LZOpenFileW

// KERNEL32.dll  (Unicode / -W)
#include <windows.h>

INT LZOpenFileW(
    LPWSTR lpFileName,
    OFSTRUCT* lpReOpenBuf,
    LZOPENFILE_STYLE wStyle
);

<DllImport("KERNEL32.dll", CharSet:=CharSet.Unicode, ExactSpelling:=True)>
Public Shared Function LZOpenFileW(
    <MarshalAs(UnmanagedType.LPWStr)> lpFileName As String,   ' LPWSTR
    lpReOpenBuf As IntPtr,   ' OFSTRUCT* in/out
    wStyle As UShort   ' LZOPENFILE_STYLE
) As Integer
End Function

' lpFileName : LPWSTR
' lpReOpenBuf : OFSTRUCT* in/out
' wStyle : LZOPENFILE_STYLE
Declare PtrSafe Function LZOpenFileW Lib "kernel32" ( _
    ByVal lpFileName As LongPtr, _
    ByVal lpReOpenBuf As LongPtr, _
    ByVal wStyle As Integer) As Long
' 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

LZOpenFileW = ctypes.windll.kernel32.LZOpenFileW
LZOpenFileW.restype = ctypes.c_int
LZOpenFileW.argtypes = [
    wintypes.LPCWSTR,  # lpFileName : LPWSTR
    ctypes.c_void_p,  # lpReOpenBuf : OFSTRUCT* in/out
    ctypes.c_ushort,  # wStyle : LZOPENFILE_STYLE
]

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('KERNEL32.dll')
LZOpenFileW = Fiddle::Function.new(
  lib['LZOpenFileW'],
  [
    Fiddle::TYPE_VOIDP,  # lpFileName : LPWSTR
    Fiddle::TYPE_VOIDP,  # lpReOpenBuf : OFSTRUCT* in/out
    -Fiddle::TYPE_SHORT,  # wStyle : LZOPENFILE_STYLE
  ],
  Fiddle::TYPE_INT)
# Wide strings: pass str.encode("UTF-16LE") + "\x00\x00"

#[link(name = "kernel32")]
extern "system" {
    fn LZOpenFileW(
        lpFileName: *mut u16,  // LPWSTR
        lpReOpenBuf: *mut OFSTRUCT,  // OFSTRUCT* in/out
        wStyle: u16  // LZOPENFILE_STYLE
    ) -> i32;
}
// crates: windows-sys provides ready-made bindings for this API.

$sig = @"
[DllImport("KERNEL32.dll", CharSet = CharSet.Unicode)]
public static extern int LZOpenFileW([MarshalAs(UnmanagedType.LPWStr)] string lpFileName, IntPtr lpReOpenBuf, ushort wStyle);
"@
$api = Add-Type -MemberDefinition $sig -Name 'KERNEL32_LZOpenFileW' -Namespace Win32 -PassThru
# $api::LZOpenFileW(lpFileName, lpReOpenBuf, wStyle)

#uselib "KERNEL32.dll"
#func global LZOpenFileW "LZOpenFileW" wptr, wptr, wptr
; LZOpenFileW lpFileName, varptr(lpReOpenBuf), wStyle   ; 戻り値は stat
; lpFileName : LPWSTR -> "wptr"
; lpReOpenBuf : OFSTRUCT* in/out -> "wptr"
; wStyle : LZOPENFILE_STYLE -> "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 "KERNEL32.dll"
#cfunc global LZOpenFileW "LZOpenFileW" wstr, var, int
; res = LZOpenFileW(lpFileName, lpReOpenBuf, wStyle)
; lpFileName : LPWSTR -> "wstr"
; lpReOpenBuf : OFSTRUCT* in/out -> "var"
; wStyle : LZOPENFILE_STYLE -> "int"
; ※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。

; INT LZOpenFileW(LPWSTR lpFileName, OFSTRUCT* lpReOpenBuf, LZOPENFILE_STYLE wStyle)
#uselib "KERNEL32.dll"
#cfunc global LZOpenFileW "LZOpenFileW" wstr, var, int
; res = LZOpenFileW(lpFileName, lpReOpenBuf, wStyle)
; lpFileName : LPWSTR -> "wstr"
; lpReOpenBuf : OFSTRUCT* in/out -> "var"
; wStyle : LZOPENFILE_STYLE -> "int"
; ※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 (
	kernel32 = windows.NewLazySystemDLL("KERNEL32.dll")
	procLZOpenFileW = kernel32.NewProc("LZOpenFileW")
)

// lpFileName (LPWSTR), lpReOpenBuf (OFSTRUCT* in/out), wStyle (LZOPENFILE_STYLE)
r1, _, err := procLZOpenFileW.Call(
	uintptr(unsafe.Pointer(windows.StringToUTF16Ptr(lpFileName))),
	uintptr(lpReOpenBuf),
	uintptr(wStyle),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // INT

function LZOpenFileW(
  lpFileName: PWideChar;   // LPWSTR
  lpReOpenBuf: Pointer;   // OFSTRUCT* in/out
  wStyle: Word   // LZOPENFILE_STYLE
): Integer; stdcall;
  external 'KERNEL32.dll' name 'LZOpenFileW';

result := DllCall("KERNEL32\LZOpenFileW"
    , "WStr", lpFileName   ; LPWSTR
    , "Ptr", lpReOpenBuf   ; OFSTRUCT* in/out
    , "UShort", wStyle   ; LZOPENFILE_STYLE
    , "Int")   ; return: INT

●LZOpenFileW(lpFileName, lpReOpenBuf, wStyle) = DLL("KERNEL32.dll", "int LZOpenFileW(char*, void*, int)")
# 呼び出し: LZOpenFileW(lpFileName, lpReOpenBuf, wStyle)
# lpFileName : LPWSTR -> "char*"
# lpReOpenBuf : OFSTRUCT* in/out -> "void*"
# wStyle : LZOPENFILE_STYLE -> "int"
# 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。