CreateDeltaB

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

BOOL CreateDeltaB(
    LONGLONG FileTypeSet,
    LONGLONG SetFlags,
    LONGLONG ResetFlags,
    DELTA_INPUT Source,
    DELTA_INPUT Target,
    DELTA_INPUT SourceOptions,
    DELTA_INPUT TargetOptions,
    DELTA_INPUT GlobalOptions,
    const FILETIME* lpTargetFileTime,   // optional
    ALG_ID HashAlgId,
    DELTA_OUTPUT* lpDelta
);

<DllImport("msdelta.dll", ExactSpelling:=True)>
Public Shared Function CreateDeltaB(
    FileTypeSet As Long,   ' LONGLONG
    SetFlags As Long,   ' LONGLONG
    ResetFlags As Long,   ' LONGLONG
    Source As DELTA_INPUT,   ' DELTA_INPUT
    Target As DELTA_INPUT,   ' DELTA_INPUT
    SourceOptions As DELTA_INPUT,   ' DELTA_INPUT
    TargetOptions As DELTA_INPUT,   ' DELTA_INPUT
    GlobalOptions As DELTA_INPUT,   ' DELTA_INPUT
    lpTargetFileTime As IntPtr,   ' FILETIME* optional
    HashAlgId As UInteger,   ' ALG_ID
    lpDelta As IntPtr   ' DELTA_OUTPUT* out
) As <MarshalAs(UnmanagedType.Bool)> Boolean
End Function

' FileTypeSet : LONGLONG
' SetFlags : LONGLONG
' ResetFlags : LONGLONG
' Source : DELTA_INPUT
' Target : DELTA_INPUT
' SourceOptions : DELTA_INPUT
' TargetOptions : DELTA_INPUT
' GlobalOptions : DELTA_INPUT
' lpTargetFileTime : FILETIME* optional
' HashAlgId : ALG_ID
' lpDelta : DELTA_OUTPUT* out
Declare PtrSafe Function CreateDeltaB Lib "msdelta" ( _
    ByVal FileTypeSet As LongLong, _
    ByVal SetFlags As LongLong, _
    ByVal ResetFlags As LongLong, _
    ByVal Source As LongPtr, _
    ByVal Target As LongPtr, _
    ByVal SourceOptions As LongPtr, _
    ByVal TargetOptions As LongPtr, _
    ByVal GlobalOptions As LongPtr, _
    ByVal lpTargetFileTime As LongPtr, _
    ByVal HashAlgId As Long, _
    ByVal lpDelta 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

CreateDeltaB = ctypes.windll.msdelta.CreateDeltaB
CreateDeltaB.restype = wintypes.BOOL
CreateDeltaB.argtypes = [
    ctypes.c_longlong,  # FileTypeSet : LONGLONG
    ctypes.c_longlong,  # SetFlags : LONGLONG
    ctypes.c_longlong,  # ResetFlags : LONGLONG
    DELTA_INPUT,  # Source : DELTA_INPUT
    DELTA_INPUT,  # Target : DELTA_INPUT
    DELTA_INPUT,  # SourceOptions : DELTA_INPUT
    DELTA_INPUT,  # TargetOptions : DELTA_INPUT
    DELTA_INPUT,  # GlobalOptions : DELTA_INPUT
    ctypes.c_void_p,  # lpTargetFileTime : FILETIME* optional
    wintypes.DWORD,  # HashAlgId : ALG_ID
    ctypes.c_void_p,  # lpDelta : DELTA_OUTPUT* out
]

