EnumDateFormatsExEx

// KERNEL32.dll
#include <windows.h>

BOOL EnumDateFormatsExEx(
    DATEFMT_ENUMPROCEXEX lpDateFmtEnumProcExEx,
    LPCWSTR lpLocaleName,   // optional
    ENUM_DATE_FORMATS_FLAGS dwFlags,
    LPARAM lParam
);

<DllImport("KERNEL32.dll", SetLastError:=True, ExactSpelling:=True)>
Public Shared Function EnumDateFormatsExEx(
    lpDateFmtEnumProcExEx As IntPtr,   ' DATEFMT_ENUMPROCEXEX
    <MarshalAs(UnmanagedType.LPWStr)> lpLocaleName As String,   ' LPCWSTR optional
    dwFlags As UInteger,   ' ENUM_DATE_FORMATS_FLAGS
    lParam As IntPtr   ' LPARAM
) As <MarshalAs(UnmanagedType.Bool)> Boolean
End Function

' lpDateFmtEnumProcExEx : DATEFMT_ENUMPROCEXEX
' lpLocaleName : LPCWSTR optional
' dwFlags : ENUM_DATE_FORMATS_FLAGS
' lParam : LPARAM
Declare PtrSafe Function EnumDateFormatsExEx Lib "kernel32" ( _
    ByVal lpDateFmtEnumProcExEx As LongPtr, _
    ByVal lpLocaleName As LongPtr, _
    ByVal dwFlags As Long, _
    ByVal lParam As LongPtr) As Long
' VBA7前提(PtrSafe)。32bit Office では LongPtr→Long。Integer=16bit / Long=32bit / LongLong=64bit。

import ctypes
from ctypes import wintypes

EnumDateFormatsExEx = ctypes.windll.kernel32.EnumDateFormatsExEx
EnumDateFormatsExEx.restype = wintypes.BOOL
EnumDateFormatsExEx.argtypes = [
    ctypes.c_void_p,  # lpDateFmtEnumProcExEx : DATEFMT_ENUMPROCEXEX
    wintypes.LPCWSTR,  # lpLocaleName : LPCWSTR optional
    wintypes.DWORD,  # dwFlags : ENUM_DATE_FORMATS_FLAGS
    ctypes.c_ssize_t,  # lParam : LPARAM
]
# GetLastError: use ctypes.GetLastError() (or ctypes.WinDLL(use_last_error=True))

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('KERNEL32.dll')
EnumDateFormatsExEx = Fiddle::Function.new(
  lib['EnumDateFormatsExEx'],
  [
    Fiddle::TYPE_VOIDP,  # lpDateFmtEnumProcExEx : DATEFMT_ENUMPROCEXEX
    Fiddle::TYPE_VOIDP,  # lpLocaleName : LPCWSTR optional
    -Fiddle::TYPE_INT,  # dwFlags : ENUM_DATE_FORMATS_FLAGS
    Fiddle::TYPE_INTPTR_T,  # lParam : LPARAM
  ],
  Fiddle::TYPE_INT)

#[link(name = "kernel32")]
extern "system" {
    fn EnumDateFormatsExEx(
        lpDateFmtEnumProcExEx: *const core::ffi::c_void,  // DATEFMT_ENUMPROCEXEX
        lpLocaleName: *const u16,  // LPCWSTR optional
        dwFlags: u32,  // ENUM_DATE_FORMATS_FLAGS
        lParam: isize  // LPARAM
    ) -> i32;
}
// crates: windows-sys provides ready-made bindings for this API.

$sig = @"
[return: MarshalAs(UnmanagedType.Bool)]
[DllImport("KERNEL32.dll", SetLastError = true)]
public static extern bool EnumDateFormatsExEx(IntPtr lpDateFmtEnumProcExEx, [MarshalAs(UnmanagedType.LPWStr)] string lpLocaleName, uint dwFlags, IntPtr lParam);
"@
$api = Add-Type -MemberDefinition $sig -Name 'KERNEL32_EnumDateFormatsExEx' -Namespace Win32 -PassThru
# $api::EnumDateFormatsExEx(lpDateFmtEnumProcExEx, lpLocaleName, dwFlags, lParam)

