udatpg_getAppendItemName

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

WORD* udatpg_getAppendItemName(
    const void** dtpg,
    UDateTimePatternField field,
    INT* pLength
);

<DllImport("icuin.dll", ExactSpelling:=True, CallingConvention:=CallingConvention.Cdecl)>
Public Shared Function udatpg_getAppendItemName(
    dtpg As IntPtr,   ' void**
    field As Integer,   ' UDateTimePatternField
    ByRef pLength As Integer   ' INT* in/out
) As IntPtr
End Function

' dtpg : void**
' field : UDateTimePatternField
' pLength : INT* in/out
Declare PtrSafe Function udatpg_getAppendItemName Lib "icuin" ( _
    ByVal dtpg As LongPtr, _
    ByVal field As Long, _
    ByRef pLength As Long) As LongPtr
' VBA7前提(PtrSafe)。32bit Office では LongPtr→Long。Integer=16bit / Long=32bit / LongLong=64bit。

import ctypes
from ctypes import wintypes

udatpg_getAppendItemName = ctypes.cdll.icuin.udatpg_getAppendItemName
udatpg_getAppendItemName.restype = ctypes.c_void_p
udatpg_getAppendItemName.argtypes = [
    ctypes.c_void_p,  # dtpg : void**
    ctypes.c_int,  # field : UDateTimePatternField
    ctypes.POINTER(ctypes.c_int),  # pLength : INT* in/out
]

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('icuin.dll')
udatpg_getAppendItemName = Fiddle::Function.new(
  lib['udatpg_getAppendItemName'],
  [
    Fiddle::TYPE_VOIDP,  # dtpg : void**
    Fiddle::TYPE_INT,  # field : UDateTimePatternField
    Fiddle::TYPE_VOIDP,  # pLength : INT* in/out
  ],
  Fiddle::TYPE_VOIDP, Fiddle::Function::CDECL)

#[link(name = "icuin")]
extern "C" {
    fn udatpg_getAppendItemName(
        dtpg: *const *const (),  // void**
        field: i32,  // UDateTimePatternField
        pLength: *mut i32  // INT* in/out
    ) -> *mut u16;
}
// crates: windows-sys provides ready-made bindings for this API.

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

#uselib "icuin.dll"
#func global udatpg_getAppendItemName "udatpg_getAppendItemName" sptr, sptr, sptr
; udatpg_getAppendItemName dtpg, field, varptr(pLength)   ; 戻り値は stat
; dtpg : void** -> "sptr"
; field : UDateTimePatternField -> "sptr"
; pLength : INT* in/out -> "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。

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

var (
	icuin = windows.NewLazySystemDLL("icuin.dll")
	procudatpg_getAppendItemName = icuin.NewProc("udatpg_getAppendItemName")
)

// dtpg (void**), field (UDateTimePatternField), pLength (INT* in/out)
r1, _, err := procudatpg_getAppendItemName.Call(
	uintptr(dtpg),
	uintptr(field),
	uintptr(pLength),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // WORD*

function udatpg_getAppendItemName(
  dtpg: Pointer;   // void**
  field: Integer;   // UDateTimePatternField
  pLength: Pointer   // INT* in/out
): Pointer; cdecl;
  external 'icuin.dll' name 'udatpg_getAppendItemName';

result := DllCall("icuin\udatpg_getAppendItemName"
    , "Ptr", dtpg   ; void**
    , "Int", field   ; UDateTimePatternField
    , "Ptr", pLength   ; INT* in/out
    , "Cdecl Ptr")   ; return: WORD*

●udatpg_getAppendItemName(dtpg, field, pLength) = DLL("icuin.dll", "void* udatpg_getAppendItemName(void*, int, void*)")
# 呼び出し: udatpg_getAppendItemName(dtpg, field, pLength)
# dtpg : void** -> "void*"
# field : UDateTimePatternField -> "int"
# pLength : INT* in/out -> "void*"
# 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 udatpg_getAppendItemName(
    dtpg: ?*anyopaque, // void**
    field: i32, // UDateTimePatternField
    pLength: [*c]i32 // INT* in/out
) callconv(.c) [*c]u16;

proc udatpg_getAppendItemName(
    dtpg: pointer,  # void**
    field: int32,  # UDateTimePatternField
    pLength: ptr int32  # INT* in/out
): ptr uint16 {.importc: "udatpg_getAppendItemName", cdecl, dynlib: "icuin.dll".}

pragma(lib, "icuin");
extern(C)
ushort* udatpg_getAppendItemName(
    void** dtpg,   // void**
    int field,   // UDateTimePatternField
    int* pLength   // INT* in/out
);

