SetWindowRgn

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

INT SetWindowRgn(
    HWND hWnd,
    HRGN hRgn,   // optional
    BOOL bRedraw
);

<DllImport("USER32.dll", ExactSpelling:=True)>
Public Shared Function SetWindowRgn(
    hWnd As IntPtr,   ' HWND
    hRgn As IntPtr,   ' HRGN optional
    bRedraw As Boolean   ' BOOL
) As Integer
End Function

' hWnd : HWND
' hRgn : HRGN optional
' bRedraw : BOOL
Declare PtrSafe Function SetWindowRgn Lib "user32" ( _
    ByVal hWnd As LongPtr, _
    ByVal hRgn As LongPtr, _
    ByVal bRedraw 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

SetWindowRgn = ctypes.windll.user32.SetWindowRgn
SetWindowRgn.restype = ctypes.c_int
SetWindowRgn.argtypes = [
    wintypes.HANDLE,  # hWnd : HWND
    wintypes.HANDLE,  # hRgn : HRGN optional
    wintypes.BOOL,  # bRedraw : BOOL
]

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('USER32.dll')
SetWindowRgn = Fiddle::Function.new(
  lib['SetWindowRgn'],
  [
    Fiddle::TYPE_VOIDP,  # hWnd : HWND
    Fiddle::TYPE_VOIDP,  # hRgn : HRGN optional
    Fiddle::TYPE_INT,  # bRedraw : BOOL
  ],
  Fiddle::TYPE_INT)

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

$sig = @"
[DllImport("USER32.dll")]
public static extern int SetWindowRgn(IntPtr hWnd, IntPtr hRgn, bool bRedraw);
"@
$api = Add-Type -MemberDefinition $sig -Name 'USER32_SetWindowRgn' -Namespace Win32 -PassThru
# $api::SetWindowRgn(hWnd, hRgn, bRedraw)

#uselib "USER32.dll"
#func global SetWindowRgn "SetWindowRgn" sptr, sptr, sptr
; SetWindowRgn hWnd, hRgn, bRedraw   ; 戻り値は stat
; hWnd : HWND -> "sptr"
; hRgn : HRGN optional -> "sptr"
; bRedraw : BOOL -> "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 SetWindowRgn "SetWindowRgn" sptr, sptr, int
; res = SetWindowRgn(hWnd, hRgn, bRedraw)
; hWnd : HWND -> "sptr"
; hRgn : HRGN optional -> "sptr"
; bRedraw : BOOL -> "int"

; INT SetWindowRgn(HWND hWnd, HRGN hRgn, BOOL bRedraw)
#uselib "USER32.dll"
#cfunc global SetWindowRgn "SetWindowRgn" intptr, intptr, int
; res = SetWindowRgn(hWnd, hRgn, bRedraw)
; hWnd : HWND -> "intptr"
; hRgn : HRGN optional -> "intptr"
; bRedraw : BOOL -> "int"

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

var (
	user32 = windows.NewLazySystemDLL("USER32.dll")
	procSetWindowRgn = user32.NewProc("SetWindowRgn")
)

// hWnd (HWND), hRgn (HRGN optional), bRedraw (BOOL)
r1, _, err := procSetWindowRgn.Call(
	uintptr(hWnd),
	uintptr(hRgn),
	uintptr(bRedraw),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // INT

function SetWindowRgn(
  hWnd: THandle;   // HWND
  hRgn: THandle;   // HRGN optional
  bRedraw: BOOL   // BOOL
): Integer; stdcall;
  external 'USER32.dll' name 'SetWindowRgn';

result := DllCall("USER32\SetWindowRgn"
    , "Ptr", hWnd   ; HWND
    , "Ptr", hRgn   ; HRGN optional
    , "Int", bRedraw   ; BOOL
    , "Int")   ; return: INT

●SetWindowRgn(hWnd, hRgn, bRedraw) = DLL("USER32.dll", "int SetWindowRgn(void*, void*, bool)")
# 呼び出し: SetWindowRgn(hWnd, hRgn, bRedraw)
# hWnd : HWND -> "void*"
# hRgn : HRGN optional -> "void*"
# bRedraw : 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 "user32" fn SetWindowRgn(
    hWnd: ?*anyopaque, // HWND
    hRgn: ?*anyopaque, // HRGN optional
    bRedraw: i32 // BOOL
) callconv(std.os.windows.WINAPI) i32;

proc SetWindowRgn(
    hWnd: pointer,  # HWND
    hRgn: pointer,  # HRGN optional
    bRedraw: int32  # BOOL
): int32 {.importc: "SetWindowRgn", stdcall, dynlib: "USER32.dll".}

