MsiEnumPatchesExA

// msi.dll  (ANSI / -A)
#include <windows.h>

DWORD MsiEnumPatchesExA(
    LPCSTR szProductCode,   // optional
    LPCSTR szUserSid,   // optional
    DWORD dwContext,
    DWORD dwFilter,
    DWORD dwIndex,
    LPSTR szPatchCode,   // optional
    LPSTR szTargetProductCode,   // optional
    MSIINSTALLCONTEXT* pdwTargetProductContext,   // optional
    LPSTR szTargetUserSid,   // optional
    DWORD* pcchTargetUserSid   // optional
);

<DllImport("msi.dll", CharSet:=CharSet.Ansi, ExactSpelling:=True)>
Public Shared Function MsiEnumPatchesExA(
    <MarshalAs(UnmanagedType.LPStr)> szProductCode As String,   ' LPCSTR optional
    <MarshalAs(UnmanagedType.LPStr)> szUserSid As String,   ' LPCSTR optional
    dwContext As UInteger,   ' DWORD
    dwFilter As UInteger,   ' DWORD
    dwIndex As UInteger,   ' DWORD
    <MarshalAs(UnmanagedType.LPStr)> szPatchCode As System.Text.StringBuilder,   ' LPSTR optional, out
    <MarshalAs(UnmanagedType.LPStr)> szTargetProductCode As System.Text.StringBuilder,   ' LPSTR optional, out
    pdwTargetProductContext As IntPtr,   ' MSIINSTALLCONTEXT* optional, out
    <MarshalAs(UnmanagedType.LPStr)> szTargetUserSid As System.Text.StringBuilder,   ' LPSTR optional, out
    pcchTargetUserSid As IntPtr   ' DWORD* optional, in/out
) As UInteger
End Function

' szProductCode : LPCSTR optional
' szUserSid : LPCSTR optional
' dwContext : DWORD
' dwFilter : DWORD
' dwIndex : DWORD
' szPatchCode : LPSTR optional, out
' szTargetProductCode : LPSTR optional, out
' pdwTargetProductContext : MSIINSTALLCONTEXT* optional, out
' szTargetUserSid : LPSTR optional, out
' pcchTargetUserSid : DWORD* optional, in/out
Declare PtrSafe Function MsiEnumPatchesExA Lib "msi" ( _
    ByVal szProductCode As String, _
    ByVal szUserSid As String, _
    ByVal dwContext As Long, _
    ByVal dwFilter As Long, _
    ByVal dwIndex As Long, _
    ByVal szPatchCode As String, _
    ByVal szTargetProductCode As String, _
    ByVal pdwTargetProductContext As LongPtr, _
    ByVal szTargetUserSid As String, _
    ByVal pcchTargetUserSid 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

MsiEnumPatchesExA = ctypes.windll.msi.MsiEnumPatchesExA
MsiEnumPatchesExA.restype = wintypes.DWORD
MsiEnumPatchesExA.argtypes = [
    wintypes.LPCSTR,  # szProductCode : LPCSTR optional
    wintypes.LPCSTR,  # szUserSid : LPCSTR optional
    wintypes.DWORD,  # dwContext : DWORD
    wintypes.DWORD,  # dwFilter : DWORD
    wintypes.DWORD,  # dwIndex : DWORD
    wintypes.LPSTR,  # szPatchCode : LPSTR optional, out
    wintypes.LPSTR,  # szTargetProductCode : LPSTR optional, out
    ctypes.c_void_p,  # pdwTargetProductContext : MSIINSTALLCONTEXT* optional, out
    wintypes.LPSTR,  # szTargetUserSid : LPSTR optional, out
    ctypes.POINTER(wintypes.DWORD),  # pcchTargetUserSid : DWORD* optional, in/out
]

