GetCurrentPowerPolicies

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

BOOLEAN GetCurrentPowerPolicies(
    GLOBAL_POWER_POLICY* pGlobalPowerPolicy,
    POWER_POLICY* pPowerPolicy
);

<DllImport("POWRPROF.dll", SetLastError:=True, ExactSpelling:=True)>
Public Shared Function GetCurrentPowerPolicies(
    pGlobalPowerPolicy As IntPtr,   ' GLOBAL_POWER_POLICY* out
    pPowerPolicy As IntPtr   ' POWER_POLICY* out
) As <MarshalAs(UnmanagedType.U1)> Boolean
End Function

' pGlobalPowerPolicy : GLOBAL_POWER_POLICY* out
' pPowerPolicy : POWER_POLICY* out
Declare PtrSafe Function GetCurrentPowerPolicies Lib "powrprof" ( _
    ByVal pGlobalPowerPolicy As LongPtr, _
    ByVal pPowerPolicy As LongPtr) As Byte
' VBA7前提(PtrSafe)。32bit Office では LongPtr→Long。Integer=16bit / Long=32bit / LongLong=64bit。

import ctypes
from ctypes import wintypes

GetCurrentPowerPolicies = ctypes.windll.powrprof.GetCurrentPowerPolicies
GetCurrentPowerPolicies.restype = wintypes.BOOLEAN
GetCurrentPowerPolicies.argtypes = [
    ctypes.c_void_p,  # pGlobalPowerPolicy : GLOBAL_POWER_POLICY* out
    ctypes.c_void_p,  # pPowerPolicy : POWER_POLICY* out
]
# GetLastError: use ctypes.GetLastError() (or ctypes.WinDLL(use_last_error=True))

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('POWRPROF.dll')
GetCurrentPowerPolicies = Fiddle::Function.new(
  lib['GetCurrentPowerPolicies'],
  [
    Fiddle::TYPE_VOIDP,  # pGlobalPowerPolicy : GLOBAL_POWER_POLICY* out
    Fiddle::TYPE_VOIDP,  # pPowerPolicy : POWER_POLICY* out
  ],
  Fiddle::TYPE_CHAR)

#[link(name = "powrprof")]
extern "system" {
    fn GetCurrentPowerPolicies(
        pGlobalPowerPolicy: *mut GLOBAL_POWER_POLICY,  // GLOBAL_POWER_POLICY* out
        pPowerPolicy: *mut POWER_POLICY  // POWER_POLICY* out
    ) -> u8;
}
// crates: windows-sys provides ready-made bindings for this API.

$sig = @"
[return: MarshalAs(UnmanagedType.U1)]
[DllImport("POWRPROF.dll", SetLastError = true)]
public static extern bool GetCurrentPowerPolicies(IntPtr pGlobalPowerPolicy, IntPtr pPowerPolicy);
"@
$api = Add-Type -MemberDefinition $sig -Name 'POWRPROF_GetCurrentPowerPolicies' -Namespace Win32 -PassThru
# $api::GetCurrentPowerPolicies(pGlobalPowerPolicy, pPowerPolicy)

#uselib "POWRPROF.dll"
#func global GetCurrentPowerPolicies "GetCurrentPowerPolicies" sptr, sptr
; GetCurrentPowerPolicies varptr(pGlobalPowerPolicy), varptr(pPowerPolicy)   ; 戻り値は stat
; pGlobalPowerPolicy : GLOBAL_POWER_POLICY* out -> "sptr"
; pPowerPolicy : POWER_POLICY* 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")
	procGetCurrentPowerPolicies = powrprof.NewProc("GetCurrentPowerPolicies")
)

