udatpg_getDefaultHourCycle

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

UDateFormatHourCycle udatpg_getDefaultHourCycle(
    const void** dtpg,
    UErrorCode* pErrorCode
);

<DllImport("icu.dll", ExactSpelling:=True, CallingConvention:=CallingConvention.Cdecl)>
Public Shared Function udatpg_getDefaultHourCycle(
    dtpg As IntPtr,   ' void**
    ByRef pErrorCode As Integer   ' UErrorCode* in/out
) As Integer
End Function

' dtpg : void**
' pErrorCode : UErrorCode* in/out
Declare PtrSafe Function udatpg_getDefaultHourCycle Lib "icu" ( _
    ByVal dtpg As LongPtr, _
    ByRef pErrorCode 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

udatpg_getDefaultHourCycle = ctypes.cdll.icu.udatpg_getDefaultHourCycle
udatpg_getDefaultHourCycle.restype = ctypes.c_int
udatpg_getDefaultHourCycle.argtypes = [
    ctypes.c_void_p,  # dtpg : void**
    ctypes.c_void_p,  # pErrorCode : UErrorCode* in/out
]

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('icu.dll')
udatpg_getDefaultHourCycle = Fiddle::Function.new(
  lib['udatpg_getDefaultHourCycle'],
  [
    Fiddle::TYPE_VOIDP,  # dtpg : void**
    Fiddle::TYPE_VOIDP,  # pErrorCode : UErrorCode* in/out
  ],
  Fiddle::TYPE_INT, Fiddle::Function::CDECL)

#[link(name = "icu")]
extern "C" {
    fn udatpg_getDefaultHourCycle(
        dtpg: *const *const (),  // void**
        pErrorCode: *mut i32  // UErrorCode* in/out
    ) -> i32;
}
// crates: windows-sys provides ready-made bindings for this API.

$sig = @"
[DllImport("icu.dll", CallingConvention = CallingConvention.Cdecl)]
public static extern int udatpg_getDefaultHourCycle(IntPtr dtpg, ref int pErrorCode);
"@
$api = Add-Type -MemberDefinition $sig -Name 'icu_udatpg_getDefaultHourCycle' -Namespace Win32 -PassThru
# $api::udatpg_getDefaultHourCycle(dtpg, pErrorCode)

#uselib "icu.dll"
#func global udatpg_getDefaultHourCycle "udatpg_getDefaultHourCycle" sptr, sptr
; udatpg_getDefaultHourCycle dtpg, varptr(pErrorCode)   ; 戻り値は stat
; dtpg : void** -> "sptr"
; pErrorCode : UErrorCode* 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 (
	icu = windows.NewLazySystemDLL("icu.dll")
	procudatpg_getDefaultHourCycle = icu.NewProc("udatpg_getDefaultHourCycle")
)

// dtpg (void**), pErrorCode (UErrorCode* in/out)
r1, _, err := procudatpg_getDefaultHourCycle.Call(
	uintptr(dtpg),
	uintptr(pErrorCode),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // UDateFormatHourCycle

function udatpg_getDefaultHourCycle(
  dtpg: Pointer;   // void**
  pErrorCode: Pointer   // UErrorCode* in/out
): Integer; cdecl;
  external 'icu.dll' name 'udatpg_getDefaultHourCycle';

result := DllCall("icu\udatpg_getDefaultHourCycle"
    , "Ptr", dtpg   ; void**
    , "Ptr", pErrorCode   ; UErrorCode* in/out
    , "Cdecl Int")   ; return: UDateFormatHourCycle

●udatpg_getDefaultHourCycle(dtpg, pErrorCode) = DLL("icu.dll", "int udatpg_getDefaultHourCycle(void*, void*)")
# 呼び出し: udatpg_getDefaultHourCycle(dtpg, pErrorCode)
# dtpg : void** -> "void*"
# pErrorCode : UErrorCode* 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 "icu" fn udatpg_getDefaultHourCycle(
    dtpg: ?*anyopaque, // void**
    pErrorCode: [*c]i32 // UErrorCode* in/out
) callconv(.c) i32;

proc udatpg_getDefaultHourCycle(
    dtpg: pointer,  # void**
    pErrorCode: ptr int32  # UErrorCode* in/out
): int32 {.importc: "udatpg_getDefaultHourCycle", cdecl, dynlib: "icu.dll".}

