CoSwitchCallContext

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

HRESULT CoSwitchCallContext(
    IUnknown* pNewObject,   // optional
    IUnknown** ppOldObject
);

<DllImport("OLE32.dll", ExactSpelling:=True)>
Public Shared Function CoSwitchCallContext(
    pNewObject As IntPtr,   ' IUnknown* optional
    ppOldObject As IntPtr   ' IUnknown** out
) As Integer
End Function

' pNewObject : IUnknown* optional
' ppOldObject : IUnknown** out
Declare PtrSafe Function CoSwitchCallContext Lib "ole32" ( _
    ByVal pNewObject As LongPtr, _
    ByVal ppOldObject 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

CoSwitchCallContext = ctypes.windll.ole32.CoSwitchCallContext
CoSwitchCallContext.restype = ctypes.c_int
CoSwitchCallContext.argtypes = [
    ctypes.c_void_p,  # pNewObject : IUnknown* optional
    ctypes.c_void_p,  # ppOldObject : IUnknown** out
]

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('OLE32.dll')
CoSwitchCallContext = Fiddle::Function.new(
  lib['CoSwitchCallContext'],
  [
    Fiddle::TYPE_VOIDP,  # pNewObject : IUnknown* optional
    Fiddle::TYPE_VOIDP,  # ppOldObject : IUnknown** out
  ],
  Fiddle::TYPE_INT)

#[link(name = "ole32")]
extern "system" {
    fn CoSwitchCallContext(
        pNewObject: *mut core::ffi::c_void,  // IUnknown* optional
        ppOldObject: *mut *mut core::ffi::c_void  // IUnknown** out
    ) -> i32;
}
// crates: windows-sys provides ready-made bindings for this API.

$sig = @"
[DllImport("OLE32.dll")]
public static extern int CoSwitchCallContext(IntPtr pNewObject, IntPtr ppOldObject);
"@
$api = Add-Type -MemberDefinition $sig -Name 'OLE32_CoSwitchCallContext' -Namespace Win32 -PassThru
# $api::CoSwitchCallContext(pNewObject, ppOldObject)

#uselib "OLE32.dll"
#func global CoSwitchCallContext "CoSwitchCallContext" sptr, sptr
; CoSwitchCallContext pNewObject, ppOldObject   ; 戻り値は stat
; pNewObject : IUnknown* optional -> "sptr"
; ppOldObject : IUnknown** 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。

#uselib "OLE32.dll"
#cfunc global CoSwitchCallContext "CoSwitchCallContext" sptr, sptr
; res = CoSwitchCallContext(pNewObject, ppOldObject)
; pNewObject : IUnknown* optional -> "sptr"
; ppOldObject : IUnknown** out -> "sptr"

; HRESULT CoSwitchCallContext(IUnknown* pNewObject, IUnknown** ppOldObject)
#uselib "OLE32.dll"
#cfunc global CoSwitchCallContext "CoSwitchCallContext" intptr, intptr
; res = CoSwitchCallContext(pNewObject, ppOldObject)
; pNewObject : IUnknown* optional -> "intptr"
; ppOldObject : IUnknown** out -> "intptr"

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

var (
	ole32 = windows.NewLazySystemDLL("OLE32.dll")
	procCoSwitchCallContext = ole32.NewProc("CoSwitchCallContext")
)

// pNewObject (IUnknown* optional), ppOldObject (IUnknown** out)
r1, _, err := procCoSwitchCallContext.Call(
	uintptr(pNewObject),
	uintptr(ppOldObject),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // HRESULT

function CoSwitchCallContext(
  pNewObject: Pointer;   // IUnknown* optional
  ppOldObject: Pointer   // IUnknown** out
): Integer; stdcall;
  external 'OLE32.dll' name 'CoSwitchCallContext';

result := DllCall("OLE32\CoSwitchCallContext"
    , "Ptr", pNewObject   ; IUnknown* optional
    , "Ptr", ppOldObject   ; IUnknown** out
    , "Int")   ; return: HRESULT

