PowerEnumerate

// POWRPROF.dll
#include <windows.h>

WIN32_ERROR PowerEnumerate(
    HKEY RootPowerKey,   // optional
    const GUID* SchemeGuid,   // optional
    const GUID* SubGroupOfPowerSettingsGuid,   // optional
    POWER_DATA_ACCESSOR AccessFlags,
    DWORD Index,
    BYTE* Buffer,   // optional
    DWORD* BufferSize
);

<DllImport("POWRPROF.dll", ExactSpelling:=True)>
Public Shared Function PowerEnumerate(
    RootPowerKey As IntPtr,   ' HKEY optional
    SchemeGuid As IntPtr,   ' GUID* optional
    SubGroupOfPowerSettingsGuid As IntPtr,   ' GUID* optional
    AccessFlags As Integer,   ' POWER_DATA_ACCESSOR
    Index As UInteger,   ' DWORD
    Buffer As IntPtr,   ' BYTE* optional, out
    ByRef BufferSize As UInteger   ' DWORD* in/out
) As UInteger
End Function

' RootPowerKey : HKEY optional
' SchemeGuid : GUID* optional
' SubGroupOfPowerSettingsGuid : GUID* optional
' AccessFlags : POWER_DATA_ACCESSOR
' Index : DWORD
' Buffer : BYTE* optional, out
' BufferSize : DWORD* in/out
Declare PtrSafe Function PowerEnumerate Lib "powrprof" ( _
    ByVal RootPowerKey As LongPtr, _
    ByVal SchemeGuid As LongPtr, _
    ByVal SubGroupOfPowerSettingsGuid As LongPtr, _
    ByVal AccessFlags As Long, _
    ByVal Index As Long, _
    ByVal Buffer As LongPtr, _
    ByRef BufferSize As Long) As Long
' VBA7前提(PtrSafe)。32bit Office では LongPtr→Long。Integer=16bit / Long=32bit / LongLong=64bit。

import ctypes
from ctypes import wintypes

PowerEnumerate = ctypes.windll.powrprof.PowerEnumerate
PowerEnumerate.restype = wintypes.DWORD
PowerEnumerate.argtypes = [
    wintypes.HANDLE,  # RootPowerKey : HKEY optional
    ctypes.c_void_p,  # SchemeGuid : GUID* optional
    ctypes.c_void_p,  # SubGroupOfPowerSettingsGuid : GUID* optional
    ctypes.c_int,  # AccessFlags : POWER_DATA_ACCESSOR
    wintypes.DWORD,  # Index : DWORD
    ctypes.POINTER(ctypes.c_ubyte),  # Buffer : BYTE* optional, out
    ctypes.POINTER(wintypes.DWORD),  # BufferSize : DWORD* in/out
]

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('POWRPROF.dll')
PowerEnumerate = Fiddle::Function.new(
  lib['PowerEnumerate'],
  [
    Fiddle::TYPE_VOIDP,  # RootPowerKey : HKEY optional
    Fiddle::TYPE_VOIDP,  # SchemeGuid : GUID* optional
    Fiddle::TYPE_VOIDP,  # SubGroupOfPowerSettingsGuid : GUID* optional
    Fiddle::TYPE_INT,  # AccessFlags : POWER_DATA_ACCESSOR
    -Fiddle::TYPE_INT,  # Index : DWORD
    Fiddle::TYPE_VOIDP,  # Buffer : BYTE* optional, out
    Fiddle::TYPE_VOIDP,  # BufferSize : DWORD* in/out
  ],
  -Fiddle::TYPE_INT)

#[link(name = "powrprof")]
extern "system" {
    fn PowerEnumerate(
        RootPowerKey: *mut core::ffi::c_void,  // HKEY optional
        SchemeGuid: *const GUID,  // GUID* optional
        SubGroupOfPowerSettingsGuid: *const GUID,  // GUID* optional
        AccessFlags: i32,  // POWER_DATA_ACCESSOR
        Index: u32,  // DWORD
        Buffer: *mut u8,  // BYTE* optional, out
        BufferSize: *mut u32  // DWORD* in/out
    ) -> u32;
}
// crates: windows-sys provides ready-made bindings for this API.

