uiter_setUTF8

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

void uiter_setUTF8(
    UCharIterator* iter,
    LPCSTR s,
    INT length
);

<DllImport("icuuc.dll", ExactSpelling:=True, CallingConvention:=CallingConvention.Cdecl)>
Public Shared Sub uiter_setUTF8(
    iter As IntPtr,   ' UCharIterator* in/out
    <MarshalAs(UnmanagedType.LPStr)> s As String,   ' LPCSTR
    length As Integer   ' INT
)
End Sub

' iter : UCharIterator* in/out
' s : LPCSTR
' length : INT
Declare PtrSafe Sub uiter_setUTF8 Lib "icuuc" ( _
    ByVal iter As LongPtr, _
    ByVal s As String, _
    ByVal length As Long)
' VBA7前提(PtrSafe)。32bit Office では LongPtr→Long。Integer=16bit / Long=32bit / LongLong=64bit。

import ctypes
from ctypes import wintypes

uiter_setUTF8 = ctypes.cdll.icuuc.uiter_setUTF8
uiter_setUTF8.restype = None
uiter_setUTF8.argtypes = [
    ctypes.c_void_p,  # iter : UCharIterator* in/out
    wintypes.LPCSTR,  # s : LPCSTR
    ctypes.c_int,  # length : INT
]

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('icuuc.dll')
uiter_setUTF8 = Fiddle::Function.new(
  lib['uiter_setUTF8'],
  [
    Fiddle::TYPE_VOIDP,  # iter : UCharIterator* in/out
    Fiddle::TYPE_VOIDP,  # s : LPCSTR
    Fiddle::TYPE_INT,  # length : INT
  ],
  Fiddle::TYPE_VOID, Fiddle::Function::CDECL)

#[link(name = "icuuc")]
extern "C" {
    fn uiter_setUTF8(
        iter: *mut UCharIterator,  // UCharIterator* in/out
        s: *const u8,  // LPCSTR
        length: i32  // INT
    );
}
// crates: windows-sys provides ready-made bindings for this API.

$sig = @"
[DllImport("icuuc.dll", CallingConvention = CallingConvention.Cdecl)]
public static extern void uiter_setUTF8(IntPtr iter, [MarshalAs(UnmanagedType.LPStr)] string s, int length);
"@
$api = Add-Type -MemberDefinition $sig -Name 'icuuc_uiter_setUTF8' -Namespace Win32 -PassThru
# $api::uiter_setUTF8(iter, s, length)

#uselib "icuuc.dll"
#func global uiter_setUTF8 "uiter_setUTF8" sptr, sptr, sptr
; uiter_setUTF8 varptr(iter), s, length
; iter : UCharIterator* in/out -> "sptr"
; s : LPCSTR -> "sptr"
; length : INT -> "sptr"

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

var (
	icuuc = windows.NewLazySystemDLL("icuuc.dll")
	procuiter_setUTF8 = icuuc.NewProc("uiter_setUTF8")
)

// iter (UCharIterator* in/out), s (LPCSTR), length (INT)
r1, _, err := procuiter_setUTF8.Call(
	uintptr(iter),
	uintptr(unsafe.Pointer(windows.BytePtrFromString(s))),
	uintptr(length),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // void

procedure uiter_setUTF8(
  iter: Pointer;   // UCharIterator* in/out
  s: PAnsiChar;   // LPCSTR
  length: Integer   // INT
); cdecl;
  external 'icuuc.dll' name 'uiter_setUTF8';

result := DllCall("icuuc\uiter_setUTF8"
    , "Ptr", iter   ; UCharIterator* in/out
    , "AStr", s   ; LPCSTR
    , "Int", length   ; INT
    , "Cdecl Int")   ; return: void

●uiter_setUTF8(iter, s, length) = DLL("icuuc.dll", "int uiter_setUTF8(void*, char*, int)")
# 呼び出し: uiter_setUTF8(iter, s, length)
# iter : UCharIterator* in/out -> "void*"
# s : LPCSTR -> "char*"
# length : 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 uiter_setUTF8(
    iter: [*c]UCharIterator, // UCharIterator* in/out
    s: [*c]const u8, // LPCSTR
    length: i32 // INT
) callconv(.c) void;

proc uiter_setUTF8(
    iter: ptr UCharIterator,  # UCharIterator* in/out
    s: cstring,  # LPCSTR
    length: int32  # INT
) {.importc: "uiter_setUTF8", cdecl, dynlib: "icuuc.dll".}

