CoCreateInstance

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

HRESULT CoCreateInstance(
    const GUID* rclsid,
    IUnknown* pUnkOuter,   // optional
    CLSCTX dwClsContext,
    const GUID* riid,
    void** ppv
);

<DllImport("OLE32.dll", ExactSpelling:=True)>
Public Shared Function CoCreateInstance(
    ByRef rclsid As Guid,   ' GUID*
    pUnkOuter As IntPtr,   ' IUnknown* optional
    dwClsContext As UInteger,   ' CLSCTX
    ByRef riid As Guid,   ' GUID*
    ppv As IntPtr   ' void** out
) As Integer
End Function

' rclsid : GUID*
' pUnkOuter : IUnknown* optional
' dwClsContext : CLSCTX
' riid : GUID*
' ppv : void** out
Declare PtrSafe Function CoCreateInstance Lib "ole32" ( _
    ByVal rclsid As LongPtr, _
    ByVal pUnkOuter As LongPtr, _
    ByVal dwClsContext As Long, _
    ByVal riid As LongPtr, _
    ByVal ppv As LongPtr) As Long
' VBA7前提(PtrSafe)。32bit Office では LongPtr→Long。Integer=16bit / Long=32bit / LongLong=64bit。

import ctypes
from ctypes import wintypes

CoCreateInstance = ctypes.windll.ole32.CoCreateInstance
CoCreateInstance.restype = ctypes.c_int
CoCreateInstance.argtypes = [
    ctypes.c_void_p,  # rclsid : GUID*
    ctypes.c_void_p,  # pUnkOuter : IUnknown* optional
    wintypes.DWORD,  # dwClsContext : CLSCTX
    ctypes.c_void_p,  # riid : GUID*
    ctypes.c_void_p,  # ppv : void** out
]

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('OLE32.dll')
CoCreateInstance = Fiddle::Function.new(
  lib['CoCreateInstance'],
  [
    Fiddle::TYPE_VOIDP,  # rclsid : GUID*
    Fiddle::TYPE_VOIDP,  # pUnkOuter : IUnknown* optional
    -Fiddle::TYPE_INT,  # dwClsContext : CLSCTX
    Fiddle::TYPE_VOIDP,  # riid : GUID*
    Fiddle::TYPE_VOIDP,  # ppv : void** out
  ],
  Fiddle::TYPE_INT)

#[link(name = "ole32")]
extern "system" {
    fn CoCreateInstance(
        rclsid: *const GUID,  // GUID*
        pUnkOuter: *mut core::ffi::c_void,  // IUnknown* optional
        dwClsContext: u32,  // CLSCTX
        riid: *const GUID,  // GUID*
        ppv: *mut *mut ()  // void** out
    ) -> i32;
}
// crates: windows-sys provides ready-made bindings for this API.

$sig = @"
[DllImport("OLE32.dll")]
public static extern int CoCreateInstance(ref Guid rclsid, IntPtr pUnkOuter, uint dwClsContext, ref Guid riid, IntPtr ppv);
"@
$api = Add-Type -MemberDefinition $sig -Name 'OLE32_CoCreateInstance' -Namespace Win32 -PassThru
# $api::CoCreateInstance(rclsid, pUnkOuter, dwClsContext, riid, ppv)

#uselib "OLE32.dll"
#func global CoCreateInstance "CoCreateInstance" sptr, sptr, sptr, sptr, sptr
; CoCreateInstance varptr(rclsid), pUnkOuter, dwClsContext, varptr(riid), ppv   ; 戻り値は stat
; rclsid : GUID* -> "sptr"
; pUnkOuter : IUnknown* optional -> "sptr"
; dwClsContext : CLSCTX -> "sptr"
; riid : GUID* -> "sptr"
; ppv : void** 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 (
	ole32 = windows.NewLazySystemDLL("OLE32.dll")
	procCoCreateInstance = ole32.NewProc("CoCreateInstance")
)

