uloc_acceptLanguage

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

INT uloc_acceptLanguage(
    LPSTR result,
    INT resultAvailable,
    UAcceptResult* outResult,
    const CHAR** acceptList,
    INT acceptListCount,
    UEnumeration* availableLocales,
    UErrorCode* status
);

<DllImport("icuuc.dll", ExactSpelling:=True, CallingConvention:=CallingConvention.Cdecl)>
Public Shared Function uloc_acceptLanguage(
    <MarshalAs(UnmanagedType.LPStr)> result As String,   ' LPSTR
    resultAvailable As Integer,   ' INT
    ByRef outResult As Integer,   ' UAcceptResult* in/out
    acceptList As IntPtr,   ' CHAR**
    acceptListCount As Integer,   ' INT
    ByRef availableLocales As IntPtr,   ' UEnumeration* in/out
    ByRef status As Integer   ' UErrorCode* in/out
) As Integer
End Function

' result : LPSTR
' resultAvailable : INT
' outResult : UAcceptResult* in/out
' acceptList : CHAR**
' acceptListCount : INT
' availableLocales : UEnumeration* in/out
' status : UErrorCode* in/out
Declare PtrSafe Function uloc_acceptLanguage Lib "icuuc" ( _
    ByVal result As String, _
    ByVal resultAvailable As Long, _
    ByRef outResult As Long, _
    ByVal acceptList As LongPtr, _
    ByVal acceptListCount As Long, _
    ByRef availableLocales As LongPtr, _
    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_acceptLanguage = ctypes.cdll.icuuc.uloc_acceptLanguage
uloc_acceptLanguage.restype = ctypes.c_int
uloc_acceptLanguage.argtypes = [
    wintypes.LPCSTR,  # result : LPSTR
    ctypes.c_int,  # resultAvailable : INT
    ctypes.c_void_p,  # outResult : UAcceptResult* in/out
    ctypes.c_void_p,  # acceptList : CHAR**
    ctypes.c_int,  # acceptListCount : INT
    ctypes.c_void_p,  # availableLocales : UEnumeration* in/out
    ctypes.c_void_p,  # status : UErrorCode* in/out
]

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('icuuc.dll')
uloc_acceptLanguage = Fiddle::Function.new(
  lib['uloc_acceptLanguage'],
  [
    Fiddle::TYPE_VOIDP,  # result : LPSTR
    Fiddle::TYPE_INT,  # resultAvailable : INT
    Fiddle::TYPE_VOIDP,  # outResult : UAcceptResult* in/out
    Fiddle::TYPE_VOIDP,  # acceptList : CHAR**
    Fiddle::TYPE_INT,  # acceptListCount : INT
    Fiddle::TYPE_VOIDP,  # availableLocales : UEnumeration* in/out
    Fiddle::TYPE_VOIDP,  # status : UErrorCode* in/out
  ],
  Fiddle::TYPE_INT, Fiddle::Function::CDECL)

#[link(name = "icuuc")]
extern "C" {
    fn uloc_acceptLanguage(
        result: *mut u8,  // LPSTR
        resultAvailable: i32,  // INT
        outResult: *mut i32,  // UAcceptResult* in/out
        acceptList: *const *const i8,  // CHAR**
        acceptListCount: i32,  // INT
        availableLocales: *mut isize,  // UEnumeration* in/out
        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_acceptLanguage([MarshalAs(UnmanagedType.LPStr)] string result, int resultAvailable, ref int outResult, IntPtr acceptList, int acceptListCount, ref IntPtr availableLocales, ref int status);
"@
$api = Add-Type -MemberDefinition $sig -Name 'icuuc_uloc_acceptLanguage' -Namespace Win32 -PassThru
# $api::uloc_acceptLanguage(result, resultAvailable, outResult, acceptList, acceptListCount, availableLocales, status)

#uselib "icuuc.dll"
#func global uloc_acceptLanguage "uloc_acceptLanguage" sptr, sptr, sptr, sptr, sptr, sptr, sptr
; uloc_acceptLanguage result, resultAvailable, outResult, varptr(acceptList), acceptListCount, availableLocales, status   ; 戻り値は stat
; result : LPSTR -> "sptr"
; resultAvailable : INT -> "sptr"
; outResult : UAcceptResult* in/out -> "sptr"
; acceptList : CHAR** -> "sptr"
; acceptListCount : INT -> "sptr"
; availableLocales : UEnumeration* in/out -> "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。