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('msi.dll')
MsiEnumPatchesExA = Fiddle::Function.new(
  lib['MsiEnumPatchesExA'],
  [
    Fiddle::TYPE_VOIDP,  # szProductCode : LPCSTR optional
    Fiddle::TYPE_VOIDP,  # szUserSid : LPCSTR optional
    -Fiddle::TYPE_INT,  # dwContext : DWORD
    -Fiddle::TYPE_INT,  # dwFilter : DWORD
    -Fiddle::TYPE_INT,  # dwIndex : DWORD
    Fiddle::TYPE_VOIDP,  # szPatchCode : LPSTR optional, out
    Fiddle::TYPE_VOIDP,  # szTargetProductCode : LPSTR optional, out
    Fiddle::TYPE_VOIDP,  # pdwTargetProductContext : MSIINSTALLCONTEXT* optional, out
    Fiddle::TYPE_VOIDP,  # szTargetUserSid : LPSTR optional, out
    Fiddle::TYPE_VOIDP,  # pcchTargetUserSid : DWORD* optional, in/out
  ],
  -Fiddle::TYPE_INT)

#[link(name = "msi")]
extern "system" {
    fn MsiEnumPatchesExA(
        szProductCode: *const u8,  // LPCSTR optional
        szUserSid: *const u8,  // LPCSTR optional
        dwContext: u32,  // DWORD
        dwFilter: u32,  // DWORD
        dwIndex: u32,  // DWORD
        szPatchCode: *mut u8,  // LPSTR optional, out
        szTargetProductCode: *mut u8,  // LPSTR optional, out
        pdwTargetProductContext: *mut i32,  // MSIINSTALLCONTEXT* optional, out
        szTargetUserSid: *mut u8,  // LPSTR optional, out
        pcchTargetUserSid: *mut u32  // DWORD* optional, in/out
    ) -> u32;
}
// crates: windows-sys provides ready-made bindings for this API.

$sig = @"
[DllImport("msi.dll", CharSet = CharSet.Ansi)]
public static extern uint MsiEnumPatchesExA([MarshalAs(UnmanagedType.LPStr)] string szProductCode, [MarshalAs(UnmanagedType.LPStr)] string szUserSid, uint dwContext, uint dwFilter, uint dwIndex, [MarshalAs(UnmanagedType.LPStr)] System.Text.StringBuilder szPatchCode, [MarshalAs(UnmanagedType.LPStr)] System.Text.StringBuilder szTargetProductCode, IntPtr pdwTargetProductContext, [MarshalAs(UnmanagedType.LPStr)] System.Text.StringBuilder szTargetUserSid, IntPtr pcchTargetUserSid);
"@
$api = Add-Type -MemberDefinition $sig -Name 'msi_MsiEnumPatchesExA' -Namespace Win32 -PassThru
# $api::MsiEnumPatchesExA(szProductCode, szUserSid, dwContext, dwFilter, dwIndex, szPatchCode, szTargetProductCode, pdwTargetProductContext, szTargetUserSid, pcchTargetUserSid)

#uselib "msi.dll"
#func global MsiEnumPatchesExA "MsiEnumPatchesExA" sptr, sptr, sptr, sptr, sptr, sptr, sptr, sptr, sptr, sptr
; MsiEnumPatchesExA szProductCode, szUserSid, dwContext, dwFilter, dwIndex, varptr(szPatchCode), varptr(szTargetProductCode), varptr(pdwTargetProductContext), varptr(szTargetUserSid), varptr(pcchTargetUserSid)   ; 戻り値は stat
; szProductCode : LPCSTR optional -> "sptr"
; szUserSid : LPCSTR optional -> "sptr"
; dwContext : DWORD -> "sptr"
; dwFilter : DWORD -> "sptr"
; dwIndex : DWORD -> "sptr"
; szPatchCode : LPSTR optional, out -> "sptr"
; szTargetProductCode : LPSTR optional, out -> "sptr"
; pdwTargetProductContext : MSIINSTALLCONTEXT* optional, out -> "sptr"
; szTargetUserSid : LPSTR optional, out -> "sptr"
; pcchTargetUserSid : DWORD* optional, in/out -> "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。

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

var (
	msi = windows.NewLazySystemDLL("msi.dll")
	procMsiEnumPatchesExA = msi.NewProc("MsiEnumPatchesExA")
)

