SHGetFileInfoW

// SHELL32.dll  (Unicode / -W)
#include <windows.h>

UINT_PTR SHGetFileInfoW(
    LPCWSTR pszPath,
    FILE_FLAGS_AND_ATTRIBUTES dwFileAttributes,
    SHFILEINFOW* psfi,   // optional
    DWORD cbFileInfo,
    SHGFI_FLAGS uFlags
);

<DllImport("SHELL32.dll", CharSet:=CharSet.Unicode, ExactSpelling:=True)>
Public Shared Function SHGetFileInfoW(
    <MarshalAs(UnmanagedType.LPWStr)> pszPath As String,   ' LPCWSTR
    dwFileAttributes As UInteger,   ' FILE_FLAGS_AND_ATTRIBUTES
    psfi As IntPtr,   ' SHFILEINFOW* optional, in/out
    cbFileInfo As UInteger,   ' DWORD
    uFlags As UInteger   ' SHGFI_FLAGS
) As UIntPtr
End Function

' pszPath : LPCWSTR
' dwFileAttributes : FILE_FLAGS_AND_ATTRIBUTES
' psfi : SHFILEINFOW* optional, in/out
' cbFileInfo : DWORD
' uFlags : SHGFI_FLAGS
Declare PtrSafe Function SHGetFileInfoW Lib "shell32" ( _
    ByVal pszPath As LongPtr, _
    ByVal dwFileAttributes As Long, _
    ByVal psfi As LongPtr, _
    ByVal cbFileInfo As Long, _
    ByVal uFlags As Long) As LongPtr
' Unicode(W): 文字列は ByVal As LongPtr とし StrPtr(unicodeStr) を渡す
' VBA7前提(PtrSafe)。32bit Office では LongPtr→Long。Integer=16bit / Long=32bit / LongLong=64bit。

import ctypes
from ctypes import wintypes

SHGetFileInfoW = ctypes.windll.shell32.SHGetFileInfoW
SHGetFileInfoW.restype = ctypes.c_size_t
SHGetFileInfoW.argtypes = [
    wintypes.LPCWSTR,  # pszPath : LPCWSTR
    wintypes.DWORD,  # dwFileAttributes : FILE_FLAGS_AND_ATTRIBUTES
    ctypes.c_void_p,  # psfi : SHFILEINFOW* optional, in/out
    wintypes.DWORD,  # cbFileInfo : DWORD
    wintypes.DWORD,  # uFlags : SHGFI_FLAGS
]

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('SHELL32.dll')
SHGetFileInfoW = Fiddle::Function.new(
  lib['SHGetFileInfoW'],
  [
    Fiddle::TYPE_VOIDP,  # pszPath : LPCWSTR
    -Fiddle::TYPE_INT,  # dwFileAttributes : FILE_FLAGS_AND_ATTRIBUTES
    Fiddle::TYPE_VOIDP,  # psfi : SHFILEINFOW* optional, in/out
    -Fiddle::TYPE_INT,  # cbFileInfo : DWORD
    -Fiddle::TYPE_INT,  # uFlags : SHGFI_FLAGS
  ],
  Fiddle::TYPE_UINTPTR_T)
# Wide strings: pass str.encode("UTF-16LE") + "\x00\x00"

#[link(name = "shell32")]
extern "system" {
    fn SHGetFileInfoW(
        pszPath: *const u16,  // LPCWSTR
        dwFileAttributes: u32,  // FILE_FLAGS_AND_ATTRIBUTES
        psfi: *mut SHFILEINFOW,  // SHFILEINFOW* optional, in/out
        cbFileInfo: u32,  // DWORD
        uFlags: u32  // SHGFI_FLAGS
    ) -> usize;
}
// crates: windows-sys provides ready-made bindings for this API.