// rclsid (GUID*), pUnkOuter (IUnknown* optional), dwClsContext (CLSCTX), riid (GUID*), ppv (void** out)
r1, _, err := procCoCreateInstance.Call(
	uintptr(rclsid),
	uintptr(pUnkOuter),
	uintptr(dwClsContext),
	uintptr(riid),
	uintptr(ppv),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // HRESULT

function CoCreateInstance(
  rclsid: PGUID;   // GUID*
  pUnkOuter: Pointer;   // IUnknown* optional
  dwClsContext: DWORD;   // CLSCTX
  riid: PGUID;   // GUID*
  ppv: Pointer   // void** out
): Integer; stdcall;
  external 'OLE32.dll' name 'CoCreateInstance';

result := DllCall("OLE32\CoCreateInstance"
    , "Ptr", rclsid   ; GUID*
    , "Ptr", pUnkOuter   ; IUnknown* optional
    , "UInt", dwClsContext   ; CLSCTX
    , "Ptr", riid   ; GUID*
    , "Ptr", ppv   ; void** out
    , "Int")   ; return: HRESULT

●CoCreateInstance(rclsid, pUnkOuter, dwClsContext, riid, ppv) = DLL("OLE32.dll", "int CoCreateInstance(void*, void*, dword, void*, void*)")
# 呼び出し: CoCreateInstance(rclsid, pUnkOuter, dwClsContext, riid, ppv)
# rclsid : GUID* -> "void*"
# pUnkOuter : IUnknown* optional -> "void*"
# dwClsContext : CLSCTX -> "dword"
# riid : GUID* -> "void*"
# ppv : void** 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 "ole32" fn CoCreateInstance(
    rclsid: [*c]GUID, // GUID*
    pUnkOuter: ?*anyopaque, // IUnknown* optional
    dwClsContext: u32, // CLSCTX
    riid: [*c]GUID, // GUID*
    ppv: ?*anyopaque // void** out
) callconv(std.os.windows.WINAPI) i32;

proc CoCreateInstance(
    rclsid: ptr GUID,  # GUID*
    pUnkOuter: pointer,  # IUnknown* optional
    dwClsContext: uint32,  # CLSCTX
    riid: ptr GUID,  # GUID*
    ppv: pointer  # void** out
): int32 {.importc: "CoCreateInstance", stdcall, dynlib: "OLE32.dll".}

pragma(lib, "ole32");
extern(Windows)
int CoCreateInstance(
    GUID* rclsid,   // GUID*
    void* pUnkOuter,   // IUnknown* optional
    uint dwClsContext,   // CLSCTX
    GUID* riid,   // GUID*
    void** ppv   // void** out
);

ccall((:CoCreateInstance, "OLE32.dll"), stdcall, Int32,
      (Ptr{GUID}, Ptr{Cvoid}, UInt32, Ptr{GUID}, Ptr{Cvoid}),
      rclsid, pUnkOuter, dwClsContext, riid, ppv)
# rclsid : GUID* -> Ptr{GUID}
# pUnkOuter : IUnknown* optional -> Ptr{Cvoid}
# dwClsContext : CLSCTX -> UInt32
# riid : GUID* -> Ptr{GUID}
# ppv : void** out -> Ptr{Cvoid}
# stdcall は 32bit のみ意味を持つ(x64 では無視)。

local ffi = require("ffi")
ffi.cdef[[
int32_t CoCreateInstance(
    void* rclsid,
    void* pUnkOuter,
    uint32_t dwClsContext,
    void* riid,
    void** ppv);
]]
local ole32 = ffi.load("ole32")
-- ole32.CoCreateInstance(rclsid, pUnkOuter, dwClsContext, riid, ppv)
-- rclsid : GUID*
-- pUnkOuter : IUnknown* optional
-- dwClsContext : CLSCTX
-- riid : GUID*
-- ppv : void** 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('OLE32.dll');
const CoCreateInstance = lib.func('__stdcall', 'CoCreateInstance', 'int32_t', ['void *', 'void *', 'uint32_t', 'void *', 'void *']);
// CoCreateInstance(rclsid, pUnkOuter, dwClsContext, riid, ppv)
// rclsid : GUID* -> 'void *'
// pUnkOuter : IUnknown* optional -> 'void *'
// dwClsContext : CLSCTX -> 'uint32_t'
// riid : GUID* -> 'void *'
// ppv : void** out -> 'void *'
// 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", {
  CoCreateInstance: { parameters: ["pointer", "pointer", "u32", "pointer", "pointer"], result: "i32" },
});
// lib.symbols.CoCreateInstance(rclsid, pUnkOuter, dwClsContext, riid, ppv)
// rclsid : GUID* -> "pointer"
// pUnkOuter : IUnknown* optional -> "pointer"
// dwClsContext : CLSCTX -> "u32"
// riid : GUID* -> "pointer"
// ppv : void** 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 CoCreateInstance(
    void* rclsid,
    void* pUnkOuter,
    uint32_t dwClsContext,
    void* riid,
    void** ppv);
C, "OLE32.dll");
// $ffi->CoCreateInstance(rclsid, pUnkOuter, dwClsContext, riid, ppv);
// rclsid : GUID*
// pUnkOuter : IUnknown* optional
// dwClsContext : CLSCTX
// riid : GUID*
// ppv : void** 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 Ole32 extends StdCallLibrary {
    Ole32 INSTANCE = Native.load("ole32", Ole32.class);
    int CoCreateInstance(
        Pointer rclsid,   // GUID*
        Pointer pUnkOuter,   // IUnknown* optional
        int dwClsContext,   // CLSCTX
        Pointer riid,   // GUID*
        Pointer ppv   // void** out
    );
}