// szProductCode (LPCSTR optional), szUserSid (LPCSTR optional), dwContext (DWORD), dwFilter (DWORD), dwIndex (DWORD), szPatchCode (LPSTR optional, out), szTargetProductCode (LPSTR optional, out), pdwTargetProductContext (MSIINSTALLCONTEXT* optional, out), szTargetUserSid (LPSTR optional, out), pcchTargetUserSid (DWORD* optional, in/out)
r1, _, err := procMsiEnumPatchesExA.Call(
	uintptr(unsafe.Pointer(windows.BytePtrFromString(szProductCode))),
	uintptr(unsafe.Pointer(windows.BytePtrFromString(szUserSid))),
	uintptr(dwContext),
	uintptr(dwFilter),
	uintptr(dwIndex),
	uintptr(szPatchCode),
	uintptr(szTargetProductCode),
	uintptr(pdwTargetProductContext),
	uintptr(szTargetUserSid),
	uintptr(pcchTargetUserSid),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // DWORD

function MsiEnumPatchesExA(
  szProductCode: PAnsiChar;   // LPCSTR optional
  szUserSid: PAnsiChar;   // LPCSTR optional
  dwContext: DWORD;   // DWORD
  dwFilter: DWORD;   // DWORD
  dwIndex: DWORD;   // DWORD
  szPatchCode: PAnsiChar;   // LPSTR optional, out
  szTargetProductCode: PAnsiChar;   // LPSTR optional, out
  pdwTargetProductContext: Pointer;   // MSIINSTALLCONTEXT* optional, out
  szTargetUserSid: PAnsiChar;   // LPSTR optional, out
  pcchTargetUserSid: Pointer   // DWORD* optional, in/out
): DWORD; stdcall;
  external 'msi.dll' name 'MsiEnumPatchesExA';

result := DllCall("msi\MsiEnumPatchesExA"
    , "AStr", szProductCode   ; LPCSTR optional
    , "AStr", szUserSid   ; LPCSTR optional
    , "UInt", dwContext   ; DWORD
    , "UInt", dwFilter   ; DWORD
    , "UInt", dwIndex   ; DWORD
    , "Ptr", szPatchCode   ; LPSTR optional, out
    , "Ptr", szTargetProductCode   ; LPSTR optional, out
    , "Ptr", pdwTargetProductContext   ; MSIINSTALLCONTEXT* optional, out
    , "Ptr", szTargetUserSid   ; LPSTR optional, out
    , "Ptr", pcchTargetUserSid   ; DWORD* optional, in/out
    , "UInt")   ; return: DWORD

●MsiEnumPatchesExA(szProductCode, szUserSid, dwContext, dwFilter, dwIndex, szPatchCode, szTargetProductCode, pdwTargetProductContext, szTargetUserSid, pcchTargetUserSid) = DLL("msi.dll", "dword MsiEnumPatchesExA(char*, char*, dword, dword, dword, char*, char*, void*, char*, void*)")
# 呼び出し: MsiEnumPatchesExA(szProductCode, szUserSid, dwContext, dwFilter, dwIndex, szPatchCode, szTargetProductCode, pdwTargetProductContext, szTargetUserSid, pcchTargetUserSid)
# szProductCode : LPCSTR optional -> "char*"
# szUserSid : LPCSTR optional -> "char*"
# dwContext : DWORD -> "dword"
# dwFilter : DWORD -> "dword"
# dwIndex : DWORD -> "dword"
# szPatchCode : LPSTR optional, out -> "char*"
# szTargetProductCode : LPSTR optional, out -> "char*"
# pdwTargetProductContext : MSIINSTALLCONTEXT* optional, out -> "void*"
# szTargetUserSid : LPSTR optional, out -> "char*"
# pcchTargetUserSid : DWORD* optional, 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)。

const std = @import("std");

