GetWindowDisplayAffinity

// USER32.dll
#include <windows.h>

BOOL GetWindowDisplayAffinity(
    HWND hWnd,
    DWORD* pdwAffinity
);

<DllImport("USER32.dll", SetLastError:=True, ExactSpelling:=True)>
Public Shared Function GetWindowDisplayAffinity(
    hWnd As IntPtr,   ' HWND
    <Out> ByRef pdwAffinity As UInteger   ' DWORD* out
) As <MarshalAs(UnmanagedType.Bool)> Boolean
End Function

' hWnd : HWND
' pdwAffinity : DWORD* out
Declare PtrSafe Function GetWindowDisplayAffinity Lib "user32" ( _
    ByVal hWnd As LongPtr, _
    ByRef pdwAffinity As Long) As Long
' VBA7前提(PtrSafe)。32bit Office では LongPtr→Long。Integer=16bit / Long=32bit / LongLong=64bit。

import ctypes
from ctypes import wintypes

GetWindowDisplayAffinity = ctypes.windll.user32.GetWindowDisplayAffinity
GetWindowDisplayAffinity.restype = wintypes.BOOL
GetWindowDisplayAffinity.argtypes = [
    wintypes.HANDLE,  # hWnd : HWND
    ctypes.POINTER(wintypes.DWORD),  # pdwAffinity : DWORD* out
]
# GetLastError: use ctypes.GetLastError() (or ctypes.WinDLL(use_last_error=True))

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('USER32.dll')
GetWindowDisplayAffinity = Fiddle::Function.new(
  lib['GetWindowDisplayAffinity'],
  [
    Fiddle::TYPE_VOIDP,  # hWnd : HWND
    Fiddle::TYPE_VOIDP,  # pdwAffinity : DWORD* out
  ],
  Fiddle::TYPE_INT)

#[link(name = "user32")]
extern "system" {
    fn GetWindowDisplayAffinity(
        hWnd: *mut core::ffi::c_void,  // HWND
        pdwAffinity: *mut u32  // DWORD* out
    ) -> i32;
}
// crates: windows-sys provides ready-made bindings for this API.

$sig = @"
[return: MarshalAs(UnmanagedType.Bool)]
[DllImport("USER32.dll", SetLastError = true)]
public static extern bool GetWindowDisplayAffinity(IntPtr hWnd, out uint pdwAffinity);
"@
$api = Add-Type -MemberDefinition $sig -Name 'USER32_GetWindowDisplayAffinity' -Namespace Win32 -PassThru
# $api::GetWindowDisplayAffinity(hWnd, pdwAffinity)

#uselib "USER32.dll"
#func global GetWindowDisplayAffinity "GetWindowDisplayAffinity" sptr, sptr
; GetWindowDisplayAffinity hWnd, varptr(pdwAffinity)   ; 戻り値は stat
; hWnd : HWND -> "sptr"
; pdwAffinity : DWORD* 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 (
	user32 = windows.NewLazySystemDLL("USER32.dll")
	procGetWindowDisplayAffinity = user32.NewProc("GetWindowDisplayAffinity")
)

// hWnd (HWND), pdwAffinity (DWORD* out)
r1, _, err := procGetWindowDisplayAffinity.Call(
	uintptr(hWnd),
	uintptr(pdwAffinity),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // BOOL

function GetWindowDisplayAffinity(
  hWnd: THandle;   // HWND
  pdwAffinity: Pointer   // DWORD* out
): BOOL; stdcall;
  external 'USER32.dll' name 'GetWindowDisplayAffinity';

result := DllCall("USER32\GetWindowDisplayAffinity"
    , "Ptr", hWnd   ; HWND
    , "Ptr", pdwAffinity   ; DWORD* out
    , "Int")   ; return: BOOL

●GetWindowDisplayAffinity(hWnd, pdwAffinity) = DLL("USER32.dll", "bool GetWindowDisplayAffinity(void*, void*)")
# 呼び出し: GetWindowDisplayAffinity(hWnd, pdwAffinity)
# hWnd : HWND -> "void*"
# pdwAffinity : DWORD* 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 "user32" fn GetWindowDisplayAffinity(
    hWnd: ?*anyopaque, // HWND
    pdwAffinity: [*c]u32 // DWORD* out
) callconv(std.os.windows.WINAPI) i32;

proc GetWindowDisplayAffinity(
    hWnd: pointer,  # HWND
    pdwAffinity: ptr uint32  # DWORD* out
): int32 {.importc: "GetWindowDisplayAffinity", stdcall, dynlib: "USER32.dll".}

pragma(lib, "user32");
extern(Windows)
int GetWindowDisplayAffinity(
    void* hWnd,   // HWND
    uint* pdwAffinity   // DWORD* out
);

