uloc_getLocaleForLCID

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

INT uloc_getLocaleForLCID(
    DWORD hostID,
    LPSTR locale,
    INT localeCapacity,
    UErrorCode* status
);

<DllImport("icuuc.dll", ExactSpelling:=True, CallingConvention:=CallingConvention.Cdecl)>
Public Shared Function uloc_getLocaleForLCID(
    hostID As UInteger,   ' DWORD
    <MarshalAs(UnmanagedType.LPStr)> locale As String,   ' LPSTR
    localeCapacity As Integer,   ' INT
    ByRef status As Integer   ' UErrorCode* in/out
) As Integer
End Function

' hostID : DWORD
' locale : LPSTR
' localeCapacity : INT
' status : UErrorCode* in/out
Declare PtrSafe Function uloc_getLocaleForLCID Lib "icuuc" ( _
    ByVal hostID As Long, _
    ByVal locale As String, _
    ByVal localeCapacity 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

uloc_getLocaleForLCID = ctypes.cdll.icuuc.uloc_getLocaleForLCID
uloc_getLocaleForLCID.restype = ctypes.c_int
uloc_getLocaleForLCID.argtypes = [
    wintypes.DWORD,  # hostID : DWORD
    wintypes.LPCSTR,  # locale : LPSTR
    ctypes.c_int,  # localeCapacity : INT
    ctypes.c_void_p,  # status : UErrorCode* in/out
]

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('icuuc.dll')
uloc_getLocaleForLCID = Fiddle::Function.new(
  lib['uloc_getLocaleForLCID'],
  [
    -Fiddle::TYPE_INT,  # hostID : DWORD
    Fiddle::TYPE_VOIDP,  # locale : LPSTR
    Fiddle::TYPE_INT,  # localeCapacity : INT
    Fiddle::TYPE_VOIDP,  # status : UErrorCode* in/out
  ],
  Fiddle::TYPE_INT, Fiddle::Function::CDECL)

#[link(name = "icuuc")]
extern "C" {
    fn uloc_getLocaleForLCID(
        hostID: u32,  // DWORD
        locale: *mut u8,  // LPSTR
        localeCapacity: i32,  // INT
        status: *mut i32  // UErrorCode* in/out
    ) -> i32;
}
// crates: windows-sys provides ready-made bindings for this API.

$sig = @"
[DllImport("icuuc.dll", CallingConvention = CallingConvention.Cdecl)]
public static extern int uloc_getLocaleForLCID(uint hostID, [MarshalAs(UnmanagedType.LPStr)] string locale, int localeCapacity, ref int status);
"@
$api = Add-Type -MemberDefinition $sig -Name 'icuuc_uloc_getLocaleForLCID' -Namespace Win32 -PassThru
# $api::uloc_getLocaleForLCID(hostID, locale, localeCapacity, status)

#uselib "icuuc.dll"
#func global uloc_getLocaleForLCID "uloc_getLocaleForLCID" sptr, sptr, sptr, sptr
; uloc_getLocaleForLCID hostID, locale, localeCapacity, varptr(status)   ; 戻り値は stat
; hostID : DWORD -> "sptr"
; locale : LPSTR -> "sptr"
; localeCapacity : 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 (
	icuuc = windows.NewLazySystemDLL("icuuc.dll")
	proculoc_getLocaleForLCID = icuuc.NewProc("uloc_getLocaleForLCID")
)

// hostID (DWORD), locale (LPSTR), localeCapacity (INT), status (UErrorCode* in/out)
r1, _, err := proculoc_getLocaleForLCID.Call(
	uintptr(hostID),
	uintptr(unsafe.Pointer(windows.BytePtrFromString(locale))),
	uintptr(localeCapacity),
	uintptr(status),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // INT

function uloc_getLocaleForLCID(
  hostID: DWORD;   // DWORD
  locale: PAnsiChar;   // LPSTR
  localeCapacity: Integer;   // INT
  status: Pointer   // UErrorCode* in/out
): Integer; cdecl;
  external 'icuuc.dll' name 'uloc_getLocaleForLCID';

result := DllCall("icuuc\uloc_getLocaleForLCID"
    , "UInt", hostID   ; DWORD
    , "AStr", locale   ; LPSTR
    , "Int", localeCapacity   ; INT
    , "Ptr", status   ; UErrorCode* in/out
    , "Cdecl Int")   ; return: INT

●uloc_getLocaleForLCID(hostID, locale, localeCapacity, status) = DLL("icuuc.dll", "int uloc_getLocaleForLCID(dword, char*, int, void*)")
# 呼び出し: uloc_getLocaleForLCID(hostID, locale, localeCapacity, status)
# hostID : DWORD -> "dword"
# locale : LPSTR -> "char*"
# localeCapacity : 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 "icuuc" fn uloc_getLocaleForLCID(
    hostID: u32, // DWORD
    locale: [*c]const u8, // LPSTR
    localeCapacity: i32, // INT
    status: [*c]i32 // UErrorCode* in/out
) callconv(.c) i32;

proc uloc_getLocaleForLCID(
    hostID: uint32,  # DWORD
    locale: cstring,  # LPSTR
    localeCapacity: int32,  # INT
    status: ptr int32  # UErrorCode* in/out
): int32 {.importc: "uloc_getLocaleForLCID", cdecl, dynlib: "icuuc.dll".}

