NotifyUILanguageChange

// KERNEL32.dll
#include <windows.h>

BOOL NotifyUILanguageChange(
    DWORD dwFlags,
    LPCWSTR pcwstrNewLanguage,   // optional
    LPCWSTR pcwstrPreviousLanguage,   // optional
    DWORD dwReserved,
    DWORD* pdwStatusRtrn   // optional
);

<DllImport("KERNEL32.dll", ExactSpelling:=True)>
Public Shared Function NotifyUILanguageChange(
    dwFlags As UInteger,   ' DWORD
    <MarshalAs(UnmanagedType.LPWStr)> pcwstrNewLanguage As String,   ' LPCWSTR optional
    <MarshalAs(UnmanagedType.LPWStr)> pcwstrPreviousLanguage As String,   ' LPCWSTR optional
    dwReserved As UInteger,   ' DWORD
    pdwStatusRtrn As IntPtr   ' DWORD* optional, out
) As <MarshalAs(UnmanagedType.Bool)> Boolean
End Function

' dwFlags : DWORD
' pcwstrNewLanguage : LPCWSTR optional
' pcwstrPreviousLanguage : LPCWSTR optional
' dwReserved : DWORD
' pdwStatusRtrn : DWORD* optional, out
Declare PtrSafe Function NotifyUILanguageChange Lib "kernel32" ( _
    ByVal dwFlags As Long, _
    ByVal pcwstrNewLanguage As LongPtr, _
    ByVal pcwstrPreviousLanguage As LongPtr, _
    ByVal dwReserved As Long, _
    ByVal pdwStatusRtrn As LongPtr) As Long
' VBA7前提(PtrSafe)。32bit Office では LongPtr→Long。Integer=16bit / Long=32bit / LongLong=64bit。

import ctypes
from ctypes import wintypes

NotifyUILanguageChange = ctypes.windll.kernel32.NotifyUILanguageChange
NotifyUILanguageChange.restype = wintypes.BOOL
NotifyUILanguageChange.argtypes = [
    wintypes.DWORD,  # dwFlags : DWORD
    wintypes.LPCWSTR,  # pcwstrNewLanguage : LPCWSTR optional
    wintypes.LPCWSTR,  # pcwstrPreviousLanguage : LPCWSTR optional
    wintypes.DWORD,  # dwReserved : DWORD
    ctypes.POINTER(wintypes.DWORD),  # pdwStatusRtrn : DWORD* optional, out
]

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('KERNEL32.dll')
NotifyUILanguageChange = Fiddle::Function.new(
  lib['NotifyUILanguageChange'],
  [
    -Fiddle::TYPE_INT,  # dwFlags : DWORD
    Fiddle::TYPE_VOIDP,  # pcwstrNewLanguage : LPCWSTR optional
    Fiddle::TYPE_VOIDP,  # pcwstrPreviousLanguage : LPCWSTR optional
    -Fiddle::TYPE_INT,  # dwReserved : DWORD
    Fiddle::TYPE_VOIDP,  # pdwStatusRtrn : DWORD* optional, out
  ],
  Fiddle::TYPE_INT)

#[link(name = "kernel32")]
extern "system" {
    fn NotifyUILanguageChange(
        dwFlags: u32,  // DWORD
        pcwstrNewLanguage: *const u16,  // LPCWSTR optional
        pcwstrPreviousLanguage: *const u16,  // LPCWSTR optional
        dwReserved: u32,  // DWORD
        pdwStatusRtrn: *mut u32  // DWORD* optional, out
    ) -> i32;
}
// crates: windows-sys provides ready-made bindings for this API.

$sig = @"
[return: MarshalAs(UnmanagedType.Bool)]
[DllImport("KERNEL32.dll")]
public static extern bool NotifyUILanguageChange(uint dwFlags, [MarshalAs(UnmanagedType.LPWStr)] string pcwstrNewLanguage, [MarshalAs(UnmanagedType.LPWStr)] string pcwstrPreviousLanguage, uint dwReserved, IntPtr pdwStatusRtrn);
"@
$api = Add-Type -MemberDefinition $sig -Name 'KERNEL32_NotifyUILanguageChange' -Namespace Win32 -PassThru
# $api::NotifyUILanguageChange(dwFlags, pcwstrNewLanguage, pcwstrPreviousLanguage, dwReserved, pdwStatusRtrn)

