SetProtectedPolicy

// KERNEL32.dll
#include <windows.h>

BOOL SetProtectedPolicy(
    const GUID* PolicyGuid,
    UINT_PTR PolicyValue,
    UINT_PTR* OldPolicyValue   // optional
);

<DllImport("KERNEL32.dll", SetLastError:=True, ExactSpelling:=True)>
Public Shared Function SetProtectedPolicy(
    ByRef PolicyGuid As Guid,   ' GUID*
    PolicyValue As UIntPtr,   ' UINT_PTR
    OldPolicyValue As IntPtr   ' UINT_PTR* optional, out
) As Boolean
End Function

' PolicyGuid : GUID*
' PolicyValue : UINT_PTR
' OldPolicyValue : UINT_PTR* optional, out
Declare PtrSafe Function SetProtectedPolicy Lib "kernel32" ( _
    ByVal PolicyGuid As LongPtr, _
    ByVal PolicyValue As LongPtr, _
    ByVal OldPolicyValue 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

SetProtectedPolicy = ctypes.windll.kernel32.SetProtectedPolicy
SetProtectedPolicy.restype = wintypes.BOOL
SetProtectedPolicy.argtypes = [
    ctypes.c_void_p,  # PolicyGuid : GUID*
    ctypes.c_size_t,  # PolicyValue : UINT_PTR
    ctypes.POINTER(ctypes.c_size_t),  # OldPolicyValue : UINT_PTR* optional, out
]
# GetLastError: use ctypes.GetLastError() (or ctypes.WinDLL(use_last_error=True))

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('KERNEL32.dll')
SetProtectedPolicy = Fiddle::Function.new(
  lib['SetProtectedPolicy'],
  [
    Fiddle::TYPE_VOIDP,  # PolicyGuid : GUID*
    Fiddle::TYPE_UINTPTR_T,  # PolicyValue : UINT_PTR
    Fiddle::TYPE_VOIDP,  # OldPolicyValue : UINT_PTR* optional, out
  ],
  Fiddle::TYPE_INT)

#[link(name = "kernel32")]
extern "system" {
    fn SetProtectedPolicy(
        PolicyGuid: *const GUID,  // GUID*
        PolicyValue: usize,  // UINT_PTR
        OldPolicyValue: *mut usize  // UINT_PTR* optional, out
    ) -> i32;
}
// crates: windows-sys provides ready-made bindings for this API.

$sig = @"
[return: MarshalAs(UnmanagedType.Bool)]
[DllImport("KERNEL32.dll", SetLastError = true)]
public static extern bool SetProtectedPolicy(ref Guid PolicyGuid, UIntPtr PolicyValue, IntPtr OldPolicyValue);
"@
$api = Add-Type -MemberDefinition $sig -Name 'KERNEL32_SetProtectedPolicy' -Namespace Win32 -PassThru
# $api::SetProtectedPolicy(PolicyGuid, PolicyValue, OldPolicyValue)

#uselib "KERNEL32.dll"
#func global SetProtectedPolicy "SetProtectedPolicy" sptr, sptr, sptr
; SetProtectedPolicy varptr(PolicyGuid), PolicyValue, varptr(OldPolicyValue)   ; 戻り値は stat
; PolicyGuid : GUID* -> "sptr"
; PolicyValue : UINT_PTR -> "sptr"
; OldPolicyValue : UINT_PTR* optional, 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 "KERNEL32.dll"
#cfunc global SetProtectedPolicy "SetProtectedPolicy" var, sptr, var
; res = SetProtectedPolicy(PolicyGuid, PolicyValue, OldPolicyValue)
; PolicyGuid : GUID* -> "var"
; PolicyValue : UINT_PTR -> "sptr"
; OldPolicyValue : UINT_PTR* optional, 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。

; BOOL SetProtectedPolicy(GUID* PolicyGuid, UINT_PTR PolicyValue, UINT_PTR* OldPolicyValue)
#uselib "KERNEL32.dll"
#cfunc global SetProtectedPolicy "SetProtectedPolicy" var, intptr, var
; res = SetProtectedPolicy(PolicyGuid, PolicyValue, OldPolicyValue)
; PolicyGuid : GUID* -> "var"
; PolicyValue : UINT_PTR -> "intptr"
; OldPolicyValue : UINT_PTR* optional, 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 (
	kernel32 = windows.NewLazySystemDLL("KERNEL32.dll")
	procSetProtectedPolicy = kernel32.NewProc("SetProtectedPolicy")
)

// PolicyGuid (GUID*), PolicyValue (UINT_PTR), OldPolicyValue (UINT_PTR* optional, out)
r1, _, err := procSetProtectedPolicy.Call(
	uintptr(PolicyGuid),
	uintptr(PolicyValue),
	uintptr(OldPolicyValue),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // BOOL

function SetProtectedPolicy(
  PolicyGuid: PGUID;   // GUID*
  PolicyValue: NativeUInt;   // UINT_PTR
  OldPolicyValue: Pointer   // UINT_PTR* optional, out
): BOOL; stdcall;
  external 'KERNEL32.dll' name 'SetProtectedPolicy';

result := DllCall("KERNEL32\SetProtectedPolicy"
    , "Ptr", PolicyGuid   ; GUID*
    , "UPtr", PolicyValue   ; UINT_PTR
    , "Ptr", OldPolicyValue   ; UINT_PTR* optional, out
    , "Int")   ; return: BOOL

●SetProtectedPolicy(PolicyGuid, PolicyValue, OldPolicyValue) = DLL("KERNEL32.dll", "bool SetProtectedPolicy(void*, int, void*)")
# 呼び出し: SetProtectedPolicy(PolicyGuid, PolicyValue, OldPolicyValue)
# PolicyGuid : GUID* -> "void*"
# PolicyValue : UINT_PTR -> "int"
# OldPolicyValue : UINT_PTR* optional, 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)。