AccessibleObjectFromPoint

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

HRESULT AccessibleObjectFromPoint(
    POINT ptScreen,
    IAccessible** ppacc,
    VARIANT* pvarChild
);

<DllImport("OLEACC.dll", ExactSpelling:=True)>
Public Shared Function AccessibleObjectFromPoint(
    ptScreen As POINT,   ' POINT
    ppacc As IntPtr,   ' IAccessible** out
    pvarChild As IntPtr   ' VARIANT* out
) As Integer
End Function

' ptScreen : POINT
' ppacc : IAccessible** out
' pvarChild : VARIANT* out
Declare PtrSafe Function AccessibleObjectFromPoint Lib "oleacc" ( _
    ByVal ptScreen As LongPtr, _
    ByVal ppacc As LongPtr, _
    ByVal pvarChild 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

AccessibleObjectFromPoint = ctypes.windll.oleacc.AccessibleObjectFromPoint
AccessibleObjectFromPoint.restype = ctypes.c_int
AccessibleObjectFromPoint.argtypes = [
    POINT,  # ptScreen : POINT
    ctypes.c_void_p,  # ppacc : IAccessible** out
    ctypes.c_void_p,  # pvarChild : VARIANT* out
]

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('OLEACC.dll')
AccessibleObjectFromPoint = Fiddle::Function.new(
  lib['AccessibleObjectFromPoint'],
  [
    Fiddle::TYPE_VOIDP,  # ptScreen : POINT
    Fiddle::TYPE_VOIDP,  # ppacc : IAccessible** out
    Fiddle::TYPE_VOIDP,  # pvarChild : VARIANT* out
  ],
  Fiddle::TYPE_INT)

#[link(name = "oleacc")]
extern "system" {
    fn AccessibleObjectFromPoint(
        ptScreen: POINT,  // POINT
        ppacc: *mut *mut core::ffi::c_void,  // IAccessible** out
        pvarChild: *mut VARIANT  // VARIANT* out
    ) -> i32;
}
// crates: windows-sys provides ready-made bindings for this API.

$sig = @"
[DllImport("OLEACC.dll")]
public static extern int AccessibleObjectFromPoint(POINT ptScreen, IntPtr ppacc, IntPtr pvarChild);
"@
$api = Add-Type -MemberDefinition $sig -Name 'OLEACC_AccessibleObjectFromPoint' -Namespace Win32 -PassThru
# $api::AccessibleObjectFromPoint(ptScreen, ppacc, pvarChild)

#uselib "OLEACC.dll"
#func global AccessibleObjectFromPoint "AccessibleObjectFromPoint" sptr, sptr, sptr
; AccessibleObjectFromPoint ptScreen, ppacc, varptr(pvarChild)   ; 戻り値は stat
; ptScreen : POINT -> "sptr"
; ppacc : IAccessible** out -> "sptr"
; pvarChild : VARIANT* out -> "sptr"
; ※値渡し構造体は直接渡せません。intにパック、または var で構造体変数を渡してください。
; ※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 (
	oleacc = windows.NewLazySystemDLL("OLEACC.dll")
	procAccessibleObjectFromPoint = oleacc.NewProc("AccessibleObjectFromPoint")
)

// ptScreen (POINT), ppacc (IAccessible** out), pvarChild (VARIANT* out)
r1, _, err := procAccessibleObjectFromPoint.Call(
	uintptr(ptScreen),
	uintptr(ppacc),
	uintptr(pvarChild),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // HRESULT

function AccessibleObjectFromPoint(
  ptScreen: POINT;   // POINT
  ppacc: Pointer;   // IAccessible** out
  pvarChild: Pointer   // VARIANT* out
): Integer; stdcall;
  external 'OLEACC.dll' name 'AccessibleObjectFromPoint';

result := DllCall("OLEACC\AccessibleObjectFromPoint"
    , "Ptr", ptScreen   ; POINT
    , "Ptr", ppacc   ; IAccessible** out
    , "Ptr", pvarChild   ; VARIANT* out
    , "Int")   ; return: HRESULT

●AccessibleObjectFromPoint(ptScreen, ppacc, pvarChild) = DLL("OLEACC.dll", "int AccessibleObjectFromPoint(void*, void*, void*)")
# 呼び出し: AccessibleObjectFromPoint(ptScreen, ppacc, pvarChild)
# ptScreen : POINT -> "void*"
# ppacc : IAccessible** out -> "void*"
# pvarChild : VARIANT* 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 "oleacc" fn AccessibleObjectFromPoint(
    ptScreen: POINT, // POINT
    ppacc: ?*anyopaque, // IAccessible** out
    pvarChild: [*c]VARIANT // VARIANT* out
) callconv(std.os.windows.WINAPI) i32;

proc AccessibleObjectFromPoint(
    ptScreen: POINT,  # POINT
    ppacc: pointer,  # IAccessible** out
    pvarChild: ptr VARIANT  # VARIANT* out
): int32 {.importc: "AccessibleObjectFromPoint", stdcall, dynlib: "OLEACC.dll".}

pragma(lib, "oleacc");
extern(Windows)
int AccessibleObjectFromPoint(
    POINT ptScreen,   // POINT
    void* ppacc,   // IAccessible** out
    VARIANT* pvarChild   // VARIANT* out
);