#uselib "KERNEL32.dll"
#func global EnumDateFormatsExEx "EnumDateFormatsExEx" sptr, sptr, sptr, sptr
; EnumDateFormatsExEx lpDateFmtEnumProcExEx, lpLocaleName, dwFlags, lParam   ; 戻り値は stat
; lpDateFmtEnumProcExEx : DATEFMT_ENUMPROCEXEX -> "sptr"
; lpLocaleName : LPCWSTR optional -> "sptr"
; dwFlags : ENUM_DATE_FORMATS_FLAGS -> "sptr"
; lParam : LPARAM -> "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 "KERNEL32.dll"
#cfunc global EnumDateFormatsExEx "EnumDateFormatsExEx" sptr, wstr, int, sptr
; res = EnumDateFormatsExEx(lpDateFmtEnumProcExEx, lpLocaleName, dwFlags, lParam)
; lpDateFmtEnumProcExEx : DATEFMT_ENUMPROCEXEX -> "sptr"
; lpLocaleName : LPCWSTR optional -> "wstr"
; dwFlags : ENUM_DATE_FORMATS_FLAGS -> "int"
; lParam : LPARAM -> "sptr"

; BOOL EnumDateFormatsExEx(DATEFMT_ENUMPROCEXEX lpDateFmtEnumProcExEx, LPCWSTR lpLocaleName, ENUM_DATE_FORMATS_FLAGS dwFlags, LPARAM lParam)
#uselib "KERNEL32.dll"
#cfunc global EnumDateFormatsExEx "EnumDateFormatsExEx" intptr, wstr, int, intptr
; res = EnumDateFormatsExEx(lpDateFmtEnumProcExEx, lpLocaleName, dwFlags, lParam)
; lpDateFmtEnumProcExEx : DATEFMT_ENUMPROCEXEX -> "intptr"
; lpLocaleName : LPCWSTR optional -> "wstr"
; dwFlags : ENUM_DATE_FORMATS_FLAGS -> "int"
; lParam : LPARAM -> "intptr"

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

var (
	kernel32 = windows.NewLazySystemDLL("KERNEL32.dll")
	procEnumDateFormatsExEx = kernel32.NewProc("EnumDateFormatsExEx")
)

// lpDateFmtEnumProcExEx (DATEFMT_ENUMPROCEXEX), lpLocaleName (LPCWSTR optional), dwFlags (ENUM_DATE_FORMATS_FLAGS), lParam (LPARAM)
r1, _, err := procEnumDateFormatsExEx.Call(
	uintptr(lpDateFmtEnumProcExEx),
	uintptr(unsafe.Pointer(windows.StringToUTF16Ptr(lpLocaleName))),
	uintptr(dwFlags),
	uintptr(lParam),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // BOOL

function EnumDateFormatsExEx(
  lpDateFmtEnumProcExEx: Pointer;   // DATEFMT_ENUMPROCEXEX
  lpLocaleName: PWideChar;   // LPCWSTR optional
  dwFlags: DWORD;   // ENUM_DATE_FORMATS_FLAGS
  lParam: NativeInt   // LPARAM
): BOOL; stdcall;
  external 'KERNEL32.dll' name 'EnumDateFormatsExEx';

result := DllCall("KERNEL32\EnumDateFormatsExEx"
    , "Ptr", lpDateFmtEnumProcExEx   ; DATEFMT_ENUMPROCEXEX
    , "WStr", lpLocaleName   ; LPCWSTR optional
    , "UInt", dwFlags   ; ENUM_DATE_FORMATS_FLAGS
    , "Ptr", lParam   ; LPARAM
    , "Int")   ; return: BOOL

●EnumDateFormatsExEx(lpDateFmtEnumProcExEx, lpLocaleName, dwFlags, lParam) = DLL("KERNEL32.dll", "bool EnumDateFormatsExEx(void*, char*, dword, int)")
# 呼び出し: EnumDateFormatsExEx(lpDateFmtEnumProcExEx, lpLocaleName, dwFlags, lParam)
# lpDateFmtEnumProcExEx : DATEFMT_ENUMPROCEXEX -> "void*"
# lpLocaleName : LPCWSTR optional -> "char*"
# dwFlags : ENUM_DATE_FORMATS_FLAGS -> "dword"
# 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)。

const std = @import("std");

extern "kernel32" fn EnumDateFormatsExEx(
    lpDateFmtEnumProcExEx: ?*anyopaque, // DATEFMT_ENUMPROCEXEX
    lpLocaleName: [*c]const u16, // LPCWSTR optional
    dwFlags: u32, // ENUM_DATE_FORMATS_FLAGS
    lParam: isize // LPARAM
) callconv(std.os.windows.WINAPI) i32;

