StrFormatByteSizeEx

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

HRESULT StrFormatByteSizeEx(
    ULONGLONG ull,
    SFBS_FLAGS flags,
    LPWSTR pszBuf,
    DWORD cchBuf
);

<DllImport("SHLWAPI.dll", ExactSpelling:=True)>
Public Shared Function StrFormatByteSizeEx(
    ull As ULong,   ' ULONGLONG
    flags As Integer,   ' SFBS_FLAGS
    <MarshalAs(UnmanagedType.LPWStr)> pszBuf As System.Text.StringBuilder,   ' LPWSTR out
    cchBuf As UInteger   ' DWORD
) As Integer
End Function

' ull : ULONGLONG
' flags : SFBS_FLAGS
' pszBuf : LPWSTR out
' cchBuf : DWORD
Declare PtrSafe Function StrFormatByteSizeEx Lib "shlwapi" ( _
    ByVal ull As LongLong, _
    ByVal flags As Long, _
    ByVal pszBuf As LongPtr, _
    ByVal cchBuf 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

StrFormatByteSizeEx = ctypes.windll.shlwapi.StrFormatByteSizeEx
StrFormatByteSizeEx.restype = ctypes.c_int
StrFormatByteSizeEx.argtypes = [
    ctypes.c_ulonglong,  # ull : ULONGLONG
    ctypes.c_int,  # flags : SFBS_FLAGS
    wintypes.LPWSTR,  # pszBuf : LPWSTR out
    wintypes.DWORD,  # cchBuf : DWORD
]

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('SHLWAPI.dll')
StrFormatByteSizeEx = Fiddle::Function.new(
  lib['StrFormatByteSizeEx'],
  [
    -Fiddle::TYPE_LONG_LONG,  # ull : ULONGLONG
    Fiddle::TYPE_INT,  # flags : SFBS_FLAGS
    Fiddle::TYPE_VOIDP,  # pszBuf : LPWSTR out
    -Fiddle::TYPE_INT,  # cchBuf : DWORD
  ],
  Fiddle::TYPE_INT)

#[link(name = "shlwapi")]
extern "system" {
    fn StrFormatByteSizeEx(
        ull: u64,  // ULONGLONG
        flags: i32,  // SFBS_FLAGS
        pszBuf: *mut u16,  // LPWSTR out
        cchBuf: u32  // DWORD
    ) -> i32;
}
// crates: windows-sys provides ready-made bindings for this API.

$sig = @"
[DllImport("SHLWAPI.dll")]
public static extern int StrFormatByteSizeEx(ulong ull, int flags, [MarshalAs(UnmanagedType.LPWStr)] System.Text.StringBuilder pszBuf, uint cchBuf);
"@
$api = Add-Type -MemberDefinition $sig -Name 'SHLWAPI_StrFormatByteSizeEx' -Namespace Win32 -PassThru
# $api::StrFormatByteSizeEx(ull, flags, pszBuf, cchBuf)

#uselib "SHLWAPI.dll"
#func global StrFormatByteSizeEx "StrFormatByteSizeEx" sptr, sptr, sptr, sptr
; StrFormatByteSizeEx ull, flags, varptr(pszBuf), cchBuf   ; 戻り値は stat
; ull : ULONGLONG -> "sptr"
; flags : SFBS_FLAGS -> "sptr"
; pszBuf : LPWSTR out -> "sptr"
; cchBuf : DWORD -> "sptr"
; ※HSP3.7は int64 引数(64bit値渡し)に非対応です。
; ※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 (
	shlwapi = windows.NewLazySystemDLL("SHLWAPI.dll")
	procStrFormatByteSizeEx = shlwapi.NewProc("StrFormatByteSizeEx")
)

// ull (ULONGLONG), flags (SFBS_FLAGS), pszBuf (LPWSTR out), cchBuf (DWORD)
r1, _, err := procStrFormatByteSizeEx.Call(
	uintptr(ull),
	uintptr(flags),
	uintptr(pszBuf),
	uintptr(cchBuf),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // HRESULT

function StrFormatByteSizeEx(
  ull: UInt64;   // ULONGLONG
  flags: Integer;   // SFBS_FLAGS
  pszBuf: PWideChar;   // LPWSTR out
  cchBuf: DWORD   // DWORD
): Integer; stdcall;
  external 'SHLWAPI.dll' name 'StrFormatByteSizeEx';

result := DllCall("SHLWAPI\StrFormatByteSizeEx"
    , "Int64", ull   ; ULONGLONG
    , "Int", flags   ; SFBS_FLAGS
    , "Ptr", pszBuf   ; LPWSTR out
    , "UInt", cchBuf   ; DWORD
    , "Int")   ; return: HRESULT