#uselib "KERNEL32.dll"
#func global NotifyUILanguageChange "NotifyUILanguageChange" sptr, sptr, sptr, sptr, sptr
; NotifyUILanguageChange dwFlags, pcwstrNewLanguage, pcwstrPreviousLanguage, dwReserved, varptr(pdwStatusRtrn)   ; 戻り値は stat
; dwFlags : DWORD -> "sptr"
; pcwstrNewLanguage : LPCWSTR optional -> "sptr"
; pcwstrPreviousLanguage : LPCWSTR optional -> "sptr"
; dwReserved : DWORD -> "sptr"
; pdwStatusRtrn : DWORD* optional, 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 (
	kernel32 = windows.NewLazySystemDLL("KERNEL32.dll")
	procNotifyUILanguageChange = kernel32.NewProc("NotifyUILanguageChange")
)

// dwFlags (DWORD), pcwstrNewLanguage (LPCWSTR optional), pcwstrPreviousLanguage (LPCWSTR optional), dwReserved (DWORD), pdwStatusRtrn (DWORD* optional, out)
r1, _, err := procNotifyUILanguageChange.Call(
	uintptr(dwFlags),
	uintptr(unsafe.Pointer(windows.StringToUTF16Ptr(pcwstrNewLanguage))),
	uintptr(unsafe.Pointer(windows.StringToUTF16Ptr(pcwstrPreviousLanguage))),
	uintptr(dwReserved),
	uintptr(pdwStatusRtrn),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // BOOL

function NotifyUILanguageChange(
  dwFlags: DWORD;   // DWORD
  pcwstrNewLanguage: PWideChar;   // LPCWSTR optional
  pcwstrPreviousLanguage: PWideChar;   // LPCWSTR optional
  dwReserved: DWORD;   // DWORD
  pdwStatusRtrn: Pointer   // DWORD* optional, out
): BOOL; stdcall;
  external 'KERNEL32.dll' name 'NotifyUILanguageChange';

result := DllCall("KERNEL32\NotifyUILanguageChange"
    , "UInt", dwFlags   ; DWORD
    , "WStr", pcwstrNewLanguage   ; LPCWSTR optional
    , "WStr", pcwstrPreviousLanguage   ; LPCWSTR optional
    , "UInt", dwReserved   ; DWORD
    , "Ptr", pdwStatusRtrn   ; DWORD* optional, out
    , "Int")   ; return: BOOL

●NotifyUILanguageChange(dwFlags, pcwstrNewLanguage, pcwstrPreviousLanguage, dwReserved, pdwStatusRtrn) = DLL("KERNEL32.dll", "bool NotifyUILanguageChange(dword, char*, char*, dword, void*)")
# 呼び出し: NotifyUILanguageChange(dwFlags, pcwstrNewLanguage, pcwstrPreviousLanguage, dwReserved, pdwStatusRtrn)
# dwFlags : DWORD -> "dword"
# pcwstrNewLanguage : LPCWSTR optional -> "char*"
# pcwstrPreviousLanguage : LPCWSTR optional -> "char*"
# dwReserved : DWORD -> "dword"
# pdwStatusRtrn : DWORD* optional, 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)。

const std = @import("std");

extern "kernel32" fn NotifyUILanguageChange(
    dwFlags: u32, // DWORD
    pcwstrNewLanguage: [*c]const u16, // LPCWSTR optional
    pcwstrPreviousLanguage: [*c]const u16, // LPCWSTR optional
    dwReserved: u32, // DWORD
    pdwStatusRtrn: [*c]u32 // DWORD* optional, out
) callconv(std.os.windows.WINAPI) i32;

proc NotifyUILanguageChange(
    dwFlags: uint32,  # DWORD
    pcwstrNewLanguage: WideCString,  # LPCWSTR optional
    pcwstrPreviousLanguage: WideCString,  # LPCWSTR optional
    dwReserved: uint32,  # DWORD
    pdwStatusRtrn: ptr uint32  # DWORD* optional, out
): int32 {.importc: "NotifyUILanguageChange", stdcall, dynlib: "KERNEL32.dll".}

pragma(lib, "kernel32");
extern(Windows)
int NotifyUILanguageChange(
    uint dwFlags,   // DWORD
    const(wchar)* pcwstrNewLanguage,   // LPCWSTR optional
    const(wchar)* pcwstrPreviousLanguage,   // LPCWSTR optional
    uint dwReserved,   // DWORD
    uint* pdwStatusRtrn   // DWORD* optional, out
);

