MonitorFromWindow

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

HMONITOR MonitorFromWindow(
    HWND hwnd,
    MONITOR_FROM_FLAGS dwFlags
);

<DllImport("USER32.dll", ExactSpelling:=True)>
Public Shared Function MonitorFromWindow(
    hwnd As IntPtr,   ' HWND
    dwFlags As UInteger   ' MONITOR_FROM_FLAGS
) As IntPtr
End Function

' hwnd : HWND
' dwFlags : MONITOR_FROM_FLAGS
Declare PtrSafe Function MonitorFromWindow Lib "user32" ( _
    ByVal hwnd As LongPtr, _
    ByVal dwFlags As Long) As LongPtr
' VBA7前提(PtrSafe)。32bit Office では LongPtr→Long。Integer=16bit / Long=32bit / LongLong=64bit。

import ctypes
from ctypes import wintypes

MonitorFromWindow = ctypes.windll.user32.MonitorFromWindow
MonitorFromWindow.restype = ctypes.c_void_p
MonitorFromWindow.argtypes = [
    wintypes.HANDLE,  # hwnd : HWND
    wintypes.DWORD,  # dwFlags : MONITOR_FROM_FLAGS
]

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('USER32.dll')
MonitorFromWindow = Fiddle::Function.new(
  lib['MonitorFromWindow'],
  [
    Fiddle::TYPE_VOIDP,  # hwnd : HWND
    -Fiddle::TYPE_INT,  # dwFlags : MONITOR_FROM_FLAGS
  ],
  Fiddle::TYPE_VOIDP)

#[link(name = "user32")]
extern "system" {
    fn MonitorFromWindow(
        hwnd: *mut core::ffi::c_void,  // HWND
        dwFlags: u32  // MONITOR_FROM_FLAGS
    ) -> *mut core::ffi::c_void;
}
// crates: windows-sys provides ready-made bindings for this API.

$sig = @"
[DllImport("USER32.dll")]
public static extern IntPtr MonitorFromWindow(IntPtr hwnd, uint dwFlags);
"@
$api = Add-Type -MemberDefinition $sig -Name 'USER32_MonitorFromWindow' -Namespace Win32 -PassThru
# $api::MonitorFromWindow(hwnd, dwFlags)

#uselib "USER32.dll"
#func global MonitorFromWindow "MonitorFromWindow" sptr, sptr
; MonitorFromWindow hwnd, dwFlags   ; 戻り値は stat
; hwnd : HWND -> "sptr"
; dwFlags : MONITOR_FROM_FLAGS -> "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 "USER32.dll"
#cfunc global MonitorFromWindow "MonitorFromWindow" sptr, int
; res = MonitorFromWindow(hwnd, dwFlags)
; hwnd : HWND -> "sptr"
; dwFlags : MONITOR_FROM_FLAGS -> "int"

; HMONITOR MonitorFromWindow(HWND hwnd, MONITOR_FROM_FLAGS dwFlags)
#uselib "USER32.dll"
#cfunc global MonitorFromWindow "MonitorFromWindow" intptr, int
; res = MonitorFromWindow(hwnd, dwFlags)
; hwnd : HWND -> "intptr"
; dwFlags : MONITOR_FROM_FLAGS -> "int"

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

var (
	user32 = windows.NewLazySystemDLL("USER32.dll")
	procMonitorFromWindow = user32.NewProc("MonitorFromWindow")
)

// hwnd (HWND), dwFlags (MONITOR_FROM_FLAGS)
r1, _, err := procMonitorFromWindow.Call(
	uintptr(hwnd),
	uintptr(dwFlags),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // HMONITOR

function MonitorFromWindow(
  hwnd: THandle;   // HWND
  dwFlags: DWORD   // MONITOR_FROM_FLAGS
): THandle; stdcall;
  external 'USER32.dll' name 'MonitorFromWindow';

result := DllCall("USER32\MonitorFromWindow"
    , "Ptr", hwnd   ; HWND
    , "UInt", dwFlags   ; MONITOR_FROM_FLAGS
    , "Ptr")   ; return: HMONITOR

