SetUserFileEncryptionKeyEx

// ADVAPI32.dll
#include <windows.h>

DWORD SetUserFileEncryptionKeyEx(
    ENCRYPTION_CERTIFICATE* pEncryptionCertificate,   // optional
    DWORD dwCapabilities,
    DWORD dwFlags,
    void* pvReserved   // optional
);

<DllImport("ADVAPI32.dll", ExactSpelling:=True)>
Public Shared Function SetUserFileEncryptionKeyEx(
    pEncryptionCertificate As IntPtr,   ' ENCRYPTION_CERTIFICATE* optional
    dwCapabilities As UInteger,   ' DWORD
    dwFlags As UInteger,   ' DWORD
    pvReserved As IntPtr   ' void* optional
) As UInteger
End Function

' pEncryptionCertificate : ENCRYPTION_CERTIFICATE* optional
' dwCapabilities : DWORD
' dwFlags : DWORD
' pvReserved : void* optional
Declare PtrSafe Function SetUserFileEncryptionKeyEx Lib "advapi32" ( _
    ByVal pEncryptionCertificate As LongPtr, _
    ByVal dwCapabilities As Long, _
    ByVal dwFlags As Long, _
    ByVal pvReserved 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

SetUserFileEncryptionKeyEx = ctypes.windll.advapi32.SetUserFileEncryptionKeyEx
SetUserFileEncryptionKeyEx.restype = wintypes.DWORD
SetUserFileEncryptionKeyEx.argtypes = [
    ctypes.c_void_p,  # pEncryptionCertificate : ENCRYPTION_CERTIFICATE* optional
    wintypes.DWORD,  # dwCapabilities : DWORD
    wintypes.DWORD,  # dwFlags : DWORD
    ctypes.POINTER(None),  # pvReserved : void* optional
]

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('ADVAPI32.dll')
SetUserFileEncryptionKeyEx = Fiddle::Function.new(
  lib['SetUserFileEncryptionKeyEx'],
  [
    Fiddle::TYPE_VOIDP,  # pEncryptionCertificate : ENCRYPTION_CERTIFICATE* optional
    -Fiddle::TYPE_INT,  # dwCapabilities : DWORD
    -Fiddle::TYPE_INT,  # dwFlags : DWORD
    Fiddle::TYPE_VOIDP,  # pvReserved : void* optional
  ],
  -Fiddle::TYPE_INT)

#[link(name = "advapi32")]
extern "system" {
    fn SetUserFileEncryptionKeyEx(
        pEncryptionCertificate: *mut ENCRYPTION_CERTIFICATE,  // ENCRYPTION_CERTIFICATE* optional
        dwCapabilities: u32,  // DWORD
        dwFlags: u32,  // DWORD
        pvReserved: *mut ()  // void* optional
    ) -> u32;
}
// crates: windows-sys provides ready-made bindings for this API.

$sig = @"
[DllImport("ADVAPI32.dll")]
public static extern uint SetUserFileEncryptionKeyEx(IntPtr pEncryptionCertificate, uint dwCapabilities, uint dwFlags, IntPtr pvReserved);
"@
$api = Add-Type -MemberDefinition $sig -Name 'ADVAPI32_SetUserFileEncryptionKeyEx' -Namespace Win32 -PassThru
# $api::SetUserFileEncryptionKeyEx(pEncryptionCertificate, dwCapabilities, dwFlags, pvReserved)

#uselib "ADVAPI32.dll"
#func global SetUserFileEncryptionKeyEx "SetUserFileEncryptionKeyEx" sptr, sptr, sptr, sptr
; SetUserFileEncryptionKeyEx varptr(pEncryptionCertificate), dwCapabilities, dwFlags, pvReserved   ; 戻り値は stat
; pEncryptionCertificate : ENCRYPTION_CERTIFICATE* optional -> "sptr"
; dwCapabilities : DWORD -> "sptr"
; dwFlags : DWORD -> "sptr"
; pvReserved : void* optional -> "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 "ADVAPI32.dll"
#cfunc global SetUserFileEncryptionKeyEx "SetUserFileEncryptionKeyEx" var, int, int, sptr
; res = SetUserFileEncryptionKeyEx(pEncryptionCertificate, dwCapabilities, dwFlags, pvReserved)
; pEncryptionCertificate : ENCRYPTION_CERTIFICATE* optional -> "var"
; dwCapabilities : DWORD -> "int"
; dwFlags : DWORD -> "int"
; pvReserved : void* optional -> "sptr"
; ※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 SetUserFileEncryptionKeyEx(ENCRYPTION_CERTIFICATE* pEncryptionCertificate, DWORD dwCapabilities, DWORD dwFlags, void* pvReserved)
#uselib "ADVAPI32.dll"
#cfunc global SetUserFileEncryptionKeyEx "SetUserFileEncryptionKeyEx" var, int, int, intptr
; res = SetUserFileEncryptionKeyEx(pEncryptionCertificate, dwCapabilities, dwFlags, pvReserved)
; pEncryptionCertificate : ENCRYPTION_CERTIFICATE* optional -> "var"
; dwCapabilities : DWORD -> "int"
; dwFlags : DWORD -> "int"
; pvReserved : void* optional -> "intptr"
; ※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 (
	advapi32 = windows.NewLazySystemDLL("ADVAPI32.dll")
	procSetUserFileEncryptionKeyEx = advapi32.NewProc("SetUserFileEncryptionKeyEx")
)

// pEncryptionCertificate (ENCRYPTION_CERTIFICATE* optional), dwCapabilities (DWORD), dwFlags (DWORD), pvReserved (void* optional)
r1, _, err := procSetUserFileEncryptionKeyEx.Call(
	uintptr(pEncryptionCertificate),
	uintptr(dwCapabilities),
	uintptr(dwFlags),
	uintptr(pvReserved),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // DWORD

function SetUserFileEncryptionKeyEx(
  pEncryptionCertificate: Pointer;   // ENCRYPTION_CERTIFICATE* optional
  dwCapabilities: DWORD;   // DWORD
  dwFlags: DWORD;   // DWORD
  pvReserved: Pointer   // void* optional
): DWORD; stdcall;
  external 'ADVAPI32.dll' name 'SetUserFileEncryptionKeyEx';

result := DllCall("ADVAPI32\SetUserFileEncryptionKeyEx"
    , "Ptr", pEncryptionCertificate   ; ENCRYPTION_CERTIFICATE* optional
    , "UInt", dwCapabilities   ; DWORD
    , "UInt", dwFlags   ; DWORD
    , "Ptr", pvReserved   ; void* optional
    , "UInt")   ; return: DWORD

●SetUserFileEncryptionKeyEx(pEncryptionCertificate, dwCapabilities, dwFlags, pvReserved) = DLL("ADVAPI32.dll", "dword SetUserFileEncryptionKeyEx(void*, dword, dword, void*)")
# 呼び出し: SetUserFileEncryptionKeyEx(pEncryptionCertificate, dwCapabilities, dwFlags, pvReserved)
# pEncryptionCertificate : ENCRYPTION_CERTIFICATE* optional -> "void*"
# dwCapabilities : DWORD -> "dword"
# dwFlags : DWORD -> "dword"
# pvReserved : void* optional -> "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)。