u_austrncpy

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

LPSTR u_austrncpy(
    LPSTR dst,
    const WORD* src,
    INT n
);

<DllImport("icuuc.dll", ExactSpelling:=True, CallingConvention:=CallingConvention.Cdecl)>
Public Shared Function u_austrncpy(
    <MarshalAs(UnmanagedType.LPStr)> dst As String,   ' LPSTR
    ByRef src As UShort,   ' WORD*
    n As Integer   ' INT
) As IntPtr
End Function

' dst : LPSTR
' src : WORD*
' n : INT
Declare PtrSafe Function u_austrncpy Lib "icuuc" ( _
    ByVal dst As String, _
    ByRef src As Integer, _
    ByVal n 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

u_austrncpy = ctypes.cdll.icuuc.u_austrncpy
u_austrncpy.restype = wintypes.LPSTR
u_austrncpy.argtypes = [
    wintypes.LPCSTR,  # dst : LPSTR
    ctypes.POINTER(ctypes.c_ushort),  # src : WORD*
    ctypes.c_int,  # n : INT
]

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('icuuc.dll')
u_austrncpy = Fiddle::Function.new(
  lib['u_austrncpy'],
  [
    Fiddle::TYPE_VOIDP,  # dst : LPSTR
    Fiddle::TYPE_VOIDP,  # src : WORD*
    Fiddle::TYPE_INT,  # n : INT
  ],
  Fiddle::TYPE_VOIDP, Fiddle::Function::CDECL)

#[link(name = "icuuc")]
extern "C" {
    fn u_austrncpy(
        dst: *mut u8,  // LPSTR
        src: *const u16,  // WORD*
        n: i32  // INT
    ) -> *mut u8;
}
// crates: windows-sys provides ready-made bindings for this API.

$sig = @"
[DllImport("icuuc.dll", CallingConvention = CallingConvention.Cdecl)]
public static extern IntPtr u_austrncpy([MarshalAs(UnmanagedType.LPStr)] string dst, ref ushort src, int n);
"@
$api = Add-Type -MemberDefinition $sig -Name 'icuuc_u_austrncpy' -Namespace Win32 -PassThru
# $api::u_austrncpy(dst, src, n)

#uselib "icuuc.dll"
#func global u_austrncpy "u_austrncpy" sptr, sptr, sptr
; u_austrncpy dst, varptr(src), n   ; 戻り値は stat
; dst : LPSTR -> "sptr"
; src : WORD* -> "sptr"
; n : INT -> "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 (
	icuuc = windows.NewLazySystemDLL("icuuc.dll")
	procu_austrncpy = icuuc.NewProc("u_austrncpy")
)

// dst (LPSTR), src (WORD*), n (INT)
r1, _, err := procu_austrncpy.Call(
	uintptr(unsafe.Pointer(windows.BytePtrFromString(dst))),
	uintptr(src),
	uintptr(n),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // LPSTR

function u_austrncpy(
  dst: PAnsiChar;   // LPSTR
  src: Pointer;   // WORD*
  n: Integer   // INT
): PAnsiChar; cdecl;
  external 'icuuc.dll' name 'u_austrncpy';

result := DllCall("icuuc\u_austrncpy"
    , "AStr", dst   ; LPSTR
    , "Ptr", src   ; WORD*
    , "Int", n   ; INT
    , "Cdecl Ptr")   ; return: LPSTR

●u_austrncpy(dst, src, n) = DLL("icuuc.dll", "char* u_austrncpy(char*, void*, int)")
# 呼び出し: u_austrncpy(dst, src, n)
# dst : LPSTR -> "char*"
# src : WORD* -> "void*"
# n : INT -> "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 "icuuc" fn u_austrncpy(
    dst: [*c]const u8, // LPSTR
    src: [*c]u16, // WORD*
    n: i32 // INT
) callconv(.c) [*c]const u8;

proc u_austrncpy(
    dst: cstring,  # LPSTR
    src: ptr uint16,  # WORD*
    n: int32  # INT
): cstring {.importc: "u_austrncpy", cdecl, dynlib: "icuuc.dll".}

