DefFrameProcW

// USER32.dll  (Unicode / -W)
#include <windows.h>

LRESULT DefFrameProcW(
    HWND hWnd,
    HWND hWndMDIClient,   // optional
    DWORD uMsg,
    WPARAM wParam,
    LPARAM lParam
);

<DllImport("USER32.dll", CharSet:=CharSet.Unicode, ExactSpelling:=True)>
Public Shared Function DefFrameProcW(
    hWnd As IntPtr,   ' HWND
    hWndMDIClient As IntPtr,   ' HWND optional
    uMsg As UInteger,   ' DWORD
    wParam As UIntPtr,   ' WPARAM
    lParam As IntPtr   ' LPARAM
) As IntPtr
End Function

' hWnd : HWND
' hWndMDIClient : HWND optional
' uMsg : DWORD
' wParam : WPARAM
' lParam : LPARAM
Declare PtrSafe Function DefFrameProcW Lib "user32" ( _
    ByVal hWnd As LongPtr, _
    ByVal hWndMDIClient As LongPtr, _
    ByVal uMsg As Long, _
    ByVal wParam As LongPtr, _
    ByVal lParam As LongPtr) As LongPtr
' Unicode(W): 文字列は ByVal As LongPtr とし StrPtr(unicodeStr) を渡す
' VBA7前提(PtrSafe)。32bit Office では LongPtr→Long。Integer=16bit / Long=32bit / LongLong=64bit。

import ctypes
from ctypes import wintypes

DefFrameProcW = ctypes.windll.user32.DefFrameProcW
DefFrameProcW.restype = ctypes.c_ssize_t
DefFrameProcW.argtypes = [
    wintypes.HANDLE,  # hWnd : HWND
    wintypes.HANDLE,  # hWndMDIClient : HWND optional
    wintypes.DWORD,  # uMsg : DWORD
    ctypes.c_size_t,  # wParam : WPARAM
    ctypes.c_ssize_t,  # lParam : LPARAM
]

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('USER32.dll')
DefFrameProcW = Fiddle::Function.new(
  lib['DefFrameProcW'],
  [
    Fiddle::TYPE_VOIDP,  # hWnd : HWND
    Fiddle::TYPE_VOIDP,  # hWndMDIClient : HWND optional
    -Fiddle::TYPE_INT,  # uMsg : DWORD
    Fiddle::TYPE_UINTPTR_T,  # wParam : WPARAM
    Fiddle::TYPE_INTPTR_T,  # lParam : LPARAM
  ],
  Fiddle::TYPE_INTPTR_T)
# Wide strings: pass str.encode("UTF-16LE") + "\x00\x00"

#[link(name = "user32")]
extern "system" {
    fn DefFrameProcW(
        hWnd: *mut core::ffi::c_void,  // HWND
        hWndMDIClient: *mut core::ffi::c_void,  // HWND optional
        uMsg: u32,  // DWORD
        wParam: usize,  // WPARAM
        lParam: isize  // LPARAM
    ) -> isize;
}
// crates: windows-sys provides ready-made bindings for this API.

$sig = @"
[DllImport("USER32.dll", CharSet = CharSet.Unicode)]
public static extern IntPtr DefFrameProcW(IntPtr hWnd, IntPtr hWndMDIClient, uint uMsg, UIntPtr wParam, IntPtr lParam);
"@
$api = Add-Type -MemberDefinition $sig -Name 'USER32_DefFrameProcW' -Namespace Win32 -PassThru
# $api::DefFrameProcW(hWnd, hWndMDIClient, uMsg, wParam, lParam)

