CoIsHandlerConnected

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

BOOL CoIsHandlerConnected(
    IUnknown* pUnk
);

<DllImport("OLE32.dll", ExactSpelling:=True)>
Public Shared Function CoIsHandlerConnected(
    pUnk As IntPtr   ' IUnknown*
) As <MarshalAs(UnmanagedType.Bool)> Boolean
End Function

' pUnk : IUnknown*
Declare PtrSafe Function CoIsHandlerConnected Lib "ole32" ( _
    ByVal pUnk 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

CoIsHandlerConnected = ctypes.windll.ole32.CoIsHandlerConnected
CoIsHandlerConnected.restype = wintypes.BOOL
CoIsHandlerConnected.argtypes = [
    ctypes.c_void_p,  # pUnk : IUnknown*
]

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('OLE32.dll')
CoIsHandlerConnected = Fiddle::Function.new(
  lib['CoIsHandlerConnected'],
  [
    Fiddle::TYPE_VOIDP,  # pUnk : IUnknown*
  ],
  Fiddle::TYPE_INT)

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

$sig = @"
[return: MarshalAs(UnmanagedType.Bool)]
[DllImport("OLE32.dll")]
public static extern bool CoIsHandlerConnected(IntPtr pUnk);
"@
$api = Add-Type -MemberDefinition $sig -Name 'OLE32_CoIsHandlerConnected' -Namespace Win32 -PassThru
# $api::CoIsHandlerConnected(pUnk)

#uselib "OLE32.dll"
#func global CoIsHandlerConnected "CoIsHandlerConnected" sptr
; CoIsHandlerConnected pUnk   ; 戻り値は stat
; pUnk : IUnknown* -> "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 CoIsHandlerConnected "CoIsHandlerConnected" sptr
; res = CoIsHandlerConnected(pUnk)
; pUnk : IUnknown* -> "sptr"

; BOOL CoIsHandlerConnected(IUnknown* pUnk)
#uselib "OLE32.dll"
#cfunc global CoIsHandlerConnected "CoIsHandlerConnected" intptr
; res = CoIsHandlerConnected(pUnk)
; pUnk : IUnknown* -> "intptr"

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

var (
	ole32 = windows.NewLazySystemDLL("OLE32.dll")
	procCoIsHandlerConnected = ole32.NewProc("CoIsHandlerConnected")
)

// pUnk (IUnknown*)
r1, _, err := procCoIsHandlerConnected.Call(
	uintptr(pUnk),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // BOOL

function CoIsHandlerConnected(
  pUnk: Pointer   // IUnknown*
): BOOL; stdcall;
  external 'OLE32.dll' name 'CoIsHandlerConnected';

result := DllCall("OLE32\CoIsHandlerConnected"
    , "Ptr", pUnk   ; IUnknown*
    , "Int")   ; return: BOOL

●CoIsHandlerConnected(pUnk) = DLL("OLE32.dll", "bool CoIsHandlerConnected(void*)")
# 呼び出し: CoIsHandlerConnected(pUnk)
# pUnk : IUnknown* -> "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 CoIsHandlerConnected(
    pUnk: ?*anyopaque // IUnknown*
) callconv(std.os.windows.WINAPI) i32;

proc CoIsHandlerConnected(
    pUnk: pointer  # IUnknown*
): int32 {.importc: "CoIsHandlerConnected", stdcall, dynlib: "OLE32.dll".}

pragma(lib, "ole32");
extern(Windows)
int CoIsHandlerConnected(
    void* pUnk   // IUnknown*
);

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

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

{$mode objfpc}{$H+}
function CoIsHandlerConnected(
  pUnk: Pointer   // IUnknown*
): BOOL; stdcall;
  external 'OLE32.dll' name 'CoIsHandlerConnected';

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

foreign import stdcall safe "CoIsHandlerConnected"
  c_CoIsHandlerConnected :: Ptr () -> IO CInt
-- pUnk : IUnknown* -> 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 coishandlerconnected =
  foreign "CoIsHandlerConnected"
    ((ptr void) @-> returning int32_t)
(* pUnk : IUnknown* -> (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 ("CoIsHandlerConnected" co-is-handler-connected :convention :stdcall) :int32
  (p-unk :pointer))   ; IUnknown*
; isize/usize(INT_PTR/SIZE_T)は x64 前提で :int64/:uint64。x86 では :int32/:uint32。

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