ReadEncryptedFileRaw

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

DWORD ReadEncryptedFileRaw(
    PFE_EXPORT_FUNC pfExportCallback,
    void* pvCallbackContext,   // optional
    void* pvContext
);

<DllImport("ADVAPI32.dll", ExactSpelling:=True)>
Public Shared Function ReadEncryptedFileRaw(
    pfExportCallback As IntPtr,   ' PFE_EXPORT_FUNC
    pvCallbackContext As IntPtr,   ' void* optional
    pvContext As IntPtr   ' void*
) As UInteger
End Function

' pfExportCallback : PFE_EXPORT_FUNC
' pvCallbackContext : void* optional
' pvContext : void*
Declare PtrSafe Function ReadEncryptedFileRaw Lib "advapi32" ( _
    ByVal pfExportCallback As LongPtr, _
    ByVal pvCallbackContext As LongPtr, _
    ByVal pvContext 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

ReadEncryptedFileRaw = ctypes.windll.advapi32.ReadEncryptedFileRaw
ReadEncryptedFileRaw.restype = wintypes.DWORD
ReadEncryptedFileRaw.argtypes = [
    ctypes.c_void_p,  # pfExportCallback : PFE_EXPORT_FUNC
    ctypes.POINTER(None),  # pvCallbackContext : void* optional
    ctypes.POINTER(None),  # pvContext : void*
]

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('ADVAPI32.dll')
ReadEncryptedFileRaw = Fiddle::Function.new(
  lib['ReadEncryptedFileRaw'],
  [
    Fiddle::TYPE_VOIDP,  # pfExportCallback : PFE_EXPORT_FUNC
    Fiddle::TYPE_VOIDP,  # pvCallbackContext : void* optional
    Fiddle::TYPE_VOIDP,  # pvContext : void*
  ],
  -Fiddle::TYPE_INT)

#[link(name = "advapi32")]
extern "system" {
    fn ReadEncryptedFileRaw(
        pfExportCallback: *const core::ffi::c_void,  // PFE_EXPORT_FUNC
        pvCallbackContext: *mut (),  // void* optional
        pvContext: *mut ()  // void*
    ) -> u32;
}
// crates: windows-sys provides ready-made bindings for this API.

$sig = @"
[DllImport("ADVAPI32.dll")]
public static extern uint ReadEncryptedFileRaw(IntPtr pfExportCallback, IntPtr pvCallbackContext, IntPtr pvContext);
"@
$api = Add-Type -MemberDefinition $sig -Name 'ADVAPI32_ReadEncryptedFileRaw' -Namespace Win32 -PassThru
# $api::ReadEncryptedFileRaw(pfExportCallback, pvCallbackContext, pvContext)

#uselib "ADVAPI32.dll"
#func global ReadEncryptedFileRaw "ReadEncryptedFileRaw" sptr, sptr, sptr
; ReadEncryptedFileRaw pfExportCallback, pvCallbackContext, pvContext   ; 戻り値は stat
; pfExportCallback : PFE_EXPORT_FUNC -> "sptr"
; pvCallbackContext : void* optional -> "sptr"
; pvContext : void* -> "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 ReadEncryptedFileRaw "ReadEncryptedFileRaw" sptr, sptr, sptr
; res = ReadEncryptedFileRaw(pfExportCallback, pvCallbackContext, pvContext)
; pfExportCallback : PFE_EXPORT_FUNC -> "sptr"
; pvCallbackContext : void* optional -> "sptr"
; pvContext : void* -> "sptr"

; DWORD ReadEncryptedFileRaw(PFE_EXPORT_FUNC pfExportCallback, void* pvCallbackContext, void* pvContext)
#uselib "ADVAPI32.dll"
#cfunc global ReadEncryptedFileRaw "ReadEncryptedFileRaw" intptr, intptr, intptr
; res = ReadEncryptedFileRaw(pfExportCallback, pvCallbackContext, pvContext)
; pfExportCallback : PFE_EXPORT_FUNC -> "intptr"
; pvCallbackContext : void* optional -> "intptr"
; pvContext : void* -> "intptr"

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

var (
	advapi32 = windows.NewLazySystemDLL("ADVAPI32.dll")
	procReadEncryptedFileRaw = advapi32.NewProc("ReadEncryptedFileRaw")
)

// pfExportCallback (PFE_EXPORT_FUNC), pvCallbackContext (void* optional), pvContext (void*)
r1, _, err := procReadEncryptedFileRaw.Call(
	uintptr(pfExportCallback),
	uintptr(pvCallbackContext),
	uintptr(pvContext),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // DWORD

function ReadEncryptedFileRaw(
  pfExportCallback: Pointer;   // PFE_EXPORT_FUNC
  pvCallbackContext: Pointer;   // void* optional
  pvContext: Pointer   // void*
): DWORD; stdcall;
  external 'ADVAPI32.dll' name 'ReadEncryptedFileRaw';

result := DllCall("ADVAPI32\ReadEncryptedFileRaw"
    , "Ptr", pfExportCallback   ; PFE_EXPORT_FUNC
    , "Ptr", pvCallbackContext   ; void* optional
    , "Ptr", pvContext   ; void*
    , "UInt")   ; return: DWORD

●ReadEncryptedFileRaw(pfExportCallback, pvCallbackContext, pvContext) = DLL("ADVAPI32.dll", "dword ReadEncryptedFileRaw(void*, void*, void*)")
# 呼び出し: ReadEncryptedFileRaw(pfExportCallback, pvCallbackContext, pvContext)
# pfExportCallback : PFE_EXPORT_FUNC -> "void*"
# pvCallbackContext : void* optional -> "void*"
# pvContext : void* -> "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)。