GetAppliedGPOListA

// USERENV.dll  (ANSI / -A)
#include <windows.h>

DWORD GetAppliedGPOListA(
    DWORD dwFlags,
    LPCSTR pMachineName,   // optional
    PSID pSidUser,   // optional
    GUID* pGuidExtension,
    GROUP_POLICY_OBJECTA** ppGPOList
);

<DllImport("USERENV.dll", CharSet:=CharSet.Ansi, ExactSpelling:=True)>
Public Shared Function GetAppliedGPOListA(
    dwFlags As UInteger,   ' DWORD
    <MarshalAs(UnmanagedType.LPStr)> pMachineName As String,   ' LPCSTR optional
    pSidUser As IntPtr,   ' PSID optional
    ByRef pGuidExtension As Guid,   ' GUID*
    ppGPOList As IntPtr   ' GROUP_POLICY_OBJECTA** out
) As UInteger
End Function

' dwFlags : DWORD
' pMachineName : LPCSTR optional
' pSidUser : PSID optional
' pGuidExtension : GUID*
' ppGPOList : GROUP_POLICY_OBJECTA** out
Declare PtrSafe Function GetAppliedGPOListA Lib "userenv" ( _
    ByVal dwFlags As Long, _
    ByVal pMachineName As String, _
    ByVal pSidUser As LongPtr, _
    ByVal pGuidExtension As LongPtr, _
    ByVal ppGPOList As LongPtr) As Long
' VBA7前提(PtrSafe)。32bit Office では LongPtr→Long。Integer=16bit / Long=32bit / LongLong=64bit。

import ctypes
from ctypes import wintypes

GetAppliedGPOListA = ctypes.windll.userenv.GetAppliedGPOListA
GetAppliedGPOListA.restype = wintypes.DWORD
GetAppliedGPOListA.argtypes = [
    wintypes.DWORD,  # dwFlags : DWORD
    wintypes.LPCSTR,  # pMachineName : LPCSTR optional
    wintypes.HANDLE,  # pSidUser : PSID optional
    ctypes.c_void_p,  # pGuidExtension : GUID*
    ctypes.c_void_p,  # ppGPOList : GROUP_POLICY_OBJECTA** out
]

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('USERENV.dll')
GetAppliedGPOListA = Fiddle::Function.new(
  lib['GetAppliedGPOListA'],
  [
    -Fiddle::TYPE_INT,  # dwFlags : DWORD
    Fiddle::TYPE_VOIDP,  # pMachineName : LPCSTR optional
    Fiddle::TYPE_VOIDP,  # pSidUser : PSID optional
    Fiddle::TYPE_VOIDP,  # pGuidExtension : GUID*
    Fiddle::TYPE_VOIDP,  # ppGPOList : GROUP_POLICY_OBJECTA** out
  ],
  -Fiddle::TYPE_INT)

#[link(name = "userenv")]
extern "system" {
    fn GetAppliedGPOListA(
        dwFlags: u32,  // DWORD
        pMachineName: *const u8,  // LPCSTR optional
        pSidUser: *mut core::ffi::c_void,  // PSID optional
        pGuidExtension: *mut GUID,  // GUID*
        ppGPOList: *mut *mut GROUP_POLICY_OBJECTA  // GROUP_POLICY_OBJECTA** out
    ) -> u32;
}
// crates: windows-sys provides ready-made bindings for this API.

$sig = @"
[DllImport("USERENV.dll", CharSet = CharSet.Ansi)]
public static extern uint GetAppliedGPOListA(uint dwFlags, [MarshalAs(UnmanagedType.LPStr)] string pMachineName, IntPtr pSidUser, ref Guid pGuidExtension, IntPtr ppGPOList);
"@
$api = Add-Type -MemberDefinition $sig -Name 'USERENV_GetAppliedGPOListA' -Namespace Win32 -PassThru
# $api::GetAppliedGPOListA(dwFlags, pMachineName, pSidUser, pGuidExtension, ppGPOList)