ccall((:AccessibleObjectFromPoint, "OLEACC.dll"), stdcall, Int32,
      (POINT, Ptr{Cvoid}, Ptr{VARIANT}),
      ptScreen, ppacc, pvarChild)
# ptScreen : POINT -> POINT
# ppacc : IAccessible** out -> Ptr{Cvoid}
# pvarChild : VARIANT* out -> Ptr{VARIANT}
# stdcall は 32bit のみ意味を持つ(x64 では無視)。

local ffi = require("ffi")
ffi.cdef[[
int32_t AccessibleObjectFromPoint(
    POINT ptScreen,
    void* ppacc,
    void* pvarChild);
]]
local oleacc = ffi.load("oleacc")
-- oleacc.AccessibleObjectFromPoint(ptScreen, ppacc, pvarChild)
-- ptScreen : POINT
-- ppacc : IAccessible** out
-- pvarChild : VARIANT* 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('OLEACC.dll');
const AccessibleObjectFromPoint = lib.func('__stdcall', 'AccessibleObjectFromPoint', 'int32_t', ['POINT', 'void *', 'void *']);
// AccessibleObjectFromPoint(ptScreen, ppacc, pvarChild)
// ptScreen : POINT -> 'POINT'
// ppacc : IAccessible** out -> 'void *'
// pvarChild : VARIANT* 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("OLEACC.dll", {
  AccessibleObjectFromPoint: { parameters: ["buffer", "pointer", "pointer"], result: "i32" },
});
// lib.symbols.AccessibleObjectFromPoint(ptScreen, ppacc, pvarChild)
// ptScreen : POINT -> "buffer"
// ppacc : IAccessible** out -> "pointer"
// pvarChild : VARIANT* 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 AccessibleObjectFromPoint(
    POINT ptScreen,
    void* ppacc,
    void* pvarChild);
C, "OLEACC.dll");
// $ffi->AccessibleObjectFromPoint(ptScreen, ppacc, pvarChild);
// ptScreen : POINT
// ppacc : IAccessible** out
// pvarChild : VARIANT* 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 Oleacc extends StdCallLibrary {
    Oleacc INSTANCE = Native.load("oleacc", Oleacc.class);
    int AccessibleObjectFromPoint(
        POINT /* extends Structure (by value) */ ptScreen,   // POINT
        Pointer ppacc,   // IAccessible** out
        Pointer pvarChild   // VARIANT* out
    );
}

@[Link("oleacc")]
lib LibOLEACC
  fun AccessibleObjectFromPoint = AccessibleObjectFromPoint(
    ptScreen : POINT,   # POINT
    ppacc : Void*,   # IAccessible** out
    pvarChild : VARIANT*   # VARIANT* 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 AccessibleObjectFromPointNative = Int32 Function(POINT, Pointer<Void>, Pointer<Void>);
typedef AccessibleObjectFromPointDart = int Function(int, Pointer<Void>, Pointer<Void>);
final AccessibleObjectFromPoint = DynamicLibrary.open('OLEACC.dll')
    .lookupFunction<AccessibleObjectFromPointNative, AccessibleObjectFromPointDart>('AccessibleObjectFromPoint');
// ptScreen : POINT -> POINT
// ppacc : IAccessible** out -> Pointer<Void>
// pvarChild : VARIANT* out -> Pointer<Void>
// 文字列は package:ffi の "...".toNativeUtf16()/toNativeUtf8() で変換。

{$mode objfpc}{$H+}
function AccessibleObjectFromPoint(
  ptScreen: POINT;   // POINT
  ppacc: Pointer;   // IAccessible** out
  pvarChild: Pointer   // VARIANT* out
): Integer; stdcall;
  external 'OLEACC.dll' name 'AccessibleObjectFromPoint';

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

foreign import stdcall safe "AccessibleObjectFromPoint"
  c_AccessibleObjectFromPoint :: POINT -> Ptr () -> Ptr () -> IO Int32
-- ptScreen : POINT -> POINT
-- ppacc : IAccessible** out -> Ptr ()
-- pvarChild : VARIANT* 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。
-- ※値渡し構造体は GHC FFI で直接渡せません。Ptr で渡すラッパ(C側)経由にしてください。

open Ctypes
open Foreign

let accessibleobjectfrompoint =
  foreign "AccessibleObjectFromPoint"
    (POINT @-> (ptr void) @-> (ptr void) @-> returning int32_t)
(* ptScreen : POINT -> POINT *)
(* ppacc : IAccessible** out -> (ptr void) *)
(* pvarChild : VARIANT* 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 oleacc (t "OLEACC.dll"))
(cffi:use-foreign-library oleacc)

(cffi:defcfun ("AccessibleObjectFromPoint" accessible-object-from-point :convention :stdcall) :int32
  (pt-screen (:struct point))   ; POINT
  (ppacc :pointer)   ; IAccessible** out
  (pvar-child :pointer))   ; VARIANT* out
; isize/usize(INT_PTR/SIZE_T)は x64 前提で :int64/:uint64。x86 では :int32/:uint32。

use Win32::API;
my $AccessibleObjectFromPoint = Win32::API::More->new('OLEACC',
    'int AccessibleObjectFromPoint(LPVOID ptScreen, LPVOID ppacc, LPVOID pvarChild)');
# my $ret = $AccessibleObjectFromPoint->Call($ptScreen, $ppacc, $pvarChild);
# ptScreen : POINT -> LPVOID
# ppacc : IAccessible** out -> LPVOID
# pvarChild : VARIANT* out -> LPVOID
# 値渡し構造体は pack() した文字列、または Win32::API::Struct を使用。