u_charFromName

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

INT u_charFromName(
    UCharNameChoice nameChoice,
    LPCSTR name,
    UErrorCode* pErrorCode
);

<DllImport("icuuc.dll", ExactSpelling:=True, CallingConvention:=CallingConvention.Cdecl)>
Public Shared Function u_charFromName(
    nameChoice As Integer,   ' UCharNameChoice
    <MarshalAs(UnmanagedType.LPStr)> name As String,   ' LPCSTR
    ByRef pErrorCode As Integer   ' UErrorCode* in/out
) As Integer
End Function

' nameChoice : UCharNameChoice
' name : LPCSTR
' pErrorCode : UErrorCode* in/out
Declare PtrSafe Function u_charFromName Lib "icuuc" ( _
    ByVal nameChoice As Long, _
    ByVal name As String, _
    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

u_charFromName = ctypes.cdll.icuuc.u_charFromName
u_charFromName.restype = ctypes.c_int
u_charFromName.argtypes = [
    ctypes.c_int,  # nameChoice : UCharNameChoice
    wintypes.LPCSTR,  # name : LPCSTR
    ctypes.c_void_p,  # pErrorCode : UErrorCode* in/out
]

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('icuuc.dll')
u_charFromName = Fiddle::Function.new(
  lib['u_charFromName'],
  [
    Fiddle::TYPE_INT,  # nameChoice : UCharNameChoice
    Fiddle::TYPE_VOIDP,  # name : LPCSTR
    Fiddle::TYPE_VOIDP,  # pErrorCode : UErrorCode* in/out
  ],
  Fiddle::TYPE_INT, Fiddle::Function::CDECL)

#[link(name = "icuuc")]
extern "C" {
    fn u_charFromName(
        nameChoice: i32,  // UCharNameChoice
        name: *const u8,  // LPCSTR
        pErrorCode: *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 u_charFromName(int nameChoice, [MarshalAs(UnmanagedType.LPStr)] string name, ref int pErrorCode);
"@
$api = Add-Type -MemberDefinition $sig -Name 'icuuc_u_charFromName' -Namespace Win32 -PassThru
# $api::u_charFromName(nameChoice, name, pErrorCode)

#uselib "icuuc.dll"
#func global u_charFromName "u_charFromName" sptr, sptr, sptr
; u_charFromName nameChoice, name, varptr(pErrorCode)   ; 戻り値は stat
; nameChoice : UCharNameChoice -> "sptr"
; name : LPCSTR -> "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 (
	icuuc = windows.NewLazySystemDLL("icuuc.dll")
	procu_charFromName = icuuc.NewProc("u_charFromName")
)

// nameChoice (UCharNameChoice), name (LPCSTR), pErrorCode (UErrorCode* in/out)
r1, _, err := procu_charFromName.Call(
	uintptr(nameChoice),
	uintptr(unsafe.Pointer(windows.BytePtrFromString(name))),
	uintptr(pErrorCode),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // INT

function u_charFromName(
  nameChoice: Integer;   // UCharNameChoice
  name: PAnsiChar;   // LPCSTR
  pErrorCode: Pointer   // UErrorCode* in/out
): Integer; cdecl;
  external 'icuuc.dll' name 'u_charFromName';

result := DllCall("icuuc\u_charFromName"
    , "Int", nameChoice   ; UCharNameChoice
    , "AStr", name   ; LPCSTR
    , "Ptr", pErrorCode   ; UErrorCode* in/out
    , "Cdecl Int")   ; return: INT

●u_charFromName(nameChoice, name, pErrorCode) = DLL("icuuc.dll", "int u_charFromName(int, char*, void*)")
# 呼び出し: u_charFromName(nameChoice, name, pErrorCode)
# nameChoice : UCharNameChoice -> "int"
# name : LPCSTR -> "char*"
# 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 "icuuc" fn u_charFromName(
    nameChoice: i32, // UCharNameChoice
    name: [*c]const u8, // LPCSTR
    pErrorCode: [*c]i32 // UErrorCode* in/out
) callconv(.c) i32;

proc u_charFromName(
    nameChoice: int32,  # UCharNameChoice
    name: cstring,  # LPCSTR
    pErrorCode: ptr int32  # UErrorCode* in/out
): int32 {.importc: "u_charFromName", cdecl, dynlib: "icuuc.dll".}

pragma(lib, "icuuc");
extern(C)
int u_charFromName(
    int nameChoice,   // UCharNameChoice
    const(char)* name,   // LPCSTR
    int* pErrorCode   // UErrorCode* in/out
);

ccall((:u_charFromName, "icuuc.dll"), Int32,
      (Int32, Cstring, Ptr{Int32}),
      nameChoice, name, pErrorCode)
# nameChoice : UCharNameChoice -> Int32
# name : LPCSTR -> Cstring
# pErrorCode : UErrorCode* in/out -> Ptr{Int32}

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

@[Link("icuuc")]
lib Libicuuc
  fun u_charFromName = u_charFromName(
    nameChoice : Int32,   # UCharNameChoice
    name : UInt8*,   # LPCSTR
    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 u_charFromNameNative = Int32 Function(Int32, Pointer<Utf8>, Pointer<Int32>);
typedef u_charFromNameDart = int Function(int, Pointer<Utf8>, Pointer<Int32>);
final u_charFromName = DynamicLibrary.open('icuuc.dll')
    .lookupFunction<u_charFromNameNative, u_charFromNameDart>('u_charFromName');
// nameChoice : UCharNameChoice -> Int32
// name : LPCSTR -> Pointer<Utf8>
// pErrorCode : UErrorCode* in/out -> Pointer<Int32>
// 文字列は package:ffi の "...".toNativeUtf16()/toNativeUtf8() で変換。

{$mode objfpc}{$H+}
function u_charFromName(
  nameChoice: Integer;   // UCharNameChoice
  name: PAnsiChar;   // LPCSTR
  pErrorCode: Pointer   // UErrorCode* in/out
): Integer; cdecl;
  external 'icuuc.dll' name 'u_charFromName';

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

foreign import ccall safe "u_charFromName"
  c_u_charFromName :: Int32 -> CString -> Ptr Int32 -> IO Int32
-- nameChoice : UCharNameChoice -> Int32
-- name : LPCSTR -> CString
-- 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 u_charfromname =
  foreign "u_charFromName"
    (int32_t @-> string @-> (ptr int32_t) @-> returning int32_t)
(* nameChoice : UCharNameChoice -> int32_t *)
(* name : LPCSTR -> string *)
(* 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 icuuc (t "icuuc.dll"))
(cffi:use-foreign-library icuuc)

(cffi:defcfun ("u_charFromName" u-char-from-name :convention :cdecl) :int32
  (name-choice :int32)   ; UCharNameChoice
  (name :string)   ; LPCSTR
  (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 $u_charFromName = Win32::API::More->new('icuuc',
    'int u_charFromName(int nameChoice, LPCSTR name, LPVOID pErrorCode)');
# my $ret = $u_charFromName->Call($nameChoice, $name, $pErrorCode);
# nameChoice : UCharNameChoice -> int
# name : LPCSTR -> LPCSTR
# 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。