
-- result : WORD* in/out -> Ptr Word16
-- resultLength : INT -> Int32
-- status : 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 unumsys_getdescription =
  foreign "unumsys_getDescription"
    ((ptr intptr_t) @-> (ptr uint16_t) @-> int32_t @-> (ptr int32_t) @-> returning int32_t)
(* unumsys : UNumberingSystem* -> (ptr intptr_t) *)
(* result : WORD* in/out -> (ptr uint16_t) *)
(* resultLength : INT -> int32_t *)
(* status : 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 ("unumsys_getDescription" unumsys-get-description :convention :cdecl) :int32
  (unumsys :pointer)   ; UNumberingSystem*
  (result :pointer)   ; WORD* in/out
  (result-length :int32)   ; INT
  (status :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 $unumsys_getDescription = Win32::API::More->new('icuin',
    'int unumsys_getDescription(LPVOID unumsys, LPVOID result, int resultLength, LPVOID status)');
# my $ret = $unumsys_getDescription->Call($unumsys, $result, $resultLength, $status);
# unumsys : UNumberingSystem* -> LPVOID
# result : WORD* in/out -> LPVOID
# resultLength : INT -> int
# status : 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。