ldap_initW

// WLDAP32.dll  (Unicode / -W)
#include <windows.h>

LDAP* ldap_initW(
    LPCWSTR HostName,
    DWORD PortNumber
);

<DllImport("WLDAP32.dll", CharSet:=CharSet.Unicode, ExactSpelling:=True, CallingConvention:=CallingConvention.Cdecl)>
Public Shared Function ldap_initW(
    <MarshalAs(UnmanagedType.LPWStr)> HostName As String,   ' LPCWSTR
    PortNumber As UInteger   ' DWORD
) As IntPtr
End Function

' HostName : LPCWSTR
' PortNumber : DWORD
Declare PtrSafe Function ldap_initW Lib "wldap32" ( _
    ByVal HostName As LongPtr, _
    ByVal PortNumber As Long) As LongPtr
' Unicode(W): 文字列は ByVal As LongPtr とし StrPtr(unicodeStr) を渡す
' VBA7前提(PtrSafe)。32bit Office では LongPtr→Long。Integer=16bit / Long=32bit / LongLong=64bit。

import ctypes
from ctypes import wintypes

ldap_initW = ctypes.cdll.wldap32.ldap_initW
ldap_initW.restype = ctypes.c_void_p
ldap_initW.argtypes = [
    wintypes.LPCWSTR,  # HostName : LPCWSTR
    wintypes.DWORD,  # PortNumber : DWORD
]

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('WLDAP32.dll')
ldap_initW = Fiddle::Function.new(
  lib['ldap_initW'],
  [
    Fiddle::TYPE_VOIDP,  # HostName : LPCWSTR
    -Fiddle::TYPE_INT,  # PortNumber : DWORD
  ],
  Fiddle::TYPE_VOIDP, Fiddle::Function::CDECL)
# Wide strings: pass str.encode("UTF-16LE") + "\x00\x00"

#[link(name = "wldap32")]
extern "C" {
    fn ldap_initW(
        HostName: *const u16,  // LPCWSTR
        PortNumber: u32  // DWORD
    ) -> *mut LDAP;
}
// crates: windows-sys provides ready-made bindings for this API.

$sig = @"
[DllImport("WLDAP32.dll", CharSet = CharSet.Unicode, CallingConvention = CallingConvention.Cdecl)]
public static extern IntPtr ldap_initW([MarshalAs(UnmanagedType.LPWStr)] string HostName, uint PortNumber);
"@
$api = Add-Type -MemberDefinition $sig -Name 'WLDAP32_ldap_initW' -Namespace Win32 -PassThru
# $api::ldap_initW(HostName, PortNumber)

#uselib "WLDAP32.dll"
#func global ldap_initW "ldap_initW" wptr, wptr
; ldap_initW HostName, PortNumber   ; 戻り値は stat
; HostName : LPCWSTR -> "wptr"
; PortNumber : DWORD -> "wptr"
; ※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_initW "ldap_initW" wstr, int
; res = ldap_initW(HostName, PortNumber)
; HostName : LPCWSTR -> "wstr"
; PortNumber : DWORD -> "int"

; LDAP* ldap_initW(LPCWSTR HostName, DWORD PortNumber)
#uselib "WLDAP32.dll"
#cfunc global ldap_initW "ldap_initW" wstr, int
; res = ldap_initW(HostName, PortNumber)
; HostName : LPCWSTR -> "wstr"
; PortNumber : DWORD -> "int"

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

var (
	wldap32 = windows.NewLazySystemDLL("WLDAP32.dll")
	procldap_initW = wldap32.NewProc("ldap_initW")
)

// HostName (LPCWSTR), PortNumber (DWORD)
r1, _, err := procldap_initW.Call(
	uintptr(unsafe.Pointer(windows.StringToUTF16Ptr(HostName))),
	uintptr(PortNumber),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // LDAP*

function ldap_initW(
  HostName: PWideChar;   // LPCWSTR
  PortNumber: DWORD   // DWORD
): Pointer; cdecl;
  external 'WLDAP32.dll' name 'ldap_initW';

result := DllCall("WLDAP32\ldap_initW"
    , "WStr", HostName   ; LPCWSTR
    , "UInt", PortNumber   ; DWORD
    , "Cdecl Ptr")   ; return: LDAP*

●ldap_initW(HostName, PortNumber) = DLL("WLDAP32.dll", "void* ldap_initW(char*, dword)")
# 呼び出し: ldap_initW(HostName, PortNumber)
# HostName : LPCWSTR -> "char*"
# PortNumber : DWORD -> "dword"
# 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)。
# ※-W(Unicode)関数。なでしこ1はANSIのため -A 版の利用を推奨。
# ※cdecl関数。DLL()宣言はstdcall前提。cdeclは EXEC_PTR(`cdecl`,…) を使用。