#uselib "icuuc.dll"
#cfunc global uloc_acceptLanguage "uloc_acceptLanguage" str, int, int, var, int, int, int
; res = uloc_acceptLanguage(result, resultAvailable, outResult, acceptList, acceptListCount, availableLocales, status)
; result : LPSTR -> "str"
; resultAvailable : INT -> "int"
; outResult : UAcceptResult* in/out -> "int"
; acceptList : CHAR** -> "var"
; acceptListCount : INT -> "int"
; availableLocales : UEnumeration* in/out -> "int"
; status : UErrorCode* in/out -> "int"
; ※出力/バッファ引数は var 方式(変数を直接渡す)。varptr 方式にも切替可。

; INT uloc_acceptLanguage(LPSTR result, INT resultAvailable, UAcceptResult* outResult, CHAR** acceptList, INT acceptListCount, UEnumeration* availableLocales, UErrorCode* status)
#uselib "icuuc.dll"
#cfunc global uloc_acceptLanguage "uloc_acceptLanguage" str, int, int, var, int, int, int
; res = uloc_acceptLanguage(result, resultAvailable, outResult, acceptList, acceptListCount, availableLocales, status)
; result : LPSTR -> "str"
; resultAvailable : INT -> "int"
; outResult : UAcceptResult* in/out -> "int"
; acceptList : CHAR** -> "var"
; acceptListCount : INT -> "int"
; availableLocales : UEnumeration* in/out -> "int"
; status : UErrorCode* in/out -> "int"
; ※出力/バッファ引数は var 方式(変数を直接渡す)。varptr 方式にも切替可。

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

var (
	icuuc = windows.NewLazySystemDLL("icuuc.dll")
	proculoc_acceptLanguage = icuuc.NewProc("uloc_acceptLanguage")
)

// result (LPSTR), resultAvailable (INT), outResult (UAcceptResult* in/out), acceptList (CHAR**), acceptListCount (INT), availableLocales (UEnumeration* in/out), status (UErrorCode* in/out)
r1, _, err := proculoc_acceptLanguage.Call(
	uintptr(unsafe.Pointer(windows.BytePtrFromString(result))),
	uintptr(resultAvailable),
	uintptr(outResult),
	uintptr(acceptList),
	uintptr(acceptListCount),
	uintptr(availableLocales),
	uintptr(status),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // INT

function uloc_acceptLanguage(
  result: PAnsiChar;   // LPSTR
  resultAvailable: Integer;   // INT
  outResult: Pointer;   // UAcceptResult* in/out
  acceptList: Pointer;   // CHAR**
  acceptListCount: Integer;   // INT
  availableLocales: Pointer;   // UEnumeration* in/out
  status: Pointer   // UErrorCode* in/out
): Integer; cdecl;
  external 'icuuc.dll' name 'uloc_acceptLanguage';

result := DllCall("icuuc\uloc_acceptLanguage"
    , "AStr", result   ; LPSTR
    , "Int", resultAvailable   ; INT
    , "Ptr", outResult   ; UAcceptResult* in/out
    , "Ptr", acceptList   ; CHAR**
    , "Int", acceptListCount   ; INT
    , "Ptr", availableLocales   ; UEnumeration* in/out
    , "Ptr", status   ; UErrorCode* in/out
    , "Cdecl Int")   ; return: INT

●uloc_acceptLanguage(result, resultAvailable, outResult, acceptList, acceptListCount, availableLocales, status) = DLL("icuuc.dll", "int uloc_acceptLanguage(char*, int, void*, void*, int, void*, void*)")
# 呼び出し: uloc_acceptLanguage(result, resultAvailable, outResult, acceptList, acceptListCount, availableLocales, status)
# result : LPSTR -> "char*"
# resultAvailable : INT -> "int"
# outResult : UAcceptResult* in/out -> "void*"
# acceptList : CHAR** -> "void*"
# acceptListCount : INT -> "int"
# availableLocales : UEnumeration* in/out -> "void*"
# 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。