ucurr_countCurrencies

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

INT ucurr_countCurrencies(
    LPCSTR locale,
    DOUBLE date,
    UErrorCode* ec
);

<DllImport("icuuc.dll", ExactSpelling:=True, CallingConvention:=CallingConvention.Cdecl)>
Public Shared Function ucurr_countCurrencies(
    <MarshalAs(UnmanagedType.LPStr)> locale As String,   ' LPCSTR
    [date] As Double,   ' DOUBLE
    ByRef ec As Integer   ' UErrorCode* in/out
) As Integer
End Function

' locale : LPCSTR
' date : DOUBLE
' ec : UErrorCode* in/out
Declare PtrSafe Function ucurr_countCurrencies Lib "icuuc" ( _
    ByVal locale As String, _
    ByVal date As Double, _
    ByRef ec 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

ucurr_countCurrencies = ctypes.cdll.icuuc.ucurr_countCurrencies
ucurr_countCurrencies.restype = ctypes.c_int
ucurr_countCurrencies.argtypes = [
    wintypes.LPCSTR,  # locale : LPCSTR
    ctypes.c_double,  # date : DOUBLE
    ctypes.c_void_p,  # ec : UErrorCode* in/out
]

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('icuuc.dll')
ucurr_countCurrencies = Fiddle::Function.new(
  lib['ucurr_countCurrencies'],
  [
    Fiddle::TYPE_VOIDP,  # locale : LPCSTR
    Fiddle::TYPE_DOUBLE,  # date : DOUBLE
    Fiddle::TYPE_VOIDP,  # ec : UErrorCode* in/out
  ],
  Fiddle::TYPE_INT, Fiddle::Function::CDECL)

#[link(name = "icuuc")]
extern "C" {
    fn ucurr_countCurrencies(
        locale: *const u8,  // LPCSTR
        date: f64,  // DOUBLE
        ec: *mut i32  // UErrorCode* in/out
    ) -> i32;
}
// crates: windows-sys provides ready-made bindings for this API.

$sig = @"
[DllImport("icuuc.dll", CallingConvention = CallingConvention.Cdecl)]
public static extern int ucurr_countCurrencies([MarshalAs(UnmanagedType.LPStr)] string locale, double date, ref int ec);
"@
$api = Add-Type -MemberDefinition $sig -Name 'icuuc_ucurr_countCurrencies' -Namespace Win32 -PassThru
# $api::ucurr_countCurrencies(locale, date, ec)

#uselib "icuuc.dll"
#func global ucurr_countCurrencies "ucurr_countCurrencies" sptr, double, sptr
; ucurr_countCurrencies locale, date, varptr(ec)   ; 戻り値は stat
; locale : LPCSTR -> "sptr"
; date : DOUBLE -> "double"
; ec : 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 (
	"math"
	"golang.org/x/sys/windows"
	"unsafe"
)

var (
	icuuc = windows.NewLazySystemDLL("icuuc.dll")
	procucurr_countCurrencies = icuuc.NewProc("ucurr_countCurrencies")
)

// locale (LPCSTR), date (DOUBLE), ec (UErrorCode* in/out)
r1, _, err := procucurr_countCurrencies.Call(
	uintptr(unsafe.Pointer(windows.BytePtrFromString(locale))),
	uintptr(math.Float64bits(date)),
	uintptr(ec),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // INT
// 注意: float/double 引数は proc.Call では XMM レジスタに渡せません。
// windows.SyscallN(proc.Addr(), math.Float64bits(x), ...) もしくは cgo を使用してください。

function ucurr_countCurrencies(
  locale: PAnsiChar;   // LPCSTR
  date: Double;   // DOUBLE
  ec: Pointer   // UErrorCode* in/out
): Integer; cdecl;
  external 'icuuc.dll' name 'ucurr_countCurrencies';

result := DllCall("icuuc\ucurr_countCurrencies"
    , "AStr", locale   ; LPCSTR
    , "Double", date   ; DOUBLE
    , "Ptr", ec   ; UErrorCode* in/out
    , "Cdecl Int")   ; return: INT