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('msdelta.dll')
CreateDeltaB = Fiddle::Function.new(
  lib['CreateDeltaB'],
  [
    Fiddle::TYPE_LONG_LONG,  # FileTypeSet : LONGLONG
    Fiddle::TYPE_LONG_LONG,  # SetFlags : LONGLONG
    Fiddle::TYPE_LONG_LONG,  # ResetFlags : LONGLONG
    Fiddle::TYPE_VOIDP,  # Source : DELTA_INPUT
    Fiddle::TYPE_VOIDP,  # Target : DELTA_INPUT
    Fiddle::TYPE_VOIDP,  # SourceOptions : DELTA_INPUT
    Fiddle::TYPE_VOIDP,  # TargetOptions : DELTA_INPUT
    Fiddle::TYPE_VOIDP,  # GlobalOptions : DELTA_INPUT
    Fiddle::TYPE_VOIDP,  # lpTargetFileTime : FILETIME* optional
    -Fiddle::TYPE_INT,  # HashAlgId : ALG_ID
    Fiddle::TYPE_VOIDP,  # lpDelta : DELTA_OUTPUT* out
  ],
  Fiddle::TYPE_INT)

#[link(name = "msdelta")]
extern "system" {
    fn CreateDeltaB(
        FileTypeSet: i64,  // LONGLONG
        SetFlags: i64,  // LONGLONG
        ResetFlags: i64,  // LONGLONG
        Source: DELTA_INPUT,  // DELTA_INPUT
        Target: DELTA_INPUT,  // DELTA_INPUT
        SourceOptions: DELTA_INPUT,  // DELTA_INPUT
        TargetOptions: DELTA_INPUT,  // DELTA_INPUT
        GlobalOptions: DELTA_INPUT,  // DELTA_INPUT
        lpTargetFileTime: *const FILETIME,  // FILETIME* optional
        HashAlgId: u32,  // ALG_ID
        lpDelta: *mut DELTA_OUTPUT  // DELTA_OUTPUT* out
    ) -> i32;
}
// crates: windows-sys provides ready-made bindings for this API.

$sig = @"
[return: MarshalAs(UnmanagedType.Bool)]
[DllImport("msdelta.dll")]
public static extern bool CreateDeltaB(long FileTypeSet, long SetFlags, long ResetFlags, DELTA_INPUT Source, DELTA_INPUT Target, DELTA_INPUT SourceOptions, DELTA_INPUT TargetOptions, DELTA_INPUT GlobalOptions, IntPtr lpTargetFileTime, uint HashAlgId, IntPtr lpDelta);
"@
$api = Add-Type -MemberDefinition $sig -Name 'msdelta_CreateDeltaB' -Namespace Win32 -PassThru
# $api::CreateDeltaB(FileTypeSet, SetFlags, ResetFlags, Source, Target, SourceOptions, TargetOptions, GlobalOptions, lpTargetFileTime, HashAlgId, lpDelta)

#uselib "msdelta.dll"
#func global CreateDeltaB "CreateDeltaB" sptr, sptr, sptr, sptr, sptr, sptr, sptr, sptr, sptr, sptr, sptr
; CreateDeltaB FileTypeSet, SetFlags, ResetFlags, Source, Target, SourceOptions, TargetOptions, GlobalOptions, varptr(lpTargetFileTime), HashAlgId, varptr(lpDelta)   ; 戻り値は stat
; FileTypeSet : LONGLONG -> "sptr"
; SetFlags : LONGLONG -> "sptr"
; ResetFlags : LONGLONG -> "sptr"
; Source : DELTA_INPUT -> "sptr"
; Target : DELTA_INPUT -> "sptr"
; SourceOptions : DELTA_INPUT -> "sptr"
; TargetOptions : DELTA_INPUT -> "sptr"
; GlobalOptions : DELTA_INPUT -> "sptr"
; lpTargetFileTime : FILETIME* optional -> "sptr"
; HashAlgId : ALG_ID -> "sptr"
; lpDelta : DELTA_OUTPUT* out -> "sptr"
; ※値渡し構造体は直接渡せません。intにパック、または var で構造体変数を渡してください。
; ※HSP3.7は int64 引数(64bit値渡し)に非対応です。
; ※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。

