SetupFindFirstLineW

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

BOOL SetupFindFirstLineW(
    void* InfHandle,
    LPCWSTR Section,
    LPCWSTR Key,   // optional
    INFCONTEXT* Context
);

<DllImport("SETUPAPI.dll", CharSet:=CharSet.Unicode, SetLastError:=True, ExactSpelling:=True)>
Public Shared Function SetupFindFirstLineW(
    InfHandle As IntPtr,   ' void*
    <MarshalAs(UnmanagedType.LPWStr)> Section As String,   ' LPCWSTR
    <MarshalAs(UnmanagedType.LPWStr)> Key As String,   ' LPCWSTR optional
    Context As IntPtr   ' INFCONTEXT* out
) As <MarshalAs(UnmanagedType.Bool)> Boolean
End Function

' InfHandle : void*
' Section : LPCWSTR
' Key : LPCWSTR optional
' Context : INFCONTEXT* out
Declare PtrSafe Function SetupFindFirstLineW Lib "setupapi" ( _
    ByVal InfHandle As LongPtr, _
    ByVal Section As LongPtr, _
    ByVal Key As LongPtr, _
    ByVal Context As LongPtr) 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

SetupFindFirstLineW = ctypes.windll.setupapi.SetupFindFirstLineW
SetupFindFirstLineW.restype = wintypes.BOOL
SetupFindFirstLineW.argtypes = [
    ctypes.POINTER(None),  # InfHandle : void*
    wintypes.LPCWSTR,  # Section : LPCWSTR
    wintypes.LPCWSTR,  # Key : LPCWSTR optional
    ctypes.c_void_p,  # Context : INFCONTEXT* out
]
# GetLastError: use ctypes.GetLastError() (or ctypes.WinDLL(use_last_error=True))

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('SETUPAPI.dll')
SetupFindFirstLineW = Fiddle::Function.new(
  lib['SetupFindFirstLineW'],
  [
    Fiddle::TYPE_VOIDP,  # InfHandle : void*
    Fiddle::TYPE_VOIDP,  # Section : LPCWSTR
    Fiddle::TYPE_VOIDP,  # Key : LPCWSTR optional
    Fiddle::TYPE_VOIDP,  # Context : INFCONTEXT* out
  ],
  Fiddle::TYPE_INT)
# Wide strings: pass str.encode("UTF-16LE") + "\x00\x00"

#[link(name = "setupapi")]
extern "system" {
    fn SetupFindFirstLineW(
        InfHandle: *mut (),  // void*
        Section: *const u16,  // LPCWSTR
        Key: *const u16,  // LPCWSTR optional
        Context: *mut INFCONTEXT  // INFCONTEXT* out
    ) -> i32;
}
// crates: windows-sys provides ready-made bindings for this API.

$sig = @"
[return: MarshalAs(UnmanagedType.Bool)]
[DllImport("SETUPAPI.dll", CharSet = CharSet.Unicode, SetLastError = true)]
public static extern bool SetupFindFirstLineW(IntPtr InfHandle, [MarshalAs(UnmanagedType.LPWStr)] string Section, [MarshalAs(UnmanagedType.LPWStr)] string Key, IntPtr Context);
"@
$api = Add-Type -MemberDefinition $sig -Name 'SETUPAPI_SetupFindFirstLineW' -Namespace Win32 -PassThru
# $api::SetupFindFirstLineW(InfHandle, Section, Key, Context)

#uselib "SETUPAPI.dll"
#func global SetupFindFirstLineW "SetupFindFirstLineW" wptr, wptr, wptr, wptr
; SetupFindFirstLineW InfHandle, Section, Key, varptr(Context)   ; 戻り値は stat
; InfHandle : void* -> "wptr"
; Section : LPCWSTR -> "wptr"
; Key : LPCWSTR optional -> "wptr"
; Context : INFCONTEXT* 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。

