RtlGetSystemGlobalData

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

DWORD RtlGetSystemGlobalData(
    RTL_SYSTEM_GLOBAL_DATA_ID DataId,
    void* Buffer,
    DWORD Size
);

<DllImport("ntdllk.dll", ExactSpelling:=True)>
Public Shared Function RtlGetSystemGlobalData(
    DataId As Integer,   ' RTL_SYSTEM_GLOBAL_DATA_ID
    Buffer As IntPtr,   ' void* in/out
    Size As UInteger   ' DWORD
) As UInteger
End Function

' DataId : RTL_SYSTEM_GLOBAL_DATA_ID
' Buffer : void* in/out
' Size : DWORD
Declare PtrSafe Function RtlGetSystemGlobalData Lib "ntdllk" ( _
    ByVal DataId As Long, _
    ByVal Buffer As LongPtr, _
    ByVal Size 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

RtlGetSystemGlobalData = ctypes.windll.ntdllk.RtlGetSystemGlobalData
RtlGetSystemGlobalData.restype = wintypes.DWORD
RtlGetSystemGlobalData.argtypes = [
    ctypes.c_int,  # DataId : RTL_SYSTEM_GLOBAL_DATA_ID
    ctypes.POINTER(None),  # Buffer : void* in/out
    wintypes.DWORD,  # Size : DWORD
]

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('ntdllk.dll')
RtlGetSystemGlobalData = Fiddle::Function.new(
  lib['RtlGetSystemGlobalData'],
  [
    Fiddle::TYPE_INT,  # DataId : RTL_SYSTEM_GLOBAL_DATA_ID
    Fiddle::TYPE_VOIDP,  # Buffer : void* in/out
    -Fiddle::TYPE_INT,  # Size : DWORD
  ],
  -Fiddle::TYPE_INT)

#[link(name = "ntdllk")]
extern "system" {
    fn RtlGetSystemGlobalData(
        DataId: i32,  // RTL_SYSTEM_GLOBAL_DATA_ID
        Buffer: *mut (),  // void* in/out
        Size: u32  // DWORD
    ) -> u32;
}
// crates: windows-sys provides ready-made bindings for this API.

$sig = @"
[DllImport("ntdllk.dll")]
public static extern uint RtlGetSystemGlobalData(int DataId, IntPtr Buffer, uint Size);
"@
$api = Add-Type -MemberDefinition $sig -Name 'ntdllk_RtlGetSystemGlobalData' -Namespace Win32 -PassThru
# $api::RtlGetSystemGlobalData(DataId, Buffer, Size)

#uselib "ntdllk.dll"
#func global RtlGetSystemGlobalData "RtlGetSystemGlobalData" sptr, sptr, sptr
; RtlGetSystemGlobalData DataId, Buffer, Size   ; 戻り値は stat
; DataId : RTL_SYSTEM_GLOBAL_DATA_ID -> "sptr"
; Buffer : void* in/out -> "sptr"
; Size : DWORD -> "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。

#uselib "ntdllk.dll"
#cfunc global RtlGetSystemGlobalData "RtlGetSystemGlobalData" int, sptr, int
; res = RtlGetSystemGlobalData(DataId, Buffer, Size)
; DataId : RTL_SYSTEM_GLOBAL_DATA_ID -> "int"
; Buffer : void* in/out -> "sptr"
; Size : DWORD -> "int"

; DWORD RtlGetSystemGlobalData(RTL_SYSTEM_GLOBAL_DATA_ID DataId, void* Buffer, DWORD Size)
#uselib "ntdllk.dll"
#cfunc global RtlGetSystemGlobalData "RtlGetSystemGlobalData" int, intptr, int
; res = RtlGetSystemGlobalData(DataId, Buffer, Size)
; DataId : RTL_SYSTEM_GLOBAL_DATA_ID -> "int"
; Buffer : void* in/out -> "intptr"
; Size : DWORD -> "int"

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

var (
	ntdllk = windows.NewLazySystemDLL("ntdllk.dll")
	procRtlGetSystemGlobalData = ntdllk.NewProc("RtlGetSystemGlobalData")
)

