MsiEnumPatchesW

// msi.dll  (Unicode / -W)
#include <windows.h>

DWORD MsiEnumPatchesW(
    LPCWSTR szProduct,
    DWORD iPatchIndex,
    LPWSTR lpPatchBuf,
    LPWSTR lpTransformsBuf,
    DWORD* pcchTransformsBuf
);

<DllImport("msi.dll", CharSet:=CharSet.Unicode, ExactSpelling:=True)>
Public Shared Function MsiEnumPatchesW(
    <MarshalAs(UnmanagedType.LPWStr)> szProduct As String,   ' LPCWSTR
    iPatchIndex As UInteger,   ' DWORD
    <MarshalAs(UnmanagedType.LPWStr)> lpPatchBuf As System.Text.StringBuilder,   ' LPWSTR out
    <MarshalAs(UnmanagedType.LPWStr)> lpTransformsBuf As System.Text.StringBuilder,   ' LPWSTR out
    ByRef pcchTransformsBuf As UInteger   ' DWORD* in/out
) As UInteger
End Function

' szProduct : LPCWSTR
' iPatchIndex : DWORD
' lpPatchBuf : LPWSTR out
' lpTransformsBuf : LPWSTR out
' pcchTransformsBuf : DWORD* in/out
Declare PtrSafe Function MsiEnumPatchesW Lib "msi" ( _
    ByVal szProduct As LongPtr, _
    ByVal iPatchIndex As Long, _
    ByVal lpPatchBuf As LongPtr, _
    ByVal lpTransformsBuf As LongPtr, _
    ByRef pcchTransformsBuf As Long) As Long
' Unicode(W): 文字列は ByVal As LongPtr とし StrPtr(unicodeStr) を渡す
' VBA7前提(PtrSafe)。32bit Office では LongPtr→Long。Integer=16bit / Long=32bit / LongLong=64bit。

import ctypes
from ctypes import wintypes

MsiEnumPatchesW = ctypes.windll.msi.MsiEnumPatchesW
MsiEnumPatchesW.restype = wintypes.DWORD
MsiEnumPatchesW.argtypes = [
    wintypes.LPCWSTR,  # szProduct : LPCWSTR
    wintypes.DWORD,  # iPatchIndex : DWORD
    wintypes.LPWSTR,  # lpPatchBuf : LPWSTR out
    wintypes.LPWSTR,  # lpTransformsBuf : LPWSTR out
    ctypes.POINTER(wintypes.DWORD),  # pcchTransformsBuf : DWORD* in/out
]

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('msi.dll')
MsiEnumPatchesW = Fiddle::Function.new(
  lib['MsiEnumPatchesW'],
  [
    Fiddle::TYPE_VOIDP,  # szProduct : LPCWSTR
    -Fiddle::TYPE_INT,  # iPatchIndex : DWORD
    Fiddle::TYPE_VOIDP,  # lpPatchBuf : LPWSTR out
    Fiddle::TYPE_VOIDP,  # lpTransformsBuf : LPWSTR out
    Fiddle::TYPE_VOIDP,  # pcchTransformsBuf : DWORD* in/out
  ],
  -Fiddle::TYPE_INT)
# Wide strings: pass str.encode("UTF-16LE") + "\x00\x00"

#[link(name = "msi")]
extern "system" {
    fn MsiEnumPatchesW(
        szProduct: *const u16,  // LPCWSTR
        iPatchIndex: u32,  // DWORD
        lpPatchBuf: *mut u16,  // LPWSTR out
        lpTransformsBuf: *mut u16,  // LPWSTR out
        pcchTransformsBuf: *mut u32  // DWORD* in/out
    ) -> u32;
}
// crates: windows-sys provides ready-made bindings for this API.

$sig = @"
[DllImport("msi.dll", CharSet = CharSet.Unicode)]
public static extern uint MsiEnumPatchesW([MarshalAs(UnmanagedType.LPWStr)] string szProduct, uint iPatchIndex, [MarshalAs(UnmanagedType.LPWStr)] System.Text.StringBuilder lpPatchBuf, [MarshalAs(UnmanagedType.LPWStr)] System.Text.StringBuilder lpTransformsBuf, ref uint pcchTransformsBuf);
"@
$api = Add-Type -MemberDefinition $sig -Name 'msi_MsiEnumPatchesW' -Namespace Win32 -PassThru
# $api::MsiEnumPatchesW(szProduct, iPatchIndex, lpPatchBuf, lpTransformsBuf, pcchTransformsBuf)