●CoSwitchCallContext(pNewObject, ppOldObject) = DLL("OLE32.dll", "int CoSwitchCallContext(void*, void*)")
# 呼び出し: CoSwitchCallContext(pNewObject, ppOldObject)
# pNewObject : IUnknown* optional -> "void*"
# ppOldObject : IUnknown** 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 CoSwitchCallContext(
    pNewObject: ?*anyopaque, // IUnknown* optional
    ppOldObject: ?*anyopaque // IUnknown** out
) callconv(std.os.windows.WINAPI) i32;

proc CoSwitchCallContext(
    pNewObject: pointer,  # IUnknown* optional
    ppOldObject: pointer  # IUnknown** out
): int32 {.importc: "CoSwitchCallContext", stdcall, dynlib: "OLE32.dll".}

pragma(lib, "ole32");
extern(Windows)
int CoSwitchCallContext(
    void* pNewObject,   // IUnknown* optional
    void* ppOldObject   // IUnknown** out
);

ccall((:CoSwitchCallContext, "OLE32.dll"), stdcall, Int32,
      (Ptr{Cvoid}, Ptr{Cvoid}),
      pNewObject, ppOldObject)
# pNewObject : IUnknown* optional -> Ptr{Cvoid}
# ppOldObject : IUnknown** 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 CoSwitchCallContext(
    void* pNewObject,
    void* ppOldObject);
]]
local ole32 = ffi.load("ole32")
-- ole32.CoSwitchCallContext(pNewObject, ppOldObject)
-- pNewObject : IUnknown* optional
-- ppOldObject : IUnknown** 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 CoSwitchCallContext = lib.func('__stdcall', 'CoSwitchCallContext', 'int32_t', ['void *', 'void *']);
// CoSwitchCallContext(pNewObject, ppOldObject)
// pNewObject : IUnknown* optional -> 'void *'
// ppOldObject : IUnknown** 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", {
  CoSwitchCallContext: { parameters: ["pointer", "pointer"], result: "i32" },
});
// lib.symbols.CoSwitchCallContext(pNewObject, ppOldObject)
// pNewObject : IUnknown* optional -> "pointer"
// ppOldObject : IUnknown** 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 CoSwitchCallContext(
    void* pNewObject,
    void* ppOldObject);
C, "OLE32.dll");
// $ffi->CoSwitchCallContext(pNewObject, ppOldObject);
// pNewObject : IUnknown* optional
// ppOldObject : IUnknown** 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 CoSwitchCallContext(
        Pointer pNewObject,   // IUnknown* optional
        Pointer ppOldObject   // IUnknown** out
    );
}

@[Link("ole32")]
lib LibOLE32
  fun CoSwitchCallContext = CoSwitchCallContext(
    pNewObject : Void*,   # IUnknown* optional
    ppOldObject : Void*   # IUnknown** 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 CoSwitchCallContextNative = Int32 Function(Pointer<Void>, Pointer<Void>);
typedef CoSwitchCallContextDart = int Function(Pointer<Void>, Pointer<Void>);
final CoSwitchCallContext = DynamicLibrary.open('OLE32.dll')
    .lookupFunction<CoSwitchCallContextNative, CoSwitchCallContextDart>('CoSwitchCallContext');
// pNewObject : IUnknown* optional -> Pointer<Void>
// ppOldObject : IUnknown** out -> Pointer<Void>
// 文字列は package:ffi の "...".toNativeUtf16()/toNativeUtf8() で変換。

{$mode objfpc}{$H+}
function CoSwitchCallContext(
  pNewObject: Pointer;   // IUnknown* optional
  ppOldObject: Pointer   // IUnknown** out
): Integer; stdcall;
  external 'OLE32.dll' name 'CoSwitchCallContext';

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

foreign import stdcall safe "CoSwitchCallContext"
  c_CoSwitchCallContext :: Ptr () -> Ptr () -> IO Int32
-- pNewObject : IUnknown* optional -> Ptr ()
-- ppOldObject : IUnknown** 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 coswitchcallcontext =
  foreign "CoSwitchCallContext"
    ((ptr void) @-> (ptr void) @-> returning int32_t)
(* pNewObject : IUnknown* optional -> (ptr void) *)
(* ppOldObject : IUnknown** 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 ("CoSwitchCallContext" co-switch-call-context :convention :stdcall) :int32
  (p-new-object :pointer)   ; IUnknown* optional
  (pp-old-object :pointer))   ; IUnknown** out
; isize/usize(INT_PTR/SIZE_T)は x64 前提で :int64/:uint64。x86 では :int32/:uint32。

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