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

var (
	setupapi = windows.NewLazySystemDLL("SETUPAPI.dll")
	procSetupFindFirstLineW = setupapi.NewProc("SetupFindFirstLineW")
)

// InfHandle (void*), Section (LPCWSTR), Key (LPCWSTR optional), Context (INFCONTEXT* out)
r1, _, err := procSetupFindFirstLineW.Call(
	uintptr(InfHandle),
	uintptr(unsafe.Pointer(windows.StringToUTF16Ptr(Section))),
	uintptr(unsafe.Pointer(windows.StringToUTF16Ptr(Key))),
	uintptr(Context),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // BOOL

function SetupFindFirstLineW(
  InfHandle: Pointer;   // void*
  Section: PWideChar;   // LPCWSTR
  Key: PWideChar;   // LPCWSTR optional
  Context: Pointer   // INFCONTEXT* out
): BOOL; stdcall;
  external 'SETUPAPI.dll' name 'SetupFindFirstLineW';

result := DllCall("SETUPAPI\SetupFindFirstLineW"
    , "Ptr", InfHandle   ; void*
    , "WStr", Section   ; LPCWSTR
    , "WStr", Key   ; LPCWSTR optional
    , "Ptr", Context   ; INFCONTEXT* out
    , "Int")   ; return: BOOL

●SetupFindFirstLineW(InfHandle, Section, Key, Context) = DLL("SETUPAPI.dll", "bool SetupFindFirstLineW(void*, char*, char*, void*)")
# 呼び出し: SetupFindFirstLineW(InfHandle, Section, Key, Context)
# InfHandle : void* -> "void*"
# Section : LPCWSTR -> "char*"
# Key : LPCWSTR optional -> "char*"
# Context : INFCONTEXT* 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。

const std = @import("std");

extern "setupapi" fn SetupFindFirstLineW(
    InfHandle: ?*anyopaque, // void*
    Section: [*c]const u16, // LPCWSTR
    Key: [*c]const u16, // LPCWSTR optional
    Context: [*c]INFCONTEXT // INFCONTEXT* out
) callconv(std.os.windows.WINAPI) i32;
// Unicode(-W): UTF-16LE のヌル終端バッファ([*c]const u16)を渡す。

proc SetupFindFirstLineW(
    InfHandle: pointer,  # void*
    Section: WideCString,  # LPCWSTR
    Key: WideCString,  # LPCWSTR optional
    Context: ptr INFCONTEXT  # INFCONTEXT* out
): int32 {.importc: "SetupFindFirstLineW", stdcall, dynlib: "SETUPAPI.dll".}
# Unicode(-W): WideCString は newWideCString("...") で生成。

pragma(lib, "setupapi");
extern(Windows)
int SetupFindFirstLineW(
    void* InfHandle,   // void*
    const(wchar)* Section,   // LPCWSTR
    const(wchar)* Key,   // LPCWSTR optional
    INFCONTEXT* Context   // INFCONTEXT* out
);

ccall((:SetupFindFirstLineW, "SETUPAPI.dll"), stdcall, Int32,
      (Ptr{Cvoid}, Cwstring, Cwstring, Ptr{INFCONTEXT}),
      InfHandle, Section, Key, Context)
# InfHandle : void* -> Ptr{Cvoid}
# Section : LPCWSTR -> Cwstring
# Key : LPCWSTR optional -> Cwstring
# Context : INFCONTEXT* out -> Ptr{INFCONTEXT}
# stdcall は 32bit のみ意味を持つ(x64 では無視)。
# Unicode(-W): Cwstring には transcode(UInt16, "...") 等で UTF-16 を渡す。