#uselib "msi.dll"
#func global MsiEnumPatchesW "MsiEnumPatchesW" wptr, wptr, wptr, wptr, wptr
; MsiEnumPatchesW szProduct, iPatchIndex, varptr(lpPatchBuf), varptr(lpTransformsBuf), varptr(pcchTransformsBuf)   ; 戻り値は stat
; szProduct : LPCWSTR -> "wptr"
; iPatchIndex : DWORD -> "wptr"
; lpPatchBuf : LPWSTR out -> "wptr"
; lpTransformsBuf : LPWSTR out -> "wptr"
; pcchTransformsBuf : DWORD* in/out -> "wptr"
; ※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 (
	msi = windows.NewLazySystemDLL("msi.dll")
	procMsiEnumPatchesW = msi.NewProc("MsiEnumPatchesW")
)

// szProduct (LPCWSTR), iPatchIndex (DWORD), lpPatchBuf (LPWSTR out), lpTransformsBuf (LPWSTR out), pcchTransformsBuf (DWORD* in/out)
r1, _, err := procMsiEnumPatchesW.Call(
	uintptr(unsafe.Pointer(windows.StringToUTF16Ptr(szProduct))),
	uintptr(iPatchIndex),
	uintptr(lpPatchBuf),
	uintptr(lpTransformsBuf),
	uintptr(pcchTransformsBuf),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // DWORD

function MsiEnumPatchesW(
  szProduct: PWideChar;   // LPCWSTR
  iPatchIndex: DWORD;   // DWORD
  lpPatchBuf: PWideChar;   // LPWSTR out
  lpTransformsBuf: PWideChar;   // LPWSTR out
  pcchTransformsBuf: Pointer   // DWORD* in/out
): DWORD; stdcall;
  external 'msi.dll' name 'MsiEnumPatchesW';

result := DllCall("msi\MsiEnumPatchesW"
    , "WStr", szProduct   ; LPCWSTR
    , "UInt", iPatchIndex   ; DWORD
    , "Ptr", lpPatchBuf   ; LPWSTR out
    , "Ptr", lpTransformsBuf   ; LPWSTR out
    , "Ptr", pcchTransformsBuf   ; DWORD* in/out
    , "UInt")   ; return: DWORD

●MsiEnumPatchesW(szProduct, iPatchIndex, lpPatchBuf, lpTransformsBuf, pcchTransformsBuf) = DLL("msi.dll", "dword MsiEnumPatchesW(char*, dword, char*, char*, void*)")
# 呼び出し: MsiEnumPatchesW(szProduct, iPatchIndex, lpPatchBuf, lpTransformsBuf, pcchTransformsBuf)
# szProduct : LPCWSTR -> "char*"
# iPatchIndex : DWORD -> "dword"
# lpPatchBuf : LPWSTR out -> "char*"
# lpTransformsBuf : LPWSTR out -> "char*"
# pcchTransformsBuf : DWORD* in/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)。
# ※-W(Unicode)関数。なでしこ1はANSIのため -A 版の利用を推奨。

const std = @import("std");

extern "msi" fn MsiEnumPatchesW(
    szProduct: [*c]const u16, // LPCWSTR
    iPatchIndex: u32, // DWORD
    lpPatchBuf: [*c]u16, // LPWSTR out
    lpTransformsBuf: [*c]u16, // LPWSTR out
    pcchTransformsBuf: [*c]u32 // DWORD* in/out
) callconv(std.os.windows.WINAPI) u32;
// Unicode(-W): UTF-16LE のヌル終端バッファ([*c]const u16)を渡す。

proc MsiEnumPatchesW(
    szProduct: WideCString,  # LPCWSTR
    iPatchIndex: uint32,  # DWORD
    lpPatchBuf: ptr uint16,  # LPWSTR out
    lpTransformsBuf: ptr uint16,  # LPWSTR out
    pcchTransformsBuf: ptr uint32  # DWORD* in/out
): uint32 {.importc: "MsiEnumPatchesW", stdcall, dynlib: "msi.dll".}
# Unicode(-W): WideCString は newWideCString("...") で生成。

pragma(lib, "msi");
extern(Windows)
uint MsiEnumPatchesW(
    const(wchar)* szProduct,   // LPCWSTR
    uint iPatchIndex,   // DWORD
    wchar* lpPatchBuf,   // LPWSTR out
    wchar* lpTransformsBuf,   // LPWSTR out
    uint* pcchTransformsBuf   // DWORD* in/out
);