$sig = @"
[DllImport("POWRPROF.dll")]
public static extern uint PowerEnumerate(IntPtr RootPowerKey, IntPtr SchemeGuid, IntPtr SubGroupOfPowerSettingsGuid, int AccessFlags, uint Index, IntPtr Buffer, ref uint BufferSize);
"@
$api = Add-Type -MemberDefinition $sig -Name 'POWRPROF_PowerEnumerate' -Namespace Win32 -PassThru
# $api::PowerEnumerate(RootPowerKey, SchemeGuid, SubGroupOfPowerSettingsGuid, AccessFlags, Index, Buffer, BufferSize)

#uselib "POWRPROF.dll"
#func global PowerEnumerate "PowerEnumerate" sptr, sptr, sptr, sptr, sptr, sptr, sptr
; PowerEnumerate RootPowerKey, varptr(SchemeGuid), varptr(SubGroupOfPowerSettingsGuid), AccessFlags, Index, varptr(Buffer), varptr(BufferSize)   ; 戻り値は stat
; RootPowerKey : HKEY optional -> "sptr"
; SchemeGuid : GUID* optional -> "sptr"
; SubGroupOfPowerSettingsGuid : GUID* optional -> "sptr"
; AccessFlags : POWER_DATA_ACCESSOR -> "sptr"
; Index : DWORD -> "sptr"
; Buffer : BYTE* optional, out -> "sptr"
; BufferSize : DWORD* in/out -> "sptr"
; ※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 (
	powrprof = windows.NewLazySystemDLL("POWRPROF.dll")
	procPowerEnumerate = powrprof.NewProc("PowerEnumerate")
)

// RootPowerKey (HKEY optional), SchemeGuid (GUID* optional), SubGroupOfPowerSettingsGuid (GUID* optional), AccessFlags (POWER_DATA_ACCESSOR), Index (DWORD), Buffer (BYTE* optional, out), BufferSize (DWORD* in/out)
r1, _, err := procPowerEnumerate.Call(
	uintptr(RootPowerKey),
	uintptr(SchemeGuid),
	uintptr(SubGroupOfPowerSettingsGuid),
	uintptr(AccessFlags),
	uintptr(Index),
	uintptr(Buffer),
	uintptr(BufferSize),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // WIN32_ERROR

function PowerEnumerate(
  RootPowerKey: THandle;   // HKEY optional
  SchemeGuid: PGUID;   // GUID* optional
  SubGroupOfPowerSettingsGuid: PGUID;   // GUID* optional
  AccessFlags: Integer;   // POWER_DATA_ACCESSOR
  Index: DWORD;   // DWORD
  Buffer: Pointer;   // BYTE* optional, out
  BufferSize: Pointer   // DWORD* in/out
): DWORD; stdcall;
  external 'POWRPROF.dll' name 'PowerEnumerate';

result := DllCall("POWRPROF\PowerEnumerate"
    , "Ptr", RootPowerKey   ; HKEY optional
    , "Ptr", SchemeGuid   ; GUID* optional
    , "Ptr", SubGroupOfPowerSettingsGuid   ; GUID* optional
    , "Int", AccessFlags   ; POWER_DATA_ACCESSOR
    , "UInt", Index   ; DWORD
    , "Ptr", Buffer   ; BYTE* optional, out
    , "Ptr", BufferSize   ; DWORD* in/out
    , "UInt")   ; return: WIN32_ERROR

●PowerEnumerate(RootPowerKey, SchemeGuid, SubGroupOfPowerSettingsGuid, AccessFlags, Index, Buffer, BufferSize) = DLL("POWRPROF.dll", "dword PowerEnumerate(void*, void*, void*, int, dword, void*, void*)")
# 呼び出し: PowerEnumerate(RootPowerKey, SchemeGuid, SubGroupOfPowerSettingsGuid, AccessFlags, Index, Buffer, BufferSize)
# RootPowerKey : HKEY optional -> "void*"
# SchemeGuid : GUID* optional -> "void*"
# SubGroupOfPowerSettingsGuid : GUID* optional -> "void*"
# AccessFlags : POWER_DATA_ACCESSOR -> "int"
# Index : DWORD -> "dword"
# Buffer : BYTE* optional, out -> "void*"
# BufferSize : DWORD* in/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)。