proc EnumDateFormatsExEx(
    lpDateFmtEnumProcExEx: pointer,  # DATEFMT_ENUMPROCEXEX
    lpLocaleName: WideCString,  # LPCWSTR optional
    dwFlags: uint32,  # ENUM_DATE_FORMATS_FLAGS
    lParam: int  # LPARAM
): int32 {.importc: "EnumDateFormatsExEx", stdcall, dynlib: "KERNEL32.dll".}

pragma(lib, "kernel32");
extern(Windows)
int EnumDateFormatsExEx(
    void* lpDateFmtEnumProcExEx,   // DATEFMT_ENUMPROCEXEX
    const(wchar)* lpLocaleName,   // LPCWSTR optional
    uint dwFlags,   // ENUM_DATE_FORMATS_FLAGS
    ptrdiff_t lParam   // LPARAM
);

ccall((:EnumDateFormatsExEx, "KERNEL32.dll"), stdcall, Int32,
      (Ptr{Cvoid}, Cwstring, UInt32, Int),
      lpDateFmtEnumProcExEx, lpLocaleName, dwFlags, lParam)
# lpDateFmtEnumProcExEx : DATEFMT_ENUMPROCEXEX -> Ptr{Cvoid}
# lpLocaleName : LPCWSTR optional -> Cwstring
# dwFlags : ENUM_DATE_FORMATS_FLAGS -> UInt32
# lParam : LPARAM -> Int
# stdcall は 32bit のみ意味を持つ(x64 では無視)。

local ffi = require("ffi")
ffi.cdef[[
int32_t EnumDateFormatsExEx(
    void* lpDateFmtEnumProcExEx,
    const uint16_t* lpLocaleName,
    uint32_t dwFlags,
    intptr_t lParam);
]]
local kernel32 = ffi.load("kernel32")
-- kernel32.EnumDateFormatsExEx(lpDateFmtEnumProcExEx, lpLocaleName, dwFlags, lParam)
-- lpDateFmtEnumProcExEx : DATEFMT_ENUMPROCEXEX
-- lpLocaleName : LPCWSTR optional
-- dwFlags : ENUM_DATE_FORMATS_FLAGS
-- 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。

const koffi = require('koffi');
const lib = koffi.load('KERNEL32.dll');
const EnumDateFormatsExEx = lib.func('__stdcall', 'EnumDateFormatsExEx', 'int32_t', ['void *', 'str16', 'uint32_t', 'intptr_t']);
// EnumDateFormatsExEx(lpDateFmtEnumProcExEx, lpLocaleName, dwFlags, lParam)
// lpDateFmtEnumProcExEx : DATEFMT_ENUMPROCEXEX -> 'void *'
// lpLocaleName : LPCWSTR optional -> 'str16'
// dwFlags : ENUM_DATE_FORMATS_FLAGS -> 'uint32_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。
// コールバック(関数ポインタ)は koffi.proto/koffi.register で型を定義して渡す(素の void* では JS 関数を渡せない)。

const lib = Deno.dlopen("KERNEL32.dll", {
  EnumDateFormatsExEx: { parameters: ["pointer", "buffer", "u32", "isize"], result: "i32" },
});
// lib.symbols.EnumDateFormatsExEx(lpDateFmtEnumProcExEx, lpLocaleName, dwFlags, lParam)
// lpDateFmtEnumProcExEx : DATEFMT_ENUMPROCEXEX -> "pointer"
// lpLocaleName : LPCWSTR optional -> "buffer"
// dwFlags : ENUM_DATE_FORMATS_FLAGS -> "u32"
// lParam : LPARAM -> "isize"
// 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 EnumDateFormatsExEx(
    void* lpDateFmtEnumProcExEx,
    const uint16_t* lpLocaleName,
    uint32_t dwFlags,
    intptr_t lParam);
C, "KERNEL32.dll");
// $ffi->EnumDateFormatsExEx(lpDateFmtEnumProcExEx, lpLocaleName, dwFlags, lParam);
// lpDateFmtEnumProcExEx : DATEFMT_ENUMPROCEXEX
// lpLocaleName : LPCWSTR optional
// dwFlags : ENUM_DATE_FORMATS_FLAGS
// 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 Kernel32 extends StdCallLibrary {
    Kernel32 INSTANCE = Native.load("kernel32", Kernel32.class);
    boolean EnumDateFormatsExEx(
        Callback lpDateFmtEnumProcExEx,   // DATEFMT_ENUMPROCEXEX
        WString lpLocaleName,   // LPCWSTR optional
        int dwFlags,   // ENUM_DATE_FORMATS_FLAGS
        long lParam   // LPARAM
    );
}

