CryptUnprotectMemory

// CRYPT32.dll
#include <windows.h>

BOOL CryptUnprotectMemory(
    void* pDataIn,
    DWORD cbDataIn,
    DWORD dwFlags
);

<DllImport("CRYPT32.dll", SetLastError:=True, ExactSpelling:=True)>
Public Shared Function CryptUnprotectMemory(
    pDataIn As IntPtr,   ' void* in/out
    cbDataIn As UInteger,   ' DWORD
    dwFlags As UInteger   ' DWORD
) As Boolean
End Function

' pDataIn : void* in/out
' cbDataIn : DWORD
' dwFlags : DWORD
Declare PtrSafe Function CryptUnprotectMemory Lib "crypt32" ( _
    ByVal pDataIn As LongPtr, _
    ByVal cbDataIn As Long, _
    ByVal dwFlags 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

CryptUnprotectMemory = ctypes.windll.crypt32.CryptUnprotectMemory
CryptUnprotectMemory.restype = wintypes.BOOL
CryptUnprotectMemory.argtypes = [
    ctypes.POINTER(None),  # pDataIn : void* in/out
    wintypes.DWORD,  # cbDataIn : DWORD
    wintypes.DWORD,  # dwFlags : DWORD
]
# GetLastError: use ctypes.GetLastError() (or ctypes.WinDLL(use_last_error=True))

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('CRYPT32.dll')
CryptUnprotectMemory = Fiddle::Function.new(
  lib['CryptUnprotectMemory'],
  [
    Fiddle::TYPE_VOIDP,  # pDataIn : void* in/out
    -Fiddle::TYPE_INT,  # cbDataIn : DWORD
    -Fiddle::TYPE_INT,  # dwFlags : DWORD
  ],
  Fiddle::TYPE_INT)

#[link(name = "crypt32")]
extern "system" {
    fn CryptUnprotectMemory(
        pDataIn: *mut (),  // void* in/out
        cbDataIn: u32,  // DWORD
        dwFlags: u32  // DWORD
    ) -> i32;
}
// crates: windows-sys provides ready-made bindings for this API.

$sig = @"
[return: MarshalAs(UnmanagedType.Bool)]
[DllImport("CRYPT32.dll", SetLastError = true)]
public static extern bool CryptUnprotectMemory(IntPtr pDataIn, uint cbDataIn, uint dwFlags);
"@
$api = Add-Type -MemberDefinition $sig -Name 'CRYPT32_CryptUnprotectMemory' -Namespace Win32 -PassThru
# $api::CryptUnprotectMemory(pDataIn, cbDataIn, dwFlags)

#uselib "CRYPT32.dll"
#func global CryptUnprotectMemory "CryptUnprotectMemory" sptr, sptr, sptr
; CryptUnprotectMemory pDataIn, cbDataIn, dwFlags   ; 戻り値は stat
; pDataIn : void* in/out -> "sptr"
; cbDataIn : DWORD -> "sptr"
; dwFlags : 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 "CRYPT32.dll"
#cfunc global CryptUnprotectMemory "CryptUnprotectMemory" sptr, int, int
; res = CryptUnprotectMemory(pDataIn, cbDataIn, dwFlags)
; pDataIn : void* in/out -> "sptr"
; cbDataIn : DWORD -> "int"
; dwFlags : DWORD -> "int"

; BOOL CryptUnprotectMemory(void* pDataIn, DWORD cbDataIn, DWORD dwFlags)
#uselib "CRYPT32.dll"
#cfunc global CryptUnprotectMemory "CryptUnprotectMemory" intptr, int, int
; res = CryptUnprotectMemory(pDataIn, cbDataIn, dwFlags)
; pDataIn : void* in/out -> "intptr"
; cbDataIn : DWORD -> "int"
; dwFlags : DWORD -> "int"

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

var (
	crypt32 = windows.NewLazySystemDLL("CRYPT32.dll")
	procCryptUnprotectMemory = crypt32.NewProc("CryptUnprotectMemory")
)

// pDataIn (void* in/out), cbDataIn (DWORD), dwFlags (DWORD)
r1, _, err := procCryptUnprotectMemory.Call(
	uintptr(pDataIn),
	uintptr(cbDataIn),
	uintptr(dwFlags),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // BOOL

function CryptUnprotectMemory(
  pDataIn: Pointer;   // void* in/out
  cbDataIn: DWORD;   // DWORD
  dwFlags: DWORD   // DWORD
): BOOL; stdcall;
  external 'CRYPT32.dll' name 'CryptUnprotectMemory';

result := DllCall("CRYPT32\CryptUnprotectMemory"
    , "Ptr", pDataIn   ; void* in/out
    , "UInt", cbDataIn   ; DWORD
    , "UInt", dwFlags   ; DWORD
    , "Int")   ; return: BOOL

●CryptUnprotectMemory(pDataIn, cbDataIn, dwFlags) = DLL("CRYPT32.dll", "bool CryptUnprotectMemory(void*, dword, dword)")
# 呼び出し: CryptUnprotectMemory(pDataIn, cbDataIn, dwFlags)
# pDataIn : void* in/out -> "void*"
# cbDataIn : DWORD -> "dword"
# dwFlags : 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)。