extern "msi" fn MsiEnumPatchesExA(
    szProductCode: [*c]const u8, // LPCSTR optional
    szUserSid: [*c]const u8, // LPCSTR optional
    dwContext: u32, // DWORD
    dwFilter: u32, // DWORD
    dwIndex: u32, // DWORD
    szPatchCode: [*c]u8, // LPSTR optional, out
    szTargetProductCode: [*c]u8, // LPSTR optional, out
    pdwTargetProductContext: [*c]i32, // MSIINSTALLCONTEXT* optional, out
    szTargetUserSid: [*c]u8, // LPSTR optional, out
    pcchTargetUserSid: [*c]u32 // DWORD* optional, in/out
) callconv(std.os.windows.WINAPI) u32;

proc MsiEnumPatchesExA(
    szProductCode: cstring,  # LPCSTR optional
    szUserSid: cstring,  # LPCSTR optional
    dwContext: uint32,  # DWORD
    dwFilter: uint32,  # DWORD
    dwIndex: uint32,  # DWORD
    szPatchCode: ptr char,  # LPSTR optional, out
    szTargetProductCode: ptr char,  # LPSTR optional, out
    pdwTargetProductContext: ptr int32,  # MSIINSTALLCONTEXT* optional, out
    szTargetUserSid: ptr char,  # LPSTR optional, out
    pcchTargetUserSid: ptr uint32  # DWORD* optional, in/out
): uint32 {.importc: "MsiEnumPatchesExA", stdcall, dynlib: "msi.dll".}

pragma(lib, "msi");
extern(Windows)
uint MsiEnumPatchesExA(
    const(char)* szProductCode,   // LPCSTR optional
    const(char)* szUserSid,   // LPCSTR optional
    uint dwContext,   // DWORD
    uint dwFilter,   // DWORD
    uint dwIndex,   // DWORD
    char* szPatchCode,   // LPSTR optional, out
    char* szTargetProductCode,   // LPSTR optional, out
    int* pdwTargetProductContext,   // MSIINSTALLCONTEXT* optional, out
    char* szTargetUserSid,   // LPSTR optional, out
    uint* pcchTargetUserSid   // DWORD* optional, in/out
);

ccall((:MsiEnumPatchesExA, "msi.dll"), stdcall, UInt32,
      (Cstring, Cstring, UInt32, UInt32, UInt32, Ptr{UInt8}, Ptr{UInt8}, Ptr{Int32}, Ptr{UInt8}, Ptr{UInt32}),
      szProductCode, szUserSid, dwContext, dwFilter, dwIndex, szPatchCode, szTargetProductCode, pdwTargetProductContext, szTargetUserSid, pcchTargetUserSid)
# szProductCode : LPCSTR optional -> Cstring
# szUserSid : LPCSTR optional -> Cstring
# dwContext : DWORD -> UInt32
# dwFilter : DWORD -> UInt32
# dwIndex : DWORD -> UInt32
# szPatchCode : LPSTR optional, out -> Ptr{UInt8}
# szTargetProductCode : LPSTR optional, out -> Ptr{UInt8}
# pdwTargetProductContext : MSIINSTALLCONTEXT* optional, out -> Ptr{Int32}
# szTargetUserSid : LPSTR optional, out -> Ptr{UInt8}
# pcchTargetUserSid : DWORD* optional, in/out -> Ptr{UInt32}
# stdcall は 32bit のみ意味を持つ(x64 では無視)。

local ffi = require("ffi")
ffi.cdef[[
uint32_t MsiEnumPatchesExA(
    const char* szProductCode,
    const char* szUserSid,
    uint32_t dwContext,
    uint32_t dwFilter,
    uint32_t dwIndex,
    char* szPatchCode,
    char* szTargetProductCode,
    int32_t* pdwTargetProductContext,
    char* szTargetUserSid,
    uint32_t* pcchTargetUserSid);
]]
local msi = ffi.load("msi")
-- msi.MsiEnumPatchesExA(szProductCode, szUserSid, dwContext, dwFilter, dwIndex, szPatchCode, szTargetProductCode, pdwTargetProductContext, szTargetUserSid, pcchTargetUserSid)
-- szProductCode : LPCSTR optional
-- szUserSid : LPCSTR optional
-- dwContext : DWORD
-- dwFilter : DWORD
-- dwIndex : DWORD
-- szPatchCode : LPSTR optional, out
-- szTargetProductCode : LPSTR optional, out
-- pdwTargetProductContext : MSIINSTALLCONTEXT* optional, out
-- szTargetUserSid : LPSTR optional, out
-- pcchTargetUserSid : DWORD* optional, 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。

