ber_next_element

// WLDAP32.dll
#include <windows.h>

DWORD ber_next_element(
    BerElement* pBerElement,
    DWORD* pLen,
    LPSTR opaque
);

<DllImport("WLDAP32.dll", ExactSpelling:=True, CallingConvention:=CallingConvention.Cdecl)>
Public Shared Function ber_next_element(
    pBerElement As IntPtr,   ' BerElement* in/out
    ByRef pLen As UInteger,   ' DWORD* in/out
    <MarshalAs(UnmanagedType.LPStr)> opaque As String   ' LPSTR
) As UInteger
End Function

' pBerElement : BerElement* in/out
' pLen : DWORD* in/out
' opaque : LPSTR
Declare PtrSafe Function ber_next_element Lib "wldap32" ( _
    ByVal pBerElement As LongPtr, _
    ByRef pLen As Long, _
    ByVal opaque As String) As Long
' VBA7前提(PtrSafe)。32bit Office では LongPtr→Long。Integer=16bit / Long=32bit / LongLong=64bit。

import ctypes
from ctypes import wintypes

ber_next_element = ctypes.cdll.wldap32.ber_next_element
ber_next_element.restype = wintypes.DWORD
ber_next_element.argtypes = [
    ctypes.c_void_p,  # pBerElement : BerElement* in/out
    ctypes.POINTER(wintypes.DWORD),  # pLen : DWORD* in/out
    wintypes.LPCSTR,  # opaque : LPSTR
]

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('WLDAP32.dll')
ber_next_element = Fiddle::Function.new(
  lib['ber_next_element'],
  [
    Fiddle::TYPE_VOIDP,  # pBerElement : BerElement* in/out
    Fiddle::TYPE_VOIDP,  # pLen : DWORD* in/out
    Fiddle::TYPE_VOIDP,  # opaque : LPSTR
  ],
  -Fiddle::TYPE_INT, Fiddle::Function::CDECL)

#[link(name = "wldap32")]
extern "C" {
    fn ber_next_element(
        pBerElement: *mut BerElement,  // BerElement* in/out
        pLen: *mut u32,  // DWORD* in/out
        opaque: *mut u8  // LPSTR
    ) -> u32;
}
// crates: windows-sys provides ready-made bindings for this API.

$sig = @"
[DllImport("WLDAP32.dll", CallingConvention = CallingConvention.Cdecl)]
public static extern uint ber_next_element(IntPtr pBerElement, ref uint pLen, [MarshalAs(UnmanagedType.LPStr)] string opaque);
"@
$api = Add-Type -MemberDefinition $sig -Name 'WLDAP32_ber_next_element' -Namespace Win32 -PassThru
# $api::ber_next_element(pBerElement, pLen, opaque)

#uselib "WLDAP32.dll"
#func global ber_next_element "ber_next_element" sptr, sptr, sptr
; ber_next_element varptr(pBerElement), varptr(pLen), opaque   ; 戻り値は stat
; pBerElement : BerElement* in/out -> "sptr"
; pLen : DWORD* in/out -> "sptr"
; opaque : LPSTR -> "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 "WLDAP32.dll"
#cfunc global ber_next_element "ber_next_element" var, var, str
; res = ber_next_element(pBerElement, pLen, opaque)
; pBerElement : BerElement* in/out -> "var"
; pLen : DWORD* in/out -> "var"
; opaque : LPSTR -> "str"
; ※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。

; DWORD ber_next_element(BerElement* pBerElement, DWORD* pLen, LPSTR opaque)
#uselib "WLDAP32.dll"
#cfunc global ber_next_element "ber_next_element" var, var, str
; res = ber_next_element(pBerElement, pLen, opaque)
; pBerElement : BerElement* in/out -> "var"
; pLen : DWORD* in/out -> "var"
; opaque : LPSTR -> "str"
; ※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 (
	wldap32 = windows.NewLazySystemDLL("WLDAP32.dll")
	procber_next_element = wldap32.NewProc("ber_next_element")
)

// pBerElement (BerElement* in/out), pLen (DWORD* in/out), opaque (LPSTR)
r1, _, err := procber_next_element.Call(
	uintptr(pBerElement),
	uintptr(pLen),
	uintptr(unsafe.Pointer(windows.BytePtrFromString(opaque))),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // DWORD

function ber_next_element(
  pBerElement: Pointer;   // BerElement* in/out
  pLen: Pointer;   // DWORD* in/out
  opaque: PAnsiChar   // LPSTR
): DWORD; cdecl;
  external 'WLDAP32.dll' name 'ber_next_element';

result := DllCall("WLDAP32\ber_next_element"
    , "Ptr", pBerElement   ; BerElement* in/out
    , "Ptr", pLen   ; DWORD* in/out
    , "AStr", opaque   ; LPSTR
    , "Cdecl UInt")   ; return: DWORD

●ber_next_element(pBerElement, pLen, opaque) = DLL("WLDAP32.dll", "dword ber_next_element(void*, void*, char*)")
# 呼び出し: ber_next_element(pBerElement, pLen, opaque)
# pBerElement : BerElement* in/out -> "void*"
# pLen : DWORD* in/out -> "void*"
# opaque : LPSTR -> "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)。
# ※cdecl関数。DLL()宣言はstdcall前提。cdeclは EXEC_PTR(`cdecl`,…) を使用。