WslIsDistributionRegistered

// Api-ms-win-wsl-api-l1-1-0.dll
#include <windows.h>

BOOL WslIsDistributionRegistered(
    LPCWSTR distributionName
);

<DllImport("Api-ms-win-wsl-api-l1-1-0.dll", ExactSpelling:=True)>
Public Shared Function WslIsDistributionRegistered(
    <MarshalAs(UnmanagedType.LPWStr)> distributionName As String   ' LPCWSTR
) As <MarshalAs(UnmanagedType.Bool)> Boolean
End Function

' distributionName : LPCWSTR
Declare PtrSafe Function WslIsDistributionRegistered Lib "api-ms-win-wsl-api-l1-1-0" ( _
    ByVal distributionName 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

WslIsDistributionRegistered = ctypes.windll.LoadLibrary("Api-ms-win-wsl-api-l1-1-0.dll").WslIsDistributionRegistered
WslIsDistributionRegistered.restype = wintypes.BOOL
WslIsDistributionRegistered.argtypes = [
    wintypes.LPCWSTR,  # distributionName : LPCWSTR
]

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('Api-ms-win-wsl-api-l1-1-0.dll')
WslIsDistributionRegistered = Fiddle::Function.new(
  lib['WslIsDistributionRegistered'],
  [
    Fiddle::TYPE_VOIDP,  # distributionName : LPCWSTR
  ],
  Fiddle::TYPE_INT)

#[link(name = "api-ms-win-wsl-api-l1-1-0")]
extern "system" {
    fn WslIsDistributionRegistered(
        distributionName: *const u16  // LPCWSTR
    ) -> i32;
}
// crates: windows-sys provides ready-made bindings for this API.

$sig = @"
[return: MarshalAs(UnmanagedType.Bool)]
[DllImport("Api-ms-win-wsl-api-l1-1-0.dll")]
public static extern bool WslIsDistributionRegistered([MarshalAs(UnmanagedType.LPWStr)] string distributionName);
"@
$api = Add-Type -MemberDefinition $sig -Name 'Api-ms-win-wsl-api-l1-1-0_WslIsDistributionRegistered' -Namespace Win32 -PassThru
# $api::WslIsDistributionRegistered(distributionName)

#uselib "Api-ms-win-wsl-api-l1-1-0.dll"
#func global WslIsDistributionRegistered "WslIsDistributionRegistered" sptr
; WslIsDistributionRegistered distributionName   ; 戻り値は stat
; distributionName : LPCWSTR -> "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 "Api-ms-win-wsl-api-l1-1-0.dll"
#cfunc global WslIsDistributionRegistered "WslIsDistributionRegistered" wstr
; res = WslIsDistributionRegistered(distributionName)
; distributionName : LPCWSTR -> "wstr"

; BOOL WslIsDistributionRegistered(LPCWSTR distributionName)
#uselib "Api-ms-win-wsl-api-l1-1-0.dll"
#cfunc global WslIsDistributionRegistered "WslIsDistributionRegistered" wstr
; res = WslIsDistributionRegistered(distributionName)
; distributionName : LPCWSTR -> "wstr"

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

var (
	api_ms_win_wsl_api_l1_1_0 = windows.NewLazySystemDLL("Api-ms-win-wsl-api-l1-1-0.dll")
	procWslIsDistributionRegistered = api_ms_win_wsl_api_l1_1_0.NewProc("WslIsDistributionRegistered")
)

// distributionName (LPCWSTR)
r1, _, err := procWslIsDistributionRegistered.Call(
	uintptr(unsafe.Pointer(windows.StringToUTF16Ptr(distributionName))),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // BOOL

function WslIsDistributionRegistered(
  distributionName: PWideChar   // LPCWSTR
): BOOL; stdcall;
  external 'Api-ms-win-wsl-api-l1-1-0.dll' name 'WslIsDistributionRegistered';

result := DllCall("Api-ms-win-wsl-api-l1-1-0\WslIsDistributionRegistered"
    , "WStr", distributionName   ; LPCWSTR
    , "Int")   ; return: BOOL