local ffi = require("ffi")
ffi.cdef[[
int32_t SetupFindFirstLineW(
    void* InfHandle,
    const uint16_t* Section,
    const uint16_t* Key,
    void* Context);
]]
local setupapi = ffi.load("setupapi")
-- setupapi.SetupFindFirstLineW(InfHandle, Section, Key, Context)
-- InfHandle : void*
-- Section : LPCWSTR
-- Key : LPCWSTR optional
-- Context : INFCONTEXT* out
-- 構造体/GUIDへのポインタは cdef が通るよう void* で表記(実型は各引数コメント参照)。値渡し構造体・enum は対応する typedef を cdef に追加すること。
-- Unicode(-W): uint16_t* には UTF-16LE のバッファ(ffi.new("uint16_t[?]", ...))を渡す。

const koffi = require('koffi');
const lib = koffi.load('SETUPAPI.dll');
const SetupFindFirstLineW = lib.func('__stdcall', 'SetupFindFirstLineW', 'int32_t', ['void *', 'str16', 'str16', 'void *']);
// SetupFindFirstLineW(InfHandle, Section, Key, Context)
// InfHandle : void* -> 'void *'
// Section : LPCWSTR -> 'str16'
// Key : LPCWSTR optional -> 'str16'
// Context : INFCONTEXT* out -> 'void *'
// 出力ポインタは koffi.out(...) で包む。構造体は koffi.struct で定義。

const lib = Deno.dlopen("SETUPAPI.dll", {
  SetupFindFirstLineW: { parameters: ["pointer", "buffer", "buffer", "pointer"], result: "i32" },
});
// lib.symbols.SetupFindFirstLineW(InfHandle, Section, Key, Context)
// InfHandle : void* -> "pointer"
// Section : LPCWSTR -> "buffer"
// Key : LPCWSTR optional -> "buffer"
// Context : INFCONTEXT* out -> "pointer"
// 文字列は "buffer"。Unicode(-W) は new TextEncoder() ではなく UTF-16LE のバイト列(末尾に \x00\x00)を Uint8Array で渡す。
// 値渡し構造体は { struct: [ ...field types... ] } を使用。

<?php
$ffi = FFI::cdef(<<<C
int32_t SetupFindFirstLineW(
    void* InfHandle,
    const uint16_t* Section,
    const uint16_t* Key,
    void* Context);
C, "SETUPAPI.dll");
// $ffi->SetupFindFirstLineW(InfHandle, Section, Key, Context);
// InfHandle : void*
// Section : LPCWSTR
// Key : LPCWSTR optional
// Context : INFCONTEXT* out
// 構造体/GUIDへのポインタは cdef が通るよう void* で表記(実型は各引数コメント参照)。値渡し構造体・enum は対応する typedef を cdef に追加すること。
// WINAPI(stdcall): x64 では呼出規約が統一されるため問題なし。x86 では __stdcall 対応のラッパが必要な場合あり。

import com.sun.jna.*;
import com.sun.jna.ptr.*;
import com.sun.jna.win32.StdCallLibrary;
import com.sun.jna.win32.W32APIOptions;

public interface Setupapi extends StdCallLibrary {
    Setupapi INSTANCE = Native.load("setupapi", Setupapi.class, W32APIOptions.UNICODE_OPTIONS);
    boolean SetupFindFirstLineW(
        Pointer InfHandle,   // void*
        WString Section,   // LPCWSTR
        WString Key,   // LPCWSTR optional
        Pointer Context   // INFCONTEXT* out
    );
}
// Unicode(-W): WString(入力)/char[](出力)で UTF-16 をマーシャリング。

@[Link("setupapi")]
lib LibSETUPAPI
  fun SetupFindFirstLineW = SetupFindFirstLineW(
    InfHandle : Void*,   # void*
    Section : UInt16*,   # LPCWSTR
    Key : UInt16*,   # LPCWSTR optional
    Context : INFCONTEXT*   # INFCONTEXT* out
  ) : Int32
end
# 構造体/GUID/enum は lib 内に対応する型定義が必要。
# 呼出規約: x64 は規約統一のため OK。x86(32bit)は WINAPI=stdcall だが Crystal の fun に stdcall 付与構文がなく非対応。