const koffi = require('koffi');
const lib = koffi.load('msi.dll');
const MsiEnumPatchesExA = lib.func('__stdcall', 'MsiEnumPatchesExA', 'uint32_t', ['str', 'str', 'uint32_t', 'uint32_t', 'uint32_t', 'char *', 'char *', 'int32_t *', 'char *', 'uint32_t *']);
// MsiEnumPatchesExA(szProductCode, szUserSid, dwContext, dwFilter, dwIndex, szPatchCode, szTargetProductCode, pdwTargetProductContext, szTargetUserSid, pcchTargetUserSid)
// szProductCode : LPCSTR optional -> 'str'
// szUserSid : LPCSTR optional -> 'str'
// dwContext : DWORD -> 'uint32_t'
// dwFilter : DWORD -> 'uint32_t'
// dwIndex : DWORD -> 'uint32_t'
// szPatchCode : LPSTR optional, out -> 'char *'
// szTargetProductCode : LPSTR optional, out -> 'char *'
// pdwTargetProductContext : MSIINSTALLCONTEXT* optional, out -> 'int32_t *'
// szTargetUserSid : LPSTR optional, out -> 'char *'
// pcchTargetUserSid : DWORD* optional, 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", {
  MsiEnumPatchesExA: { parameters: ["buffer", "buffer", "u32", "u32", "u32", "buffer", "buffer", "pointer", "buffer", "pointer"], result: "u32" },
});
// lib.symbols.MsiEnumPatchesExA(szProductCode, szUserSid, dwContext, dwFilter, dwIndex, szPatchCode, szTargetProductCode, pdwTargetProductContext, szTargetUserSid, pcchTargetUserSid)
// szProductCode : LPCSTR optional -> "buffer"
// szUserSid : LPCSTR optional -> "buffer"
// dwContext : DWORD -> "u32"
// dwFilter : DWORD -> "u32"
// dwIndex : DWORD -> "u32"
// szPatchCode : LPSTR optional, out -> "buffer"
// szTargetProductCode : LPSTR optional, out -> "buffer"
// pdwTargetProductContext : MSIINSTALLCONTEXT* optional, out -> "pointer"
// szTargetUserSid : LPSTR optional, out -> "buffer"
// pcchTargetUserSid : DWORD* optional, in/out -> "pointer"
// 文字列は "buffer"。ANSI(-A) は new TextEncoder() で UTF-8/ANSI バイト列(末尾に \x00)を渡す。
// 値渡し構造体は { struct: [ ...field types... ] } を使用。

<?php
$ffi = FFI::cdef(<<<C
uint32_t MsiEnumPatchesExA(
    const char* szProductCode,
    const char* szUserSid,
    uint32_t dwContext,
    uint32_t dwFilter,
    uint32_t dwIndex,
    char* szPatchCode,
    char* szTargetProductCode,
    int32_t* pdwTargetProductContext,
    char* szTargetUserSid,
    uint32_t* pcchTargetUserSid);
C, "msi.dll");
// $ffi->MsiEnumPatchesExA(szProductCode, szUserSid, dwContext, dwFilter, dwIndex, szPatchCode, szTargetProductCode, pdwTargetProductContext, szTargetUserSid, pcchTargetUserSid);
// szProductCode : LPCSTR optional
// szUserSid : LPCSTR optional
// dwContext : DWORD
// dwFilter : DWORD
// dwIndex : DWORD
// szPatchCode : LPSTR optional, out
// szTargetProductCode : LPSTR optional, out
// pdwTargetProductContext : MSIINSTALLCONTEXT* optional, out
// szTargetUserSid : LPSTR optional, out
// pcchTargetUserSid : DWORD* optional, 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.ASCII_OPTIONS);
    int MsiEnumPatchesExA(
        String szProductCode,   // LPCSTR optional
        String szUserSid,   // LPCSTR optional
        int dwContext,   // DWORD
        int dwFilter,   // DWORD
        int dwIndex,   // DWORD
        byte[] szPatchCode,   // LPSTR optional, out
        byte[] szTargetProductCode,   // LPSTR optional, out
        IntByReference pdwTargetProductContext,   // MSIINSTALLCONTEXT* optional, out
        byte[] szTargetUserSid,   // LPSTR optional, out
        IntByReference pcchTargetUserSid   // DWORD* optional, in/out
    );
}