// DataId (RTL_SYSTEM_GLOBAL_DATA_ID), Buffer (void* in/out), Size (DWORD)
r1, _, err := procRtlGetSystemGlobalData.Call(
	uintptr(DataId),
	uintptr(Buffer),
	uintptr(Size),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // DWORD

function RtlGetSystemGlobalData(
  DataId: Integer;   // RTL_SYSTEM_GLOBAL_DATA_ID
  Buffer: Pointer;   // void* in/out
  Size: DWORD   // DWORD
): DWORD; stdcall;
  external 'ntdllk.dll' name 'RtlGetSystemGlobalData';

result := DllCall("ntdllk\RtlGetSystemGlobalData"
    , "Int", DataId   ; RTL_SYSTEM_GLOBAL_DATA_ID
    , "Ptr", Buffer   ; void* in/out
    , "UInt", Size   ; DWORD
    , "UInt")   ; return: DWORD

●RtlGetSystemGlobalData(DataId, Buffer, Size) = DLL("ntdllk.dll", "dword RtlGetSystemGlobalData(int, void*, dword)")
# 呼び出し: RtlGetSystemGlobalData(DataId, Buffer, Size)
# DataId : RTL_SYSTEM_GLOBAL_DATA_ID -> "int"
# Buffer : void* in/out -> "void*"
# Size : DWORD -> "dword"
# 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 "ntdllk" fn RtlGetSystemGlobalData(
    DataId: i32, // RTL_SYSTEM_GLOBAL_DATA_ID
    Buffer: ?*anyopaque, // void* in/out
    Size: u32 // DWORD
) callconv(std.os.windows.WINAPI) u32;

proc RtlGetSystemGlobalData(
    DataId: int32,  # RTL_SYSTEM_GLOBAL_DATA_ID
    Buffer: pointer,  # void* in/out
    Size: uint32  # DWORD
): uint32 {.importc: "RtlGetSystemGlobalData", stdcall, dynlib: "ntdllk.dll".}

pragma(lib, "ntdllk");
extern(Windows)
uint RtlGetSystemGlobalData(
    int DataId,   // RTL_SYSTEM_GLOBAL_DATA_ID
    void* Buffer,   // void* in/out
    uint Size   // DWORD
);

ccall((:RtlGetSystemGlobalData, "ntdllk.dll"), stdcall, UInt32,
      (Int32, Ptr{Cvoid}, UInt32),
      DataId, Buffer, Size)
# DataId : RTL_SYSTEM_GLOBAL_DATA_ID -> Int32
# Buffer : void* in/out -> Ptr{Cvoid}
# Size : DWORD -> UInt32
# stdcall は 32bit のみ意味を持つ(x64 では無視)。

local ffi = require("ffi")
ffi.cdef[[
uint32_t RtlGetSystemGlobalData(
    int32_t DataId,
    void* Buffer,
    uint32_t Size);
]]
local ntdllk = ffi.load("ntdllk")
-- ntdllk.RtlGetSystemGlobalData(DataId, Buffer, Size)
-- DataId : RTL_SYSTEM_GLOBAL_DATA_ID
-- Buffer : void* in/out
-- Size : DWORD
-- 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('ntdllk.dll');
const RtlGetSystemGlobalData = lib.func('__stdcall', 'RtlGetSystemGlobalData', 'uint32_t', ['int32_t', 'void *', 'uint32_t']);
// RtlGetSystemGlobalData(DataId, Buffer, Size)
// DataId : RTL_SYSTEM_GLOBAL_DATA_ID -> 'int32_t'
// Buffer : void* in/out -> 'void *'
// Size : DWORD -> '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("ntdllk.dll", {
  RtlGetSystemGlobalData: { parameters: ["i32", "pointer", "u32"], result: "u32" },
});
// lib.symbols.RtlGetSystemGlobalData(DataId, Buffer, Size)
// DataId : RTL_SYSTEM_GLOBAL_DATA_ID -> "i32"
// Buffer : void* in/out -> "pointer"
// Size : DWORD -> "u32"
// 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 RtlGetSystemGlobalData(
    int32_t DataId,
    void* Buffer,
    uint32_t Size);
C, "ntdllk.dll");
// $ffi->RtlGetSystemGlobalData(DataId, Buffer, Size);
// DataId : RTL_SYSTEM_GLOBAL_DATA_ID
// Buffer : void* in/out
// Size : DWORD
// 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 Ntdllk extends StdCallLibrary {
    Ntdllk INSTANCE = Native.load("ntdllk", Ntdllk.class);
    int RtlGetSystemGlobalData(
        int DataId,   // RTL_SYSTEM_GLOBAL_DATA_ID
        Pointer Buffer,   // void* in/out
        int Size   // DWORD
    );
}