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

var (
	msdelta = windows.NewLazySystemDLL("msdelta.dll")
	procCreateDeltaB = msdelta.NewProc("CreateDeltaB")
)

// FileTypeSet (LONGLONG), SetFlags (LONGLONG), ResetFlags (LONGLONG), Source (DELTA_INPUT), Target (DELTA_INPUT), SourceOptions (DELTA_INPUT), TargetOptions (DELTA_INPUT), GlobalOptions (DELTA_INPUT), lpTargetFileTime (FILETIME* optional), HashAlgId (ALG_ID), lpDelta (DELTA_OUTPUT* out)
r1, _, err := procCreateDeltaB.Call(
	uintptr(FileTypeSet),
	uintptr(SetFlags),
	uintptr(ResetFlags),
	uintptr(Source),
	uintptr(Target),
	uintptr(SourceOptions),
	uintptr(TargetOptions),
	uintptr(GlobalOptions),
	uintptr(lpTargetFileTime),
	uintptr(HashAlgId),
	uintptr(lpDelta),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // BOOL

function CreateDeltaB(
  FileTypeSet: Int64;   // LONGLONG
  SetFlags: Int64;   // LONGLONG
  ResetFlags: Int64;   // LONGLONG
  Source: DELTA_INPUT;   // DELTA_INPUT
  Target: DELTA_INPUT;   // DELTA_INPUT
  SourceOptions: DELTA_INPUT;   // DELTA_INPUT
  TargetOptions: DELTA_INPUT;   // DELTA_INPUT
  GlobalOptions: DELTA_INPUT;   // DELTA_INPUT
  lpTargetFileTime: Pointer;   // FILETIME* optional
  HashAlgId: DWORD;   // ALG_ID
  lpDelta: Pointer   // DELTA_OUTPUT* out
): BOOL; stdcall;
  external 'msdelta.dll' name 'CreateDeltaB';

result := DllCall("msdelta\CreateDeltaB"
    , "Int64", FileTypeSet   ; LONGLONG
    , "Int64", SetFlags   ; LONGLONG
    , "Int64", ResetFlags   ; LONGLONG
    , "Ptr", Source   ; DELTA_INPUT
    , "Ptr", Target   ; DELTA_INPUT
    , "Ptr", SourceOptions   ; DELTA_INPUT
    , "Ptr", TargetOptions   ; DELTA_INPUT
    , "Ptr", GlobalOptions   ; DELTA_INPUT
    , "Ptr", lpTargetFileTime   ; FILETIME* optional
    , "UInt", HashAlgId   ; ALG_ID
    , "Ptr", lpDelta   ; DELTA_OUTPUT* out
    , "Int")   ; return: BOOL

●CreateDeltaB(FileTypeSet, SetFlags, ResetFlags, Source, Target, SourceOptions, TargetOptions, GlobalOptions, lpTargetFileTime, HashAlgId, lpDelta) = DLL("msdelta.dll", "bool CreateDeltaB(int64, int64, int64, void*, void*, void*, void*, void*, void*, dword, void*)")
# 呼び出し: CreateDeltaB(FileTypeSet, SetFlags, ResetFlags, Source, Target, SourceOptions, TargetOptions, GlobalOptions, lpTargetFileTime, HashAlgId, lpDelta)
# FileTypeSet : LONGLONG -> "int64"
# SetFlags : LONGLONG -> "int64"
# ResetFlags : LONGLONG -> "int64"
# Source : DELTA_INPUT -> "void*"
# Target : DELTA_INPUT -> "void*"
# SourceOptions : DELTA_INPUT -> "void*"
# TargetOptions : DELTA_INPUT -> "void*"
# GlobalOptions : DELTA_INPUT -> "void*"
# lpTargetFileTime : FILETIME* optional -> "void*"
# HashAlgId : ALG_ID -> "dword"
# lpDelta : DELTA_OUTPUT* 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)。