// pGlobalPowerPolicy (GLOBAL_POWER_POLICY* out), pPowerPolicy (POWER_POLICY* out)
r1, _, err := procGetCurrentPowerPolicies.Call(
	uintptr(pGlobalPowerPolicy),
	uintptr(pPowerPolicy),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // BOOLEAN

function GetCurrentPowerPolicies(
  pGlobalPowerPolicy: Pointer;   // GLOBAL_POWER_POLICY* out
  pPowerPolicy: Pointer   // POWER_POLICY* out
): ByteBool; stdcall;
  external 'POWRPROF.dll' name 'GetCurrentPowerPolicies';

result := DllCall("POWRPROF\GetCurrentPowerPolicies"
    , "Ptr", pGlobalPowerPolicy   ; GLOBAL_POWER_POLICY* out
    , "Ptr", pPowerPolicy   ; POWER_POLICY* out
    , "Char")   ; return: BOOLEAN

●GetCurrentPowerPolicies(pGlobalPowerPolicy, pPowerPolicy) = DLL("POWRPROF.dll", "byte GetCurrentPowerPolicies(void*, void*)")
# 呼び出し: GetCurrentPowerPolicies(pGlobalPowerPolicy, pPowerPolicy)
# pGlobalPowerPolicy : GLOBAL_POWER_POLICY* out -> "void*"
# pPowerPolicy : POWER_POLICY* 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 GetCurrentPowerPolicies(
    pGlobalPowerPolicy: [*c]GLOBAL_POWER_POLICY, // GLOBAL_POWER_POLICY* out
    pPowerPolicy: [*c]POWER_POLICY // POWER_POLICY* out
) callconv(std.os.windows.WINAPI) u8;

proc GetCurrentPowerPolicies(
    pGlobalPowerPolicy: ptr GLOBAL_POWER_POLICY,  # GLOBAL_POWER_POLICY* out
    pPowerPolicy: ptr POWER_POLICY  # POWER_POLICY* out
): uint8 {.importc: "GetCurrentPowerPolicies", stdcall, dynlib: "POWRPROF.dll".}

pragma(lib, "powrprof");
extern(Windows)
ubyte GetCurrentPowerPolicies(
    GLOBAL_POWER_POLICY* pGlobalPowerPolicy,   // GLOBAL_POWER_POLICY* out
    POWER_POLICY* pPowerPolicy   // POWER_POLICY* out
);

ccall((:GetCurrentPowerPolicies, "POWRPROF.dll"), stdcall, UInt8,
      (Ptr{GLOBAL_POWER_POLICY}, Ptr{POWER_POLICY}),
      pGlobalPowerPolicy, pPowerPolicy)
# pGlobalPowerPolicy : GLOBAL_POWER_POLICY* out -> Ptr{GLOBAL_POWER_POLICY}
# pPowerPolicy : POWER_POLICY* out -> Ptr{POWER_POLICY}
# stdcall は 32bit のみ意味を持つ(x64 では無視)。

local ffi = require("ffi")
ffi.cdef[[
uint8_t GetCurrentPowerPolicies(
    void* pGlobalPowerPolicy,
    void* pPowerPolicy);
]]
local powrprof = ffi.load("powrprof")
-- powrprof.GetCurrentPowerPolicies(pGlobalPowerPolicy, pPowerPolicy)
-- pGlobalPowerPolicy : GLOBAL_POWER_POLICY* out
-- pPowerPolicy : POWER_POLICY* 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 GetCurrentPowerPolicies = lib.func('__stdcall', 'GetCurrentPowerPolicies', 'uint8_t', ['void *', 'void *']);
// GetCurrentPowerPolicies(pGlobalPowerPolicy, pPowerPolicy)
// pGlobalPowerPolicy : GLOBAL_POWER_POLICY* out -> 'void *'
// pPowerPolicy : POWER_POLICY* 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("POWRPROF.dll", {
  GetCurrentPowerPolicies: { parameters: ["pointer", "pointer"], result: "u8" },
});
// lib.symbols.GetCurrentPowerPolicies(pGlobalPowerPolicy, pPowerPolicy)
// pGlobalPowerPolicy : GLOBAL_POWER_POLICY* out -> "pointer"
// pPowerPolicy : POWER_POLICY* 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
uint8_t GetCurrentPowerPolicies(
    void* pGlobalPowerPolicy,
    void* pPowerPolicy);
C, "POWRPROF.dll");
// $ffi->GetCurrentPowerPolicies(pGlobalPowerPolicy, pPowerPolicy);
// pGlobalPowerPolicy : GLOBAL_POWER_POLICY* out
// pPowerPolicy : POWER_POLICY* 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);
    byte GetCurrentPowerPolicies(
        Pointer pGlobalPowerPolicy,   // GLOBAL_POWER_POLICY* out
        Pointer pPowerPolicy   // POWER_POLICY* out
    );
}