ccall((:udatpg_getAppendItemName, "icuin.dll"), Ptr{UInt16},
      (Ptr{Cvoid}, Int32, Ptr{Int32}),
      dtpg, field, pLength)
# dtpg : void** -> Ptr{Cvoid}
# field : UDateTimePatternField -> Int32
# pLength : INT* in/out -> Ptr{Int32}

local ffi = require("ffi")
ffi.cdef[[
uint16_t* udatpg_getAppendItemName(
    void** dtpg,
    int32_t field,
    int32_t* pLength);
]]
local icuin = ffi.load("icuin")
-- icuin.udatpg_getAppendItemName(dtpg, field, pLength)
-- dtpg : void**
-- field : UDateTimePatternField
-- pLength : INT* in/out
-- 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 udatpg_getAppendItemName = lib.func('__cdecl', 'udatpg_getAppendItemName', 'uint16_t *', ['void *', 'int32_t', 'int32_t *']);
// udatpg_getAppendItemName(dtpg, field, pLength)
// dtpg : void** -> 'void *'
// field : UDateTimePatternField -> 'int32_t'
// pLength : INT* in/out -> '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", {
  udatpg_getAppendItemName: { parameters: ["pointer", "i32", "pointer"], result: "pointer" },
});
// lib.symbols.udatpg_getAppendItemName(dtpg, field, pLength)
// dtpg : void** -> "pointer"
// field : UDateTimePatternField -> "i32"
// pLength : INT* in/out -> "pointer"
// 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
uint16_t* udatpg_getAppendItemName(
    void** dtpg,
    int32_t field,
    int32_t* pLength);
C, "icuin.dll");
// $ffi->udatpg_getAppendItemName(dtpg, field, pLength);
// dtpg : void**
// field : UDateTimePatternField
// pLength : INT* in/out
// 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);
    Pointer udatpg_getAppendItemName(
        Pointer dtpg,   // void**
        int field,   // UDateTimePatternField
        IntByReference pLength   // INT* in/out
    );
}

@[Link("icuin")]
lib Libicuin
  fun udatpg_getAppendItemName = udatpg_getAppendItemName(
    dtpg : Void**,   # void**
    field : Int32,   # UDateTimePatternField
    pLength : Int32*   # INT* in/out
  ) : UInt16*
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 udatpg_getAppendItemNameNative = Pointer<Uint16> Function(Pointer<Void>, Int32, Pointer<Int32>);
typedef udatpg_getAppendItemNameDart = Pointer<Uint16> Function(Pointer<Void>, int, Pointer<Int32>);
final udatpg_getAppendItemName = DynamicLibrary.open('icuin.dll')
    .lookupFunction<udatpg_getAppendItemNameNative, udatpg_getAppendItemNameDart>('udatpg_getAppendItemName');
// dtpg : void** -> Pointer<Void>
// field : UDateTimePatternField -> Int32
// pLength : INT* in/out -> Pointer<Int32>
// 文字列は package:ffi の "...".toNativeUtf16()/toNativeUtf8() で変換。

{$mode objfpc}{$H+}
function udatpg_getAppendItemName(
  dtpg: Pointer;   // void**
  field: Integer;   // UDateTimePatternField
  pLength: Pointer   // INT* in/out
): Pointer; cdecl;
  external 'icuin.dll' name 'udatpg_getAppendItemName';

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

foreign import ccall safe "udatpg_getAppendItemName"
  c_udatpg_getAppendItemName :: Ptr () -> Int32 -> Ptr Int32 -> IO (Ptr Word16)
-- dtpg : void** -> Ptr ()
-- field : UDateTimePatternField -> Int32
-- pLength : INT* in/out -> Ptr 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 udatpg_getappenditemname =
  foreign "udatpg_getAppendItemName"
    ((ptr void) @-> int32_t @-> (ptr int32_t) @-> returning (ptr uint16_t))
(* dtpg : void** -> (ptr void) *)
(* field : UDateTimePatternField -> int32_t *)
(* pLength : INT* in/out -> (ptr 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 ("udatpg_getAppendItemName" udatpg-get-append-item-name :convention :cdecl) :pointer
  (dtpg :pointer)   ; void**
  (field :int32)   ; UDateTimePatternField
  (p-length :pointer))   ; INT* in/out
; isize/usize(INT_PTR/SIZE_T)は x64 前提で :int64/:uint64。x86 では :int32/:uint32。

use Win32::API;
my $udatpg_getAppendItemName = Win32::API::More->new('icuin',
    'LPVOID udatpg_getAppendItemName(LPVOID dtpg, int field, LPVOID pLength)');
# my $ret = $udatpg_getAppendItemName->Call($dtpg, $field, $pLength);
# dtpg : void** -> LPVOID
# field : UDateTimePatternField -> int
# pLength : INT* in/out -> LPVOID
# 値渡し構造体は pack() した文字列、または Win32::API::Struct を使用。