ccall((:NotifyUILanguageChange, "KERNEL32.dll"), stdcall, Int32,
      (UInt32, Cwstring, Cwstring, UInt32, Ptr{UInt32}),
      dwFlags, pcwstrNewLanguage, pcwstrPreviousLanguage, dwReserved, pdwStatusRtrn)
# dwFlags : DWORD -> UInt32
# pcwstrNewLanguage : LPCWSTR optional -> Cwstring
# pcwstrPreviousLanguage : LPCWSTR optional -> Cwstring
# dwReserved : DWORD -> UInt32
# pdwStatusRtrn : DWORD* optional, out -> Ptr{UInt32}
# stdcall は 32bit のみ意味を持つ(x64 では無視)。

local ffi = require("ffi")
ffi.cdef[[
int32_t NotifyUILanguageChange(
    uint32_t dwFlags,
    const uint16_t* pcwstrNewLanguage,
    const uint16_t* pcwstrPreviousLanguage,
    uint32_t dwReserved,
    uint32_t* pdwStatusRtrn);
]]
local kernel32 = ffi.load("kernel32")
-- kernel32.NotifyUILanguageChange(dwFlags, pcwstrNewLanguage, pcwstrPreviousLanguage, dwReserved, pdwStatusRtrn)
-- dwFlags : DWORD
-- pcwstrNewLanguage : LPCWSTR optional
-- pcwstrPreviousLanguage : LPCWSTR optional
-- dwReserved : DWORD
-- pdwStatusRtrn : DWORD* optional, 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('KERNEL32.dll');
const NotifyUILanguageChange = lib.func('__stdcall', 'NotifyUILanguageChange', 'int32_t', ['uint32_t', 'str16', 'str16', 'uint32_t', 'uint32_t *']);
// NotifyUILanguageChange(dwFlags, pcwstrNewLanguage, pcwstrPreviousLanguage, dwReserved, pdwStatusRtrn)
// dwFlags : DWORD -> 'uint32_t'
// pcwstrNewLanguage : LPCWSTR optional -> 'str16'
// pcwstrPreviousLanguage : LPCWSTR optional -> 'str16'
// dwReserved : DWORD -> 'uint32_t'
// pdwStatusRtrn : DWORD* optional, out -> '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("KERNEL32.dll", {
  NotifyUILanguageChange: { parameters: ["u32", "buffer", "buffer", "u32", "pointer"], result: "i32" },
});
// lib.symbols.NotifyUILanguageChange(dwFlags, pcwstrNewLanguage, pcwstrPreviousLanguage, dwReserved, pdwStatusRtrn)
// dwFlags : DWORD -> "u32"
// pcwstrNewLanguage : LPCWSTR optional -> "buffer"
// pcwstrPreviousLanguage : LPCWSTR optional -> "buffer"
// dwReserved : DWORD -> "u32"
// pdwStatusRtrn : DWORD* optional, 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 NotifyUILanguageChange(
    uint32_t dwFlags,
    const uint16_t* pcwstrNewLanguage,
    const uint16_t* pcwstrPreviousLanguage,
    uint32_t dwReserved,
    uint32_t* pdwStatusRtrn);
C, "KERNEL32.dll");
// $ffi->NotifyUILanguageChange(dwFlags, pcwstrNewLanguage, pcwstrPreviousLanguage, dwReserved, pdwStatusRtrn);
// dwFlags : DWORD
// pcwstrNewLanguage : LPCWSTR optional
// pcwstrPreviousLanguage : LPCWSTR optional
// dwReserved : DWORD
// pdwStatusRtrn : DWORD* optional, 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。
// 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 Kernel32 extends StdCallLibrary {
    Kernel32 INSTANCE = Native.load("kernel32", Kernel32.class);
    boolean NotifyUILanguageChange(
        int dwFlags,   // DWORD
        WString pcwstrNewLanguage,   // LPCWSTR optional
        WString pcwstrPreviousLanguage,   // LPCWSTR optional
        int dwReserved,   // DWORD
        IntByReference pdwStatusRtrn   // DWORD* optional, out
    );
}

