MsiGetFeatureCostW

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

DWORD MsiGetFeatureCostW(
    MSIHANDLE hInstall,
    LPCWSTR szFeature,
    MSICOSTTREE iCostTree,
    INSTALLSTATE iState,
    INT* piCost
);

<DllImport("msi.dll", CharSet:=CharSet.Unicode, ExactSpelling:=True)>
Public Shared Function MsiGetFeatureCostW(
    hInstall As UInteger,   ' MSIHANDLE
    <MarshalAs(UnmanagedType.LPWStr)> szFeature As String,   ' LPCWSTR
    iCostTree As Integer,   ' MSICOSTTREE
    iState As Integer,   ' INSTALLSTATE
    ByRef piCost As Integer   ' INT* in/out
) As UInteger
End Function

' hInstall : MSIHANDLE
' szFeature : LPCWSTR
' iCostTree : MSICOSTTREE
' iState : INSTALLSTATE
' piCost : INT* in/out
Declare PtrSafe Function MsiGetFeatureCostW Lib "msi" ( _
    ByVal hInstall As Long, _
    ByVal szFeature As LongPtr, _
    ByVal iCostTree As Long, _
    ByVal iState As Long, _
    ByRef piCost 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

MsiGetFeatureCostW = ctypes.windll.msi.MsiGetFeatureCostW
MsiGetFeatureCostW.restype = wintypes.DWORD
MsiGetFeatureCostW.argtypes = [
    wintypes.DWORD,  # hInstall : MSIHANDLE
    wintypes.LPCWSTR,  # szFeature : LPCWSTR
    ctypes.c_int,  # iCostTree : MSICOSTTREE
    ctypes.c_int,  # iState : INSTALLSTATE
    ctypes.POINTER(ctypes.c_int),  # piCost : INT* in/out
]

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('msi.dll')
MsiGetFeatureCostW = Fiddle::Function.new(
  lib['MsiGetFeatureCostW'],
  [
    -Fiddle::TYPE_INT,  # hInstall : MSIHANDLE
    Fiddle::TYPE_VOIDP,  # szFeature : LPCWSTR
    Fiddle::TYPE_INT,  # iCostTree : MSICOSTTREE
    Fiddle::TYPE_INT,  # iState : INSTALLSTATE
    Fiddle::TYPE_VOIDP,  # piCost : INT* in/out
  ],
  -Fiddle::TYPE_INT)
# Wide strings: pass str.encode("UTF-16LE") + "\x00\x00"

#[link(name = "msi")]
extern "system" {
    fn MsiGetFeatureCostW(
        hInstall: u32,  // MSIHANDLE
        szFeature: *const u16,  // LPCWSTR
        iCostTree: i32,  // MSICOSTTREE
        iState: i32,  // INSTALLSTATE
        piCost: *mut i32  // INT* in/out
    ) -> u32;
}
// crates: windows-sys provides ready-made bindings for this API.

$sig = @"
[DllImport("msi.dll", CharSet = CharSet.Unicode)]
public static extern uint MsiGetFeatureCostW(uint hInstall, [MarshalAs(UnmanagedType.LPWStr)] string szFeature, int iCostTree, int iState, ref int piCost);
"@
$api = Add-Type -MemberDefinition $sig -Name 'msi_MsiGetFeatureCostW' -Namespace Win32 -PassThru
# $api::MsiGetFeatureCostW(hInstall, szFeature, iCostTree, iState, piCost)

#uselib "msi.dll"
#func global MsiGetFeatureCostW "MsiGetFeatureCostW" wptr, wptr, wptr, wptr, wptr
; MsiGetFeatureCostW hInstall, szFeature, iCostTree, iState, varptr(piCost)   ; 戻り値は stat
; hInstall : MSIHANDLE -> "wptr"
; szFeature : LPCWSTR -> "wptr"
; iCostTree : MSICOSTTREE -> "wptr"
; iState : INSTALLSTATE -> "wptr"
; piCost : INT* 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")
	procMsiGetFeatureCostW = msi.NewProc("MsiGetFeatureCostW")
)

