ldap_first_attributeA

// WLDAP32.dll  (ANSI / -A)
#include <windows.h>

LPSTR ldap_first_attributeA(
    LDAP* ld,
    LDAPMessage* entry,
    BerElement** ptr
);

<DllImport("WLDAP32.dll", CharSet:=CharSet.Ansi, ExactSpelling:=True, CallingConvention:=CallingConvention.Cdecl)>
Public Shared Function ldap_first_attributeA(
    ld As IntPtr,   ' LDAP* in/out
    entry As IntPtr,   ' LDAPMessage* in/out
    ptr As IntPtr   ' BerElement** in/out
) As IntPtr
End Function

' ld : LDAP* in/out
' entry : LDAPMessage* in/out
' ptr : BerElement** in/out
Declare PtrSafe Function ldap_first_attributeA Lib "wldap32" ( _
    ByVal ld As LongPtr, _
    ByVal entry As LongPtr, _
    ByVal ptr As LongPtr) As LongPtr
' VBA7前提(PtrSafe)。32bit Office では LongPtr→Long。Integer=16bit / Long=32bit / LongLong=64bit。

import ctypes
from ctypes import wintypes

ldap_first_attributeA = ctypes.cdll.wldap32.ldap_first_attributeA
ldap_first_attributeA.restype = wintypes.LPSTR
ldap_first_attributeA.argtypes = [
    ctypes.c_void_p,  # ld : LDAP* in/out
    ctypes.c_void_p,  # entry : LDAPMessage* in/out
    ctypes.c_void_p,  # ptr : BerElement** in/out
]

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('WLDAP32.dll')
ldap_first_attributeA = Fiddle::Function.new(
  lib['ldap_first_attributeA'],
  [
    Fiddle::TYPE_VOIDP,  # ld : LDAP* in/out
    Fiddle::TYPE_VOIDP,  # entry : LDAPMessage* in/out
    Fiddle::TYPE_VOIDP,  # ptr : BerElement** in/out
  ],
  Fiddle::TYPE_VOIDP, Fiddle::Function::CDECL)

#[link(name = "wldap32")]
extern "C" {
    fn ldap_first_attributeA(
        ld: *mut LDAP,  // LDAP* in/out
        entry: *mut LDAPMessage,  // LDAPMessage* in/out
        ptr: *mut *mut BerElement  // BerElement** in/out
    ) -> *mut u8;
}
// crates: windows-sys provides ready-made bindings for this API.

$sig = @"
[DllImport("WLDAP32.dll", CharSet = CharSet.Ansi, CallingConvention = CallingConvention.Cdecl)]
public static extern IntPtr ldap_first_attributeA(IntPtr ld, IntPtr entry, IntPtr ptr);
"@
$api = Add-Type -MemberDefinition $sig -Name 'WLDAP32_ldap_first_attributeA' -Namespace Win32 -PassThru
# $api::ldap_first_attributeA(ld, entry, ptr)

#uselib "WLDAP32.dll"
#func global ldap_first_attributeA "ldap_first_attributeA" sptr, sptr, sptr
; ldap_first_attributeA varptr(ld), varptr(entry), varptr(ptr)   ; 戻り値は stat
; ld : LDAP* in/out -> "sptr"
; entry : LDAPMessage* in/out -> "sptr"
; ptr : BerElement** 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 "WLDAP32.dll"
#cfunc global ldap_first_attributeA "ldap_first_attributeA" var, var, var
; res = ldap_first_attributeA(ld, entry, ptr)
; ld : LDAP* in/out -> "var"
; entry : LDAPMessage* in/out -> "var"
; ptr : BerElement** 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。

; LPSTR ldap_first_attributeA(LDAP* ld, LDAPMessage* entry, BerElement** ptr)
#uselib "WLDAP32.dll"
#cfunc global ldap_first_attributeA "ldap_first_attributeA" var, var, var
; res = ldap_first_attributeA(ld, entry, ptr)
; ld : LDAP* in/out -> "var"
; entry : LDAPMessage* in/out -> "var"
; ptr : BerElement** 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 (
	wldap32 = windows.NewLazySystemDLL("WLDAP32.dll")
	procldap_first_attributeA = wldap32.NewProc("ldap_first_attributeA")
)

// ld (LDAP* in/out), entry (LDAPMessage* in/out), ptr (BerElement** in/out)
r1, _, err := procldap_first_attributeA.Call(
	uintptr(ld),
	uintptr(entry),
	uintptr(ptr),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // LPSTR

function ldap_first_attributeA(
  ld: Pointer;   // LDAP* in/out
  entry: Pointer;   // LDAPMessage* in/out
  ptr: Pointer   // BerElement** in/out
): PAnsiChar; cdecl;
  external 'WLDAP32.dll' name 'ldap_first_attributeA';

result := DllCall("WLDAP32\ldap_first_attributeA"
    , "Ptr", ld   ; LDAP* in/out
    , "Ptr", entry   ; LDAPMessage* in/out
    , "Ptr", ptr   ; BerElement** in/out
    , "Cdecl Ptr")   ; return: LPSTR

●ldap_first_attributeA(ld, entry, ptr) = DLL("WLDAP32.dll", "char* ldap_first_attributeA(void*, void*, void*)")
# 呼び出し: ldap_first_attributeA(ld, entry, ptr)
# ld : LDAP* in/out -> "void*"
# entry : LDAPMessage* in/out -> "void*"
# ptr : BerElement** 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。