DragAcceptFiles

// SHELL32.dll
#include <windows.h>

void DragAcceptFiles(
    HWND hWnd,
    BOOL fAccept
);

<DllImport("SHELL32.dll", ExactSpelling:=True)>
Public Shared Sub DragAcceptFiles(
    hWnd As IntPtr,   ' HWND
    fAccept As Boolean   ' BOOL
)
End Sub

' hWnd : HWND
' fAccept : BOOL
Declare PtrSafe Sub DragAcceptFiles Lib "shell32" ( _
    ByVal hWnd As LongPtr, _
    ByVal fAccept As Long)
' VBA7前提(PtrSafe)。32bit Office では LongPtr→Long。Integer=16bit / Long=32bit / LongLong=64bit。

import ctypes
from ctypes import wintypes

DragAcceptFiles = ctypes.windll.shell32.DragAcceptFiles
DragAcceptFiles.restype = None
DragAcceptFiles.argtypes = [
    wintypes.HANDLE,  # hWnd : HWND
    wintypes.BOOL,  # fAccept : BOOL
]

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('SHELL32.dll')
DragAcceptFiles = Fiddle::Function.new(
  lib['DragAcceptFiles'],
  [
    Fiddle::TYPE_VOIDP,  # hWnd : HWND
    Fiddle::TYPE_INT,  # fAccept : BOOL
  ],
  Fiddle::TYPE_VOID)

#[link(name = "shell32")]
extern "system" {
    fn DragAcceptFiles(
        hWnd: *mut core::ffi::c_void,  // HWND
        fAccept: i32  // BOOL
    );
}
// crates: windows-sys provides ready-made bindings for this API.

$sig = @"
[DllImport("SHELL32.dll")]
public static extern void DragAcceptFiles(IntPtr hWnd, bool fAccept);
"@
$api = Add-Type -MemberDefinition $sig -Name 'SHELL32_DragAcceptFiles' -Namespace Win32 -PassThru
# $api::DragAcceptFiles(hWnd, fAccept)

#uselib "SHELL32.dll"
#func global DragAcceptFiles "DragAcceptFiles" sptr, sptr
; DragAcceptFiles hWnd, fAccept
; hWnd : HWND -> "sptr"
; fAccept : BOOL -> "sptr"

#uselib "SHELL32.dll"
#func global DragAcceptFiles "DragAcceptFiles" sptr, int
; DragAcceptFiles hWnd, fAccept
; hWnd : HWND -> "sptr"
; fAccept : BOOL -> "int"

; void DragAcceptFiles(HWND hWnd, BOOL fAccept)
#uselib "SHELL32.dll"
#func global DragAcceptFiles "DragAcceptFiles" intptr, int
; DragAcceptFiles hWnd, fAccept
; hWnd : HWND -> "intptr"
; fAccept : BOOL -> "int"

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

var (
	shell32 = windows.NewLazySystemDLL("SHELL32.dll")
	procDragAcceptFiles = shell32.NewProc("DragAcceptFiles")
)

// hWnd (HWND), fAccept (BOOL)
r1, _, err := procDragAcceptFiles.Call(
	uintptr(hWnd),
	uintptr(fAccept),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // void

procedure DragAcceptFiles(
  hWnd: THandle;   // HWND
  fAccept: BOOL   // BOOL
); stdcall;
  external 'SHELL32.dll' name 'DragAcceptFiles';

result := DllCall("SHELL32\DragAcceptFiles"
    , "Ptr", hWnd   ; HWND
    , "Int", fAccept   ; BOOL
    , "Int")   ; return: void

●DragAcceptFiles(hWnd, fAccept) = DLL("SHELL32.dll", "int DragAcceptFiles(void*, bool)")
# 呼び出し: DragAcceptFiles(hWnd, fAccept)
# hWnd : HWND -> "void*"
# fAccept : BOOL -> "bool"
# 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 "shell32" fn DragAcceptFiles(
    hWnd: ?*anyopaque, // HWND
    fAccept: i32 // BOOL
) callconv(std.os.windows.WINAPI) void;

proc DragAcceptFiles(
    hWnd: pointer,  # HWND
    fAccept: int32  # BOOL
) {.importc: "DragAcceptFiles", stdcall, dynlib: "SHELL32.dll".}