pragma(lib, "icuuc");
extern(C)
void uiter_setUTF8(
    UCharIterator* iter,   // UCharIterator* in/out
    const(char)* s,   // LPCSTR
    int length   // INT
);

ccall((:uiter_setUTF8, "icuuc.dll"), Cvoid,
      (Ptr{UCharIterator}, Cstring, Int32),
      iter, s, length)
# iter : UCharIterator* in/out -> Ptr{UCharIterator}
# s : LPCSTR -> Cstring
# length : INT -> Int32

local ffi = require("ffi")
ffi.cdef[[
void uiter_setUTF8(
    void* iter,
    const char* s,
    int32_t length);
]]
local icuuc = ffi.load("icuuc")
-- icuuc.uiter_setUTF8(iter, s, length)
-- iter : UCharIterator* in/out
-- s : LPCSTR
-- length : 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 uiter_setUTF8 = lib.func('__cdecl', 'uiter_setUTF8', 'void', ['void *', 'str', 'int32_t']);
// uiter_setUTF8(iter, s, length)
// iter : UCharIterator* in/out -> 'void *'
// s : LPCSTR -> 'str'
// length : 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", {
  uiter_setUTF8: { parameters: ["pointer", "buffer", "i32"], result: "void" },
});
// lib.symbols.uiter_setUTF8(iter, s, length)
// iter : UCharIterator* in/out -> "pointer"
// s : LPCSTR -> "buffer"
// length : 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
void uiter_setUTF8(
    void* iter,
    const char* s,
    int32_t length);
C, "icuuc.dll");
// $ffi->uiter_setUTF8(iter, s, length);
// iter : UCharIterator* in/out
// s : LPCSTR
// length : 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);
    void uiter_setUTF8(
        Pointer iter,   // UCharIterator* in/out
        String s,   // LPCSTR
        int length   // INT
    );
}

@[Link("icuuc")]
lib Libicuuc
  fun uiter_setUTF8 = uiter_setUTF8(
    iter : UCharIterator*,   # UCharIterator* in/out
    s : UInt8*,   # LPCSTR
    length : Int32   # INT
  ) : Void
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 uiter_setUTF8Native = Void Function(Pointer<Void>, Pointer<Utf8>, Int32);
typedef uiter_setUTF8Dart = void Function(Pointer<Void>, Pointer<Utf8>, int);
final uiter_setUTF8 = DynamicLibrary.open('icuuc.dll')
    .lookupFunction<uiter_setUTF8Native, uiter_setUTF8Dart>('uiter_setUTF8');
// iter : UCharIterator* in/out -> Pointer<Void>
// s : LPCSTR -> Pointer<Utf8>
// length : INT -> Int32
// 文字列は package:ffi の "...".toNativeUtf16()/toNativeUtf8() で変換。

{$mode objfpc}{$H+}
procedure uiter_setUTF8(
  iter: Pointer;   // UCharIterator* in/out
  s: PAnsiChar;   // LPCSTR
  length: Integer   // INT
); cdecl;
  external 'icuuc.dll' name 'uiter_setUTF8';

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

foreign import ccall safe "uiter_setUTF8"
  c_uiter_setUTF8 :: Ptr () -> CString -> Int32 -> IO ()
-- iter : UCharIterator* in/out -> Ptr ()
-- s : LPCSTR -> CString
-- length : 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 uiter_setutf8 =
  foreign "uiter_setUTF8"
    ((ptr void) @-> string @-> int32_t @-> returning void)
(* iter : UCharIterator* in/out -> (ptr void) *)
(* s : LPCSTR -> string *)
(* length : 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 ("uiter_setUTF8" uiter-set-utf8 :convention :cdecl) :void
  (iter :pointer)   ; UCharIterator* in/out
  (s :string)   ; LPCSTR
  (length :int32))   ; INT
; isize/usize(INT_PTR/SIZE_T)は x64 前提で :int64/:uint64。x86 では :int32/:uint32。

use Win32::API;
my $uiter_setUTF8 = Win32::API::More->new('icuuc',
    'void uiter_setUTF8(LPVOID iter, LPCSTR s, int length)');
# my $ret = $uiter_setUTF8->Call($iter, $s, $length);
# iter : UCharIterator* in/out -> LPVOID
# s : LPCSTR -> LPCSTR
# length : INT -> int
# 値渡し構造体は pack() した文字列、または Win32::API::Struct を使用。