SetupOpenInfFileW

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

void* SetupOpenInfFileW(
    LPCWSTR FileName,
    LPCWSTR InfClass,   // optional
    INF_STYLE InfStyle,
    DWORD* ErrorLine   // optional
);

<DllImport("SETUPAPI.dll", CharSet:=CharSet.Unicode, SetLastError:=True, ExactSpelling:=True)>
Public Shared Function SetupOpenInfFileW(
    <MarshalAs(UnmanagedType.LPWStr)> FileName As String,   ' LPCWSTR
    <MarshalAs(UnmanagedType.LPWStr)> InfClass As String,   ' LPCWSTR optional
    InfStyle As UInteger,   ' INF_STYLE
    ErrorLine As IntPtr   ' DWORD* optional, out
) As IntPtr
End Function

' FileName : LPCWSTR
' InfClass : LPCWSTR optional
' InfStyle : INF_STYLE
' ErrorLine : DWORD* optional, out
Declare PtrSafe Function SetupOpenInfFileW Lib "setupapi" ( _
    ByVal FileName As LongPtr, _
    ByVal InfClass As LongPtr, _
    ByVal InfStyle As Long, _
    ByVal ErrorLine 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

SetupOpenInfFileW = ctypes.windll.setupapi.SetupOpenInfFileW
SetupOpenInfFileW.restype = ctypes.c_void_p
SetupOpenInfFileW.argtypes = [
    wintypes.LPCWSTR,  # FileName : LPCWSTR
    wintypes.LPCWSTR,  # InfClass : LPCWSTR optional
    wintypes.DWORD,  # InfStyle : INF_STYLE
    ctypes.POINTER(wintypes.DWORD),  # ErrorLine : DWORD* optional, out
]
# GetLastError: use ctypes.GetLastError() (or ctypes.WinDLL(use_last_error=True))

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('SETUPAPI.dll')
SetupOpenInfFileW = Fiddle::Function.new(
  lib['SetupOpenInfFileW'],
  [
    Fiddle::TYPE_VOIDP,  # FileName : LPCWSTR
    Fiddle::TYPE_VOIDP,  # InfClass : LPCWSTR optional
    -Fiddle::TYPE_INT,  # InfStyle : INF_STYLE
    Fiddle::TYPE_VOIDP,  # ErrorLine : DWORD* optional, out
  ],
  Fiddle::TYPE_VOIDP)
# Wide strings: pass str.encode("UTF-16LE") + "\x00\x00"

#[link(name = "setupapi")]
extern "system" {
    fn SetupOpenInfFileW(
        FileName: *const u16,  // LPCWSTR
        InfClass: *const u16,  // LPCWSTR optional
        InfStyle: u32,  // INF_STYLE
        ErrorLine: *mut u32  // DWORD* optional, out
    ) -> *mut ();
}
// crates: windows-sys provides ready-made bindings for this API.

$sig = @"
[DllImport("SETUPAPI.dll", CharSet = CharSet.Unicode, SetLastError = true)]
public static extern IntPtr SetupOpenInfFileW([MarshalAs(UnmanagedType.LPWStr)] string FileName, [MarshalAs(UnmanagedType.LPWStr)] string InfClass, uint InfStyle, IntPtr ErrorLine);
"@
$api = Add-Type -MemberDefinition $sig -Name 'SETUPAPI_SetupOpenInfFileW' -Namespace Win32 -PassThru
# $api::SetupOpenInfFileW(FileName, InfClass, InfStyle, ErrorLine)

#uselib "SETUPAPI.dll"
#func global SetupOpenInfFileW "SetupOpenInfFileW" wptr, wptr, wptr, wptr
; SetupOpenInfFileW FileName, InfClass, InfStyle, varptr(ErrorLine)   ; 戻り値は stat
; FileName : LPCWSTR -> "wptr"
; InfClass : LPCWSTR optional -> "wptr"
; InfStyle : INF_STYLE -> "wptr"
; ErrorLine : DWORD* optional, out -> "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 "SETUPAPI.dll"
#cfunc global SetupOpenInfFileW "SetupOpenInfFileW" wstr, wstr, int, var
; res = SetupOpenInfFileW(FileName, InfClass, InfStyle, ErrorLine)
; FileName : LPCWSTR -> "wstr"
; InfClass : LPCWSTR optional -> "wstr"
; InfStyle : INF_STYLE -> "int"
; ErrorLine : DWORD* optional, 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。

; void* SetupOpenInfFileW(LPCWSTR FileName, LPCWSTR InfClass, INF_STYLE InfStyle, DWORD* ErrorLine)
#uselib "SETUPAPI.dll"
#cfunc global SetupOpenInfFileW "SetupOpenInfFileW" wstr, wstr, int, var
; res = SetupOpenInfFileW(FileName, InfClass, InfStyle, ErrorLine)
; FileName : LPCWSTR -> "wstr"
; InfClass : LPCWSTR optional -> "wstr"
; InfStyle : INF_STYLE -> "int"
; ErrorLine : DWORD* optional, 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 (
	setupapi = windows.NewLazySystemDLL("SETUPAPI.dll")
	procSetupOpenInfFileW = setupapi.NewProc("SetupOpenInfFileW")
)

// FileName (LPCWSTR), InfClass (LPCWSTR optional), InfStyle (INF_STYLE), ErrorLine (DWORD* optional, out)
r1, _, err := procSetupOpenInfFileW.Call(
	uintptr(unsafe.Pointer(windows.StringToUTF16Ptr(FileName))),
	uintptr(unsafe.Pointer(windows.StringToUTF16Ptr(InfClass))),
	uintptr(InfStyle),
	uintptr(ErrorLine),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // void*

function SetupOpenInfFileW(
  FileName: PWideChar;   // LPCWSTR
  InfClass: PWideChar;   // LPCWSTR optional
  InfStyle: DWORD;   // INF_STYLE
  ErrorLine: Pointer   // DWORD* optional, out
): Pointer; stdcall;
  external 'SETUPAPI.dll' name 'SetupOpenInfFileW';

result := DllCall("SETUPAPI\SetupOpenInfFileW"
    , "WStr", FileName   ; LPCWSTR
    , "WStr", InfClass   ; LPCWSTR optional
    , "UInt", InfStyle   ; INF_STYLE
    , "Ptr", ErrorLine   ; DWORD* optional, out
    , "Ptr")   ; return: void*

●SetupOpenInfFileW(FileName, InfClass, InfStyle, ErrorLine) = DLL("SETUPAPI.dll", "void* SetupOpenInfFileW(char*, char*, dword, void*)")
# 呼び出し: SetupOpenInfFileW(FileName, InfClass, InfStyle, ErrorLine)
# FileName : LPCWSTR -> "char*"
# InfClass : LPCWSTR optional -> "char*"
# InfStyle : INF_STYLE -> "dword"
# ErrorLine : DWORD* optional, 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)。
# ※-W(Unicode)関数。なでしこ1はANSIのため -A 版の利用を推奨。