CoInitializeEx

// OLE32.dll
#include <windows.h>

HRESULT CoInitializeEx(
    void* pvReserved,   // optional
    DWORD dwCoInit
);

<DllImport("OLE32.dll", ExactSpelling:=True)>
Public Shared Function CoInitializeEx(
    pvReserved As IntPtr,   ' void* optional
    dwCoInit As UInteger   ' DWORD
) As Integer
End Function

' pvReserved : void* optional
' dwCoInit : DWORD
Declare PtrSafe Function CoInitializeEx Lib "ole32" ( _
    ByVal pvReserved As LongPtr, _
    ByVal dwCoInit 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

CoInitializeEx = ctypes.windll.ole32.CoInitializeEx
CoInitializeEx.restype = ctypes.c_int
CoInitializeEx.argtypes = [
    ctypes.POINTER(None),  # pvReserved : void* optional
    wintypes.DWORD,  # dwCoInit : DWORD
]

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('OLE32.dll')
CoInitializeEx = Fiddle::Function.new(
  lib['CoInitializeEx'],
  [
    Fiddle::TYPE_VOIDP,  # pvReserved : void* optional
    -Fiddle::TYPE_INT,  # dwCoInit : DWORD
  ],
  Fiddle::TYPE_INT)

#[link(name = "ole32")]
extern "system" {
    fn CoInitializeEx(
        pvReserved: *mut (),  // void* optional
        dwCoInit: u32  // DWORD
    ) -> i32;
}
// crates: windows-sys provides ready-made bindings for this API.

$sig = @"
[DllImport("OLE32.dll")]
public static extern int CoInitializeEx(IntPtr pvReserved, uint dwCoInit);
"@
$api = Add-Type -MemberDefinition $sig -Name 'OLE32_CoInitializeEx' -Namespace Win32 -PassThru
# $api::CoInitializeEx(pvReserved, dwCoInit)

#uselib "OLE32.dll"
#func global CoInitializeEx "CoInitializeEx" sptr, sptr
; CoInitializeEx pvReserved, dwCoInit   ; 戻り値は stat
; pvReserved : void* optional -> "sptr"
; dwCoInit : 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。

#uselib "OLE32.dll"
#cfunc global CoInitializeEx "CoInitializeEx" sptr, int
; res = CoInitializeEx(pvReserved, dwCoInit)
; pvReserved : void* optional -> "sptr"
; dwCoInit : DWORD -> "int"

; HRESULT CoInitializeEx(void* pvReserved, DWORD dwCoInit)
#uselib "OLE32.dll"
#cfunc global CoInitializeEx "CoInitializeEx" intptr, int
; res = CoInitializeEx(pvReserved, dwCoInit)
; pvReserved : void* optional -> "intptr"
; dwCoInit : DWORD -> "int"

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

var (
	ole32 = windows.NewLazySystemDLL("OLE32.dll")
	procCoInitializeEx = ole32.NewProc("CoInitializeEx")
)

// pvReserved (void* optional), dwCoInit (DWORD)
r1, _, err := procCoInitializeEx.Call(
	uintptr(pvReserved),
	uintptr(dwCoInit),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // HRESULT

function CoInitializeEx(
  pvReserved: Pointer;   // void* optional
  dwCoInit: DWORD   // DWORD
): Integer; stdcall;
  external 'OLE32.dll' name 'CoInitializeEx';

result := DllCall("OLE32\CoInitializeEx"
    , "Ptr", pvReserved   ; void* optional
    , "UInt", dwCoInit   ; DWORD
    , "Int")   ; return: HRESULT