pragma(lib, "icu");
extern(C)
int udatpg_getDefaultHourCycle(
    void** dtpg,   // void**
    int* pErrorCode   // UErrorCode* in/out
);

ccall((:udatpg_getDefaultHourCycle, "icu.dll"), Int32,
      (Ptr{Cvoid}, Ptr{Int32}),
      dtpg, pErrorCode)
# dtpg : void** -> Ptr{Cvoid}
# pErrorCode : UErrorCode* in/out -> Ptr{Int32}

local ffi = require("ffi")
ffi.cdef[[
int32_t udatpg_getDefaultHourCycle(
    void** dtpg,
    int32_t* pErrorCode);
]]
local icu = ffi.load("icu")
-- icu.udatpg_getDefaultHourCycle(dtpg, pErrorCode)
-- dtpg : void**
-- pErrorCode : UErrorCode* 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('icu.dll');
const udatpg_getDefaultHourCycle = lib.func('__cdecl', 'udatpg_getDefaultHourCycle', 'int32_t', ['void *', 'int32_t *']);
// udatpg_getDefaultHourCycle(dtpg, pErrorCode)
// dtpg : void** -> 'void *'
// pErrorCode : UErrorCode* 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("icu.dll", {
  udatpg_getDefaultHourCycle: { parameters: ["pointer", "pointer"], result: "i32" },
});
// lib.symbols.udatpg_getDefaultHourCycle(dtpg, pErrorCode)
// dtpg : void** -> "pointer"
// pErrorCode : UErrorCode* 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
int32_t udatpg_getDefaultHourCycle(
    void** dtpg,
    int32_t* pErrorCode);
C, "icu.dll");
// $ffi->udatpg_getDefaultHourCycle(dtpg, pErrorCode);
// dtpg : void**
// pErrorCode : UErrorCode* 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 Icu extends Library {
    Icu INSTANCE = Native.load("icu", Icu.class);
    int udatpg_getDefaultHourCycle(
        Pointer dtpg,   // void**
        IntByReference pErrorCode   // UErrorCode* in/out
    );
}

@[Link("icu")]
lib Libicu
  fun udatpg_getDefaultHourCycle = udatpg_getDefaultHourCycle(
    dtpg : Void**,   # void**
    pErrorCode : Int32*   # UErrorCode* in/out
  ) : 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 udatpg_getDefaultHourCycleNative = Int32 Function(Pointer<Void>, Pointer<Int32>);
typedef udatpg_getDefaultHourCycleDart = int Function(Pointer<Void>, Pointer<Int32>);
final udatpg_getDefaultHourCycle = DynamicLibrary.open('icu.dll')
    .lookupFunction<udatpg_getDefaultHourCycleNative, udatpg_getDefaultHourCycleDart>('udatpg_getDefaultHourCycle');
// dtpg : void** -> Pointer<Void>
// pErrorCode : UErrorCode* in/out -> Pointer<Int32>
// 文字列は package:ffi の "...".toNativeUtf16()/toNativeUtf8() で変換。

{$mode objfpc}{$H+}
function udatpg_getDefaultHourCycle(
  dtpg: Pointer;   // void**
  pErrorCode: Pointer   // UErrorCode* in/out
): Integer; cdecl;
  external 'icu.dll' name 'udatpg_getDefaultHourCycle';

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

foreign import ccall safe "udatpg_getDefaultHourCycle"
  c_udatpg_getDefaultHourCycle :: Ptr () -> Ptr Int32 -> IO Int32
-- dtpg : void** -> Ptr ()
-- pErrorCode : UErrorCode* 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_getdefaulthourcycle =
  foreign "udatpg_getDefaultHourCycle"
    ((ptr void) @-> (ptr int32_t) @-> returning int32_t)
(* dtpg : void** -> (ptr void) *)
(* pErrorCode : UErrorCode* 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 icu (t "icu.dll"))
(cffi:use-foreign-library icu)

(cffi:defcfun ("udatpg_getDefaultHourCycle" udatpg-get-default-hour-cycle :convention :cdecl) :int32
  (dtpg :pointer)   ; void**
  (p-error-code :pointer))   ; UErrorCode* 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_getDefaultHourCycle = Win32::API::More->new('icu',
    'int udatpg_getDefaultHourCycle(LPVOID dtpg, LPVOID pErrorCode)');
# my $ret = $udatpg_getDefaultHourCycle->Call($dtpg, $pErrorCode);
# dtpg : void** -> LPVOID
# pErrorCode : UErrorCode* 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。