@[Link("ntdllk")]
lib Libntdllk
  fun RtlGetSystemGlobalData = RtlGetSystemGlobalData(
    DataId : Int32,   # RTL_SYSTEM_GLOBAL_DATA_ID
    Buffer : Void*,   # void* in/out
    Size : UInt32   # DWORD
  ) : 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 RtlGetSystemGlobalDataNative = Uint32 Function(Int32, Pointer<Void>, Uint32);
typedef RtlGetSystemGlobalDataDart = int Function(int, Pointer<Void>, int);
final RtlGetSystemGlobalData = DynamicLibrary.open('ntdllk.dll')
    .lookupFunction<RtlGetSystemGlobalDataNative, RtlGetSystemGlobalDataDart>('RtlGetSystemGlobalData');
// DataId : RTL_SYSTEM_GLOBAL_DATA_ID -> Int32
// Buffer : void* in/out -> Pointer<Void>
// Size : DWORD -> Uint32
// 文字列は package:ffi の "...".toNativeUtf16()/toNativeUtf8() で変換。

{$mode objfpc}{$H+}
function RtlGetSystemGlobalData(
  DataId: Integer;   // RTL_SYSTEM_GLOBAL_DATA_ID
  Buffer: Pointer;   // void* in/out
  Size: DWORD   // DWORD
): DWORD; stdcall;
  external 'ntdllk.dll' name 'RtlGetSystemGlobalData';

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

foreign import stdcall safe "RtlGetSystemGlobalData"
  c_RtlGetSystemGlobalData :: Int32 -> Ptr () -> Word32 -> IO Word32
-- DataId : RTL_SYSTEM_GLOBAL_DATA_ID -> Int32
-- Buffer : void* in/out -> Ptr ()
-- Size : DWORD -> 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 rtlgetsystemglobaldata =
  foreign "RtlGetSystemGlobalData"
    (int32_t @-> (ptr void) @-> uint32_t @-> returning uint32_t)
(* DataId : RTL_SYSTEM_GLOBAL_DATA_ID -> int32_t *)
(* Buffer : void* in/out -> (ptr void) *)
(* Size : DWORD -> 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 ntdllk (t "ntdllk.dll"))
(cffi:use-foreign-library ntdllk)

(cffi:defcfun ("RtlGetSystemGlobalData" rtl-get-system-global-data :convention :stdcall) :uint32
  (data-id :int32)   ; RTL_SYSTEM_GLOBAL_DATA_ID
  (buffer :pointer)   ; void* in/out
  (size :uint32))   ; DWORD
; isize/usize(INT_PTR/SIZE_T)は x64 前提で :int64/:uint64。x86 では :int32/:uint32。

use Win32::API;
my $RtlGetSystemGlobalData = Win32::API::More->new('ntdllk',
    'DWORD RtlGetSystemGlobalData(int DataId, LPVOID Buffer, DWORD Size)');
# my $ret = $RtlGetSystemGlobalData->Call($DataId, $Buffer, $Size);
# DataId : RTL_SYSTEM_GLOBAL_DATA_ID -> int
# Buffer : void* in/out -> LPVOID
# Size : DWORD -> DWORD
# 値渡し構造体は pack() した文字列、または Win32::API::Struct を使用。