MsiUseFeatureA

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

INSTALLSTATE MsiUseFeatureA(
    LPCSTR szProduct,
    LPCSTR szFeature
);

<DllImport("msi.dll", CharSet:=CharSet.Ansi, ExactSpelling:=True)>
Public Shared Function MsiUseFeatureA(
    <MarshalAs(UnmanagedType.LPStr)> szProduct As String,   ' LPCSTR
    <MarshalAs(UnmanagedType.LPStr)> szFeature As String   ' LPCSTR
) As Integer
End Function

' szProduct : LPCSTR
' szFeature : LPCSTR
Declare PtrSafe Function MsiUseFeatureA Lib "msi" ( _
    ByVal szProduct As String, _
    ByVal szFeature As String) As Long
' VBA7前提(PtrSafe)。32bit Office では LongPtr→Long。Integer=16bit / Long=32bit / LongLong=64bit。

import ctypes
from ctypes import wintypes

MsiUseFeatureA = ctypes.windll.msi.MsiUseFeatureA
MsiUseFeatureA.restype = ctypes.c_int
MsiUseFeatureA.argtypes = [
    wintypes.LPCSTR,  # szProduct : LPCSTR
    wintypes.LPCSTR,  # szFeature : LPCSTR
]

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('msi.dll')
MsiUseFeatureA = Fiddle::Function.new(
  lib['MsiUseFeatureA'],
  [
    Fiddle::TYPE_VOIDP,  # szProduct : LPCSTR
    Fiddle::TYPE_VOIDP,  # szFeature : LPCSTR
  ],
  Fiddle::TYPE_INT)

#[link(name = "msi")]
extern "system" {
    fn MsiUseFeatureA(
        szProduct: *const u8,  // LPCSTR
        szFeature: *const u8  // LPCSTR
    ) -> i32;
}
// crates: windows-sys provides ready-made bindings for this API.

$sig = @"
[DllImport("msi.dll", CharSet = CharSet.Ansi)]
public static extern int MsiUseFeatureA([MarshalAs(UnmanagedType.LPStr)] string szProduct, [MarshalAs(UnmanagedType.LPStr)] string szFeature);
"@
$api = Add-Type -MemberDefinition $sig -Name 'msi_MsiUseFeatureA' -Namespace Win32 -PassThru
# $api::MsiUseFeatureA(szProduct, szFeature)

#uselib "msi.dll"
#func global MsiUseFeatureA "MsiUseFeatureA" sptr, sptr
; MsiUseFeatureA szProduct, szFeature   ; 戻り値は stat
; szProduct : LPCSTR -> "sptr"
; szFeature : LPCSTR -> "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 "msi.dll"
#cfunc global MsiUseFeatureA "MsiUseFeatureA" str, str
; res = MsiUseFeatureA(szProduct, szFeature)
; szProduct : LPCSTR -> "str"
; szFeature : LPCSTR -> "str"

; INSTALLSTATE MsiUseFeatureA(LPCSTR szProduct, LPCSTR szFeature)
#uselib "msi.dll"
#cfunc global MsiUseFeatureA "MsiUseFeatureA" str, str
; res = MsiUseFeatureA(szProduct, szFeature)
; szProduct : LPCSTR -> "str"
; szFeature : LPCSTR -> "str"

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

var (
	msi = windows.NewLazySystemDLL("msi.dll")
	procMsiUseFeatureA = msi.NewProc("MsiUseFeatureA")
)

// szProduct (LPCSTR), szFeature (LPCSTR)
r1, _, err := procMsiUseFeatureA.Call(
	uintptr(unsafe.Pointer(windows.BytePtrFromString(szProduct))),
	uintptr(unsafe.Pointer(windows.BytePtrFromString(szFeature))),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // INSTALLSTATE

function MsiUseFeatureA(
  szProduct: PAnsiChar;   // LPCSTR
  szFeature: PAnsiChar   // LPCSTR
): Integer; stdcall;
  external 'msi.dll' name 'MsiUseFeatureA';

result := DllCall("msi\MsiUseFeatureA"
    , "AStr", szProduct   ; LPCSTR
    , "AStr", szFeature   ; LPCSTR
    , "Int")   ; return: INSTALLSTATE