@[Link("msi")]
lib Libmsi
  fun MsiEnumPatchesExA = MsiEnumPatchesExA(
    szProductCode : UInt8*,   # LPCSTR optional
    szUserSid : UInt8*,   # LPCSTR optional
    dwContext : UInt32,   # DWORD
    dwFilter : UInt32,   # DWORD
    dwIndex : UInt32,   # DWORD
    szPatchCode : UInt8*,   # LPSTR optional, out
    szTargetProductCode : UInt8*,   # LPSTR optional, out
    pdwTargetProductContext : Int32*,   # MSIINSTALLCONTEXT* optional, out
    szTargetUserSid : UInt8*,   # LPSTR optional, out
    pcchTargetUserSid : UInt32*   # DWORD* optional, 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 MsiEnumPatchesExANative = Uint32 Function(Pointer<Utf8>, Pointer<Utf8>, Uint32, Uint32, Uint32, Pointer<Utf8>, Pointer<Utf8>, Pointer<Int32>, Pointer<Utf8>, Pointer<Uint32>);
typedef MsiEnumPatchesExADart = int Function(Pointer<Utf8>, Pointer<Utf8>, int, int, int, Pointer<Utf8>, Pointer<Utf8>, Pointer<Int32>, Pointer<Utf8>, Pointer<Uint32>);
final MsiEnumPatchesExA = DynamicLibrary.open('msi.dll')
    .lookupFunction<MsiEnumPatchesExANative, MsiEnumPatchesExADart>('MsiEnumPatchesExA');
// szProductCode : LPCSTR optional -> Pointer<Utf8>
// szUserSid : LPCSTR optional -> Pointer<Utf8>
// dwContext : DWORD -> Uint32
// dwFilter : DWORD -> Uint32
// dwIndex : DWORD -> Uint32
// szPatchCode : LPSTR optional, out -> Pointer<Utf8>
// szTargetProductCode : LPSTR optional, out -> Pointer<Utf8>
// pdwTargetProductContext : MSIINSTALLCONTEXT* optional, out -> Pointer<Int32>
// szTargetUserSid : LPSTR optional, out -> Pointer<Utf8>
// pcchTargetUserSid : DWORD* optional, in/out -> Pointer<Uint32>
// 文字列は package:ffi の "...".toNativeUtf16()/toNativeUtf8() で変換。

{$mode objfpc}{$H+}
function MsiEnumPatchesExA(
  szProductCode: PAnsiChar;   // LPCSTR optional
  szUserSid: PAnsiChar;   // LPCSTR optional
  dwContext: DWORD;   // DWORD
  dwFilter: DWORD;   // DWORD
  dwIndex: DWORD;   // DWORD
  szPatchCode: PAnsiChar;   // LPSTR optional, out
  szTargetProductCode: PAnsiChar;   // LPSTR optional, out
  pdwTargetProductContext: Pointer;   // MSIINSTALLCONTEXT* optional, out
  szTargetUserSid: PAnsiChar;   // LPSTR optional, out
  pcchTargetUserSid: Pointer   // DWORD* optional, in/out
): DWORD; stdcall;
  external 'msi.dll' name 'MsiEnumPatchesExA';