#uselib "USER32.dll"
#func global DefFrameProcW "DefFrameProcW" wptr, wptr, wptr, wptr, wptr
; DefFrameProcW hWnd, hWndMDIClient, uMsg, wParam, lParam   ; 戻り値は stat
; hWnd : HWND -> "wptr"
; hWndMDIClient : HWND optional -> "wptr"
; uMsg : DWORD -> "wptr"
; wParam : WPARAM -> "wptr"
; lParam : LPARAM -> "wptr"
; ※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 DefFrameProcW "DefFrameProcW" sptr, sptr, int, sptr, sptr
; res = DefFrameProcW(hWnd, hWndMDIClient, uMsg, wParam, lParam)
; hWnd : HWND -> "sptr"
; hWndMDIClient : HWND optional -> "sptr"
; uMsg : DWORD -> "int"
; wParam : WPARAM -> "sptr"
; lParam : LPARAM -> "sptr"

; LRESULT DefFrameProcW(HWND hWnd, HWND hWndMDIClient, DWORD uMsg, WPARAM wParam, LPARAM lParam)
#uselib "USER32.dll"
#cfunc global DefFrameProcW "DefFrameProcW" intptr, intptr, int, intptr, intptr
; res = DefFrameProcW(hWnd, hWndMDIClient, uMsg, wParam, lParam)
; hWnd : HWND -> "intptr"
; hWndMDIClient : HWND optional -> "intptr"
; uMsg : DWORD -> "int"
; wParam : WPARAM -> "intptr"
; lParam : LPARAM -> "intptr"

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

var (
	user32 = windows.NewLazySystemDLL("USER32.dll")
	procDefFrameProcW = user32.NewProc("DefFrameProcW")
)

// hWnd (HWND), hWndMDIClient (HWND optional), uMsg (DWORD), wParam (WPARAM), lParam (LPARAM)
r1, _, err := procDefFrameProcW.Call(
	uintptr(hWnd),
	uintptr(hWndMDIClient),
	uintptr(uMsg),
	uintptr(wParam),
	uintptr(lParam),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // LRESULT

function DefFrameProcW(
  hWnd: THandle;   // HWND
  hWndMDIClient: THandle;   // HWND optional
  uMsg: DWORD;   // DWORD
  wParam: NativeUInt;   // WPARAM
  lParam: NativeInt   // LPARAM
): NativeInt; stdcall;
  external 'USER32.dll' name 'DefFrameProcW';

result := DllCall("USER32\DefFrameProcW"
    , "Ptr", hWnd   ; HWND
    , "Ptr", hWndMDIClient   ; HWND optional
    , "UInt", uMsg   ; DWORD
    , "UPtr", wParam   ; WPARAM
    , "Ptr", lParam   ; LPARAM
    , "Ptr")   ; return: LRESULT

●DefFrameProcW(hWnd, hWndMDIClient, uMsg, wParam, lParam) = DLL("USER32.dll", "int DefFrameProcW(void*, void*, dword, int, int)")
# 呼び出し: DefFrameProcW(hWnd, hWndMDIClient, uMsg, wParam, lParam)
# hWnd : HWND -> "void*"
# hWndMDIClient : HWND optional -> "void*"
# uMsg : DWORD -> "dword"
# wParam : WPARAM -> "int"
# lParam : LPARAM -> "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)。
# ※-W(Unicode)関数。なでしこ1はANSIのため -A 版の利用を推奨。

const std = @import("std");

extern "user32" fn DefFrameProcW(
    hWnd: ?*anyopaque, // HWND
    hWndMDIClient: ?*anyopaque, // HWND optional
    uMsg: u32, // DWORD
    wParam: usize, // WPARAM
    lParam: isize // LPARAM
) callconv(std.os.windows.WINAPI) isize;
// Unicode(-W): UTF-16LE のヌル終端バッファ([*c]const u16)を渡す。

proc DefFrameProcW(
    hWnd: pointer,  # HWND
    hWndMDIClient: pointer,  # HWND optional
    uMsg: uint32,  # DWORD
    wParam: uint,  # WPARAM
    lParam: int  # LPARAM
): int {.importc: "DefFrameProcW", stdcall, dynlib: "USER32.dll".}
# Unicode(-W): WideCString は newWideCString("...") で生成。