const std = @import("std");

extern "powrprof" fn PowerEnumerate(
    RootPowerKey: ?*anyopaque, // HKEY optional
    SchemeGuid: [*c]GUID, // GUID* optional
    SubGroupOfPowerSettingsGuid: [*c]GUID, // GUID* optional
    AccessFlags: i32, // POWER_DATA_ACCESSOR
    Index: u32, // DWORD
    Buffer: [*c]u8, // BYTE* optional, out
    BufferSize: [*c]u32 // DWORD* in/out
) callconv(std.os.windows.WINAPI) u32;

proc PowerEnumerate(
    RootPowerKey: pointer,  # HKEY optional
    SchemeGuid: ptr GUID,  # GUID* optional
    SubGroupOfPowerSettingsGuid: ptr GUID,  # GUID* optional
    AccessFlags: int32,  # POWER_DATA_ACCESSOR
    Index: uint32,  # DWORD
    Buffer: ptr uint8,  # BYTE* optional, out
    BufferSize: ptr uint32  # DWORD* in/out
): uint32 {.importc: "PowerEnumerate", stdcall, dynlib: "POWRPROF.dll".}

pragma(lib, "powrprof");
extern(Windows)
uint PowerEnumerate(
    void* RootPowerKey,   // HKEY optional
    GUID* SchemeGuid,   // GUID* optional
    GUID* SubGroupOfPowerSettingsGuid,   // GUID* optional
    int AccessFlags,   // POWER_DATA_ACCESSOR
    uint Index,   // DWORD
    ubyte* Buffer,   // BYTE* optional, out
    uint* BufferSize   // DWORD* in/out
);

ccall((:PowerEnumerate, "POWRPROF.dll"), stdcall, UInt32,
      (Ptr{Cvoid}, Ptr{GUID}, Ptr{GUID}, Int32, UInt32, Ptr{UInt8}, Ptr{UInt32}),
      RootPowerKey, SchemeGuid, SubGroupOfPowerSettingsGuid, AccessFlags, Index, Buffer, BufferSize)
# RootPowerKey : HKEY optional -> Ptr{Cvoid}
# SchemeGuid : GUID* optional -> Ptr{GUID}
# SubGroupOfPowerSettingsGuid : GUID* optional -> Ptr{GUID}
# AccessFlags : POWER_DATA_ACCESSOR -> Int32
# Index : DWORD -> UInt32
# Buffer : BYTE* optional, out -> Ptr{UInt8}
# BufferSize : DWORD* in/out -> Ptr{UInt32}
# stdcall は 32bit のみ意味を持つ(x64 では無視)。

local ffi = require("ffi")
ffi.cdef[[
uint32_t PowerEnumerate(
    void* RootPowerKey,
    void* SchemeGuid,
    void* SubGroupOfPowerSettingsGuid,
    int32_t AccessFlags,
    uint32_t Index,
    uint8_t* Buffer,
    uint32_t* BufferSize);
]]
local powrprof = ffi.load("powrprof")
-- powrprof.PowerEnumerate(RootPowerKey, SchemeGuid, SubGroupOfPowerSettingsGuid, AccessFlags, Index, Buffer, BufferSize)
-- RootPowerKey : HKEY optional
-- SchemeGuid : GUID* optional
-- SubGroupOfPowerSettingsGuid : GUID* optional
-- AccessFlags : POWER_DATA_ACCESSOR
-- Index : DWORD
-- Buffer : BYTE* optional, out
-- BufferSize : DWORD* in/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。