@[Link("powrprof")]
lib LibPOWRPROF
  fun GetCurrentPowerPolicies = GetCurrentPowerPolicies(
    pGlobalPowerPolicy : GLOBAL_POWER_POLICY*,   # GLOBAL_POWER_POLICY* out
    pPowerPolicy : POWER_POLICY*   # POWER_POLICY* out
  ) : UInt8
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 GetCurrentPowerPoliciesNative = Uint8 Function(Pointer<Void>, Pointer<Void>);
typedef GetCurrentPowerPoliciesDart = int Function(Pointer<Void>, Pointer<Void>);
final GetCurrentPowerPolicies = DynamicLibrary.open('POWRPROF.dll')
    .lookupFunction<GetCurrentPowerPoliciesNative, GetCurrentPowerPoliciesDart>('GetCurrentPowerPolicies');
// pGlobalPowerPolicy : GLOBAL_POWER_POLICY* out -> Pointer<Void>
// pPowerPolicy : POWER_POLICY* out -> Pointer<Void>
// 文字列は package:ffi の "...".toNativeUtf16()/toNativeUtf8() で変換。

{$mode objfpc}{$H+}
function GetCurrentPowerPolicies(
  pGlobalPowerPolicy: Pointer;   // GLOBAL_POWER_POLICY* out
  pPowerPolicy: Pointer   // POWER_POLICY* out
): ByteBool; stdcall;
  external 'POWRPROF.dll' name 'GetCurrentPowerPolicies';

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

foreign import stdcall safe "GetCurrentPowerPolicies"
  c_GetCurrentPowerPolicies :: Ptr () -> Ptr () -> IO Word8
-- pGlobalPowerPolicy : GLOBAL_POWER_POLICY* out -> Ptr ()
-- pPowerPolicy : POWER_POLICY* 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 getcurrentpowerpolicies =
  foreign "GetCurrentPowerPolicies"
    ((ptr void) @-> (ptr void) @-> returning uint8_t)
(* pGlobalPowerPolicy : GLOBAL_POWER_POLICY* out -> (ptr void) *)
(* pPowerPolicy : POWER_POLICY* 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 powrprof (t "POWRPROF.dll"))
(cffi:use-foreign-library powrprof)

(cffi:defcfun ("GetCurrentPowerPolicies" get-current-power-policies :convention :stdcall) :uint8
  (p-global-power-policy :pointer)   ; GLOBAL_POWER_POLICY* out
  (p-power-policy :pointer))   ; POWER_POLICY* out
; isize/usize(INT_PTR/SIZE_T)は x64 前提で :int64/:uint64。x86 では :int32/:uint32。

use Win32::API;
my $GetCurrentPowerPolicies = Win32::API::More->new('POWRPROF',
    'BYTE GetCurrentPowerPolicies(LPVOID pGlobalPowerPolicy, LPVOID pPowerPolicy)');
# my $ret = $GetCurrentPowerPolicies->Call($pGlobalPowerPolicy, $pPowerPolicy);
# pGlobalPowerPolicy : GLOBAL_POWER_POLICY* out -> LPVOID
# pPowerPolicy : POWER_POLICY* out -> LPVOID
# 値渡し構造体は pack() した文字列、または Win32::API::Struct を使用。