●MsiUseFeatureA(szProduct, szFeature) = DLL("msi.dll", "int MsiUseFeatureA(char*, char*)")
# 呼び出し: MsiUseFeatureA(szProduct, szFeature)
# szProduct : LPCSTR -> "char*"
# szFeature : LPCSTR -> "char*"
# 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 MsiUseFeatureA(
    szProduct: [*c]const u8, // LPCSTR
    szFeature: [*c]const u8 // LPCSTR
) callconv(std.os.windows.WINAPI) i32;

proc MsiUseFeatureA(
    szProduct: cstring,  # LPCSTR
    szFeature: cstring  # LPCSTR
): int32 {.importc: "MsiUseFeatureA", stdcall, dynlib: "msi.dll".}

pragma(lib, "msi");
extern(Windows)
int MsiUseFeatureA(
    const(char)* szProduct,   // LPCSTR
    const(char)* szFeature   // LPCSTR
);

ccall((:MsiUseFeatureA, "msi.dll"), stdcall, Int32,
      (Cstring, Cstring),
      szProduct, szFeature)
# szProduct : LPCSTR -> Cstring
# szFeature : LPCSTR -> Cstring
# stdcall は 32bit のみ意味を持つ(x64 では無視)。

local ffi = require("ffi")
ffi.cdef[[
int32_t MsiUseFeatureA(
    const char* szProduct,
    const char* szFeature);
]]
local msi = ffi.load("msi")
-- msi.MsiUseFeatureA(szProduct, szFeature)
-- szProduct : LPCSTR
-- szFeature : LPCSTR
-- 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 MsiUseFeatureA = lib.func('__stdcall', 'MsiUseFeatureA', 'int32_t', ['str', 'str']);
// MsiUseFeatureA(szProduct, szFeature)
// szProduct : LPCSTR -> 'str'
// szFeature : LPCSTR -> 'str'
// 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", {
  MsiUseFeatureA: { parameters: ["buffer", "buffer"], result: "i32" },
});
// lib.symbols.MsiUseFeatureA(szProduct, szFeature)
// szProduct : LPCSTR -> "buffer"
// szFeature : LPCSTR -> "buffer"
// 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
int32_t MsiUseFeatureA(
    const char* szProduct,
    const char* szFeature);
C, "msi.dll");
// $ffi->MsiUseFeatureA(szProduct, szFeature);
// szProduct : LPCSTR
// szFeature : LPCSTR
// 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 MsiUseFeatureA(
        String szProduct,   // LPCSTR
        String szFeature   // LPCSTR
    );
}

@[Link("msi")]
lib Libmsi
  fun MsiUseFeatureA = MsiUseFeatureA(
    szProduct : UInt8*,   # LPCSTR
    szFeature : UInt8*   # LPCSTR
  ) : 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 MsiUseFeatureANative = Int32 Function(Pointer<Utf8>, Pointer<Utf8>);
typedef MsiUseFeatureADart = int Function(Pointer<Utf8>, Pointer<Utf8>);
final MsiUseFeatureA = DynamicLibrary.open('msi.dll')
    .lookupFunction<MsiUseFeatureANative, MsiUseFeatureADart>('MsiUseFeatureA');
// szProduct : LPCSTR -> Pointer<Utf8>
// szFeature : LPCSTR -> Pointer<Utf8>
// 文字列は package:ffi の "...".toNativeUtf16()/toNativeUtf8() で変換。

{$mode objfpc}{$H+}
function MsiUseFeatureA(
  szProduct: PAnsiChar;   // LPCSTR
  szFeature: PAnsiChar   // LPCSTR
): Integer; stdcall;
  external 'msi.dll' name 'MsiUseFeatureA';

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

foreign import stdcall safe "MsiUseFeatureA"
  c_MsiUseFeatureA :: CString -> CString -> IO Int32
-- szProduct : LPCSTR -> CString
-- szFeature : LPCSTR -> CString
-- 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 msiusefeaturea =
  foreign "MsiUseFeatureA"
    (string @-> string @-> returning int32_t)
(* szProduct : LPCSTR -> string *)
(* szFeature : LPCSTR -> string *)
(* 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 ("MsiUseFeatureA" msi-use-feature-a :convention :stdcall) :int32
  (sz-product :string)   ; LPCSTR
  (sz-feature :string))   ; LPCSTR
; isize/usize(INT_PTR/SIZE_T)は x64 前提で :int64/:uint64。x86 では :int32/:uint32。

use Win32::API;
my $MsiUseFeatureA = Win32::API::More->new('msi',
    'int MsiUseFeatureA(LPCSTR szProduct, LPCSTR szFeature)');
# my $ret = $MsiUseFeatureA->Call($szProduct, $szFeature);
# szProduct : LPCSTR -> LPCSTR
# szFeature : LPCSTR -> LPCSTR
# 値渡し構造体は pack() した文字列、または Win32::API::Struct を使用。