PropVariantToBuffer

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

HRESULT PropVariantToBuffer(
    const PROPVARIANT* propvar,
    void* pv,
    DWORD cb
);

<DllImport("PROPSYS.dll", ExactSpelling:=True)>
Public Shared Function PropVariantToBuffer(
    propvar As IntPtr,   ' PROPVARIANT*
    pv As IntPtr,   ' void* out
    cb As UInteger   ' DWORD
) As Integer
End Function

' propvar : PROPVARIANT*
' pv : void* out
' cb : DWORD
Declare PtrSafe Function PropVariantToBuffer Lib "propsys" ( _
    ByVal propvar As LongPtr, _
    ByVal pv As LongPtr, _
    ByVal cb 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

PropVariantToBuffer = ctypes.windll.propsys.PropVariantToBuffer
PropVariantToBuffer.restype = ctypes.c_int
PropVariantToBuffer.argtypes = [
    ctypes.c_void_p,  # propvar : PROPVARIANT*
    ctypes.POINTER(None),  # pv : void* out
    wintypes.DWORD,  # cb : DWORD
]

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('PROPSYS.dll')
PropVariantToBuffer = Fiddle::Function.new(
  lib['PropVariantToBuffer'],
  [
    Fiddle::TYPE_VOIDP,  # propvar : PROPVARIANT*
    Fiddle::TYPE_VOIDP,  # pv : void* out
    -Fiddle::TYPE_INT,  # cb : DWORD
  ],
  Fiddle::TYPE_INT)

#[link(name = "propsys")]
extern "system" {
    fn PropVariantToBuffer(
        propvar: *const PROPVARIANT,  // PROPVARIANT*
        pv: *mut (),  // void* out
        cb: u32  // DWORD
    ) -> i32;
}
// crates: windows-sys provides ready-made bindings for this API.

$sig = @"
[DllImport("PROPSYS.dll")]
public static extern int PropVariantToBuffer(IntPtr propvar, IntPtr pv, uint cb);
"@
$api = Add-Type -MemberDefinition $sig -Name 'PROPSYS_PropVariantToBuffer' -Namespace Win32 -PassThru
# $api::PropVariantToBuffer(propvar, pv, cb)

#uselib "PROPSYS.dll"
#func global PropVariantToBuffer "PropVariantToBuffer" sptr, sptr, sptr
; PropVariantToBuffer varptr(propvar), pv, cb   ; 戻り値は stat
; propvar : PROPVARIANT* -> "sptr"
; pv : void* out -> "sptr"
; cb : DWORD -> "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")
	procPropVariantToBuffer = propsys.NewProc("PropVariantToBuffer")
)

// propvar (PROPVARIANT*), pv (void* out), cb (DWORD)
r1, _, err := procPropVariantToBuffer.Call(
	uintptr(propvar),
	uintptr(pv),
	uintptr(cb),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // HRESULT

function PropVariantToBuffer(
  propvar: Pointer;   // PROPVARIANT*
  pv: Pointer;   // void* out
  cb: DWORD   // DWORD
): Integer; stdcall;
  external 'PROPSYS.dll' name 'PropVariantToBuffer';

result := DllCall("PROPSYS\PropVariantToBuffer"
    , "Ptr", propvar   ; PROPVARIANT*
    , "Ptr", pv   ; void* out
    , "UInt", cb   ; DWORD
    , "Int")   ; return: HRESULT

●PropVariantToBuffer(propvar, pv, cb) = DLL("PROPSYS.dll", "int PropVariantToBuffer(void*, void*, dword)")
# 呼び出し: PropVariantToBuffer(propvar, pv, cb)
# propvar : PROPVARIANT* -> "void*"
# pv : void* out -> "void*"
# cb : DWORD -> "dword"
# 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 PropVariantToBuffer(
    propvar: [*c]PROPVARIANT, // PROPVARIANT*
    pv: ?*anyopaque, // void* out
    cb: u32 // DWORD
) callconv(std.os.windows.WINAPI) i32;

proc PropVariantToBuffer(
    propvar: ptr PROPVARIANT,  # PROPVARIANT*
    pv: pointer,  # void* out
    cb: uint32  # DWORD
): int32 {.importc: "PropVariantToBuffer", stdcall, dynlib: "PROPSYS.dll".}

pragma(lib, "propsys");
extern(Windows)
int PropVariantToBuffer(
    PROPVARIANT* propvar,   // PROPVARIANT*
    void* pv,   // void* out
    uint cb   // DWORD
);