ccall((:GetWindowDisplayAffinity, "USER32.dll"), stdcall, Int32,
      (Ptr{Cvoid}, Ptr{UInt32}),
      hWnd, pdwAffinity)
# hWnd : HWND -> Ptr{Cvoid}
# pdwAffinity : DWORD* out -> Ptr{UInt32}
# stdcall は 32bit のみ意味を持つ(x64 では無視)。

local ffi = require("ffi")
ffi.cdef[[
int32_t GetWindowDisplayAffinity(
    void* hWnd,
    uint32_t* pdwAffinity);
]]
local user32 = ffi.load("user32")
-- user32.GetWindowDisplayAffinity(hWnd, pdwAffinity)
-- hWnd : HWND
-- pdwAffinity : DWORD* 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('USER32.dll');
const GetWindowDisplayAffinity = lib.func('__stdcall', 'GetWindowDisplayAffinity', 'int32_t', ['void *', 'uint32_t *']);
// GetWindowDisplayAffinity(hWnd, pdwAffinity)
// hWnd : HWND -> 'void *'
// pdwAffinity : DWORD* out -> 'uint32_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("USER32.dll", {
  GetWindowDisplayAffinity: { parameters: ["pointer", "pointer"], result: "i32" },
});
// lib.symbols.GetWindowDisplayAffinity(hWnd, pdwAffinity)
// hWnd : HWND -> "pointer"
// pdwAffinity : DWORD* 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 GetWindowDisplayAffinity(
    void* hWnd,
    uint32_t* pdwAffinity);
C, "USER32.dll");
// $ffi->GetWindowDisplayAffinity(hWnd, pdwAffinity);
// hWnd : HWND
// pdwAffinity : DWORD* 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 User32 extends StdCallLibrary {
    User32 INSTANCE = Native.load("user32", User32.class);
    boolean GetWindowDisplayAffinity(
        Pointer hWnd,   // HWND
        IntByReference pdwAffinity   // DWORD* out
    );
}

@[Link("user32")]
lib LibUSER32
  fun GetWindowDisplayAffinity = GetWindowDisplayAffinity(
    hWnd : Void*,   # HWND
    pdwAffinity : UInt32*   # DWORD* 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 GetWindowDisplayAffinityNative = Int32 Function(Pointer<Void>, Pointer<Uint32>);
typedef GetWindowDisplayAffinityDart = int Function(Pointer<Void>, Pointer<Uint32>);
final GetWindowDisplayAffinity = DynamicLibrary.open('USER32.dll')
    .lookupFunction<GetWindowDisplayAffinityNative, GetWindowDisplayAffinityDart>('GetWindowDisplayAffinity');
// hWnd : HWND -> Pointer<Void>
// pdwAffinity : DWORD* out -> Pointer<Uint32>
// 文字列は package:ffi の "...".toNativeUtf16()/toNativeUtf8() で変換。

{$mode objfpc}{$H+}
function GetWindowDisplayAffinity(
  hWnd: THandle;   // HWND
  pdwAffinity: Pointer   // DWORD* out
): BOOL; stdcall;
  external 'USER32.dll' name 'GetWindowDisplayAffinity';

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

foreign import stdcall safe "GetWindowDisplayAffinity"
  c_GetWindowDisplayAffinity :: Ptr () -> Ptr Word32 -> IO CInt
-- hWnd : HWND -> Ptr ()
-- pdwAffinity : DWORD* out -> Ptr Word32
-- 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 getwindowdisplayaffinity =
  foreign "GetWindowDisplayAffinity"
    ((ptr void) @-> (ptr uint32_t) @-> returning int32_t)
(* hWnd : HWND -> (ptr void) *)
(* pdwAffinity : DWORD* out -> (ptr uint32_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 user32 (t "USER32.dll"))
(cffi:use-foreign-library user32)

(cffi:defcfun ("GetWindowDisplayAffinity" get-window-display-affinity :convention :stdcall) :int32
  (h-wnd :pointer)   ; HWND
  (pdw-affinity :pointer))   ; DWORD* out
; isize/usize(INT_PTR/SIZE_T)は x64 前提で :int64/:uint64。x86 では :int32/:uint32。

use Win32::API;
my $GetWindowDisplayAffinity = Win32::API::More->new('USER32',
    'BOOL GetWindowDisplayAffinity(HANDLE hWnd, LPVOID pdwAffinity)');
# my $ret = $GetWindowDisplayAffinity->Call($hWnd, $pdwAffinity);
# hWnd : HWND -> HANDLE
# pdwAffinity : DWORD* out -> LPVOID
# 値渡し構造体は pack() した文字列、または Win32::API::Struct を使用。