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

foreign import stdcall safe "MsiEnumPatchesExA"
  c_MsiEnumPatchesExA :: CString -> CString -> Word32 -> Word32 -> Word32 -> CString -> CString -> Ptr Int32 -> CString -> Ptr Word32 -> IO Word32
-- szProductCode : LPCSTR optional -> CString
-- szUserSid : LPCSTR optional -> CString
-- dwContext : DWORD -> Word32
-- dwFilter : DWORD -> Word32
-- dwIndex : DWORD -> Word32
-- szPatchCode : LPSTR optional, out -> CString
-- szTargetProductCode : LPSTR optional, out -> CString
-- pdwTargetProductContext : MSIINSTALLCONTEXT* optional, out -> Ptr Int32
-- szTargetUserSid : LPSTR optional, out -> CString
-- pcchTargetUserSid : DWORD* optional, 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 msienumpatchesexa =
  foreign "MsiEnumPatchesExA"
    (string @-> string @-> uint32_t @-> uint32_t @-> uint32_t @-> string @-> string @-> (ptr int32_t) @-> string @-> (ptr uint32_t) @-> returning uint32_t)
(* szProductCode : LPCSTR optional -> string *)
(* szUserSid : LPCSTR optional -> string *)
(* dwContext : DWORD -> uint32_t *)
(* dwFilter : DWORD -> uint32_t *)
(* dwIndex : DWORD -> uint32_t *)
(* szPatchCode : LPSTR optional, out -> string *)
(* szTargetProductCode : LPSTR optional, out -> string *)
(* pdwTargetProductContext : MSIINSTALLCONTEXT* optional, out -> (ptr int32_t) *)
(* szTargetUserSid : LPSTR optional, out -> string *)
(* pcchTargetUserSid : DWORD* optional, 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 ("MsiEnumPatchesExA" msi-enum-patches-ex-a :convention :stdcall) :uint32
  (sz-product-code :string)   ; LPCSTR optional
  (sz-user-sid :string)   ; LPCSTR optional
  (dw-context :uint32)   ; DWORD
  (dw-filter :uint32)   ; DWORD
  (dw-index :uint32)   ; DWORD
  (sz-patch-code :pointer)   ; LPSTR optional, out
  (sz-target-product-code :pointer)   ; LPSTR optional, out
  (pdw-target-product-context :pointer)   ; MSIINSTALLCONTEXT* optional, out
  (sz-target-user-sid :pointer)   ; LPSTR optional, out
  (pcch-target-user-sid :pointer))   ; DWORD* optional, in/out
; isize/usize(INT_PTR/SIZE_T)は x64 前提で :int64/:uint64。x86 では :int32/:uint32。

use Win32::API;
my $MsiEnumPatchesExA = Win32::API::More->new('msi',
    'DWORD MsiEnumPatchesExA(LPCSTR szProductCode, LPCSTR szUserSid, DWORD dwContext, DWORD dwFilter, DWORD dwIndex, LPSTR szPatchCode, LPSTR szTargetProductCode, LPVOID pdwTargetProductContext, LPSTR szTargetUserSid, LPVOID pcchTargetUserSid)');
# my $ret = $MsiEnumPatchesExA->Call($szProductCode, $szUserSid, $dwContext, $dwFilter, $dwIndex, $szPatchCode, $szTargetProductCode, $pdwTargetProductContext, $szTargetUserSid, $pcchTargetUserSid);
# szProductCode : LPCSTR optional -> LPCSTR
# szUserSid : LPCSTR optional -> LPCSTR
# dwContext : DWORD -> DWORD
# dwFilter : DWORD -> DWORD
# dwIndex : DWORD -> DWORD
# szPatchCode : LPSTR optional, out -> LPSTR
# szTargetProductCode : LPSTR optional, out -> LPSTR
# pdwTargetProductContext : MSIINSTALLCONTEXT* optional, out -> LPVOID
# szTargetUserSid : LPSTR optional, out -> LPSTR
# pcchTargetUserSid : DWORD* optional, 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。