●MonitorFromWindow(hwnd, dwFlags) = DLL("USER32.dll", "void* MonitorFromWindow(void*, dword)")
# 呼び出し: MonitorFromWindow(hwnd, dwFlags)
# hwnd : HWND -> "void*"
# dwFlags : MONITOR_FROM_FLAGS -> "dword"
# 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 MonitorFromWindow(
    hwnd: ?*anyopaque, // HWND
    dwFlags: u32 // MONITOR_FROM_FLAGS
) callconv(std.os.windows.WINAPI) ?*anyopaque;

proc MonitorFromWindow(
    hwnd: pointer,  # HWND
    dwFlags: uint32  # MONITOR_FROM_FLAGS
): pointer {.importc: "MonitorFromWindow", stdcall, dynlib: "USER32.dll".}

pragma(lib, "user32");
extern(Windows)
void* MonitorFromWindow(
    void* hwnd,   // HWND
    uint dwFlags   // MONITOR_FROM_FLAGS
);

ccall((:MonitorFromWindow, "USER32.dll"), stdcall, Ptr{Cvoid},
      (Ptr{Cvoid}, UInt32),
      hwnd, dwFlags)
# hwnd : HWND -> Ptr{Cvoid}
# dwFlags : MONITOR_FROM_FLAGS -> UInt32
# stdcall は 32bit のみ意味を持つ(x64 では無視)。

local ffi = require("ffi")
ffi.cdef[[
void* MonitorFromWindow(
    void* hwnd,
    uint32_t dwFlags);
]]
local user32 = ffi.load("user32")
-- user32.MonitorFromWindow(hwnd, dwFlags)
-- hwnd : HWND
-- dwFlags : MONITOR_FROM_FLAGS
-- 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 MonitorFromWindow = lib.func('__stdcall', 'MonitorFromWindow', 'void *', ['void *', 'uint32_t']);
// MonitorFromWindow(hwnd, dwFlags)
// hwnd : HWND -> 'void *'
// dwFlags : MONITOR_FROM_FLAGS -> '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", {
  MonitorFromWindow: { parameters: ["pointer", "u32"], result: "pointer" },
});
// lib.symbols.MonitorFromWindow(hwnd, dwFlags)
// hwnd : HWND -> "pointer"
// dwFlags : MONITOR_FROM_FLAGS -> "u32"
// 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* MonitorFromWindow(
    void* hwnd,
    uint32_t dwFlags);
C, "USER32.dll");
// $ffi->MonitorFromWindow(hwnd, dwFlags);
// hwnd : HWND
// dwFlags : MONITOR_FROM_FLAGS
// 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);
    Pointer MonitorFromWindow(
        Pointer hwnd,   // HWND
        int dwFlags   // MONITOR_FROM_FLAGS
    );
}

@[Link("user32")]
lib LibUSER32
  fun MonitorFromWindow = MonitorFromWindow(
    hwnd : Void*,   # HWND
    dwFlags : UInt32   # MONITOR_FROM_FLAGS
  ) : 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 MonitorFromWindowNative = Pointer<Void> Function(Pointer<Void>, Uint32);
typedef MonitorFromWindowDart = Pointer<Void> Function(Pointer<Void>, int);
final MonitorFromWindow = DynamicLibrary.open('USER32.dll')
    .lookupFunction<MonitorFromWindowNative, MonitorFromWindowDart>('MonitorFromWindow');
// hwnd : HWND -> Pointer<Void>
// dwFlags : MONITOR_FROM_FLAGS -> Uint32
// 文字列は package:ffi の "...".toNativeUtf16()/toNativeUtf8() で変換。

{$mode objfpc}{$H+}
function MonitorFromWindow(
  hwnd: THandle;   // HWND
  dwFlags: DWORD   // MONITOR_FROM_FLAGS
): THandle; stdcall;
  external 'USER32.dll' name 'MonitorFromWindow';

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

foreign import stdcall safe "MonitorFromWindow"
  c_MonitorFromWindow :: Ptr () -> Word32 -> IO (Ptr ())
-- hwnd : HWND -> Ptr ()
-- dwFlags : MONITOR_FROM_FLAGS -> 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 monitorfromwindow =
  foreign "MonitorFromWindow"
    ((ptr void) @-> uint32_t @-> returning (ptr void))
(* hwnd : HWND -> (ptr void) *)
(* dwFlags : MONITOR_FROM_FLAGS -> 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 ("MonitorFromWindow" monitor-from-window :convention :stdcall) :pointer
  (hwnd :pointer)   ; HWND
  (dw-flags :uint32))   ; MONITOR_FROM_FLAGS
; isize/usize(INT_PTR/SIZE_T)は x64 前提で :int64/:uint64。x86 では :int32/:uint32。

use Win32::API;
my $MonitorFromWindow = Win32::API::More->new('USER32',
    'HANDLE MonitorFromWindow(HANDLE hwnd, DWORD dwFlags)');
# my $ret = $MonitorFromWindow->Call($hwnd, $dwFlags);
# hwnd : HWND -> HANDLE
# dwFlags : MONITOR_FROM_FLAGS -> DWORD
# 値渡し構造体は pack() した文字列、または Win32::API::Struct を使用。