pragma(lib, "user32");
extern(Windows)
ptrdiff_t DefFrameProcW(
    void* hWnd,   // HWND
    void* hWndMDIClient,   // HWND optional
    uint uMsg,   // DWORD
    size_t wParam,   // WPARAM
    ptrdiff_t lParam   // LPARAM
);

ccall((:DefFrameProcW, "USER32.dll"), stdcall, Int,
      (Ptr{Cvoid}, Ptr{Cvoid}, UInt32, Csize_t, Int),
      hWnd, hWndMDIClient, uMsg, wParam, lParam)
# hWnd : HWND -> Ptr{Cvoid}
# hWndMDIClient : HWND optional -> Ptr{Cvoid}
# uMsg : DWORD -> UInt32
# wParam : WPARAM -> Csize_t
# lParam : LPARAM -> Int
# stdcall は 32bit のみ意味を持つ(x64 では無視)。
# Unicode(-W): Cwstring には transcode(UInt16, "...") 等で UTF-16 を渡す。

local ffi = require("ffi")
ffi.cdef[[
intptr_t DefFrameProcW(
    void* hWnd,
    void* hWndMDIClient,
    uint32_t uMsg,
    uintptr_t wParam,
    intptr_t lParam);
]]
local user32 = ffi.load("user32")
-- user32.DefFrameProcW(hWnd, hWndMDIClient, uMsg, wParam, lParam)
-- hWnd : HWND
-- hWndMDIClient : HWND optional
-- uMsg : DWORD
-- wParam : WPARAM
-- lParam : LPARAM
-- 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。
-- Unicode(-W): uint16_t* には UTF-16LE のバッファ(ffi.new("uint16_t[?]", ...))を渡す。

const koffi = require('koffi');
const lib = koffi.load('USER32.dll');
const DefFrameProcW = lib.func('__stdcall', 'DefFrameProcW', 'intptr_t', ['void *', 'void *', 'uint32_t', 'uintptr_t', 'intptr_t']);
// DefFrameProcW(hWnd, hWndMDIClient, uMsg, wParam, lParam)
// hWnd : HWND -> 'void *'
// hWndMDIClient : HWND optional -> 'void *'
// uMsg : DWORD -> 'uint32_t'
// wParam : WPARAM -> 'uintptr_t'
// lParam : LPARAM -> 'intptr_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", {
  DefFrameProcW: { parameters: ["pointer", "pointer", "u32", "usize", "isize"], result: "isize" },
});
// lib.symbols.DefFrameProcW(hWnd, hWndMDIClient, uMsg, wParam, lParam)
// hWnd : HWND -> "pointer"
// hWndMDIClient : HWND optional -> "pointer"
// uMsg : DWORD -> "u32"
// wParam : WPARAM -> "usize"
// lParam : LPARAM -> "isize"
// 文字列は "buffer"。Unicode(-W) は new TextEncoder() ではなく UTF-16LE のバイト列(末尾に \x00\x00)を Uint8Array で渡す。
// 値渡し構造体は { struct: [ ...field types... ] } を使用。

<?php
$ffi = FFI::cdef(<<<C
intptr_t DefFrameProcW(
    void* hWnd,
    void* hWndMDIClient,
    uint32_t uMsg,
    size_t wParam,
    intptr_t lParam);
C, "USER32.dll");
// $ffi->DefFrameProcW(hWnd, hWndMDIClient, uMsg, wParam, lParam);
// hWnd : HWND
// hWndMDIClient : HWND optional
// uMsg : DWORD
// wParam : WPARAM
// lParam : LPARAM
// 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, W32APIOptions.UNICODE_OPTIONS);
    long DefFrameProcW(
        Pointer hWnd,   // HWND
        Pointer hWndMDIClient,   // HWND optional
        int uMsg,   // DWORD
        long wParam,   // WPARAM
        long lParam   // LPARAM
    );
}
// Unicode(-W): WString(入力)/char[](出力)で UTF-16 をマーシャリング。