pragma(lib, "icuuc");
extern(C)
const(char)* u_austrncpy(
    const(char)* dst,   // LPSTR
    ushort* src,   // WORD*
    int n   // INT
);

ccall((:u_austrncpy, "icuuc.dll"), Cstring,
      (Cstring, Ptr{UInt16}, Int32),
      dst, src, n)
# dst : LPSTR -> Cstring
# src : WORD* -> Ptr{UInt16}
# n : INT -> Int32

local ffi = require("ffi")
ffi.cdef[[
const char* u_austrncpy(
    const char* dst,
    uint16_t* src,
    int32_t n);
]]
local icuuc = ffi.load("icuuc")
-- icuuc.u_austrncpy(dst, src, n)
-- dst : LPSTR
-- src : WORD*
-- n : INT
-- 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 u_austrncpy = lib.func('__cdecl', 'u_austrncpy', 'void *', ['str', 'uint16_t *', 'int32_t']);
// u_austrncpy(dst, src, n)
// dst : LPSTR -> 'str'
// src : WORD* -> 'uint16_t *'
// n : INT -> '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", {
  u_austrncpy: { parameters: ["buffer", "pointer", "i32"], result: "pointer" },
});
// lib.symbols.u_austrncpy(dst, src, n)
// dst : LPSTR -> "buffer"
// src : WORD* -> "pointer"
// n : INT -> "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
const char* u_austrncpy(
    const char* dst,
    uint16_t* src,
    int32_t n);
C, "icuuc.dll");
// $ffi->u_austrncpy(dst, src, n);
// dst : LPSTR
// src : WORD*
// n : INT
// 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);
    Pointer u_austrncpy(
        String dst,   // LPSTR
        ShortByReference src,   // WORD*
        int n   // INT
    );
}

@[Link("icuuc")]
lib Libicuuc
  fun u_austrncpy = u_austrncpy(
    dst : UInt8*,   # LPSTR
    src : UInt16*,   # WORD*
    n : Int32   # INT
  ) : UInt8*
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 u_austrncpyNative = Pointer<Utf8> Function(Pointer<Utf8>, Pointer<Uint16>, Int32);
typedef u_austrncpyDart = Pointer<Utf8> Function(Pointer<Utf8>, Pointer<Uint16>, int);
final u_austrncpy = DynamicLibrary.open('icuuc.dll')
    .lookupFunction<u_austrncpyNative, u_austrncpyDart>('u_austrncpy');
// dst : LPSTR -> Pointer<Utf8>
// src : WORD* -> Pointer<Uint16>
// n : INT -> Int32
// 文字列は package:ffi の "...".toNativeUtf16()/toNativeUtf8() で変換。

{$mode objfpc}{$H+}
function u_austrncpy(
  dst: PAnsiChar;   // LPSTR
  src: Pointer;   // WORD*
  n: Integer   // INT
): PAnsiChar; cdecl;
  external 'icuuc.dll' name 'u_austrncpy';

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

foreign import ccall safe "u_austrncpy"
  c_u_austrncpy :: CString -> Ptr Word16 -> Int32 -> IO CString
-- dst : LPSTR -> CString
-- src : WORD* -> Ptr Word16
-- n : INT -> 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 u_austrncpy =
  foreign "u_austrncpy"
    (string @-> (ptr uint16_t) @-> int32_t @-> returning string)
(* dst : LPSTR -> string *)
(* src : WORD* -> (ptr uint16_t) *)
(* n : INT -> 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 ("u_austrncpy" u-austrncpy :convention :cdecl) :string
  (dst :string)   ; LPSTR
  (src :pointer)   ; WORD*
  (n :int32))   ; INT
; isize/usize(INT_PTR/SIZE_T)は x64 前提で :int64/:uint64。x86 では :int32/:uint32。

use Win32::API;
my $u_austrncpy = Win32::API::More->new('icuuc',
    'LPSTR u_austrncpy(LPCSTR dst, LPVOID src, int n)');
# my $ret = $u_austrncpy->Call($dst, $src, $n);
# dst : LPSTR -> LPCSTR
# src : WORD* -> LPVOID
# n : INT -> int
# 値渡し構造体は pack() した文字列、または Win32::API::Struct を使用。