pragma(lib, "shell32");
extern(Windows)
void DragAcceptFiles(
    void* hWnd,   // HWND
    int fAccept   // BOOL
);

ccall((:DragAcceptFiles, "SHELL32.dll"), stdcall, Cvoid,
      (Ptr{Cvoid}, Int32),
      hWnd, fAccept)
# hWnd : HWND -> Ptr{Cvoid}
# fAccept : BOOL -> Int32
# stdcall は 32bit のみ意味を持つ(x64 では無視)。

local ffi = require("ffi")
ffi.cdef[[
void DragAcceptFiles(
    void* hWnd,
    int32_t fAccept);
]]
local shell32 = ffi.load("shell32")
-- shell32.DragAcceptFiles(hWnd, fAccept)
-- hWnd : HWND
-- fAccept : BOOL
-- 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('SHELL32.dll');
const DragAcceptFiles = lib.func('__stdcall', 'DragAcceptFiles', 'void', ['void *', 'int32_t']);
// DragAcceptFiles(hWnd, fAccept)
// hWnd : HWND -> 'void *'
// fAccept : BOOL -> 'int32_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("SHELL32.dll", {
  DragAcceptFiles: { parameters: ["pointer", "i32"], result: "void" },
});
// lib.symbols.DragAcceptFiles(hWnd, fAccept)
// hWnd : HWND -> "pointer"
// fAccept : BOOL -> "i32"
// 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
void DragAcceptFiles(
    void* hWnd,
    int32_t fAccept);
C, "SHELL32.dll");
// $ffi->DragAcceptFiles(hWnd, fAccept);
// hWnd : HWND
// fAccept : BOOL
// 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 Shell32 extends StdCallLibrary {
    Shell32 INSTANCE = Native.load("shell32", Shell32.class);
    void DragAcceptFiles(
        Pointer hWnd,   // HWND
        boolean fAccept   // BOOL
    );
}

@[Link("shell32")]
lib LibSHELL32
  fun DragAcceptFiles = DragAcceptFiles(
    hWnd : Void*,   # HWND
    fAccept : Int32   # BOOL
  ) : Void
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 DragAcceptFilesNative = Void Function(Pointer<Void>, Int32);
typedef DragAcceptFilesDart = void Function(Pointer<Void>, int);
final DragAcceptFiles = DynamicLibrary.open('SHELL32.dll')
    .lookupFunction<DragAcceptFilesNative, DragAcceptFilesDart>('DragAcceptFiles');
// hWnd : HWND -> Pointer<Void>
// fAccept : BOOL -> Int32
// 文字列は package:ffi の "...".toNativeUtf16()/toNativeUtf8() で変換。

{$mode objfpc}{$H+}
procedure DragAcceptFiles(
  hWnd: THandle;   // HWND
  fAccept: BOOL   // BOOL
); stdcall;
  external 'SHELL32.dll' name 'DragAcceptFiles';

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

foreign import stdcall safe "DragAcceptFiles"
  c_DragAcceptFiles :: Ptr () -> CInt -> IO ()
-- hWnd : HWND -> Ptr ()
-- fAccept : BOOL -> CInt
-- 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 dragacceptfiles =
  foreign "DragAcceptFiles"
    ((ptr void) @-> int32_t @-> returning void)
(* hWnd : HWND -> (ptr void) *)
(* fAccept : BOOL -> int32_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 shell32 (t "SHELL32.dll"))
(cffi:use-foreign-library shell32)

(cffi:defcfun ("DragAcceptFiles" drag-accept-files :convention :stdcall) :void
  (h-wnd :pointer)   ; HWND
  (f-accept :int32))   ; BOOL
; isize/usize(INT_PTR/SIZE_T)は x64 前提で :int64/:uint64。x86 では :int32/:uint32。

use Win32::API;
my $DragAcceptFiles = Win32::API::More->new('SHELL32',
    'void DragAcceptFiles(HANDLE hWnd, BOOL fAccept)');
# my $ret = $DragAcceptFiles->Call($hWnd, $fAccept);
# hWnd : HWND -> HANDLE
# fAccept : BOOL -> BOOL
# 値渡し構造体は pack() した文字列、または Win32::API::Struct を使用。