const std = @import("std");

extern "msdelta" fn CreateDeltaB(
    FileTypeSet: i64, // LONGLONG
    SetFlags: i64, // LONGLONG
    ResetFlags: i64, // LONGLONG
    Source: DELTA_INPUT, // DELTA_INPUT
    Target: DELTA_INPUT, // DELTA_INPUT
    SourceOptions: DELTA_INPUT, // DELTA_INPUT
    TargetOptions: DELTA_INPUT, // DELTA_INPUT
    GlobalOptions: DELTA_INPUT, // DELTA_INPUT
    lpTargetFileTime: [*c]FILETIME, // FILETIME* optional
    HashAlgId: u32, // ALG_ID
    lpDelta: [*c]DELTA_OUTPUT // DELTA_OUTPUT* out
) callconv(std.os.windows.WINAPI) i32;

proc CreateDeltaB(
    FileTypeSet: int64,  # LONGLONG
    SetFlags: int64,  # LONGLONG
    ResetFlags: int64,  # LONGLONG
    Source: DELTA_INPUT,  # DELTA_INPUT
    Target: DELTA_INPUT,  # DELTA_INPUT
    SourceOptions: DELTA_INPUT,  # DELTA_INPUT
    TargetOptions: DELTA_INPUT,  # DELTA_INPUT
    GlobalOptions: DELTA_INPUT,  # DELTA_INPUT
    lpTargetFileTime: ptr FILETIME,  # FILETIME* optional
    HashAlgId: uint32,  # ALG_ID
    lpDelta: ptr DELTA_OUTPUT  # DELTA_OUTPUT* out
): int32 {.importc: "CreateDeltaB", stdcall, dynlib: "msdelta.dll".}

pragma(lib, "msdelta");
extern(Windows)
int CreateDeltaB(
    long FileTypeSet,   // LONGLONG
    long SetFlags,   // LONGLONG
    long ResetFlags,   // LONGLONG
    DELTA_INPUT Source,   // DELTA_INPUT
    DELTA_INPUT Target,   // DELTA_INPUT
    DELTA_INPUT SourceOptions,   // DELTA_INPUT
    DELTA_INPUT TargetOptions,   // DELTA_INPUT
    DELTA_INPUT GlobalOptions,   // DELTA_INPUT
    FILETIME* lpTargetFileTime,   // FILETIME* optional
    uint HashAlgId,   // ALG_ID
    DELTA_OUTPUT* lpDelta   // DELTA_OUTPUT* out
);

ccall((:CreateDeltaB, "msdelta.dll"), stdcall, Int32,
      (Int64, Int64, Int64, DELTA_INPUT, DELTA_INPUT, DELTA_INPUT, DELTA_INPUT, DELTA_INPUT, Ptr{FILETIME}, UInt32, Ptr{DELTA_OUTPUT}),
      FileTypeSet, SetFlags, ResetFlags, Source, Target, SourceOptions, TargetOptions, GlobalOptions, lpTargetFileTime, HashAlgId, lpDelta)
# FileTypeSet : LONGLONG -> Int64
# SetFlags : LONGLONG -> Int64
# ResetFlags : LONGLONG -> Int64
# Source : DELTA_INPUT -> DELTA_INPUT
# Target : DELTA_INPUT -> DELTA_INPUT
# SourceOptions : DELTA_INPUT -> DELTA_INPUT
# TargetOptions : DELTA_INPUT -> DELTA_INPUT
# GlobalOptions : DELTA_INPUT -> DELTA_INPUT
# lpTargetFileTime : FILETIME* optional -> Ptr{FILETIME}
# HashAlgId : ALG_ID -> UInt32
# lpDelta : DELTA_OUTPUT* out -> Ptr{DELTA_OUTPUT}
# stdcall は 32bit のみ意味を持つ(x64 では無視)。