@[Link("kernel32")]
lib LibKERNEL32
  fun EnumDateFormatsExEx = EnumDateFormatsExEx(
    lpDateFmtEnumProcExEx : Void*,   # DATEFMT_ENUMPROCEXEX
    lpLocaleName : UInt16*,   # LPCWSTR optional
    dwFlags : UInt32,   # ENUM_DATE_FORMATS_FLAGS
    lParam : LibC::SSizeT   # LPARAM
  ) : 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 EnumDateFormatsExExNative = Int32 Function(Pointer<Void>, Pointer<Utf16>, Uint32, IntPtr);
typedef EnumDateFormatsExExDart = int Function(Pointer<Void>, Pointer<Utf16>, int, int);
final EnumDateFormatsExEx = DynamicLibrary.open('KERNEL32.dll')
    .lookupFunction<EnumDateFormatsExExNative, EnumDateFormatsExExDart>('EnumDateFormatsExEx');
// lpDateFmtEnumProcExEx : DATEFMT_ENUMPROCEXEX -> Pointer<Void>
// lpLocaleName : LPCWSTR optional -> Pointer<Utf16>
// dwFlags : ENUM_DATE_FORMATS_FLAGS -> Uint32
// lParam : LPARAM -> IntPtr
// 文字列は package:ffi の "...".toNativeUtf16()/toNativeUtf8() で変換。

{$mode objfpc}{$H+}
function EnumDateFormatsExEx(
  lpDateFmtEnumProcExEx: Pointer;   // DATEFMT_ENUMPROCEXEX
  lpLocaleName: PWideChar;   // LPCWSTR optional
  dwFlags: DWORD;   // ENUM_DATE_FORMATS_FLAGS
  lParam: NativeInt   // LPARAM
): BOOL; stdcall;
  external 'KERNEL32.dll' name 'EnumDateFormatsExEx';

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

foreign import stdcall safe "EnumDateFormatsExEx"
  c_EnumDateFormatsExEx :: Ptr () -> CWString -> Word32 -> CIntPtr -> IO CInt
-- lpDateFmtEnumProcExEx : DATEFMT_ENUMPROCEXEX -> Ptr ()
-- lpLocaleName : LPCWSTR optional -> CWString
-- dwFlags : ENUM_DATE_FORMATS_FLAGS -> Word32
-- 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 enumdateformatsexex =
  foreign "EnumDateFormatsExEx"
    ((ptr void) @-> (ptr uint16_t) @-> uint32_t @-> intptr_t @-> returning int32_t)
(* lpDateFmtEnumProcExEx : DATEFMT_ENUMPROCEXEX -> (ptr void) *)
(* lpLocaleName : LPCWSTR optional -> (ptr uint16_t) *)
(* dwFlags : ENUM_DATE_FORMATS_FLAGS -> uint32_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 kernel32 (t "KERNEL32.dll"))
(cffi:use-foreign-library kernel32)

(cffi:defcfun ("EnumDateFormatsExEx" enum-date-formats-ex-ex :convention :stdcall) :int32
  (lp-date-fmt-enum-proc-ex-ex :pointer)   ; DATEFMT_ENUMPROCEXEX
  (lp-locale-name (:string :encoding :utf-16le))   ; LPCWSTR optional
  (dw-flags :uint32)   ; ENUM_DATE_FORMATS_FLAGS
  (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 $EnumDateFormatsExEx = Win32::API::More->new('KERNEL32',
    'BOOL EnumDateFormatsExEx(LPVOID lpDateFmtEnumProcExEx, LPCWSTR lpLocaleName, DWORD dwFlags, LPARAM lParam)');
# my $ret = $EnumDateFormatsExEx->Call($lpDateFmtEnumProcExEx, $lpLocaleName, $dwFlags, $lParam);
# lpDateFmtEnumProcExEx : DATEFMT_ENUMPROCEXEX -> LPVOID
# lpLocaleName : LPCWSTR optional -> LPCWSTR
# dwFlags : ENUM_DATE_FORMATS_FLAGS -> DWORD
# 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。
# コールバック(関数ポインタ)は Perl sub を直接渡せません。Win32::API::Callback を使用してください。