●StrFormatByteSizeEx(ull, flags, pszBuf, cchBuf) = DLL("SHLWAPI.dll", "int StrFormatByteSizeEx(qword, int, char*, dword)")
# 呼び出し: StrFormatByteSizeEx(ull, flags, pszBuf, cchBuf)
# ull : ULONGLONG -> "qword"
# flags : SFBS_FLAGS -> "int"
# pszBuf : LPWSTR out -> "char*"
# cchBuf : DWORD -> "dword"
# 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)。

const std = @import("std");

extern "shlwapi" fn StrFormatByteSizeEx(
    ull: u64, // ULONGLONG
    flags: i32, // SFBS_FLAGS
    pszBuf: [*c]u16, // LPWSTR out
    cchBuf: u32 // DWORD
) callconv(std.os.windows.WINAPI) i32;

proc StrFormatByteSizeEx(
    ull: uint64,  # ULONGLONG
    flags: int32,  # SFBS_FLAGS
    pszBuf: ptr uint16,  # LPWSTR out
    cchBuf: uint32  # DWORD
): int32 {.importc: "StrFormatByteSizeEx", stdcall, dynlib: "SHLWAPI.dll".}

pragma(lib, "shlwapi");
extern(Windows)
int StrFormatByteSizeEx(
    ulong ull,   // ULONGLONG
    int flags,   // SFBS_FLAGS
    wchar* pszBuf,   // LPWSTR out
    uint cchBuf   // DWORD
);

ccall((:StrFormatByteSizeEx, "SHLWAPI.dll"), stdcall, Int32,
      (UInt64, Int32, Ptr{UInt16}, UInt32),
      ull, flags, pszBuf, cchBuf)
# ull : ULONGLONG -> UInt64
# flags : SFBS_FLAGS -> Int32
# pszBuf : LPWSTR out -> Ptr{UInt16}
# cchBuf : DWORD -> UInt32
# stdcall は 32bit のみ意味を持つ(x64 では無視)。

local ffi = require("ffi")
ffi.cdef[[
int32_t StrFormatByteSizeEx(
    uint64_t ull,
    int32_t flags,
    uint16_t* pszBuf,
    uint32_t cchBuf);
]]
local shlwapi = ffi.load("shlwapi")
-- shlwapi.StrFormatByteSizeEx(ull, flags, pszBuf, cchBuf)
-- ull : ULONGLONG
-- flags : SFBS_FLAGS
-- pszBuf : LPWSTR out
-- cchBuf : DWORD
-- 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('SHLWAPI.dll');
const StrFormatByteSizeEx = lib.func('__stdcall', 'StrFormatByteSizeEx', 'int32_t', ['uint64_t', 'int32_t', 'uint16_t *', 'uint32_t']);
// StrFormatByteSizeEx(ull, flags, pszBuf, cchBuf)
// ull : ULONGLONG -> 'uint64_t'
// flags : SFBS_FLAGS -> 'int32_t'
// pszBuf : LPWSTR out -> 'uint16_t *'
// cchBuf : DWORD -> 'uint32_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("SHLWAPI.dll", {
  StrFormatByteSizeEx: { parameters: ["u64", "i32", "buffer", "u32"], result: "i32" },
});
// lib.symbols.StrFormatByteSizeEx(ull, flags, pszBuf, cchBuf)
// ull : ULONGLONG -> "u64"
// flags : SFBS_FLAGS -> "i32"
// pszBuf : LPWSTR out -> "buffer"
// cchBuf : DWORD -> "u32"
// 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 StrFormatByteSizeEx(
    uint64_t ull,
    int32_t flags,
    uint16_t* pszBuf,
    uint32_t cchBuf);
C, "SHLWAPI.dll");
// $ffi->StrFormatByteSizeEx(ull, flags, pszBuf, cchBuf);
// ull : ULONGLONG
// flags : SFBS_FLAGS
// pszBuf : LPWSTR out
// cchBuf : DWORD
// 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。
// WINAPI(stdcall): x64 では呼出規約が統一されるため問題なし。x86 では __stdcall 対応のラッパが必要な場合あり。

import com.sun.jna.*;
import com.sun.jna.ptr.*;
import com.sun.jna.win32.StdCallLibrary;
import com.sun.jna.win32.W32APIOptions;

public interface Shlwapi extends StdCallLibrary {
    Shlwapi INSTANCE = Native.load("shlwapi", Shlwapi.class);
    int StrFormatByteSizeEx(
        long ull,   // ULONGLONG
        int flags,   // SFBS_FLAGS
        char[] pszBuf,   // LPWSTR out
        int cchBuf   // DWORD
    );
}