ccall((:MsiEnumPatchesW, "msi.dll"), stdcall, UInt32,
      (Cwstring, UInt32, Ptr{UInt16}, Ptr{UInt16}, Ptr{UInt32}),
      szProduct, iPatchIndex, lpPatchBuf, lpTransformsBuf, pcchTransformsBuf)
# szProduct : LPCWSTR -> Cwstring
# iPatchIndex : DWORD -> UInt32
# lpPatchBuf : LPWSTR out -> Ptr{UInt16}
# lpTransformsBuf : LPWSTR out -> Ptr{UInt16}
# pcchTransformsBuf : DWORD* in/out -> Ptr{UInt32}
# stdcall は 32bit のみ意味を持つ(x64 では無視)。
# Unicode(-W): Cwstring には transcode(UInt16, "...") 等で UTF-16 を渡す。

local ffi = require("ffi")
ffi.cdef[[
uint32_t MsiEnumPatchesW(
    const uint16_t* szProduct,
    uint32_t iPatchIndex,
    uint16_t* lpPatchBuf,
    uint16_t* lpTransformsBuf,
    uint32_t* pcchTransformsBuf);
]]
local msi = ffi.load("msi")
-- msi.MsiEnumPatchesW(szProduct, iPatchIndex, lpPatchBuf, lpTransformsBuf, pcchTransformsBuf)
-- szProduct : LPCWSTR
-- iPatchIndex : DWORD
-- lpPatchBuf : LPWSTR out
-- lpTransformsBuf : LPWSTR out
-- pcchTransformsBuf : DWORD* in/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。
-- Unicode(-W): uint16_t* には UTF-16LE のバッファ(ffi.new("uint16_t[?]", ...))を渡す。

const koffi = require('koffi');
const lib = koffi.load('msi.dll');
const MsiEnumPatchesW = lib.func('__stdcall', 'MsiEnumPatchesW', 'uint32_t', ['str16', 'uint32_t', 'uint16_t *', 'uint16_t *', 'uint32_t *']);
// MsiEnumPatchesW(szProduct, iPatchIndex, lpPatchBuf, lpTransformsBuf, pcchTransformsBuf)
// szProduct : LPCWSTR -> 'str16'
// iPatchIndex : DWORD -> 'uint32_t'
// lpPatchBuf : LPWSTR out -> 'uint16_t *'
// lpTransformsBuf : LPWSTR out -> 'uint16_t *'
// pcchTransformsBuf : DWORD* in/out -> 'uint32_t *'
// 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("msi.dll", {
  MsiEnumPatchesW: { parameters: ["buffer", "u32", "buffer", "buffer", "pointer"], result: "u32" },
});
// lib.symbols.MsiEnumPatchesW(szProduct, iPatchIndex, lpPatchBuf, lpTransformsBuf, pcchTransformsBuf)
// szProduct : LPCWSTR -> "buffer"
// iPatchIndex : DWORD -> "u32"
// lpPatchBuf : LPWSTR out -> "buffer"
// lpTransformsBuf : LPWSTR out -> "buffer"
// pcchTransformsBuf : DWORD* in/out -> "pointer"
// 文字列は "buffer"。Unicode(-W) は new TextEncoder() ではなく UTF-16LE のバイト列(末尾に \x00\x00)を Uint8Array で渡す。
// 値渡し構造体は { struct: [ ...field types... ] } を使用。

<?php
$ffi = FFI::cdef(<<<C
uint32_t MsiEnumPatchesW(
    const uint16_t* szProduct,
    uint32_t iPatchIndex,
    uint16_t* lpPatchBuf,
    uint16_t* lpTransformsBuf,
    uint32_t* pcchTransformsBuf);
C, "msi.dll");
// $ffi->MsiEnumPatchesW(szProduct, iPatchIndex, lpPatchBuf, lpTransformsBuf, pcchTransformsBuf);
// szProduct : LPCWSTR
// iPatchIndex : DWORD
// lpPatchBuf : LPWSTR out
// lpTransformsBuf : LPWSTR out
// pcchTransformsBuf : DWORD* in/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 Msi extends StdCallLibrary {
    Msi INSTANCE = Native.load("msi", Msi.class, W32APIOptions.UNICODE_OPTIONS);
    int MsiEnumPatchesW(
        WString szProduct,   // LPCWSTR
        int iPatchIndex,   // DWORD
        char[] lpPatchBuf,   // LPWSTR out
        char[] lpTransformsBuf,   // LPWSTR out
        IntByReference pcchTransformsBuf   // DWORD* in/out
    );
}
// Unicode(-W): WString(入力)/char[](出力)で UTF-16 をマーシャリング。