●CoInitializeEx(pvReserved, dwCoInit) = DLL("OLE32.dll", "int CoInitializeEx(void*, dword)")
# 呼び出し: CoInitializeEx(pvReserved, dwCoInit)
# pvReserved : void* optional -> "void*"
# dwCoInit : 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 "ole32" fn CoInitializeEx(
    pvReserved: ?*anyopaque, // void* optional
    dwCoInit: u32 // DWORD
) callconv(std.os.windows.WINAPI) i32;

proc CoInitializeEx(
    pvReserved: pointer,  # void* optional
    dwCoInit: uint32  # DWORD
): int32 {.importc: "CoInitializeEx", stdcall, dynlib: "OLE32.dll".}

pragma(lib, "ole32");
extern(Windows)
int CoInitializeEx(
    void* pvReserved,   // void* optional
    uint dwCoInit   // DWORD
);

ccall((:CoInitializeEx, "OLE32.dll"), stdcall, Int32,
      (Ptr{Cvoid}, UInt32),
      pvReserved, dwCoInit)
# pvReserved : void* optional -> Ptr{Cvoid}
# dwCoInit : 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 CoInitializeEx(
    void* pvReserved,
    uint32_t dwCoInit);
]]
local ole32 = ffi.load("ole32")
-- ole32.CoInitializeEx(pvReserved, dwCoInit)
-- pvReserved : void* optional
-- dwCoInit : 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('OLE32.dll');
const CoInitializeEx = lib.func('__stdcall', 'CoInitializeEx', 'int32_t', ['void *', 'uint32_t']);
// CoInitializeEx(pvReserved, dwCoInit)
// pvReserved : void* optional -> 'void *'
// dwCoInit : 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("OLE32.dll", {
  CoInitializeEx: { parameters: ["pointer", "u32"], result: "i32" },
});
// lib.symbols.CoInitializeEx(pvReserved, dwCoInit)
// pvReserved : void* optional -> "pointer"
// dwCoInit : 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 CoInitializeEx(
    void* pvReserved,
    uint32_t dwCoInit);
C, "OLE32.dll");
// $ffi->CoInitializeEx(pvReserved, dwCoInit);
// pvReserved : void* optional
// dwCoInit : 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 Ole32 extends StdCallLibrary {
    Ole32 INSTANCE = Native.load("ole32", Ole32.class);
    int CoInitializeEx(
        Pointer pvReserved,   // void* optional
        int dwCoInit   // DWORD
    );
}

@[Link("ole32")]
lib LibOLE32
  fun CoInitializeEx = CoInitializeEx(
    pvReserved : Void*,   # void* optional
    dwCoInit : 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 CoInitializeExNative = Int32 Function(Pointer<Void>, Uint32);
typedef CoInitializeExDart = int Function(Pointer<Void>, int);
final CoInitializeEx = DynamicLibrary.open('OLE32.dll')
    .lookupFunction<CoInitializeExNative, CoInitializeExDart>('CoInitializeEx');
// pvReserved : void* optional -> Pointer<Void>
// dwCoInit : DWORD -> Uint32
// 文字列は package:ffi の "...".toNativeUtf16()/toNativeUtf8() で変換。

{$mode objfpc}{$H+}
function CoInitializeEx(
  pvReserved: Pointer;   // void* optional
  dwCoInit: DWORD   // DWORD
): Integer; stdcall;
  external 'OLE32.dll' name 'CoInitializeEx';

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

foreign import stdcall safe "CoInitializeEx"
  c_CoInitializeEx :: Ptr () -> Word32 -> IO Int32
-- pvReserved : void* optional -> Ptr ()
-- dwCoInit : 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 coinitializeex =
  foreign "CoInitializeEx"
    ((ptr void) @-> uint32_t @-> returning int32_t)
(* pvReserved : void* optional -> (ptr void) *)
(* dwCoInit : 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 ole32 (t "OLE32.dll"))
(cffi:use-foreign-library ole32)

(cffi:defcfun ("CoInitializeEx" co-initialize-ex :convention :stdcall) :int32
  (pv-reserved :pointer)   ; void* optional
  (dw-co-init :uint32))   ; DWORD
; isize/usize(INT_PTR/SIZE_T)は x64 前提で :int64/:uint64。x86 では :int32/:uint32。

use Win32::API;
my $CoInitializeEx = Win32::API::More->new('OLE32',
    'int CoInitializeEx(LPVOID pvReserved, DWORD dwCoInit)');
# my $ret = $CoInitializeEx->Call($pvReserved, $dwCoInit);
# pvReserved : void* optional -> LPVOID
# dwCoInit : DWORD -> DWORD
# 値渡し構造体は pack() した文字列、または Win32::API::Struct を使用。