pragma(lib, "icuuc");
extern(C)
int uloc_getLocaleForLCID(
    uint hostID,   // DWORD
    const(char)* locale,   // LPSTR
    int localeCapacity,   // INT
    int* status   // UErrorCode* in/out
);

ccall((:uloc_getLocaleForLCID, "icuuc.dll"), Int32,
      (UInt32, Cstring, Int32, Ptr{Int32}),
      hostID, locale, localeCapacity, status)
# hostID : DWORD -> UInt32
# locale : LPSTR -> Cstring
# localeCapacity : INT -> Int32
# status : UErrorCode* in/out -> Ptr{Int32}

local ffi = require("ffi")
ffi.cdef[[
int32_t uloc_getLocaleForLCID(
    uint32_t hostID,
    const char* locale,
    int32_t localeCapacity,
    int32_t* status);
]]
local icuuc = ffi.load("icuuc")
-- icuuc.uloc_getLocaleForLCID(hostID, locale, localeCapacity, status)
-- hostID : DWORD
-- locale : LPSTR
-- localeCapacity : 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('icuuc.dll');
const uloc_getLocaleForLCID = lib.func('__cdecl', 'uloc_getLocaleForLCID', 'int32_t', ['uint32_t', 'str', 'int32_t', 'int32_t *']);
// uloc_getLocaleForLCID(hostID, locale, localeCapacity, status)
// hostID : DWORD -> 'uint32_t'
// locale : LPSTR -> 'str'
// localeCapacity : 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("icuuc.dll", {
  uloc_getLocaleForLCID: { parameters: ["u32", "buffer", "i32", "pointer"], result: "i32" },
});
// lib.symbols.uloc_getLocaleForLCID(hostID, locale, localeCapacity, status)
// hostID : DWORD -> "u32"
// locale : LPSTR -> "buffer"
// localeCapacity : 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 uloc_getLocaleForLCID(
    uint32_t hostID,
    const char* locale,
    int32_t localeCapacity,
    int32_t* status);
C, "icuuc.dll");
// $ffi->uloc_getLocaleForLCID(hostID, locale, localeCapacity, status);
// hostID : DWORD
// locale : LPSTR
// localeCapacity : 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 Icuuc extends Library {
    Icuuc INSTANCE = Native.load("icuuc", Icuuc.class);
    int uloc_getLocaleForLCID(
        int hostID,   // DWORD
        String locale,   // LPSTR
        int localeCapacity,   // INT
        IntByReference status   // UErrorCode* in/out
    );
}

@[Link("icuuc")]
lib Libicuuc
  fun uloc_getLocaleForLCID = uloc_getLocaleForLCID(
    hostID : UInt32,   # DWORD
    locale : UInt8*,   # LPSTR
    localeCapacity : 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 uloc_getLocaleForLCIDNative = Int32 Function(Uint32, Pointer<Utf8>, Int32, Pointer<Int32>);
typedef uloc_getLocaleForLCIDDart = int Function(int, Pointer<Utf8>, int, Pointer<Int32>);
final uloc_getLocaleForLCID = DynamicLibrary.open('icuuc.dll')
    .lookupFunction<uloc_getLocaleForLCIDNative, uloc_getLocaleForLCIDDart>('uloc_getLocaleForLCID');
// hostID : DWORD -> Uint32
// locale : LPSTR -> Pointer<Utf8>
// localeCapacity : INT -> Int32
// status : UErrorCode* in/out -> Pointer<Int32>
// 文字列は package:ffi の "...".toNativeUtf16()/toNativeUtf8() で変換。

{$mode objfpc}{$H+}
function uloc_getLocaleForLCID(
  hostID: DWORD;   // DWORD
  locale: PAnsiChar;   // LPSTR
  localeCapacity: Integer;   // INT
  status: Pointer   // UErrorCode* in/out
): Integer; cdecl;
  external 'icuuc.dll' name 'uloc_getLocaleForLCID';

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

foreign import ccall safe "uloc_getLocaleForLCID"
  c_uloc_getLocaleForLCID :: Word32 -> CString -> Int32 -> Ptr Int32 -> IO Int32
-- hostID : DWORD -> Word32
-- locale : LPSTR -> CString
-- localeCapacity : 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 uloc_getlocaleforlcid =
  foreign "uloc_getLocaleForLCID"
    (uint32_t @-> string @-> int32_t @-> (ptr int32_t) @-> returning int32_t)
(* hostID : DWORD -> uint32_t *)
(* locale : LPSTR -> string *)
(* localeCapacity : 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 icuuc (t "icuuc.dll"))
(cffi:use-foreign-library icuuc)

(cffi:defcfun ("uloc_getLocaleForLCID" uloc-get-locale-for-lcid :convention :cdecl) :int32
  (host-id :uint32)   ; DWORD
  (locale :string)   ; LPSTR
  (locale-capacity :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 $uloc_getLocaleForLCID = Win32::API::More->new('icuuc',
    'int uloc_getLocaleForLCID(DWORD hostID, LPCSTR locale, int localeCapacity, LPVOID status)');
# my $ret = $uloc_getLocaleForLCID->Call($hostID, $locale, $localeCapacity, $status);
# hostID : DWORD -> DWORD
# locale : LPSTR -> LPCSTR
# localeCapacity : 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。