const koffi = require('koffi');
const lib = koffi.load('POWRPROF.dll');
const PowerEnumerate = lib.func('__stdcall', 'PowerEnumerate', 'uint32_t', ['void *', 'void *', 'void *', 'int32_t', 'uint32_t', 'uint8_t *', 'uint32_t *']);
// PowerEnumerate(RootPowerKey, SchemeGuid, SubGroupOfPowerSettingsGuid, AccessFlags, Index, Buffer, BufferSize)
// RootPowerKey : HKEY optional -> 'void *'
// SchemeGuid : GUID* optional -> 'void *'
// SubGroupOfPowerSettingsGuid : GUID* optional -> 'void *'
// AccessFlags : POWER_DATA_ACCESSOR -> 'int32_t'
// Index : DWORD -> 'uint32_t'
// Buffer : BYTE* optional, out -> 'uint8_t *'
// BufferSize : DWORD* in/out -> 'uint32_t *'
// 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("POWRPROF.dll", {
  PowerEnumerate: { parameters: ["pointer", "pointer", "pointer", "i32", "u32", "pointer", "pointer"], result: "u32" },
});
// lib.symbols.PowerEnumerate(RootPowerKey, SchemeGuid, SubGroupOfPowerSettingsGuid, AccessFlags, Index, Buffer, BufferSize)
// RootPowerKey : HKEY optional -> "pointer"
// SchemeGuid : GUID* optional -> "pointer"
// SubGroupOfPowerSettingsGuid : GUID* optional -> "pointer"
// AccessFlags : POWER_DATA_ACCESSOR -> "i32"
// Index : DWORD -> "u32"
// Buffer : BYTE* optional, out -> "pointer"
// BufferSize : DWORD* in/out -> "pointer"
// 文字列引数は "buffer"(NUL 終端のバイト列を Uint8Array で渡す)。
// 値渡し構造体は { struct: [ ...field types... ] } を使用。

<?php
$ffi = FFI::cdef(<<<C
uint32_t PowerEnumerate(
    void* RootPowerKey,
    void* SchemeGuid,
    void* SubGroupOfPowerSettingsGuid,
    int32_t AccessFlags,
    uint32_t Index,
    uint8_t* Buffer,
    uint32_t* BufferSize);
C, "POWRPROF.dll");
// $ffi->PowerEnumerate(RootPowerKey, SchemeGuid, SubGroupOfPowerSettingsGuid, AccessFlags, Index, Buffer, BufferSize);
// RootPowerKey : HKEY optional
// SchemeGuid : GUID* optional
// SubGroupOfPowerSettingsGuid : GUID* optional
// AccessFlags : POWER_DATA_ACCESSOR
// Index : DWORD
// Buffer : BYTE* optional, out
// BufferSize : DWORD* in/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 Powrprof extends StdCallLibrary {
    Powrprof INSTANCE = Native.load("powrprof", Powrprof.class);
    int PowerEnumerate(
        Pointer RootPowerKey,   // HKEY optional
        Pointer SchemeGuid,   // GUID* optional
        Pointer SubGroupOfPowerSettingsGuid,   // GUID* optional
        int AccessFlags,   // POWER_DATA_ACCESSOR
        int Index,   // DWORD
        byte[] Buffer,   // BYTE* optional, out
        IntByReference BufferSize   // DWORD* in/out
    );
}

@[Link("powrprof")]
lib LibPOWRPROF
  fun PowerEnumerate = PowerEnumerate(
    RootPowerKey : Void*,   # HKEY optional
    SchemeGuid : GUID*,   # GUID* optional
    SubGroupOfPowerSettingsGuid : GUID*,   # GUID* optional
    AccessFlags : Int32,   # POWER_DATA_ACCESSOR
    Index : UInt32,   # DWORD
    Buffer : UInt8*,   # BYTE* optional, out
    BufferSize : UInt32*   # DWORD* in/out
  ) : UInt32
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 PowerEnumerateNative = Uint32 Function(Pointer<Void>, Pointer<Void>, Pointer<Void>, Int32, Uint32, Pointer<Uint8>, Pointer<Uint32>);
typedef PowerEnumerateDart = int Function(Pointer<Void>, Pointer<Void>, Pointer<Void>, int, int, Pointer<Uint8>, Pointer<Uint32>);
final PowerEnumerate = DynamicLibrary.open('POWRPROF.dll')
    .lookupFunction<PowerEnumerateNative, PowerEnumerateDart>('PowerEnumerate');
// RootPowerKey : HKEY optional -> Pointer<Void>
// SchemeGuid : GUID* optional -> Pointer<Void>
// SubGroupOfPowerSettingsGuid : GUID* optional -> Pointer<Void>
// AccessFlags : POWER_DATA_ACCESSOR -> Int32
// Index : DWORD -> Uint32
// Buffer : BYTE* optional, out -> Pointer<Uint8>
// BufferSize : DWORD* in/out -> Pointer<Uint32>
// 文字列は package:ffi の "...".toNativeUtf16()/toNativeUtf8() で変換。