import 'dart:ffi';
import 'package:ffi/ffi.dart';

typedef SetupFindFirstLineWNative = Int32 Function(Pointer<Void>, Pointer<Utf16>, Pointer<Utf16>, Pointer<Void>);
typedef SetupFindFirstLineWDart = int Function(Pointer<Void>, Pointer<Utf16>, Pointer<Utf16>, Pointer<Void>);
final SetupFindFirstLineW = DynamicLibrary.open('SETUPAPI.dll')
    .lookupFunction<SetupFindFirstLineWNative, SetupFindFirstLineWDart>('SetupFindFirstLineW');
// InfHandle : void* -> Pointer<Void>
// Section : LPCWSTR -> Pointer<Utf16>
// Key : LPCWSTR optional -> Pointer<Utf16>
// Context : INFCONTEXT* out -> Pointer<Void>
// 文字列は package:ffi の "...".toNativeUtf16()/toNativeUtf8() で変換。

{$mode objfpc}{$H+}
function SetupFindFirstLineW(
  InfHandle: Pointer;   // void*
  Section: PWideChar;   // LPCWSTR
  Key: PWideChar;   // LPCWSTR optional
  Context: Pointer   // INFCONTEXT* out
): BOOL; stdcall;
  external 'SETUPAPI.dll' name 'SetupFindFirstLineW';

import Foreign
import Foreign.C.Types
import Foreign.C.String

foreign import stdcall safe "SetupFindFirstLineW"
  c_SetupFindFirstLineW :: Ptr () -> CWString -> CWString -> Ptr () -> IO CInt
-- InfHandle : void* -> Ptr ()
-- Section : LPCWSTR -> CWString
-- Key : LPCWSTR optional -> CWString
-- Context : INFCONTEXT* out -> Ptr ()
-- 要 GHC(Windows)。stdcall は x64 では ccall として扱われる。ブロックする API は safe 呼び出し推奨。

open Ctypes
open Foreign

let setupfindfirstlinew =
  foreign "SetupFindFirstLineW"
    ((ptr void) @-> (ptr uint16_t) @-> (ptr uint16_t) @-> (ptr void) @-> returning int32_t)
(* InfHandle : void* -> (ptr void) *)
(* Section : LPCWSTR -> (ptr uint16_t) *)
(* Key : LPCWSTR optional -> (ptr uint16_t) *)
(* Context : INFCONTEXT* out -> (ptr void) *)
(* foreign は cdecl 前提。x64 Windows では WINAPI と一致。構造体は ctypes structure を定義のこと。 *)

(cffi:define-foreign-library setupapi (t "SETUPAPI.dll"))
(cffi:use-foreign-library setupapi)

(cffi:defcfun ("SetupFindFirstLineW" setup-find-first-line-w :convention :stdcall) :int32
  (inf-handle :pointer)   ; void*
  (section (:string :encoding :utf-16le))   ; LPCWSTR
  (key (:string :encoding :utf-16le))   ; LPCWSTR optional
  (context :pointer))   ; INFCONTEXT* out
; isize/usize(INT_PTR/SIZE_T)は x64 前提で :int64/:uint64。x86 では :int32/:uint32。

use Win32::API;
my $SetupFindFirstLineW = Win32::API::More->new('SETUPAPI',
    'BOOL SetupFindFirstLineW(LPVOID InfHandle, LPCWSTR Section, LPCWSTR Key, LPVOID Context)');
# my $ret = $SetupFindFirstLineW->Call($InfHandle, $Section, $Key, $Context);
# InfHandle : void* -> LPVOID
# Section : LPCWSTR -> LPCWSTR
# Key : LPCWSTR optional -> LPCWSTR
# Context : INFCONTEXT* out -> LPVOID
# 値渡し構造体は pack() した文字列、または Win32::API::Struct を使用。
# Unicode(-W): LPCWSTR/LPWSTR は Win32::API が UTF-16 変換を行う。