@[Link("kernel32")]
lib LibKERNEL32
  fun NotifyUILanguageChange = NotifyUILanguageChange(
    dwFlags : UInt32,   # DWORD
    pcwstrNewLanguage : UInt16*,   # LPCWSTR optional
    pcwstrPreviousLanguage : UInt16*,   # LPCWSTR optional
    dwReserved : UInt32,   # DWORD
    pdwStatusRtrn : UInt32*   # DWORD* optional, out
  ) : 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 NotifyUILanguageChangeNative = Int32 Function(Uint32, Pointer<Utf16>, Pointer<Utf16>, Uint32, Pointer<Uint32>);
typedef NotifyUILanguageChangeDart = int Function(int, Pointer<Utf16>, Pointer<Utf16>, int, Pointer<Uint32>);
final NotifyUILanguageChange = DynamicLibrary.open('KERNEL32.dll')
    .lookupFunction<NotifyUILanguageChangeNative, NotifyUILanguageChangeDart>('NotifyUILanguageChange');
// dwFlags : DWORD -> Uint32
// pcwstrNewLanguage : LPCWSTR optional -> Pointer<Utf16>
// pcwstrPreviousLanguage : LPCWSTR optional -> Pointer<Utf16>
// dwReserved : DWORD -> Uint32
// pdwStatusRtrn : DWORD* optional, out -> Pointer<Uint32>
// 文字列は package:ffi の "...".toNativeUtf16()/toNativeUtf8() で変換。

{$mode objfpc}{$H+}
function NotifyUILanguageChange(
  dwFlags: DWORD;   // DWORD
  pcwstrNewLanguage: PWideChar;   // LPCWSTR optional
  pcwstrPreviousLanguage: PWideChar;   // LPCWSTR optional
  dwReserved: DWORD;   // DWORD
  pdwStatusRtrn: Pointer   // DWORD* optional, out
): BOOL; stdcall;
  external 'KERNEL32.dll' name 'NotifyUILanguageChange';

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

foreign import stdcall safe "NotifyUILanguageChange"
  c_NotifyUILanguageChange :: Word32 -> CWString -> CWString -> Word32 -> Ptr Word32 -> IO CInt
-- dwFlags : DWORD -> Word32
-- pcwstrNewLanguage : LPCWSTR optional -> CWString
-- pcwstrPreviousLanguage : LPCWSTR optional -> CWString
-- dwReserved : DWORD -> Word32
-- pdwStatusRtrn : DWORD* optional, out -> Ptr 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 notifyuilanguagechange =
  foreign "NotifyUILanguageChange"
    (uint32_t @-> (ptr uint16_t) @-> (ptr uint16_t) @-> uint32_t @-> (ptr uint32_t) @-> returning int32_t)
(* dwFlags : DWORD -> uint32_t *)
(* pcwstrNewLanguage : LPCWSTR optional -> (ptr uint16_t) *)
(* pcwstrPreviousLanguage : LPCWSTR optional -> (ptr uint16_t) *)
(* dwReserved : DWORD -> uint32_t *)
(* pdwStatusRtrn : DWORD* optional, out -> (ptr 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 kernel32 (t "KERNEL32.dll"))
(cffi:use-foreign-library kernel32)

(cffi:defcfun ("NotifyUILanguageChange" notify-uilanguage-change :convention :stdcall) :int32
  (dw-flags :uint32)   ; DWORD
  (pcwstr-new-language (:string :encoding :utf-16le))   ; LPCWSTR optional
  (pcwstr-previous-language (:string :encoding :utf-16le))   ; LPCWSTR optional
  (dw-reserved :uint32)   ; DWORD
  (pdw-status-rtrn :pointer))   ; DWORD* optional, out
; isize/usize(INT_PTR/SIZE_T)は x64 前提で :int64/:uint64。x86 では :int32/:uint32。

use Win32::API;
my $NotifyUILanguageChange = Win32::API::More->new('KERNEL32',
    'BOOL NotifyUILanguageChange(DWORD dwFlags, LPCWSTR pcwstrNewLanguage, LPCWSTR pcwstrPreviousLanguage, DWORD dwReserved, LPVOID pdwStatusRtrn)');
# my $ret = $NotifyUILanguageChange->Call($dwFlags, $pcwstrNewLanguage, $pcwstrPreviousLanguage, $dwReserved, $pdwStatusRtrn);
# dwFlags : DWORD -> DWORD
# pcwstrNewLanguage : LPCWSTR optional -> LPCWSTR
# pcwstrPreviousLanguage : LPCWSTR optional -> LPCWSTR
# dwReserved : DWORD -> DWORD
# pdwStatusRtrn : DWORD* optional, out -> LPVOID
# 値渡し構造体は pack() した文字列、または Win32::API::Struct を使用。