local ffi = require("ffi")
ffi.cdef[[
int32_t CreateDeltaB(
    int64_t FileTypeSet,
    int64_t SetFlags,
    int64_t ResetFlags,
    DELTA_INPUT Source,
    DELTA_INPUT Target,
    DELTA_INPUT SourceOptions,
    DELTA_INPUT TargetOptions,
    DELTA_INPUT GlobalOptions,
    void* lpTargetFileTime,
    uint32_t HashAlgId,
    void* lpDelta);
]]
local msdelta = ffi.load("msdelta")
-- msdelta.CreateDeltaB(FileTypeSet, SetFlags, ResetFlags, Source, Target, SourceOptions, TargetOptions, GlobalOptions, lpTargetFileTime, HashAlgId, lpDelta)
-- FileTypeSet : LONGLONG
-- SetFlags : LONGLONG
-- ResetFlags : LONGLONG
-- Source : DELTA_INPUT
-- Target : DELTA_INPUT
-- SourceOptions : DELTA_INPUT
-- TargetOptions : DELTA_INPUT
-- GlobalOptions : DELTA_INPUT
-- lpTargetFileTime : FILETIME* optional
-- HashAlgId : ALG_ID
-- lpDelta : DELTA_OUTPUT* out
-- 構造体/GUIDへのポインタは cdef が通るよう void* で表記(実型は各引数コメント参照)。値渡し構造体・enum は対応する typedef を cdef に追加すること。

const koffi = require('koffi');
const lib = koffi.load('msdelta.dll');
const CreateDeltaB = lib.func('__stdcall', 'CreateDeltaB', 'int32_t', ['int64_t', 'int64_t', 'int64_t', 'DELTA_INPUT', 'DELTA_INPUT', 'DELTA_INPUT', 'DELTA_INPUT', 'DELTA_INPUT', 'void *', 'uint32_t', 'void *']);
// CreateDeltaB(FileTypeSet, SetFlags, ResetFlags, Source, Target, SourceOptions, TargetOptions, GlobalOptions, lpTargetFileTime, HashAlgId, lpDelta)
// FileTypeSet : LONGLONG -> 'int64_t'
// SetFlags : LONGLONG -> 'int64_t'
// ResetFlags : LONGLONG -> 'int64_t'
// Source : DELTA_INPUT -> 'DELTA_INPUT'
// Target : DELTA_INPUT -> 'DELTA_INPUT'
// SourceOptions : DELTA_INPUT -> 'DELTA_INPUT'
// TargetOptions : DELTA_INPUT -> 'DELTA_INPUT'
// GlobalOptions : DELTA_INPUT -> 'DELTA_INPUT'
// lpTargetFileTime : FILETIME* optional -> 'void *'
// HashAlgId : ALG_ID -> 'uint32_t'
// lpDelta : DELTA_OUTPUT* out -> 'void *'
// 出力ポインタは koffi.out(...) で包む。構造体は koffi.struct で定義。

const lib = Deno.dlopen("msdelta.dll", {
  CreateDeltaB: { parameters: ["i64", "i64", "i64", "buffer", "buffer", "buffer", "buffer", "buffer", "pointer", "u32", "pointer"], result: "i32" },
});
// lib.symbols.CreateDeltaB(FileTypeSet, SetFlags, ResetFlags, Source, Target, SourceOptions, TargetOptions, GlobalOptions, lpTargetFileTime, HashAlgId, lpDelta)
// FileTypeSet : LONGLONG -> "i64"
// SetFlags : LONGLONG -> "i64"
// ResetFlags : LONGLONG -> "i64"
// Source : DELTA_INPUT -> "buffer"
// Target : DELTA_INPUT -> "buffer"
// SourceOptions : DELTA_INPUT -> "buffer"
// TargetOptions : DELTA_INPUT -> "buffer"
// GlobalOptions : DELTA_INPUT -> "buffer"
// lpTargetFileTime : FILETIME* optional -> "pointer"
// HashAlgId : ALG_ID -> "u32"
// lpDelta : DELTA_OUTPUT* out -> "pointer"
// 文字列引数は "buffer"(NUL 終端のバイト列を Uint8Array で渡す)。
// 値渡し構造体は { struct: [ ...field types... ] } を使用。