●ucurr_countCurrencies(locale, date, ec) = DLL("icuuc.dll", "int ucurr_countCurrencies(char*, double, void*)")
# 呼び出し: ucurr_countCurrencies(locale, date, ec)
# locale : LPCSTR -> "char*"
# date : DOUBLE -> "double"
# ec : 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 "icuuc" fn ucurr_countCurrencies(
    locale: [*c]const u8, // LPCSTR
    date: f64, // DOUBLE
    ec: [*c]i32 // UErrorCode* in/out
) callconv(.c) i32;

proc ucurr_countCurrencies(
    locale: cstring,  # LPCSTR
    date: float64,  # DOUBLE
    ec: ptr int32  # UErrorCode* in/out
): int32 {.importc: "ucurr_countCurrencies", cdecl, dynlib: "icuuc.dll".}

pragma(lib, "icuuc");
extern(C)
int ucurr_countCurrencies(
    const(char)* locale,   // LPCSTR
    double date,   // DOUBLE
    int* ec   // UErrorCode* in/out
);

ccall((:ucurr_countCurrencies, "icuuc.dll"), Int32,
      (Cstring, Float64, Ptr{Int32}),
      locale, date, ec)
# locale : LPCSTR -> Cstring
# date : DOUBLE -> Float64
# ec : UErrorCode* in/out -> Ptr{Int32}

local ffi = require("ffi")
ffi.cdef[[
int32_t ucurr_countCurrencies(
    const char* locale,
    double date,
    int32_t* ec);
]]
local icuuc = ffi.load("icuuc")
-- icuuc.ucurr_countCurrencies(locale, date, ec)
-- locale : LPCSTR
-- date : DOUBLE
-- ec : 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('icuuc.dll');
const ucurr_countCurrencies = lib.func('__cdecl', 'ucurr_countCurrencies', 'int32_t', ['str', 'double', 'int32_t *']);
// ucurr_countCurrencies(locale, date, ec)
// locale : LPCSTR -> 'str'
// date : DOUBLE -> 'double'
// ec : 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("icuuc.dll", {
  ucurr_countCurrencies: { parameters: ["buffer", "f64", "pointer"], result: "i32" },
});
// lib.symbols.ucurr_countCurrencies(locale, date, ec)
// locale : LPCSTR -> "buffer"
// date : DOUBLE -> "f64"
// ec : 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 ucurr_countCurrencies(
    const char* locale,
    double date,
    int32_t* ec);
C, "icuuc.dll");
// $ffi->ucurr_countCurrencies(locale, date, ec);
// locale : LPCSTR
// date : DOUBLE
// ec : 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 Icuuc extends Library {
    Icuuc INSTANCE = Native.load("icuuc", Icuuc.class);
    int ucurr_countCurrencies(
        String locale,   // LPCSTR
        double date,   // DOUBLE
        IntByReference ec   // UErrorCode* in/out
    );
}

@[Link("icuuc")]
lib Libicuuc
  fun ucurr_countCurrencies = ucurr_countCurrencies(
    locale : UInt8*,   # LPCSTR
    date : Float64,   # DOUBLE
    ec : 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 ucurr_countCurrenciesNative = Int32 Function(Pointer<Utf8>, Double, Pointer<Int32>);
typedef ucurr_countCurrenciesDart = int Function(Pointer<Utf8>, double, Pointer<Int32>);
final ucurr_countCurrencies = DynamicLibrary.open('icuuc.dll')
    .lookupFunction<ucurr_countCurrenciesNative, ucurr_countCurrenciesDart>('ucurr_countCurrencies');
// locale : LPCSTR -> Pointer<Utf8>
// date : DOUBLE -> Double
// ec : UErrorCode* in/out -> Pointer<Int32>
// 文字列は package:ffi の "...".toNativeUtf16()/toNativeUtf8() で変換。

{$mode objfpc}{$H+}
function ucurr_countCurrencies(
  locale: PAnsiChar;   // LPCSTR
  date: Double;   // DOUBLE
  ec: Pointer   // UErrorCode* in/out
): Integer; cdecl;
  external 'icuuc.dll' name 'ucurr_countCurrencies';

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

foreign import ccall safe "ucurr_countCurrencies"
  c_ucurr_countCurrencies :: CString -> CDouble -> Ptr Int32 -> IO Int32
-- locale : LPCSTR -> CString
-- date : DOUBLE -> CDouble
-- ec : 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 ucurr_countcurrencies =
  foreign "ucurr_countCurrencies"
    (string @-> double @-> (ptr int32_t) @-> returning int32_t)
(* locale : LPCSTR -> string *)
(* date : DOUBLE -> double *)
(* ec : 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 icuuc (t "icuuc.dll"))
(cffi:use-foreign-library icuuc)

(cffi:defcfun ("ucurr_countCurrencies" ucurr-count-currencies :convention :cdecl) :int32
  (locale :string)   ; LPCSTR
  (date :double)   ; DOUBLE
  (ec :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 $ucurr_countCurrencies = Win32::API::More->new('icuuc',
    'int ucurr_countCurrencies(LPCSTR locale, double date, LPVOID ec)');
# my $ret = $ucurr_countCurrencies->Call($locale, $date, $ec);
# locale : LPCSTR -> LPCSTR
# date : DOUBLE -> double
# ec : 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。