ccall((:PropVariantToBuffer, "PROPSYS.dll"), stdcall, Int32,
      (Ptr{PROPVARIANT}, Ptr{Cvoid}, UInt32),
      propvar, pv, cb)
# propvar : PROPVARIANT* -> Ptr{PROPVARIANT}
# pv : void* out -> Ptr{Cvoid}
# cb : DWORD -> UInt32
# stdcall は 32bit のみ意味を持つ(x64 では無視)。

local ffi = require("ffi")
ffi.cdef[[
int32_t PropVariantToBuffer(
    void* propvar,
    void* pv,
    uint32_t cb);
]]
local propsys = ffi.load("propsys")
-- propsys.PropVariantToBuffer(propvar, pv, cb)
-- propvar : PROPVARIANT*
-- pv : void* out
-- cb : DWORD
-- 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 PropVariantToBuffer = lib.func('__stdcall', 'PropVariantToBuffer', 'int32_t', ['void *', 'void *', 'uint32_t']);
// PropVariantToBuffer(propvar, pv, cb)
// propvar : PROPVARIANT* -> 'void *'
// pv : void* out -> 'void *'
// cb : DWORD -> '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("PROPSYS.dll", {
  PropVariantToBuffer: { parameters: ["pointer", "pointer", "u32"], result: "i32" },
});
// lib.symbols.PropVariantToBuffer(propvar, pv, cb)
// propvar : PROPVARIANT* -> "pointer"
// pv : void* out -> "pointer"
// cb : DWORD -> "u32"
// 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 PropVariantToBuffer(
    void* propvar,
    void* pv,
    uint32_t cb);
C, "PROPSYS.dll");
// $ffi->PropVariantToBuffer(propvar, pv, cb);
// propvar : PROPVARIANT*
// pv : void* out
// cb : DWORD
// 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 PropVariantToBuffer(
        Pointer propvar,   // PROPVARIANT*
        Pointer pv,   // void* out
        int cb   // DWORD
    );
}

@[Link("propsys")]
lib LibPROPSYS
  fun PropVariantToBuffer = PropVariantToBuffer(
    propvar : PROPVARIANT*,   # PROPVARIANT*
    pv : Void*,   # void* out
    cb : UInt32   # DWORD
  ) : 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 PropVariantToBufferNative = Int32 Function(Pointer<Void>, Pointer<Void>, Uint32);
typedef PropVariantToBufferDart = int Function(Pointer<Void>, Pointer<Void>, int);
final PropVariantToBuffer = DynamicLibrary.open('PROPSYS.dll')
    .lookupFunction<PropVariantToBufferNative, PropVariantToBufferDart>('PropVariantToBuffer');
// propvar : PROPVARIANT* -> Pointer<Void>
// pv : void* out -> Pointer<Void>
// cb : DWORD -> Uint32
// 文字列は package:ffi の "...".toNativeUtf16()/toNativeUtf8() で変換。

{$mode objfpc}{$H+}
function PropVariantToBuffer(
  propvar: Pointer;   // PROPVARIANT*
  pv: Pointer;   // void* out
  cb: DWORD   // DWORD
): Integer; stdcall;
  external 'PROPSYS.dll' name 'PropVariantToBuffer';

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

foreign import stdcall safe "PropVariantToBuffer"
  c_PropVariantToBuffer :: Ptr () -> Ptr () -> Word32 -> IO Int32
-- propvar : PROPVARIANT* -> Ptr ()
-- pv : void* out -> Ptr ()
-- cb : DWORD -> 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 propvarianttobuffer =
  foreign "PropVariantToBuffer"
    ((ptr void) @-> (ptr void) @-> uint32_t @-> returning int32_t)
(* propvar : PROPVARIANT* -> (ptr void) *)
(* pv : void* out -> (ptr void) *)
(* cb : DWORD -> 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 propsys (t "PROPSYS.dll"))
(cffi:use-foreign-library propsys)

(cffi:defcfun ("PropVariantToBuffer" prop-variant-to-buffer :convention :stdcall) :int32
  (propvar :pointer)   ; PROPVARIANT*
  (pv :pointer)   ; void* out
  (cb :uint32))   ; DWORD
; isize/usize(INT_PTR/SIZE_T)は x64 前提で :int64/:uint64。x86 では :int32/:uint32。

use Win32::API;
my $PropVariantToBuffer = Win32::API::More->new('PROPSYS',
    'int PropVariantToBuffer(LPVOID propvar, LPVOID pv, DWORD cb)');
# my $ret = $PropVariantToBuffer->Call($propvar, $pv, $cb);
# propvar : PROPVARIANT* -> LPVOID
# pv : void* out -> LPVOID
# cb : DWORD -> DWORD
# 値渡し構造体は pack() した文字列、または Win32::API::Struct を使用。