<?php
$ffi = FFI::cdef(<<<C
int32_t CreateDeltaB(
    int64_t FileTypeSet,
    int64_t SetFlags,
    int64_t ResetFlags,
    DELTA_INPUT Source,
    DELTA_INPUT Target,
    DELTA_INPUT SourceOptions,
    DELTA_INPUT TargetOptions,
    DELTA_INPUT GlobalOptions,
    void* lpTargetFileTime,
    uint32_t HashAlgId,
    void* lpDelta);
C, "msdelta.dll");
// $ffi->CreateDeltaB(FileTypeSet, SetFlags, ResetFlags, Source, Target, SourceOptions, TargetOptions, GlobalOptions, lpTargetFileTime, HashAlgId, lpDelta);
// FileTypeSet : LONGLONG
// SetFlags : LONGLONG
// ResetFlags : LONGLONG
// Source : DELTA_INPUT
// Target : DELTA_INPUT
// SourceOptions : DELTA_INPUT
// TargetOptions : DELTA_INPUT
// GlobalOptions : DELTA_INPUT
// lpTargetFileTime : FILETIME* optional
// HashAlgId : ALG_ID
// lpDelta : DELTA_OUTPUT* out
// 構造体/GUIDへのポインタは cdef が通るよう void* で表記(実型は各引数コメント参照)。値渡し構造体・enum は対応する typedef を cdef に追加すること。
// WINAPI(stdcall): x64 では呼出規約が統一されるため問題なし。x86 では __stdcall 対応のラッパが必要な場合あり。

import com.sun.jna.*;
import com.sun.jna.ptr.*;
import com.sun.jna.win32.StdCallLibrary;
import com.sun.jna.win32.W32APIOptions;

public interface Msdelta extends StdCallLibrary {
    Msdelta INSTANCE = Native.load("msdelta", Msdelta.class);
    boolean CreateDeltaB(
        long FileTypeSet,   // LONGLONG
        long SetFlags,   // LONGLONG
        long ResetFlags,   // LONGLONG
        DELTA_INPUT /* extends Structure (by value) */ Source,   // DELTA_INPUT
        DELTA_INPUT /* extends Structure (by value) */ Target,   // DELTA_INPUT
        DELTA_INPUT /* extends Structure (by value) */ SourceOptions,   // DELTA_INPUT
        DELTA_INPUT /* extends Structure (by value) */ TargetOptions,   // DELTA_INPUT
        DELTA_INPUT /* extends Structure (by value) */ GlobalOptions,   // DELTA_INPUT
        Pointer lpTargetFileTime,   // FILETIME* optional
        int HashAlgId,   // ALG_ID
        Pointer lpDelta   // DELTA_OUTPUT* out
    );
}

@[Link("msdelta")]
lib Libmsdelta
  fun CreateDeltaB = CreateDeltaB(
    FileTypeSet : Int64,   # LONGLONG
    SetFlags : Int64,   # LONGLONG
    ResetFlags : Int64,   # LONGLONG
    Source : DELTA_INPUT,   # DELTA_INPUT
    Target : DELTA_INPUT,   # DELTA_INPUT
    SourceOptions : DELTA_INPUT,   # DELTA_INPUT
    TargetOptions : DELTA_INPUT,   # DELTA_INPUT
    GlobalOptions : DELTA_INPUT,   # DELTA_INPUT
    lpTargetFileTime : FILETIME*,   # FILETIME* optional
    HashAlgId : UInt32,   # ALG_ID
    lpDelta : DELTA_OUTPUT*   # DELTA_OUTPUT* out
  ) : Int32
end
# 構造体/GUID/enum は lib 内に対応する型定義が必要。
# 呼出規約: x64 は規約統一のため OK。x86(32bit)は WINAPI=stdcall だが Crystal の fun に stdcall 付与構文がなく非対応。

