VariantToBoolean

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

HRESULT VariantToBoolean(
    const VARIANT* varIn,
    BOOL* pfRet
);

<DllImport("PROPSYS.dll", ExactSpelling:=True)>
Public Shared Function VariantToBoolean(
    varIn As IntPtr,   ' VARIANT*
    <Out> ByRef pfRet As Boolean   ' BOOL* out
) As Integer
End Function

' varIn : VARIANT*
' pfRet : BOOL* out
Declare PtrSafe Function VariantToBoolean Lib "propsys" ( _
    ByVal varIn As LongPtr, _
    ByRef pfRet As Long) As Long
' VBA7前提(PtrSafe)。32bit Office では LongPtr→Long。Integer=16bit / Long=32bit / LongLong=64bit。

import ctypes
from ctypes import wintypes

VariantToBoolean = ctypes.windll.propsys.VariantToBoolean
VariantToBoolean.restype = ctypes.c_int
VariantToBoolean.argtypes = [
    ctypes.c_void_p,  # varIn : VARIANT*
    ctypes.c_void_p,  # pfRet : BOOL* out
]

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('PROPSYS.dll')
VariantToBoolean = Fiddle::Function.new(
  lib['VariantToBoolean'],
  [
    Fiddle::TYPE_VOIDP,  # varIn : VARIANT*
    Fiddle::TYPE_VOIDP,  # pfRet : BOOL* out
  ],
  Fiddle::TYPE_INT)

#[link(name = "propsys")]
extern "system" {
    fn VariantToBoolean(
        varIn: *const VARIANT,  // VARIANT*
        pfRet: *mut i32  // BOOL* out
    ) -> i32;
}
// crates: windows-sys provides ready-made bindings for this API.

$sig = @"
[DllImport("PROPSYS.dll")]
public static extern int VariantToBoolean(IntPtr varIn, out bool pfRet);
"@
$api = Add-Type -MemberDefinition $sig -Name 'PROPSYS_VariantToBoolean' -Namespace Win32 -PassThru
# $api::VariantToBoolean(varIn, pfRet)

#uselib "PROPSYS.dll"
#func global VariantToBoolean "VariantToBoolean" sptr, sptr
; VariantToBoolean varptr(varIn), varptr(pfRet)   ; 戻り値は stat
; varIn : VARIANT* -> "sptr"
; pfRet : BOOL* 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 (
	propsys = windows.NewLazySystemDLL("PROPSYS.dll")
	procVariantToBoolean = propsys.NewProc("VariantToBoolean")
)

// varIn (VARIANT*), pfRet (BOOL* out)
r1, _, err := procVariantToBoolean.Call(
	uintptr(varIn),
	uintptr(pfRet),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // HRESULT

function VariantToBoolean(
  varIn: Pointer;   // VARIANT*
  pfRet: Pointer   // BOOL* out
): Integer; stdcall;
  external 'PROPSYS.dll' name 'VariantToBoolean';

result := DllCall("PROPSYS\VariantToBoolean"
    , "Ptr", varIn   ; VARIANT*
    , "Ptr", pfRet   ; BOOL* out
    , "Int")   ; return: HRESULT

●VariantToBoolean(varIn, pfRet) = DLL("PROPSYS.dll", "int VariantToBoolean(void*, void*)")
# 呼び出し: VariantToBoolean(varIn, pfRet)
# varIn : VARIANT* -> "void*"
# pfRet : BOOL* 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 "propsys" fn VariantToBoolean(
    varIn: [*c]VARIANT, // VARIANT*
    pfRet: [*c]i32 // BOOL* out
) callconv(std.os.windows.WINAPI) i32;

proc VariantToBoolean(
    varIn: ptr VARIANT,  # VARIANT*
    pfRet: ptr int32  # BOOL* out
): int32 {.importc: "VariantToBoolean", stdcall, dynlib: "PROPSYS.dll".}

pragma(lib, "propsys");
extern(Windows)
int VariantToBoolean(
    VARIANT* varIn,   // VARIANT*
    int* pfRet   // BOOL* out
);