// hInstall (MSIHANDLE), szFeature (LPCWSTR), iCostTree (MSICOSTTREE), iState (INSTALLSTATE), piCost (INT* in/out)
r1, _, err := procMsiGetFeatureCostW.Call(
	uintptr(hInstall),
	uintptr(unsafe.Pointer(windows.StringToUTF16Ptr(szFeature))),
	uintptr(iCostTree),
	uintptr(iState),
	uintptr(piCost),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // DWORD

function MsiGetFeatureCostW(
  hInstall: DWORD;   // MSIHANDLE
  szFeature: PWideChar;   // LPCWSTR
  iCostTree: Integer;   // MSICOSTTREE
  iState: Integer;   // INSTALLSTATE
  piCost: Pointer   // INT* in/out
): DWORD; stdcall;
  external 'msi.dll' name 'MsiGetFeatureCostW';

result := DllCall("msi\MsiGetFeatureCostW"
    , "UInt", hInstall   ; MSIHANDLE
    , "WStr", szFeature   ; LPCWSTR
    , "Int", iCostTree   ; MSICOSTTREE
    , "Int", iState   ; INSTALLSTATE
    , "Ptr", piCost   ; INT* in/out
    , "UInt")   ; return: DWORD

●MsiGetFeatureCostW(hInstall, szFeature, iCostTree, iState, piCost) = DLL("msi.dll", "dword MsiGetFeatureCostW(dword, char*, int, int, void*)")
# 呼び出し: MsiGetFeatureCostW(hInstall, szFeature, iCostTree, iState, piCost)
# hInstall : MSIHANDLE -> "dword"
# szFeature : LPCWSTR -> "char*"
# iCostTree : MSICOSTTREE -> "int"
# iState : INSTALLSTATE -> "int"
# piCost : INT* 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 MsiGetFeatureCostW(
    hInstall: u32, // MSIHANDLE
    szFeature: [*c]const u16, // LPCWSTR
    iCostTree: i32, // MSICOSTTREE
    iState: i32, // INSTALLSTATE
    piCost: [*c]i32 // INT* 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 MsiGetFeatureCostW(
    hInstall: uint32,  # MSIHANDLE
    szFeature: WideCString,  # LPCWSTR
    iCostTree: int32,  # MSICOSTTREE
    iState: int32,  # INSTALLSTATE
    piCost: ptr int32  # INT* in/out
): uint32 {.importc: "MsiGetFeatureCostW", stdcall, dynlib: "msi.dll".}
# Unicode(-W): WideCString は newWideCString("...") で生成。

pragma(lib, "msi");
extern(Windows)
uint MsiGetFeatureCostW(
    uint hInstall,   // MSIHANDLE
    const(wchar)* szFeature,   // LPCWSTR
    int iCostTree,   // MSICOSTTREE
    int iState,   // INSTALLSTATE
    int* piCost   // INT* in/out
);

ccall((:MsiGetFeatureCostW, "msi.dll"), stdcall, UInt32,
      (UInt32, Cwstring, Int32, Int32, Ptr{Int32}),
      hInstall, szFeature, iCostTree, iState, piCost)
# hInstall : MSIHANDLE -> UInt32
# szFeature : LPCWSTR -> Cwstring
# iCostTree : MSICOSTTREE -> Int32
# iState : INSTALLSTATE -> Int32
# piCost : INT* in/out -> Ptr{Int32}
# 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 MsiGetFeatureCostW(
    uint32_t hInstall,
    const uint16_t* szFeature,
    int32_t iCostTree,
    int32_t iState,
    int32_t* piCost);
]]
local msi = ffi.load("msi")
-- msi.MsiGetFeatureCostW(hInstall, szFeature, iCostTree, iState, piCost)
-- hInstall : MSIHANDLE
-- szFeature : LPCWSTR
-- iCostTree : MSICOSTTREE
-- iState : INSTALLSTATE
-- piCost : INT* 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 MsiGetFeatureCostW = lib.func('__stdcall', 'MsiGetFeatureCostW', 'uint32_t', ['uint32_t', 'str16', 'int32_t', 'int32_t', 'int32_t *']);
// MsiGetFeatureCostW(hInstall, szFeature, iCostTree, iState, piCost)
// hInstall : MSIHANDLE -> 'uint32_t'
// szFeature : LPCWSTR -> 'str16'
// iCostTree : MSICOSTTREE -> 'int32_t'
// iState : INSTALLSTATE -> 'int32_t'
// piCost : INT* in/out -> 'int32_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", {
  MsiGetFeatureCostW: { parameters: ["u32", "buffer", "i32", "i32", "pointer"], result: "u32" },
});
// lib.symbols.MsiGetFeatureCostW(hInstall, szFeature, iCostTree, iState, piCost)
// hInstall : MSIHANDLE -> "u32"
// szFeature : LPCWSTR -> "buffer"
// iCostTree : MSICOSTTREE -> "i32"
// iState : INSTALLSTATE -> "i32"
// piCost : INT* 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 MsiGetFeatureCostW(
    uint32_t hInstall,
    const uint16_t* szFeature,
    int32_t iCostTree,
    int32_t iState,
    int32_t* piCost);
C, "msi.dll");
// $ffi->MsiGetFeatureCostW(hInstall, szFeature, iCostTree, iState, piCost);
// hInstall : MSIHANDLE
// szFeature : LPCWSTR
// iCostTree : MSICOSTTREE
// iState : INSTALLSTATE
// piCost : INT* 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 MsiGetFeatureCostW(
        int hInstall,   // MSIHANDLE
        WString szFeature,   // LPCWSTR
        int iCostTree,   // MSICOSTTREE
        int iState,   // INSTALLSTATE
        IntByReference piCost   // INT* 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 MsiGetFeatureCostW = MsiGetFeatureCostW(
    hInstall : UInt32,   # MSIHANDLE
    szFeature : UInt16*,   # LPCWSTR
    iCostTree : Int32,   # MSICOSTTREE
    iState : Int32,   # INSTALLSTATE
    piCost : Int32*   # INT* 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 MsiGetFeatureCostWNative = Uint32 Function(Uint32, Pointer<Utf16>, Int32, Int32, Pointer<Int32>);
typedef MsiGetFeatureCostWDart = int Function(int, Pointer<Utf16>, int, int, Pointer<Int32>);
final MsiGetFeatureCostW = DynamicLibrary.open('msi.dll')
    .lookupFunction<MsiGetFeatureCostWNative, MsiGetFeatureCostWDart>('MsiGetFeatureCostW');
// hInstall : MSIHANDLE -> Uint32
// szFeature : LPCWSTR -> Pointer<Utf16>
// iCostTree : MSICOSTTREE -> Int32
// iState : INSTALLSTATE -> Int32
// piCost : INT* in/out -> Pointer<Int32>
// 文字列は package:ffi の "...".toNativeUtf16()/toNativeUtf8() で変換。