@[Link("user32")]
lib LibUSER32
  fun DefFrameProcW = DefFrameProcW(
    hWnd : Void*,   # HWND
    hWndMDIClient : Void*,   # HWND optional
    uMsg : UInt32,   # DWORD
    wParam : LibC::SizeT,   # WPARAM
    lParam : LibC::SSizeT   # LPARAM
  ) : LibC::SSizeT
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 DefFrameProcWNative = IntPtr Function(Pointer<Void>, Pointer<Void>, Uint32, UintPtr, IntPtr);
typedef DefFrameProcWDart = int Function(Pointer<Void>, Pointer<Void>, int, int, int);
final DefFrameProcW = DynamicLibrary.open('USER32.dll')
    .lookupFunction<DefFrameProcWNative, DefFrameProcWDart>('DefFrameProcW');
// hWnd : HWND -> Pointer<Void>
// hWndMDIClient : HWND optional -> Pointer<Void>
// uMsg : DWORD -> Uint32
// wParam : WPARAM -> UintPtr
// lParam : LPARAM -> IntPtr
// 文字列は package:ffi の "...".toNativeUtf16()/toNativeUtf8() で変換。

{$mode objfpc}{$H+}
function DefFrameProcW(
  hWnd: THandle;   // HWND
  hWndMDIClient: THandle;   // HWND optional
  uMsg: DWORD;   // DWORD
  wParam: NativeUInt;   // WPARAM
  lParam: NativeInt   // LPARAM
): NativeInt; stdcall;
  external 'USER32.dll' name 'DefFrameProcW';

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

foreign import stdcall safe "DefFrameProcW"
  c_DefFrameProcW :: Ptr () -> Ptr () -> Word32 -> CUIntPtr -> CIntPtr -> IO CIntPtr
-- hWnd : HWND -> Ptr ()
-- hWndMDIClient : HWND optional -> Ptr ()
-- uMsg : DWORD -> Word32
-- wParam : WPARAM -> CUIntPtr
-- lParam : LPARAM -> CIntPtr
-- 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 defframeprocw =
  foreign "DefFrameProcW"
    ((ptr void) @-> (ptr void) @-> uint32_t @-> size_t @-> intptr_t @-> returning intptr_t)
(* hWnd : HWND -> (ptr void) *)
(* hWndMDIClient : HWND optional -> (ptr void) *)
(* uMsg : DWORD -> uint32_t *)
(* wParam : WPARAM -> size_t *)
(* lParam : LPARAM -> intptr_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 ("DefFrameProcW" def-frame-proc-w :convention :stdcall) :int64
  (h-wnd :pointer)   ; HWND
  (h-wnd-mdiclient :pointer)   ; HWND optional
  (u-msg :uint32)   ; DWORD
  (w-param :uint64)   ; WPARAM
  (l-param :int64))   ; LPARAM
; isize/usize(INT_PTR/SIZE_T)は x64 前提で :int64/:uint64。x86 では :int32/:uint32。

use Win32::API;
my $DefFrameProcW = Win32::API::More->new('USER32',
    'LPARAM DefFrameProcW(HANDLE hWnd, HANDLE hWndMDIClient, DWORD uMsg, WPARAM wParam, LPARAM lParam)');
# my $ret = $DefFrameProcW->Call($hWnd, $hWndMDIClient, $uMsg, $wParam, $lParam);
# hWnd : HWND -> HANDLE
# hWndMDIClient : HWND optional -> HANDLE
# uMsg : DWORD -> DWORD
# wParam : WPARAM -> WPARAM
# lParam : LPARAM -> LPARAM
# 値渡し構造体は pack() した文字列、または Win32::API::Struct を使用。
# Unicode(-W): LPCWSTR/LPWSTR は Win32::API が UTF-16 変換を行う。