#uselib "USERENV.dll"
#func global GetAppliedGPOListA "GetAppliedGPOListA" sptr, sptr, sptr, sptr, sptr
; GetAppliedGPOListA dwFlags, pMachineName, pSidUser, varptr(pGuidExtension), varptr(ppGPOList)   ; 戻り値は stat
; dwFlags : DWORD -> "sptr"
; pMachineName : LPCSTR optional -> "sptr"
; pSidUser : PSID optional -> "sptr"
; pGuidExtension : GUID* -> "sptr"
; ppGPOList : GROUP_POLICY_OBJECTA** 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。

#uselib "USERENV.dll"
#cfunc global GetAppliedGPOListA "GetAppliedGPOListA" int, str, sptr, var, var
; res = GetAppliedGPOListA(dwFlags, pMachineName, pSidUser, pGuidExtension, ppGPOList)
; dwFlags : DWORD -> "int"
; pMachineName : LPCSTR optional -> "str"
; pSidUser : PSID optional -> "sptr"
; pGuidExtension : GUID* -> "var"
; ppGPOList : GROUP_POLICY_OBJECTA** 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。

; DWORD GetAppliedGPOListA(DWORD dwFlags, LPCSTR pMachineName, PSID pSidUser, GUID* pGuidExtension, GROUP_POLICY_OBJECTA** ppGPOList)
#uselib "USERENV.dll"
#cfunc global GetAppliedGPOListA "GetAppliedGPOListA" int, str, intptr, var, var
; res = GetAppliedGPOListA(dwFlags, pMachineName, pSidUser, pGuidExtension, ppGPOList)
; dwFlags : DWORD -> "int"
; pMachineName : LPCSTR optional -> "str"
; pSidUser : PSID optional -> "intptr"
; pGuidExtension : GUID* -> "var"
; ppGPOList : GROUP_POLICY_OBJECTA** 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 (
	userenv = windows.NewLazySystemDLL("USERENV.dll")
	procGetAppliedGPOListA = userenv.NewProc("GetAppliedGPOListA")
)

// dwFlags (DWORD), pMachineName (LPCSTR optional), pSidUser (PSID optional), pGuidExtension (GUID*), ppGPOList (GROUP_POLICY_OBJECTA** out)
r1, _, err := procGetAppliedGPOListA.Call(
	uintptr(dwFlags),
	uintptr(unsafe.Pointer(windows.BytePtrFromString(pMachineName))),
	uintptr(pSidUser),
	uintptr(pGuidExtension),
	uintptr(ppGPOList),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // DWORD

function GetAppliedGPOListA(
  dwFlags: DWORD;   // DWORD
  pMachineName: PAnsiChar;   // LPCSTR optional
  pSidUser: THandle;   // PSID optional
  pGuidExtension: PGUID;   // GUID*
  ppGPOList: Pointer   // GROUP_POLICY_OBJECTA** out
): DWORD; stdcall;
  external 'USERENV.dll' name 'GetAppliedGPOListA';

result := DllCall("USERENV\GetAppliedGPOListA"
    , "UInt", dwFlags   ; DWORD
    , "AStr", pMachineName   ; LPCSTR optional
    , "Ptr", pSidUser   ; PSID optional
    , "Ptr", pGuidExtension   ; GUID*
    , "Ptr", ppGPOList   ; GROUP_POLICY_OBJECTA** out
    , "UInt")   ; return: DWORD

●GetAppliedGPOListA(dwFlags, pMachineName, pSidUser, pGuidExtension, ppGPOList) = DLL("USERENV.dll", "dword GetAppliedGPOListA(dword, char*, void*, void*, void*)")
# 呼び出し: GetAppliedGPOListA(dwFlags, pMachineName, pSidUser, pGuidExtension, ppGPOList)
# dwFlags : DWORD -> "dword"
# pMachineName : LPCSTR optional -> "char*"
# pSidUser : PSID optional -> "void*"
# pGuidExtension : GUID* -> "void*"
# ppGPOList : GROUP_POLICY_OBJECTA** 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)。