@[Link("shlwapi")]
lib LibSHLWAPI
  fun StrFormatByteSizeEx = StrFormatByteSizeEx(
    ull : UInt64,   # ULONGLONG
    flags : Int32,   # SFBS_FLAGS
    pszBuf : UInt16*,   # LPWSTR out
    cchBuf : UInt32   # DWORD
  ) : Int32
end
# 構造体/GUID/enum は lib 内に対応する型定義が必要。
# 呼出規約: x64 は規約統一のため OK。x86(32bit)は WINAPI=stdcall だが Crystal の fun に stdcall 付与構文がなく非対応。

import 'dart:ffi';
import 'package:ffi/ffi.dart';

typedef StrFormatByteSizeExNative = Int32 Function(Uint64, Int32, Pointer<Utf16>, Uint32);
typedef StrFormatByteSizeExDart = int Function(int, int, Pointer<Utf16>, int);
final StrFormatByteSizeEx = DynamicLibrary.open('SHLWAPI.dll')
    .lookupFunction<StrFormatByteSizeExNative, StrFormatByteSizeExDart>('StrFormatByteSizeEx');
// ull : ULONGLONG -> Uint64
// flags : SFBS_FLAGS -> Int32
// pszBuf : LPWSTR out -> Pointer<Utf16>
// cchBuf : DWORD -> Uint32
// 文字列は package:ffi の "...".toNativeUtf16()/toNativeUtf8() で変換。

{$mode objfpc}{$H+}
function StrFormatByteSizeEx(
  ull: UInt64;   // ULONGLONG
  flags: Integer;   // SFBS_FLAGS
  pszBuf: PWideChar;   // LPWSTR out
  cchBuf: DWORD   // DWORD
): Integer; stdcall;
  external 'SHLWAPI.dll' name 'StrFormatByteSizeEx';

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

foreign import stdcall safe "StrFormatByteSizeEx"
  c_StrFormatByteSizeEx :: Word64 -> Int32 -> CWString -> Word32 -> IO Int32
-- ull : ULONGLONG -> Word64
-- flags : SFBS_FLAGS -> Int32
-- pszBuf : LPWSTR out -> CWString
-- cchBuf : DWORD -> Word32
-- 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 strformatbytesizeex =
  foreign "StrFormatByteSizeEx"
    (uint64_t @-> int32_t @-> (ptr uint16_t) @-> uint32_t @-> returning int32_t)
(* ull : ULONGLONG -> uint64_t *)
(* flags : SFBS_FLAGS -> int32_t *)
(* pszBuf : LPWSTR out -> (ptr uint16_t) *)
(* cchBuf : DWORD -> uint32_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 shlwapi (t "SHLWAPI.dll"))
(cffi:use-foreign-library shlwapi)

(cffi:defcfun ("StrFormatByteSizeEx" str-format-byte-size-ex :convention :stdcall) :int32
  (ull :uint64)   ; ULONGLONG
  (flags :int32)   ; SFBS_FLAGS
  (psz-buf :pointer)   ; LPWSTR out
  (cch-buf :uint32))   ; DWORD
; isize/usize(INT_PTR/SIZE_T)は x64 前提で :int64/:uint64。x86 では :int32/:uint32。

use Win32::API;
my $StrFormatByteSizeEx = Win32::API::More->new('SHLWAPI',
    'int StrFormatByteSizeEx(UINT64 ull, int flags, LPWSTR pszBuf, DWORD cchBuf)');
# my $ret = $StrFormatByteSizeEx->Call($ull, $flags, $pszBuf, $cchBuf);
# ull : ULONGLONG -> UINT64
# flags : SFBS_FLAGS -> int
# pszBuf : LPWSTR out -> LPWSTR
# cchBuf : DWORD -> DWORD
# 値渡し構造体は pack() した文字列、または Win32::API::Struct を使用。