@[Link("ole32")]
lib LibOLE32
  fun CoCreateInstance = CoCreateInstance(
    rclsid : GUID*,   # GUID*
    pUnkOuter : Void*,   # IUnknown* optional
    dwClsContext : UInt32,   # CLSCTX
    riid : GUID*,   # GUID*
    ppv : Void**   # void** 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 CoCreateInstanceNative = Int32 Function(Pointer<Void>, Pointer<Void>, Uint32, Pointer<Void>, Pointer<Void>);
typedef CoCreateInstanceDart = int Function(Pointer<Void>, Pointer<Void>, int, Pointer<Void>, Pointer<Void>);
final CoCreateInstance = DynamicLibrary.open('OLE32.dll')
    .lookupFunction<CoCreateInstanceNative, CoCreateInstanceDart>('CoCreateInstance');
// rclsid : GUID* -> Pointer<Void>
// pUnkOuter : IUnknown* optional -> Pointer<Void>
// dwClsContext : CLSCTX -> Uint32
// riid : GUID* -> Pointer<Void>
// ppv : void** out -> Pointer<Void>
// 文字列は package:ffi の "...".toNativeUtf16()/toNativeUtf8() で変換。

{$mode objfpc}{$H+}
function CoCreateInstance(
  rclsid: PGUID;   // GUID*
  pUnkOuter: Pointer;   // IUnknown* optional
  dwClsContext: DWORD;   // CLSCTX
  riid: PGUID;   // GUID*
  ppv: Pointer   // void** out
): Integer; stdcall;
  external 'OLE32.dll' name 'CoCreateInstance';

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

foreign import stdcall safe "CoCreateInstance"
  c_CoCreateInstance :: Ptr () -> Ptr () -> Word32 -> Ptr () -> Ptr () -> IO Int32
-- rclsid : GUID* -> Ptr ()
-- pUnkOuter : IUnknown* optional -> Ptr ()
-- dwClsContext : CLSCTX -> Word32
-- riid : GUID* -> Ptr ()
-- ppv : void** out -> Ptr ()
-- 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 cocreateinstance =
  foreign "CoCreateInstance"
    ((ptr void) @-> (ptr void) @-> uint32_t @-> (ptr void) @-> (ptr void) @-> returning int32_t)
(* rclsid : GUID* -> (ptr void) *)
(* pUnkOuter : IUnknown* optional -> (ptr void) *)
(* dwClsContext : CLSCTX -> uint32_t *)
(* riid : GUID* -> (ptr void) *)
(* ppv : void** out -> (ptr void) *)
(* 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 ("CoCreateInstance" co-create-instance :convention :stdcall) :int32
  (rclsid :pointer)   ; GUID*
  (p-unk-outer :pointer)   ; IUnknown* optional
  (dw-cls-context :uint32)   ; CLSCTX
  (riid :pointer)   ; GUID*
  (ppv :pointer))   ; void** out
; isize/usize(INT_PTR/SIZE_T)は x64 前提で :int64/:uint64。x86 では :int32/:uint32。

use Win32::API;
my $CoCreateInstance = Win32::API::More->new('OLE32',
    'int CoCreateInstance(LPVOID rclsid, LPVOID pUnkOuter, DWORD dwClsContext, LPVOID riid, LPVOID ppv)');
# my $ret = $CoCreateInstance->Call($rclsid, $pUnkOuter, $dwClsContext, $riid, $ppv);
# rclsid : GUID* -> LPVOID
# pUnkOuter : IUnknown* optional -> LPVOID
# dwClsContext : CLSCTX -> DWORD
# riid : GUID* -> LPVOID
# ppv : void** out -> LPVOID
# 値渡し構造体は pack() した文字列、または Win32::API::Struct を使用。