import 'dart:ffi';
import 'package:ffi/ffi.dart';

typedef CreateDeltaBNative = Int32 Function(Int64, Int64, Int64, DELTA_INPUT, DELTA_INPUT, DELTA_INPUT, DELTA_INPUT, DELTA_INPUT, Pointer<Void>, Uint32, Pointer<Void>);
typedef CreateDeltaBDart = int Function(int, int, int, int, int, int, int, int, Pointer<Void>, int, Pointer<Void>);
final CreateDeltaB = DynamicLibrary.open('msdelta.dll')
    .lookupFunction<CreateDeltaBNative, CreateDeltaBDart>('CreateDeltaB');
// FileTypeSet : LONGLONG -> Int64
// SetFlags : LONGLONG -> Int64
// ResetFlags : LONGLONG -> Int64
// Source : DELTA_INPUT -> DELTA_INPUT
// Target : DELTA_INPUT -> DELTA_INPUT
// SourceOptions : DELTA_INPUT -> DELTA_INPUT
// TargetOptions : DELTA_INPUT -> DELTA_INPUT
// GlobalOptions : DELTA_INPUT -> DELTA_INPUT
// lpTargetFileTime : FILETIME* optional -> Pointer<Void>
// HashAlgId : ALG_ID -> Uint32
// lpDelta : DELTA_OUTPUT* out -> Pointer<Void>
// 文字列は package:ffi の "...".toNativeUtf16()/toNativeUtf8() で変換。

{$mode objfpc}{$H+}
function CreateDeltaB(
  FileTypeSet: Int64;   // LONGLONG
  SetFlags: Int64;   // LONGLONG
  ResetFlags: Int64;   // LONGLONG
  Source: DELTA_INPUT;   // DELTA_INPUT
  Target: DELTA_INPUT;   // DELTA_INPUT
  SourceOptions: DELTA_INPUT;   // DELTA_INPUT
  TargetOptions: DELTA_INPUT;   // DELTA_INPUT
  GlobalOptions: DELTA_INPUT;   // DELTA_INPUT
  lpTargetFileTime: Pointer;   // FILETIME* optional
  HashAlgId: DWORD;   // ALG_ID
  lpDelta: Pointer   // DELTA_OUTPUT* out
): BOOL; stdcall;
  external 'msdelta.dll' name 'CreateDeltaB';

import Foreign
import Foreign.C.Types
import Foreign.C.String

foreign import stdcall safe "CreateDeltaB"
  c_CreateDeltaB :: Int64 -> Int64 -> Int64 -> DELTA_INPUT -> DELTA_INPUT -> DELTA_INPUT -> DELTA_INPUT -> DELTA_INPUT -> Ptr () -> Word32 -> Ptr () -> IO CInt
-- FileTypeSet : LONGLONG -> Int64
-- SetFlags : LONGLONG -> Int64
-- ResetFlags : LONGLONG -> Int64
-- Source : DELTA_INPUT -> DELTA_INPUT
-- Target : DELTA_INPUT -> DELTA_INPUT
-- SourceOptions : DELTA_INPUT -> DELTA_INPUT
-- TargetOptions : DELTA_INPUT -> DELTA_INPUT
-- GlobalOptions : DELTA_INPUT -> DELTA_INPUT
-- lpTargetFileTime : FILETIME* optional -> Ptr ()
-- HashAlgId : ALG_ID -> Word32
-- lpDelta : DELTA_OUTPUT* out -> Ptr ()
-- 要 GHC(Windows)。stdcall は x64 では ccall として扱われる。ブロックする API は safe 呼び出し推奨。
-- ※値渡し構造体は GHC FFI で直接渡せません。Ptr で渡すラッパ(C側)経由にしてください。