ccall((:VariantToBoolean, "PROPSYS.dll"), stdcall, Int32,
      (Ptr{VARIANT}, Ptr{Int32}),
      varIn, pfRet)
# varIn : VARIANT* -> Ptr{VARIANT}
# pfRet : BOOL* out -> Ptr{Int32}
# stdcall は 32bit のみ意味を持つ(x64 では無視)。

local ffi = require("ffi")
ffi.cdef[[
int32_t VariantToBoolean(
    void* varIn,
    int32_t* pfRet);
]]
local propsys = ffi.load("propsys")
-- propsys.VariantToBoolean(varIn, pfRet)
-- varIn : VARIANT*
-- pfRet : BOOL* 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('PROPSYS.dll');
const VariantToBoolean = lib.func('__stdcall', 'VariantToBoolean', 'int32_t', ['void *', 'int32_t *']);
// VariantToBoolean(varIn, pfRet)
// varIn : VARIANT* -> 'void *'
// pfRet : BOOL* 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("PROPSYS.dll", {
  VariantToBoolean: { parameters: ["pointer", "pointer"], result: "i32" },
});
// lib.symbols.VariantToBoolean(varIn, pfRet)
// varIn : VARIANT* -> "pointer"
// pfRet : BOOL* 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 VariantToBoolean(
    void* varIn,
    int32_t* pfRet);
C, "PROPSYS.dll");
// $ffi->VariantToBoolean(varIn, pfRet);
// varIn : VARIANT*
// pfRet : BOOL* 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 Propsys extends StdCallLibrary {
    Propsys INSTANCE = Native.load("propsys", Propsys.class);
    int VariantToBoolean(
        Pointer varIn,   // VARIANT*
        IntByReference pfRet   // BOOL* out
    );
}

@[Link("propsys")]
lib LibPROPSYS
  fun VariantToBoolean = VariantToBoolean(
    varIn : VARIANT*,   # VARIANT*
    pfRet : Int32*   # BOOL* 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 VariantToBooleanNative = Int32 Function(Pointer<Void>, Pointer<Int32>);
typedef VariantToBooleanDart = int Function(Pointer<Void>, Pointer<Int32>);
final VariantToBoolean = DynamicLibrary.open('PROPSYS.dll')
    .lookupFunction<VariantToBooleanNative, VariantToBooleanDart>('VariantToBoolean');
// varIn : VARIANT* -> Pointer<Void>
// pfRet : BOOL* out -> Pointer<Int32>
// 文字列は package:ffi の "...".toNativeUtf16()/toNativeUtf8() で変換。

{$mode objfpc}{$H+}
function VariantToBoolean(
  varIn: Pointer;   // VARIANT*
  pfRet: Pointer   // BOOL* out
): Integer; stdcall;
  external 'PROPSYS.dll' name 'VariantToBoolean';

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

foreign import stdcall safe "VariantToBoolean"
  c_VariantToBoolean :: Ptr () -> Ptr CInt -> IO Int32
-- varIn : VARIANT* -> Ptr ()
-- pfRet : BOOL* out -> Ptr CInt
-- 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 varianttoboolean =
  foreign "VariantToBoolean"
    ((ptr void) @-> (ptr int32_t) @-> returning int32_t)
(* varIn : VARIANT* -> (ptr void) *)
(* pfRet : BOOL* 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 propsys (t "PROPSYS.dll"))
(cffi:use-foreign-library propsys)

(cffi:defcfun ("VariantToBoolean" variant-to-boolean :convention :stdcall) :int32
  (var-in :pointer)   ; VARIANT*
  (pf-ret :pointer))   ; BOOL* out
; isize/usize(INT_PTR/SIZE_T)は x64 前提で :int64/:uint64。x86 では :int32/:uint32。

use Win32::API;
my $VariantToBoolean = Win32::API::More->new('PROPSYS',
    'int VariantToBoolean(LPVOID varIn, LPVOID pfRet)');
# my $ret = $VariantToBoolean->Call($varIn, $pfRet);
# varIn : VARIANT* -> LPVOID
# pfRet : BOOL* out -> LPVOID
# 値渡し構造体は pack() した文字列、または Win32::API::Struct を使用。