ShowWindow

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

BOOL ShowWindow(
    HWND hWnd,
    SHOW_WINDOW_CMD nCmdShow
);

<DllImport("USER32.dll", ExactSpelling:=True)>
Public Shared Function ShowWindow(
    hWnd As IntPtr,   ' HWND
    nCmdShow As Integer   ' SHOW_WINDOW_CMD
) As <MarshalAs(UnmanagedType.Bool)> Boolean
End Function

' hWnd : HWND
' nCmdShow : SHOW_WINDOW_CMD
Declare PtrSafe Function ShowWindow Lib "user32" ( _
    ByVal hWnd As LongPtr, _
    ByVal nCmdShow 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

ShowWindow = ctypes.windll.user32.ShowWindow
ShowWindow.restype = wintypes.BOOL
ShowWindow.argtypes = [
    wintypes.HANDLE,  # hWnd : HWND
    ctypes.c_int,  # nCmdShow : SHOW_WINDOW_CMD
]

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('USER32.dll')
ShowWindow = Fiddle::Function.new(
  lib['ShowWindow'],
  [
    Fiddle::TYPE_VOIDP,  # hWnd : HWND
    Fiddle::TYPE_INT,  # nCmdShow : SHOW_WINDOW_CMD
  ],
  Fiddle::TYPE_INT)

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

$sig = @"
[return: MarshalAs(UnmanagedType.Bool)]
[DllImport("USER32.dll")]
public static extern bool ShowWindow(IntPtr hWnd, int nCmdShow);
"@
$api = Add-Type -MemberDefinition $sig -Name 'USER32_ShowWindow' -Namespace Win32 -PassThru
# $api::ShowWindow(hWnd, nCmdShow)

#uselib "USER32.dll"
#func global ShowWindow "ShowWindow" sptr, sptr
; ShowWindow hWnd, nCmdShow   ; 戻り値は stat
; hWnd : HWND -> "sptr"
; nCmdShow : SHOW_WINDOW_CMD -> "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 ShowWindow "ShowWindow" sptr, int
; res = ShowWindow(hWnd, nCmdShow)
; hWnd : HWND -> "sptr"
; nCmdShow : SHOW_WINDOW_CMD -> "int"

; BOOL ShowWindow(HWND hWnd, SHOW_WINDOW_CMD nCmdShow)
#uselib "USER32.dll"
#cfunc global ShowWindow "ShowWindow" intptr, int
; res = ShowWindow(hWnd, nCmdShow)
; hWnd : HWND -> "intptr"
; nCmdShow : SHOW_WINDOW_CMD -> "int"

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

var (
	user32 = windows.NewLazySystemDLL("USER32.dll")
	procShowWindow = user32.NewProc("ShowWindow")
)

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

function ShowWindow(
  hWnd: THandle;   // HWND
  nCmdShow: Integer   // SHOW_WINDOW_CMD
): BOOL; stdcall;
  external 'USER32.dll' name 'ShowWindow';

result := DllCall("USER32\ShowWindow"
    , "Ptr", hWnd   ; HWND
    , "Int", nCmdShow   ; SHOW_WINDOW_CMD
    , "Int")   ; return: BOOL

●ShowWindow(hWnd, nCmdShow) = DLL("USER32.dll", "bool ShowWindow(void*, int)")
# 呼び出し: ShowWindow(hWnd, nCmdShow)
# hWnd : HWND -> "void*"
# nCmdShow : SHOW_WINDOW_CMD -> "int"
# 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 ShowWindow(
    hWnd: ?*anyopaque, // HWND
    nCmdShow: i32 // SHOW_WINDOW_CMD
) callconv(std.os.windows.WINAPI) i32;

proc ShowWindow(
    hWnd: pointer,  # HWND
    nCmdShow: int32  # SHOW_WINDOW_CMD
): int32 {.importc: "ShowWindow", stdcall, dynlib: "USER32.dll".}

pragma(lib, "user32");
extern(Windows)
int ShowWindow(
    void* hWnd,   // HWND
    int nCmdShow   // SHOW_WINDOW_CMD
);

ccall((:ShowWindow, "USER32.dll"), stdcall, Int32,
      (Ptr{Cvoid}, Int32),
      hWnd, nCmdShow)
# hWnd : HWND -> Ptr{Cvoid}
# nCmdShow : SHOW_WINDOW_CMD -> Int32
# stdcall は 32bit のみ意味を持つ(x64 では無視)。

local ffi = require("ffi")
ffi.cdef[[
int32_t ShowWindow(
    void* hWnd,
    int32_t nCmdShow);
]]
local user32 = ffi.load("user32")
-- user32.ShowWindow(hWnd, nCmdShow)
-- hWnd : HWND
-- nCmdShow : SHOW_WINDOW_CMD
-- 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 ShowWindow = lib.func('__stdcall', 'ShowWindow', 'int32_t', ['void *', 'int32_t']);
// ShowWindow(hWnd, nCmdShow)
// hWnd : HWND -> 'void *'
// nCmdShow : SHOW_WINDOW_CMD -> '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("USER32.dll", {
  ShowWindow: { parameters: ["pointer", "i32"], result: "i32" },
});
// lib.symbols.ShowWindow(hWnd, nCmdShow)
// hWnd : HWND -> "pointer"
// nCmdShow : SHOW_WINDOW_CMD -> "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
int32_t ShowWindow(
    void* hWnd,
    int32_t nCmdShow);
C, "USER32.dll");
// $ffi->ShowWindow(hWnd, nCmdShow);
// hWnd : HWND
// nCmdShow : SHOW_WINDOW_CMD
// 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 ShowWindow(
        Pointer hWnd,   // HWND
        int nCmdShow   // SHOW_WINDOW_CMD
    );
}

@[Link("user32")]
lib LibUSER32
  fun ShowWindow = ShowWindow(
    hWnd : Void*,   # HWND
    nCmdShow : Int32   # SHOW_WINDOW_CMD
  ) : 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 ShowWindowNative = Int32 Function(Pointer<Void>, Int32);
typedef ShowWindowDart = int Function(Pointer<Void>, int);
final ShowWindow = DynamicLibrary.open('USER32.dll')
    .lookupFunction<ShowWindowNative, ShowWindowDart>('ShowWindow');
// hWnd : HWND -> Pointer<Void>
// nCmdShow : SHOW_WINDOW_CMD -> Int32
// 文字列は package:ffi の "...".toNativeUtf16()/toNativeUtf8() で変換。

{$mode objfpc}{$H+}
function ShowWindow(
  hWnd: THandle;   // HWND
  nCmdShow: Integer   // SHOW_WINDOW_CMD
): BOOL; stdcall;
  external 'USER32.dll' name 'ShowWindow';

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

foreign import stdcall safe "ShowWindow"
  c_ShowWindow :: Ptr () -> Int32 -> IO CInt
-- hWnd : HWND -> Ptr ()
-- nCmdShow : SHOW_WINDOW_CMD -> Int32
-- 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 showwindow =
  foreign "ShowWindow"
    ((ptr void) @-> int32_t @-> returning int32_t)
(* hWnd : HWND -> (ptr void) *)
(* nCmdShow : SHOW_WINDOW_CMD -> 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 user32 (t "USER32.dll"))
(cffi:use-foreign-library user32)

(cffi:defcfun ("ShowWindow" show-window :convention :stdcall) :int32
  (h-wnd :pointer)   ; HWND
  (n-cmd-show :int32))   ; SHOW_WINDOW_CMD
; isize/usize(INT_PTR/SIZE_T)は x64 前提で :int64/:uint64。x86 では :int32/:uint32。

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