{$mode objfpc}{$H+}
function MsiGetFeatureCostW(
  hInstall: DWORD;   // MSIHANDLE
  szFeature: PWideChar;   // LPCWSTR
  iCostTree: Integer;   // MSICOSTTREE
  iState: Integer;   // INSTALLSTATE
  piCost: Pointer   // INT* in/out
): DWORD; stdcall;
  external 'msi.dll' name 'MsiGetFeatureCostW';

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

foreign import stdcall safe "MsiGetFeatureCostW"
  c_MsiGetFeatureCostW :: Word32 -> CWString -> Int32 -> Int32 -> Ptr Int32 -> IO Word32
-- hInstall : MSIHANDLE -> Word32
-- szFeature : LPCWSTR -> CWString
-- iCostTree : MSICOSTTREE -> Int32
-- iState : INSTALLSTATE -> Int32
-- piCost : INT* in/out -> Ptr Int32
-- 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 msigetfeaturecostw =
  foreign "MsiGetFeatureCostW"
    (uint32_t @-> (ptr uint16_t) @-> int32_t @-> int32_t @-> (ptr int32_t) @-> returning uint32_t)
(* hInstall : MSIHANDLE -> uint32_t *)
(* szFeature : LPCWSTR -> (ptr uint16_t) *)
(* iCostTree : MSICOSTTREE -> int32_t *)
(* iState : INSTALLSTATE -> int32_t *)
(* piCost : INT* in/out -> (ptr int32_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 ("MsiGetFeatureCostW" msi-get-feature-cost-w :convention :stdcall) :uint32
  (h-install :uint32)   ; MSIHANDLE
  (sz-feature (:string :encoding :utf-16le))   ; LPCWSTR
  (i-cost-tree :int32)   ; MSICOSTTREE
  (i-state :int32)   ; INSTALLSTATE
  (pi-cost :pointer))   ; INT* in/out
; isize/usize(INT_PTR/SIZE_T)は x64 前提で :int64/:uint64。x86 では :int32/:uint32。

use Win32::API;
my $MsiGetFeatureCostW = Win32::API::More->new('msi',
    'DWORD MsiGetFeatureCostW(DWORD hInstall, LPCWSTR szFeature, int iCostTree, int iState, LPVOID piCost)');
# my $ret = $MsiGetFeatureCostW->Call($hInstall, $szFeature, $iCostTree, $iState, $piCost);
# hInstall : MSIHANDLE -> DWORD
# szFeature : LPCWSTR -> LPCWSTR
# iCostTree : MSICOSTTREE -> int
# iState : INSTALLSTATE -> int
# piCost : INT* 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。