GetAcceptLanguagesA

// SHLWAPI.dll  (ANSI / -A)
#include <windows.h>

HRESULT GetAcceptLanguagesA(
    LPSTR pszLanguages,
    DWORD* pcchLanguages
);

<DllImport("SHLWAPI.dll", CharSet:=CharSet.Ansi, ExactSpelling:=True)>
Public Shared Function GetAcceptLanguagesA(
    <MarshalAs(UnmanagedType.LPStr)> pszLanguages As System.Text.StringBuilder,   ' LPSTR out
    ByRef pcchLanguages As UInteger   ' DWORD* in/out
) As Integer
End Function

' pszLanguages : LPSTR out
' pcchLanguages : DWORD* in/out
Declare PtrSafe Function GetAcceptLanguagesA Lib "shlwapi" ( _
    ByVal pszLanguages As String, _
    ByRef pcchLanguages 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

GetAcceptLanguagesA = ctypes.windll.shlwapi.GetAcceptLanguagesA
GetAcceptLanguagesA.restype = ctypes.c_int
GetAcceptLanguagesA.argtypes = [
    wintypes.LPSTR,  # pszLanguages : LPSTR out
    ctypes.POINTER(wintypes.DWORD),  # pcchLanguages : DWORD* in/out
]

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('SHLWAPI.dll')
GetAcceptLanguagesA = Fiddle::Function.new(
  lib['GetAcceptLanguagesA'],
  [
    Fiddle::TYPE_VOIDP,  # pszLanguages : LPSTR out
    Fiddle::TYPE_VOIDP,  # pcchLanguages : DWORD* in/out
  ],
  Fiddle::TYPE_INT)

#[link(name = "shlwapi")]
extern "system" {
    fn GetAcceptLanguagesA(
        pszLanguages: *mut u8,  // LPSTR out
        pcchLanguages: *mut u32  // DWORD* in/out
    ) -> i32;
}
// crates: windows-sys provides ready-made bindings for this API.

$sig = @"
[DllImport("SHLWAPI.dll", CharSet = CharSet.Ansi)]
public static extern int GetAcceptLanguagesA([MarshalAs(UnmanagedType.LPStr)] System.Text.StringBuilder pszLanguages, ref uint pcchLanguages);
"@
$api = Add-Type -MemberDefinition $sig -Name 'SHLWAPI_GetAcceptLanguagesA' -Namespace Win32 -PassThru
# $api::GetAcceptLanguagesA(pszLanguages, pcchLanguages)

#uselib "SHLWAPI.dll"
#func global GetAcceptLanguagesA "GetAcceptLanguagesA" sptr, sptr
; GetAcceptLanguagesA varptr(pszLanguages), varptr(pcchLanguages)   ; 戻り値は stat
; pszLanguages : LPSTR out -> "sptr"
; pcchLanguages : DWORD* 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 "SHLWAPI.dll"
#cfunc global GetAcceptLanguagesA "GetAcceptLanguagesA" var, var
; res = GetAcceptLanguagesA(pszLanguages, pcchLanguages)
; pszLanguages : LPSTR out -> "var"
; pcchLanguages : DWORD* in/out -> "var"
; ※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。

; HRESULT GetAcceptLanguagesA(LPSTR pszLanguages, DWORD* pcchLanguages)
#uselib "SHLWAPI.dll"
#cfunc global GetAcceptLanguagesA "GetAcceptLanguagesA" var, var
; res = GetAcceptLanguagesA(pszLanguages, pcchLanguages)
; pszLanguages : LPSTR out -> "var"
; pcchLanguages : DWORD* in/out -> "var"
; ※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 (
	shlwapi = windows.NewLazySystemDLL("SHLWAPI.dll")
	procGetAcceptLanguagesA = shlwapi.NewProc("GetAcceptLanguagesA")
)

// pszLanguages (LPSTR out), pcchLanguages (DWORD* in/out)
r1, _, err := procGetAcceptLanguagesA.Call(
	uintptr(pszLanguages),
	uintptr(pcchLanguages),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // HRESULT

function GetAcceptLanguagesA(
  pszLanguages: PAnsiChar;   // LPSTR out
  pcchLanguages: Pointer   // DWORD* in/out
): Integer; stdcall;
  external 'SHLWAPI.dll' name 'GetAcceptLanguagesA';

result := DllCall("SHLWAPI\GetAcceptLanguagesA"
    , "Ptr", pszLanguages   ; LPSTR out
    , "Ptr", pcchLanguages   ; DWORD* in/out
    , "Int")   ; return: HRESULT

●GetAcceptLanguagesA(pszLanguages, pcchLanguages) = DLL("SHLWAPI.dll", "int GetAcceptLanguagesA(char*, void*)")
# 呼び出し: GetAcceptLanguagesA(pszLanguages, pcchLanguages)
# pszLanguages : LPSTR out -> "char*"
# pcchLanguages : DWORD* 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)。