OpenBackupEventLogW

// ADVAPI32.dll  (Unicode / -W)
#include <windows.h>

HANDLE OpenBackupEventLogW(
    LPCWSTR lpUNCServerName,   // optional
    LPCWSTR lpFileName
);

<DllImport("ADVAPI32.dll", CharSet:=CharSet.Unicode, SetLastError:=True, ExactSpelling:=True)>
Public Shared Function OpenBackupEventLogW(
    <MarshalAs(UnmanagedType.LPWStr)> lpUNCServerName As String,   ' LPCWSTR optional
    <MarshalAs(UnmanagedType.LPWStr)> lpFileName As String   ' LPCWSTR
) As IntPtr
End Function

' lpUNCServerName : LPCWSTR optional
' lpFileName : LPCWSTR
Declare PtrSafe Function OpenBackupEventLogW Lib "advapi32" ( _
    ByVal lpUNCServerName As LongPtr, _
    ByVal lpFileName As LongPtr) 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

OpenBackupEventLogW = ctypes.windll.advapi32.OpenBackupEventLogW
OpenBackupEventLogW.restype = ctypes.c_void_p
OpenBackupEventLogW.argtypes = [
    wintypes.LPCWSTR,  # lpUNCServerName : LPCWSTR optional
    wintypes.LPCWSTR,  # lpFileName : LPCWSTR
]
# GetLastError: use ctypes.GetLastError() (or ctypes.WinDLL(use_last_error=True))

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('ADVAPI32.dll')
OpenBackupEventLogW = Fiddle::Function.new(
  lib['OpenBackupEventLogW'],
  [
    Fiddle::TYPE_VOIDP,  # lpUNCServerName : LPCWSTR optional
    Fiddle::TYPE_VOIDP,  # lpFileName : LPCWSTR
  ],
  Fiddle::TYPE_VOIDP)
# Wide strings: pass str.encode("UTF-16LE") + "\x00\x00"

#[link(name = "advapi32")]
extern "system" {
    fn OpenBackupEventLogW(
        lpUNCServerName: *const u16,  // LPCWSTR optional
        lpFileName: *const u16  // LPCWSTR
    ) -> *mut core::ffi::c_void;
}
// crates: windows-sys provides ready-made bindings for this API.

$sig = @"
[DllImport("ADVAPI32.dll", CharSet = CharSet.Unicode, SetLastError = true)]
public static extern IntPtr OpenBackupEventLogW([MarshalAs(UnmanagedType.LPWStr)] string lpUNCServerName, [MarshalAs(UnmanagedType.LPWStr)] string lpFileName);
"@
$api = Add-Type -MemberDefinition $sig -Name 'ADVAPI32_OpenBackupEventLogW' -Namespace Win32 -PassThru
# $api::OpenBackupEventLogW(lpUNCServerName, lpFileName)

#uselib "ADVAPI32.dll"
#func global OpenBackupEventLogW "OpenBackupEventLogW" wptr, wptr
; OpenBackupEventLogW lpUNCServerName, lpFileName   ; 戻り値は stat
; lpUNCServerName : LPCWSTR optional -> "wptr"
; lpFileName : LPCWSTR -> "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 "ADVAPI32.dll"
#cfunc global OpenBackupEventLogW "OpenBackupEventLogW" wstr, wstr
; res = OpenBackupEventLogW(lpUNCServerName, lpFileName)
; lpUNCServerName : LPCWSTR optional -> "wstr"
; lpFileName : LPCWSTR -> "wstr"

; HANDLE OpenBackupEventLogW(LPCWSTR lpUNCServerName, LPCWSTR lpFileName)
#uselib "ADVAPI32.dll"
#cfunc global OpenBackupEventLogW "OpenBackupEventLogW" wstr, wstr
; res = OpenBackupEventLogW(lpUNCServerName, lpFileName)
; lpUNCServerName : LPCWSTR optional -> "wstr"
; lpFileName : LPCWSTR -> "wstr"

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

var (
	advapi32 = windows.NewLazySystemDLL("ADVAPI32.dll")
	procOpenBackupEventLogW = advapi32.NewProc("OpenBackupEventLogW")
)

// lpUNCServerName (LPCWSTR optional), lpFileName (LPCWSTR)
r1, _, err := procOpenBackupEventLogW.Call(
	uintptr(unsafe.Pointer(windows.StringToUTF16Ptr(lpUNCServerName))),
	uintptr(unsafe.Pointer(windows.StringToUTF16Ptr(lpFileName))),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // HANDLE

function OpenBackupEventLogW(
  lpUNCServerName: PWideChar;   // LPCWSTR optional
  lpFileName: PWideChar   // LPCWSTR
): THandle; stdcall;
  external 'ADVAPI32.dll' name 'OpenBackupEventLogW';

result := DllCall("ADVAPI32\OpenBackupEventLogW"
    , "WStr", lpUNCServerName   ; LPCWSTR optional
    , "WStr", lpFileName   ; LPCWSTR
    , "Ptr")   ; return: HANDLE

●OpenBackupEventLogW(lpUNCServerName, lpFileName) = DLL("ADVAPI32.dll", "void* OpenBackupEventLogW(char*, char*)")
# 呼び出し: OpenBackupEventLogW(lpUNCServerName, lpFileName)
# lpUNCServerName : LPCWSTR optional -> "char*"
# lpFileName : LPCWSTR -> "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)。
# ※-W(Unicode)関数。なでしこ1はANSIのため -A 版の利用を推奨。