udat_toCalendarDateField

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

UCalendarDateFields udat_toCalendarDateField(
    UDateFormatField field
);

<DllImport("icuin.dll", ExactSpelling:=True, CallingConvention:=CallingConvention.Cdecl)>
Public Shared Function udat_toCalendarDateField(
    field As Integer   ' UDateFormatField
) As Integer
End Function

' field : UDateFormatField
Declare PtrSafe Function udat_toCalendarDateField Lib "icuin" ( _
    ByVal field 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

udat_toCalendarDateField = ctypes.cdll.icuin.udat_toCalendarDateField
udat_toCalendarDateField.restype = ctypes.c_int
udat_toCalendarDateField.argtypes = [
    ctypes.c_int,  # field : UDateFormatField
]

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('icuin.dll')
udat_toCalendarDateField = Fiddle::Function.new(
  lib['udat_toCalendarDateField'],
  [
    Fiddle::TYPE_INT,  # field : UDateFormatField
  ],
  Fiddle::TYPE_INT, Fiddle::Function::CDECL)

#[link(name = "icuin")]
extern "C" {
    fn udat_toCalendarDateField(
        field: i32  // UDateFormatField
    ) -> i32;
}
// crates: windows-sys provides ready-made bindings for this API.

$sig = @"
[DllImport("icuin.dll", CallingConvention = CallingConvention.Cdecl)]
public static extern int udat_toCalendarDateField(int field);
"@
$api = Add-Type -MemberDefinition $sig -Name 'icuin_udat_toCalendarDateField' -Namespace Win32 -PassThru
# $api::udat_toCalendarDateField(field)

#uselib "icuin.dll"
#func global udat_toCalendarDateField "udat_toCalendarDateField" sptr
; udat_toCalendarDateField field   ; 戻り値は stat
; field : UDateFormatField -> "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 "icuin.dll"
#cfunc global udat_toCalendarDateField "udat_toCalendarDateField" int
; res = udat_toCalendarDateField(field)
; field : UDateFormatField -> "int"

; UCalendarDateFields udat_toCalendarDateField(UDateFormatField field)
#uselib "icuin.dll"
#cfunc global udat_toCalendarDateField "udat_toCalendarDateField" int
; res = udat_toCalendarDateField(field)
; field : UDateFormatField -> "int"

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

var (
	icuin = windows.NewLazySystemDLL("icuin.dll")
	procudat_toCalendarDateField = icuin.NewProc("udat_toCalendarDateField")
)

// field (UDateFormatField)
r1, _, err := procudat_toCalendarDateField.Call(
	uintptr(field),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // UCalendarDateFields

function udat_toCalendarDateField(
  field: Integer   // UDateFormatField
): Integer; cdecl;
  external 'icuin.dll' name 'udat_toCalendarDateField';

result := DllCall("icuin\udat_toCalendarDateField"
    , "Int", field   ; UDateFormatField
    , "Cdecl Int")   ; return: UCalendarDateFields

●udat_toCalendarDateField(field) = DLL("icuin.dll", "int udat_toCalendarDateField(int)")
# 呼び出し: udat_toCalendarDateField(field)
# field : UDateFormatField -> "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)。
# ※cdecl関数。DLL()宣言はstdcall前提。cdeclは EXEC_PTR(`cdecl`,…) を使用。

const std = @import("std");

extern "icuin" fn udat_toCalendarDateField(
    field: i32 // UDateFormatField
) callconv(.c) i32;

proc udat_toCalendarDateField(
    field: int32  # UDateFormatField
): int32 {.importc: "udat_toCalendarDateField", cdecl, dynlib: "icuin.dll".}

pragma(lib, "icuin");
extern(C)
int udat_toCalendarDateField(
    int field   // UDateFormatField
);

ccall((:udat_toCalendarDateField, "icuin.dll"), Int32,
      (Int32,),
      field)
# field : UDateFormatField -> Int32

local ffi = require("ffi")
ffi.cdef[[
int32_t udat_toCalendarDateField(
    int32_t field);
]]
local icuin = ffi.load("icuin")
-- icuin.udat_toCalendarDateField(field)
-- field : UDateFormatField
-- 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('icuin.dll');
const udat_toCalendarDateField = lib.func('__cdecl', 'udat_toCalendarDateField', 'int32_t', ['int32_t']);
// udat_toCalendarDateField(field)
// field : UDateFormatField -> '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("icuin.dll", {
  udat_toCalendarDateField: { parameters: ["i32"], result: "i32" },
});
// lib.symbols.udat_toCalendarDateField(field)
// field : UDateFormatField -> "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 udat_toCalendarDateField(
    int32_t field);
C, "icuin.dll");
// $ffi->udat_toCalendarDateField(field);
// field : UDateFormatField
// 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。

import com.sun.jna.*;
import com.sun.jna.ptr.*;
import com.sun.jna.win32.StdCallLibrary;
import com.sun.jna.win32.W32APIOptions;

public interface Icuin extends Library {
    Icuin INSTANCE = Native.load("icuin", Icuin.class);
    int udat_toCalendarDateField(
        int field   // UDateFormatField
    );
}

@[Link("icuin")]
lib Libicuin
  fun udat_toCalendarDateField = udat_toCalendarDateField(
    field : Int32   # UDateFormatField
  ) : Int32
end
# 構造体/GUID/enum は lib 内に対応する型定義が必要。

import 'dart:ffi';
import 'package:ffi/ffi.dart';

typedef udat_toCalendarDateFieldNative = Int32 Function(Int32);
typedef udat_toCalendarDateFieldDart = int Function(int);
final udat_toCalendarDateField = DynamicLibrary.open('icuin.dll')
    .lookupFunction<udat_toCalendarDateFieldNative, udat_toCalendarDateFieldDart>('udat_toCalendarDateField');
// field : UDateFormatField -> Int32
// 文字列は package:ffi の "...".toNativeUtf16()/toNativeUtf8() で変換。

{$mode objfpc}{$H+}
function udat_toCalendarDateField(
  field: Integer   // UDateFormatField
): Integer; cdecl;
  external 'icuin.dll' name 'udat_toCalendarDateField';

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

foreign import ccall safe "udat_toCalendarDateField"
  c_udat_toCalendarDateField :: Int32 -> IO Int32
-- field : UDateFormatField -> 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 udat_tocalendardatefield =
  foreign "udat_toCalendarDateField"
    (int32_t @-> returning int32_t)
(* field : UDateFormatField -> 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 icuin (t "icuin.dll"))
(cffi:use-foreign-library icuin)

(cffi:defcfun ("udat_toCalendarDateField" udat-to-calendar-date-field :convention :cdecl) :int32
  (field :int32))   ; UDateFormatField
; isize/usize(INT_PTR/SIZE_T)は x64 前提で :int64/:uint64。x86 では :int32/:uint32。

use Win32::API;
my $udat_toCalendarDateField = Win32::API::More->new('icuin',
    'int udat_toCalendarDateField(int field)');
# my $ret = $udat_toCalendarDateField->Call($field);
# field : UDateFormatField -> int
# 値渡し構造体は pack() した文字列、または Win32::API::Struct を使用。