@[Link("msi")]
lib Libmsi
  fun MsiEnumPatchesW = MsiEnumPatchesW(
    szProduct : UInt16*,   # LPCWSTR
    iPatchIndex : UInt32,   # DWORD
    lpPatchBuf : UInt16*,   # LPWSTR out
    lpTransformsBuf : UInt16*,   # LPWSTR out
    pcchTransformsBuf : UInt32*   # DWORD* in/out
  ) : UInt32
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 MsiEnumPatchesWNative = Uint32 Function(Pointer<Utf16>, Uint32, Pointer<Utf16>, Pointer<Utf16>, Pointer<Uint32>);
typedef MsiEnumPatchesWDart = int Function(Pointer<Utf16>, int, Pointer<Utf16>, Pointer<Utf16>, Pointer<Uint32>);
final MsiEnumPatchesW = DynamicLibrary.open('msi.dll')
    .lookupFunction<MsiEnumPatchesWNative, MsiEnumPatchesWDart>('MsiEnumPatchesW');
// szProduct : LPCWSTR -> Pointer<Utf16>
// iPatchIndex : DWORD -> Uint32
// lpPatchBuf : LPWSTR out -> Pointer<Utf16>
// lpTransformsBuf : LPWSTR out -> Pointer<Utf16>
// pcchTransformsBuf : DWORD* in/out -> Pointer<Uint32>
// 文字列は package:ffi の "...".toNativeUtf16()/toNativeUtf8() で変換。

{$mode objfpc}{$H+}
function MsiEnumPatchesW(
  szProduct: PWideChar;   // LPCWSTR
  iPatchIndex: DWORD;   // DWORD
  lpPatchBuf: PWideChar;   // LPWSTR out
  lpTransformsBuf: PWideChar;   // LPWSTR out
  pcchTransformsBuf: Pointer   // DWORD* in/out
): DWORD; stdcall;
  external 'msi.dll' name 'MsiEnumPatchesW';

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

foreign import stdcall safe "MsiEnumPatchesW"
  c_MsiEnumPatchesW :: CWString -> Word32 -> CWString -> CWString -> Ptr Word32 -> IO Word32
-- szProduct : LPCWSTR -> CWString
-- iPatchIndex : DWORD -> Word32
-- lpPatchBuf : LPWSTR out -> CWString
-- lpTransformsBuf : LPWSTR out -> CWString
-- pcchTransformsBuf : DWORD* in/out -> Ptr Word32
-- 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。

open Ctypes
open Foreign

let msienumpatchesw =
  foreign "MsiEnumPatchesW"
    ((ptr uint16_t) @-> uint32_t @-> (ptr uint16_t) @-> (ptr uint16_t) @-> (ptr uint32_t) @-> returning uint32_t)
(* szProduct : LPCWSTR -> (ptr uint16_t) *)
(* iPatchIndex : DWORD -> uint32_t *)
(* lpPatchBuf : LPWSTR out -> (ptr uint16_t) *)
(* lpTransformsBuf : LPWSTR out -> (ptr uint16_t) *)
(* pcchTransformsBuf : DWORD* in/out -> (ptr uint32_t) *)
(* 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 msi (t "msi.dll"))
(cffi:use-foreign-library msi)

(cffi:defcfun ("MsiEnumPatchesW" msi-enum-patches-w :convention :stdcall) :uint32
  (sz-product (:string :encoding :utf-16le))   ; LPCWSTR
  (i-patch-index :uint32)   ; DWORD
  (lp-patch-buf :pointer)   ; LPWSTR out
  (lp-transforms-buf :pointer)   ; LPWSTR out
  (pcch-transforms-buf :pointer))   ; DWORD* in/out
; isize/usize(INT_PTR/SIZE_T)は x64 前提で :int64/:uint64。x86 では :int32/:uint32。

use Win32::API;
my $MsiEnumPatchesW = Win32::API::More->new('msi',
    'DWORD MsiEnumPatchesW(LPCWSTR szProduct, DWORD iPatchIndex, LPWSTR lpPatchBuf, LPWSTR lpTransformsBuf, LPVOID pcchTransformsBuf)');
# my $ret = $MsiEnumPatchesW->Call($szProduct, $iPatchIndex, $lpPatchBuf, $lpTransformsBuf, $pcchTransformsBuf);
# szProduct : LPCWSTR -> LPCWSTR
# iPatchIndex : DWORD -> DWORD
# lpPatchBuf : LPWSTR out -> LPWSTR
# lpTransformsBuf : LPWSTR out -> LPWSTR
# pcchTransformsBuf : DWORD* in/out -> LPVOID
# 値渡し構造体は pack() した文字列、または Win32::API::Struct を使用。
# Unicode(-W): LPCWSTR/LPWSTR は Win32::API が UTF-16 変換を行う。