●WslIsDistributionRegistered(distributionName) = DLL("Api-ms-win-wsl-api-l1-1-0.dll", "bool WslIsDistributionRegistered(char*)")
# 呼び出し: WslIsDistributionRegistered(distributionName)
# distributionName : LPCWSTR -> "char*"
# 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 "api-ms-win-wsl-api-l1-1-0" fn WslIsDistributionRegistered(
    distributionName: [*c]const u16 // LPCWSTR
) callconv(std.os.windows.WINAPI) i32;

proc WslIsDistributionRegistered(
    distributionName: WideCString  # LPCWSTR
): int32 {.importc: "WslIsDistributionRegistered", stdcall, dynlib: "Api-ms-win-wsl-api-l1-1-0.dll".}

pragma(lib, "api-ms-win-wsl-api-l1-1-0");
extern(Windows)
int WslIsDistributionRegistered(
    const(wchar)* distributionName   // LPCWSTR
);

ccall((:WslIsDistributionRegistered, "Api-ms-win-wsl-api-l1-1-0.dll"), stdcall, Int32,
      (Cwstring,),
      distributionName)
# distributionName : LPCWSTR -> Cwstring
# stdcall は 32bit のみ意味を持つ(x64 では無視)。

local ffi = require("ffi")
ffi.cdef[[
int32_t WslIsDistributionRegistered(
    const uint16_t* distributionName);
]]
local api-ms-win-wsl-api-l1-1-0 = ffi.load("api-ms-win-wsl-api-l1-1-0")
-- api-ms-win-wsl-api-l1-1-0.WslIsDistributionRegistered(distributionName)
-- distributionName : LPCWSTR
-- 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('Api-ms-win-wsl-api-l1-1-0.dll');
const WslIsDistributionRegistered = lib.func('__stdcall', 'WslIsDistributionRegistered', 'int32_t', ['str16']);
// WslIsDistributionRegistered(distributionName)
// distributionName : LPCWSTR -> 'str16'
// 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("Api-ms-win-wsl-api-l1-1-0.dll", {
  WslIsDistributionRegistered: { parameters: ["buffer"], result: "i32" },
});
// lib.symbols.WslIsDistributionRegistered(distributionName)
// distributionName : LPCWSTR -> "buffer"
// 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 WslIsDistributionRegistered(
    const uint16_t* distributionName);
C, "Api-ms-win-wsl-api-l1-1-0.dll");
// $ffi->WslIsDistributionRegistered(distributionName);
// distributionName : LPCWSTR
// 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 Api-ms-win-wsl-api-l1-1-0 extends StdCallLibrary {
    Api-ms-win-wsl-api-l1-1-0 INSTANCE = Native.load("api-ms-win-wsl-api-l1-1-0", Api-ms-win-wsl-api-l1-1-0.class);
    boolean WslIsDistributionRegistered(
        WString distributionName   // LPCWSTR
    );
}

@[Link("api-ms-win-wsl-api-l1-1-0")]
lib LibApi-ms-win-wsl-api-l1-1-0
  fun WslIsDistributionRegistered = WslIsDistributionRegistered(
    distributionName : UInt16*   # LPCWSTR
  ) : 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 WslIsDistributionRegisteredNative = Int32 Function(Pointer<Utf16>);
typedef WslIsDistributionRegisteredDart = int Function(Pointer<Utf16>);
final WslIsDistributionRegistered = DynamicLibrary.open('Api-ms-win-wsl-api-l1-1-0.dll')
    .lookupFunction<WslIsDistributionRegisteredNative, WslIsDistributionRegisteredDart>('WslIsDistributionRegistered');
// distributionName : LPCWSTR -> Pointer<Utf16>
// 文字列は package:ffi の "...".toNativeUtf16()/toNativeUtf8() で変換。

{$mode objfpc}{$H+}
function WslIsDistributionRegistered(
  distributionName: PWideChar   // LPCWSTR
): BOOL; stdcall;
  external 'Api-ms-win-wsl-api-l1-1-0.dll' name 'WslIsDistributionRegistered';

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

foreign import stdcall safe "WslIsDistributionRegistered"
  c_WslIsDistributionRegistered :: CWString -> IO CInt
-- distributionName : LPCWSTR -> CWString
-- 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 wslisdistributionregistered =
  foreign "WslIsDistributionRegistered"
    ((ptr uint16_t) @-> returning int32_t)
(* distributionName : LPCWSTR -> (ptr uint16_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 api-ms-win-wsl-api-l1-1-0 (t "Api-ms-win-wsl-api-l1-1-0.dll"))
(cffi:use-foreign-library api-ms-win-wsl-api-l1-1-0)

(cffi:defcfun ("WslIsDistributionRegistered" wsl-is-distribution-registered :convention :stdcall) :int32
  (distribution-name (:string :encoding :utf-16le)))   ; LPCWSTR
; isize/usize(INT_PTR/SIZE_T)は x64 前提で :int64/:uint64。x86 では :int32/:uint32。

use Win32::API;
my $WslIsDistributionRegistered = Win32::API::More->new('Api-ms-win-wsl-api-l1-1-0',
    'BOOL WslIsDistributionRegistered(LPCWSTR distributionName)');
# my $ret = $WslIsDistributionRegistered->Call($distributionName);
# distributionName : LPCWSTR -> LPCWSTR
# 値渡し構造体は pack() した文字列、または Win32::API::Struct を使用。