open Ctypes
open Foreign

let createdeltab =
  foreign "CreateDeltaB"
    (int64_t @-> int64_t @-> int64_t @-> DELTA_INPUT @-> DELTA_INPUT @-> DELTA_INPUT @-> DELTA_INPUT @-> DELTA_INPUT @-> (ptr void) @-> uint32_t @-> (ptr void) @-> returning int32_t)
(* FileTypeSet : LONGLONG -> int64_t *)
(* SetFlags : LONGLONG -> int64_t *)
(* ResetFlags : LONGLONG -> int64_t *)
(* Source : DELTA_INPUT -> DELTA_INPUT *)
(* Target : DELTA_INPUT -> DELTA_INPUT *)
(* SourceOptions : DELTA_INPUT -> DELTA_INPUT *)
(* TargetOptions : DELTA_INPUT -> DELTA_INPUT *)
(* GlobalOptions : DELTA_INPUT -> DELTA_INPUT *)
(* lpTargetFileTime : FILETIME* optional -> (ptr void) *)
(* HashAlgId : ALG_ID -> uint32_t *)
(* lpDelta : DELTA_OUTPUT* out -> (ptr void) *)
(* foreign は cdecl 前提。x64 Windows では WINAPI と一致。構造体は ctypes structure を定義のこと。 *)

(cffi:define-foreign-library msdelta (t "msdelta.dll"))
(cffi:use-foreign-library msdelta)

(cffi:defcfun ("CreateDeltaB" create-delta-b :convention :stdcall) :int32
  (file-type-set :int64)   ; LONGLONG
  (set-flags :int64)   ; LONGLONG
  (reset-flags :int64)   ; LONGLONG
  (source (:struct delta-input))   ; DELTA_INPUT
  (target (:struct delta-input))   ; DELTA_INPUT
  (source-options (:struct delta-input))   ; DELTA_INPUT
  (target-options (:struct delta-input))   ; DELTA_INPUT
  (global-options (:struct delta-input))   ; DELTA_INPUT
  (lp-target-file-time :pointer)   ; FILETIME* optional
  (hash-alg-id :uint32)   ; ALG_ID
  (lp-delta :pointer))   ; DELTA_OUTPUT* out
; isize/usize(INT_PTR/SIZE_T)は x64 前提で :int64/:uint64。x86 では :int32/:uint32。

use Win32::API;
my $CreateDeltaB = Win32::API::More->new('msdelta',
    'BOOL CreateDeltaB(INT64 FileTypeSet, INT64 SetFlags, INT64 ResetFlags, LPVOID Source, LPVOID Target, LPVOID SourceOptions, LPVOID TargetOptions, LPVOID GlobalOptions, LPVOID lpTargetFileTime, DWORD HashAlgId, LPVOID lpDelta)');
# my $ret = $CreateDeltaB->Call($FileTypeSet, $SetFlags, $ResetFlags, $Source, $Target, $SourceOptions, $TargetOptions, $GlobalOptions, $lpTargetFileTime, $HashAlgId, $lpDelta);
# FileTypeSet : LONGLONG -> INT64
# SetFlags : LONGLONG -> INT64
# ResetFlags : LONGLONG -> INT64
# Source : DELTA_INPUT -> LPVOID
# Target : DELTA_INPUT -> LPVOID
# SourceOptions : DELTA_INPUT -> LPVOID
# TargetOptions : DELTA_INPUT -> LPVOID
# GlobalOptions : DELTA_INPUT -> LPVOID
# lpTargetFileTime : FILETIME* optional -> LPVOID
# HashAlgId : ALG_ID -> DWORD
# lpDelta : DELTA_OUTPUT* out -> LPVOID
# 値渡し構造体は pack() した文字列、または Win32::API::Struct を使用。