{$mode objfpc}{$H+}
function PowerEnumerate(
  RootPowerKey: THandle;   // HKEY optional
  SchemeGuid: PGUID;   // GUID* optional
  SubGroupOfPowerSettingsGuid: PGUID;   // GUID* optional
  AccessFlags: Integer;   // POWER_DATA_ACCESSOR
  Index: DWORD;   // DWORD
  Buffer: Pointer;   // BYTE* optional, out
  BufferSize: Pointer   // DWORD* in/out
): DWORD; stdcall;
  external 'POWRPROF.dll' name 'PowerEnumerate';

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

foreign import stdcall safe "PowerEnumerate"
  c_PowerEnumerate :: Ptr () -> Ptr () -> Ptr () -> Int32 -> Word32 -> Ptr Word8 -> Ptr Word32 -> IO Word32
-- RootPowerKey : HKEY optional -> Ptr ()
-- SchemeGuid : GUID* optional -> Ptr ()
-- SubGroupOfPowerSettingsGuid : GUID* optional -> Ptr ()
-- AccessFlags : POWER_DATA_ACCESSOR -> Int32
-- Index : DWORD -> Word32
-- Buffer : BYTE* optional, out -> Ptr Word8
-- BufferSize : DWORD* in/out -> Ptr Word32
-- 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 powerenumerate =
  foreign "PowerEnumerate"
    ((ptr void) @-> (ptr void) @-> (ptr void) @-> int32_t @-> uint32_t @-> (ptr uint8_t) @-> (ptr uint32_t) @-> returning uint32_t)
(* RootPowerKey : HKEY optional -> (ptr void) *)
(* SchemeGuid : GUID* optional -> (ptr void) *)
(* SubGroupOfPowerSettingsGuid : GUID* optional -> (ptr void) *)
(* AccessFlags : POWER_DATA_ACCESSOR -> int32_t *)
(* Index : DWORD -> uint32_t *)
(* Buffer : BYTE* optional, out -> (ptr uint8_t) *)
(* BufferSize : DWORD* in/out -> (ptr uint32_t) *)
(* 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 powrprof (t "POWRPROF.dll"))
(cffi:use-foreign-library powrprof)

(cffi:defcfun ("PowerEnumerate" power-enumerate :convention :stdcall) :uint32
  (root-power-key :pointer)   ; HKEY optional
  (scheme-guid :pointer)   ; GUID* optional
  (sub-group-of-power-settings-guid :pointer)   ; GUID* optional
  (access-flags :int32)   ; POWER_DATA_ACCESSOR
  (index :uint32)   ; DWORD
  (buffer :pointer)   ; BYTE* optional, out
  (buffer-size :pointer))   ; DWORD* in/out
; isize/usize(INT_PTR/SIZE_T)は x64 前提で :int64/:uint64。x86 では :int32/:uint32。

use Win32::API;
my $PowerEnumerate = Win32::API::More->new('POWRPROF',
    'DWORD PowerEnumerate(HANDLE RootPowerKey, LPVOID SchemeGuid, LPVOID SubGroupOfPowerSettingsGuid, int AccessFlags, DWORD Index, LPVOID Buffer, LPVOID BufferSize)');
# my $ret = $PowerEnumerate->Call($RootPowerKey, $SchemeGuid, $SubGroupOfPowerSettingsGuid, $AccessFlags, $Index, $Buffer, $BufferSize);
# RootPowerKey : HKEY optional -> HANDLE
# SchemeGuid : GUID* optional -> LPVOID
# SubGroupOfPowerSettingsGuid : GUID* optional -> LPVOID
# AccessFlags : POWER_DATA_ACCESSOR -> int
# Index : DWORD -> DWORD
# Buffer : BYTE* optional, out -> LPVOID
# BufferSize : DWORD* in/out -> LPVOID
# 値渡し構造体は pack() した文字列、または Win32::API::Struct を使用。