GetKeyboardLayout

// USER32.dll
#include <windows.h>

HKL GetKeyboardLayout(
    DWORD idThread
);

<DllImport("USER32.dll", ExactSpelling:=True)>
Public Shared Function GetKeyboardLayout(
    idThread As UInteger   ' DWORD
) As IntPtr
End Function

' idThread : DWORD
Declare PtrSafe Function GetKeyboardLayout Lib "user32" ( _
    ByVal idThread 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

GetKeyboardLayout = ctypes.windll.user32.GetKeyboardLayout
GetKeyboardLayout.restype = ctypes.c_void_p
GetKeyboardLayout.argtypes = [
    wintypes.DWORD,  # idThread : DWORD
]

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('USER32.dll')
GetKeyboardLayout = Fiddle::Function.new(
  lib['GetKeyboardLayout'],
  [
    -Fiddle::TYPE_INT,  # idThread : DWORD
  ],
  Fiddle::TYPE_VOIDP)

#[link(name = "user32")]
extern "system" {
    fn GetKeyboardLayout(
        idThread: u32  // DWORD
    ) -> *mut core::ffi::c_void;
}
// crates: windows-sys provides ready-made bindings for this API.

$sig = @"
[DllImport("USER32.dll")]
public static extern IntPtr GetKeyboardLayout(uint idThread);
"@
$api = Add-Type -MemberDefinition $sig -Name 'USER32_GetKeyboardLayout' -Namespace Win32 -PassThru
# $api::GetKeyboardLayout(idThread)

#uselib "USER32.dll"
#func global GetKeyboardLayout "GetKeyboardLayout" sptr
; GetKeyboardLayout idThread   ; 戻り値は stat
; idThread : DWORD -> "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。

#uselib "USER32.dll"
#cfunc global GetKeyboardLayout "GetKeyboardLayout" int
; res = GetKeyboardLayout(idThread)
; idThread : DWORD -> "int"

; HKL GetKeyboardLayout(DWORD idThread)
#uselib "USER32.dll"
#cfunc global GetKeyboardLayout "GetKeyboardLayout" int
; res = GetKeyboardLayout(idThread)
; idThread : DWORD -> "int"

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

var (
	user32 = windows.NewLazySystemDLL("USER32.dll")
	procGetKeyboardLayout = user32.NewProc("GetKeyboardLayout")
)

// idThread (DWORD)
r1, _, err := procGetKeyboardLayout.Call(
	uintptr(idThread),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // HKL

function GetKeyboardLayout(
  idThread: DWORD   // DWORD
): THandle; stdcall;
  external 'USER32.dll' name 'GetKeyboardLayout';

result := DllCall("USER32\GetKeyboardLayout"
    , "UInt", idThread   ; DWORD
    , "Ptr")   ; return: HKL

●GetKeyboardLayout(idThread) = DLL("USER32.dll", "void* GetKeyboardLayout(dword)")
# 呼び出し: GetKeyboardLayout(idThread)
# idThread : DWORD -> "dword"
# 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 "user32" fn GetKeyboardLayout(
    idThread: u32 // DWORD
) callconv(std.os.windows.WINAPI) ?*anyopaque;

proc GetKeyboardLayout(
    idThread: uint32  # DWORD
): pointer {.importc: "GetKeyboardLayout", stdcall, dynlib: "USER32.dll".}

pragma(lib, "user32");
extern(Windows)
void* GetKeyboardLayout(
    uint idThread   // DWORD
);

ccall((:GetKeyboardLayout, "USER32.dll"), stdcall, Ptr{Cvoid},
      (UInt32,),
      idThread)
# idThread : DWORD -> UInt32
# stdcall は 32bit のみ意味を持つ(x64 では無視)。

local ffi = require("ffi")
ffi.cdef[[
void* GetKeyboardLayout(
    uint32_t idThread);
]]
local user32 = ffi.load("user32")
-- user32.GetKeyboardLayout(idThread)
-- idThread : DWORD
-- 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('USER32.dll');
const GetKeyboardLayout = lib.func('__stdcall', 'GetKeyboardLayout', 'void *', ['uint32_t']);
// GetKeyboardLayout(idThread)
// idThread : DWORD -> '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("USER32.dll", {
  GetKeyboardLayout: { parameters: ["u32"], result: "pointer" },
});
// lib.symbols.GetKeyboardLayout(idThread)
// idThread : DWORD -> "u32"
// 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* GetKeyboardLayout(
    uint32_t idThread);
C, "USER32.dll");
// $ffi->GetKeyboardLayout(idThread);
// idThread : DWORD
// 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 User32 extends StdCallLibrary {
    User32 INSTANCE = Native.load("user32", User32.class);
    Pointer GetKeyboardLayout(
        int idThread   // DWORD
    );
}

@[Link("user32")]
lib LibUSER32
  fun GetKeyboardLayout = GetKeyboardLayout(
    idThread : UInt32   # DWORD
  ) : 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 GetKeyboardLayoutNative = Pointer<Void> Function(Uint32);
typedef GetKeyboardLayoutDart = Pointer<Void> Function(int);
final GetKeyboardLayout = DynamicLibrary.open('USER32.dll')
    .lookupFunction<GetKeyboardLayoutNative, GetKeyboardLayoutDart>('GetKeyboardLayout');
// idThread : DWORD -> Uint32
// 文字列は package:ffi の "...".toNativeUtf16()/toNativeUtf8() で変換。

{$mode objfpc}{$H+}
function GetKeyboardLayout(
  idThread: DWORD   // DWORD
): THandle; stdcall;
  external 'USER32.dll' name 'GetKeyboardLayout';

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

foreign import stdcall safe "GetKeyboardLayout"
  c_GetKeyboardLayout :: Word32 -> IO (Ptr ())
-- idThread : DWORD -> 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 getkeyboardlayout =
  foreign "GetKeyboardLayout"
    (uint32_t @-> returning (ptr void))
(* idThread : DWORD -> 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 user32 (t "USER32.dll"))
(cffi:use-foreign-library user32)

(cffi:defcfun ("GetKeyboardLayout" get-keyboard-layout :convention :stdcall) :pointer
  (id-thread :uint32))   ; DWORD
; isize/usize(INT_PTR/SIZE_T)は x64 前提で :int64/:uint64。x86 では :int32/:uint32。

use Win32::API;
my $GetKeyboardLayout = Win32::API::More->new('USER32',
    'HANDLE GetKeyboardLayout(DWORD idThread)');
# my $ret = $GetKeyboardLayout->Call($idThread);
# idThread : DWORD -> DWORD
# 値渡し構造体は pack() した文字列、または Win32::API::Struct を使用。