pragma(lib, "user32");
extern(Windows)
int SetWindowRgn(
    void* hWnd,   // HWND
    void* hRgn,   // HRGN optional
    int bRedraw   // BOOL
);

ccall((:SetWindowRgn, "USER32.dll"), stdcall, Int32,
      (Ptr{Cvoid}, Ptr{Cvoid}, Int32),
      hWnd, hRgn, bRedraw)
# hWnd : HWND -> Ptr{Cvoid}
# hRgn : HRGN optional -> Ptr{Cvoid}
# bRedraw : BOOL -> Int32
# stdcall は 32bit のみ意味を持つ(x64 では無視)。

local ffi = require("ffi")
ffi.cdef[[
int32_t SetWindowRgn(
    void* hWnd,
    void* hRgn,
    int32_t bRedraw);
]]
local user32 = ffi.load("user32")
-- user32.SetWindowRgn(hWnd, hRgn, bRedraw)
-- hWnd : HWND
-- hRgn : HRGN optional
-- bRedraw : 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('USER32.dll');
const SetWindowRgn = lib.func('__stdcall', 'SetWindowRgn', 'int32_t', ['void *', 'void *', 'int32_t']);
// SetWindowRgn(hWnd, hRgn, bRedraw)
// hWnd : HWND -> 'void *'
// hRgn : HRGN optional -> 'void *'
// bRedraw : 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("USER32.dll", {
  SetWindowRgn: { parameters: ["pointer", "pointer", "i32"], result: "i32" },
});
// lib.symbols.SetWindowRgn(hWnd, hRgn, bRedraw)
// hWnd : HWND -> "pointer"
// hRgn : HRGN optional -> "pointer"
// bRedraw : 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
int32_t SetWindowRgn(
    void* hWnd,
    void* hRgn,
    int32_t bRedraw);
C, "USER32.dll");
// $ffi->SetWindowRgn(hWnd, hRgn, bRedraw);
// hWnd : HWND
// hRgn : HRGN optional
// bRedraw : 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 User32 extends StdCallLibrary {
    User32 INSTANCE = Native.load("user32", User32.class);
    int SetWindowRgn(
        Pointer hWnd,   // HWND
        Pointer hRgn,   // HRGN optional
        boolean bRedraw   // BOOL
    );
}

@[Link("user32")]
lib LibUSER32
  fun SetWindowRgn = SetWindowRgn(
    hWnd : Void*,   # HWND
    hRgn : Void*,   # HRGN optional
    bRedraw : Int32   # BOOL
  ) : 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 SetWindowRgnNative = Int32 Function(Pointer<Void>, Pointer<Void>, Int32);
typedef SetWindowRgnDart = int Function(Pointer<Void>, Pointer<Void>, int);
final SetWindowRgn = DynamicLibrary.open('USER32.dll')
    .lookupFunction<SetWindowRgnNative, SetWindowRgnDart>('SetWindowRgn');
// hWnd : HWND -> Pointer<Void>
// hRgn : HRGN optional -> Pointer<Void>
// bRedraw : BOOL -> Int32
// 文字列は package:ffi の "...".toNativeUtf16()/toNativeUtf8() で変換。

{$mode objfpc}{$H+}
function SetWindowRgn(
  hWnd: THandle;   // HWND
  hRgn: THandle;   // HRGN optional
  bRedraw: BOOL   // BOOL
): Integer; stdcall;
  external 'USER32.dll' name 'SetWindowRgn';

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

foreign import stdcall safe "SetWindowRgn"
  c_SetWindowRgn :: Ptr () -> Ptr () -> CInt -> IO Int32
-- hWnd : HWND -> Ptr ()
-- hRgn : HRGN optional -> Ptr ()
-- bRedraw : 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 setwindowrgn =
  foreign "SetWindowRgn"
    ((ptr void) @-> (ptr void) @-> int32_t @-> returning int32_t)
(* hWnd : HWND -> (ptr void) *)
(* hRgn : HRGN optional -> (ptr void) *)
(* bRedraw : 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 user32 (t "USER32.dll"))
(cffi:use-foreign-library user32)

(cffi:defcfun ("SetWindowRgn" set-window-rgn :convention :stdcall) :int32
  (h-wnd :pointer)   ; HWND
  (h-rgn :pointer)   ; HRGN optional
  (b-redraw :int32))   ; BOOL
; isize/usize(INT_PTR/SIZE_T)は x64 前提で :int64/:uint64。x86 では :int32/:uint32。

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