$sig = @"
[DllImport("SHELL32.dll", CharSet = CharSet.Unicode)]
public static extern UIntPtr SHGetFileInfoW([MarshalAs(UnmanagedType.LPWStr)] string pszPath, uint dwFileAttributes, IntPtr psfi, uint cbFileInfo, uint uFlags);
"@
$api = Add-Type -MemberDefinition $sig -Name 'SHELL32_SHGetFileInfoW' -Namespace Win32 -PassThru
# $api::SHGetFileInfoW(pszPath, dwFileAttributes, psfi, cbFileInfo, uFlags)

#uselib "SHELL32.dll"
#func global SHGetFileInfoW "SHGetFileInfoW" wptr, wptr, wptr, wptr, wptr
; SHGetFileInfoW pszPath, dwFileAttributes, varptr(psfi), cbFileInfo, uFlags   ; 戻り値は stat
; pszPath : LPCWSTR -> "wptr"
; dwFileAttributes : FILE_FLAGS_AND_ATTRIBUTES -> "wptr"
; psfi : SHFILEINFOW* optional, in/out -> "wptr"
; cbFileInfo : DWORD -> "wptr"
; uFlags : SHGFI_FLAGS -> "wptr"
; ※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 (
	shell32 = windows.NewLazySystemDLL("SHELL32.dll")
	procSHGetFileInfoW = shell32.NewProc("SHGetFileInfoW")
)

// pszPath (LPCWSTR), dwFileAttributes (FILE_FLAGS_AND_ATTRIBUTES), psfi (SHFILEINFOW* optional, in/out), cbFileInfo (DWORD), uFlags (SHGFI_FLAGS)
r1, _, err := procSHGetFileInfoW.Call(
	uintptr(unsafe.Pointer(windows.StringToUTF16Ptr(pszPath))),
	uintptr(dwFileAttributes),
	uintptr(psfi),
	uintptr(cbFileInfo),
	uintptr(uFlags),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // UINT_PTR

function SHGetFileInfoW(
  pszPath: PWideChar;   // LPCWSTR
  dwFileAttributes: DWORD;   // FILE_FLAGS_AND_ATTRIBUTES
  psfi: Pointer;   // SHFILEINFOW* optional, in/out
  cbFileInfo: DWORD;   // DWORD
  uFlags: DWORD   // SHGFI_FLAGS
): NativeUInt; stdcall;
  external 'SHELL32.dll' name 'SHGetFileInfoW';

result := DllCall("SHELL32\SHGetFileInfoW"
    , "WStr", pszPath   ; LPCWSTR
    , "UInt", dwFileAttributes   ; FILE_FLAGS_AND_ATTRIBUTES
    , "Ptr", psfi   ; SHFILEINFOW* optional, in/out
    , "UInt", cbFileInfo   ; DWORD
    , "UInt", uFlags   ; SHGFI_FLAGS
    , "UPtr")   ; return: UINT_PTR

●SHGetFileInfoW(pszPath, dwFileAttributes, psfi, cbFileInfo, uFlags) = DLL("SHELL32.dll", "int SHGetFileInfoW(char*, dword, void*, dword, dword)")
# 呼び出し: SHGetFileInfoW(pszPath, dwFileAttributes, psfi, cbFileInfo, uFlags)
# pszPath : LPCWSTR -> "char*"
# dwFileAttributes : FILE_FLAGS_AND_ATTRIBUTES -> "dword"
# psfi : SHFILEINFOW* optional, in/out -> "void*"
# cbFileInfo : DWORD -> "dword"
# uFlags : SHGFI_FLAGS -> "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)。
# ※-W(Unicode)関数。なでしこ1はANSIのため -A 版の利用を推奨。

const std = @import("std");

extern "shell32" fn SHGetFileInfoW(
    pszPath: [*c]const u16, // LPCWSTR
    dwFileAttributes: u32, // FILE_FLAGS_AND_ATTRIBUTES
    psfi: [*c]SHFILEINFOW, // SHFILEINFOW* optional, in/out
    cbFileInfo: u32, // DWORD
    uFlags: u32 // SHGFI_FLAGS
) callconv(std.os.windows.WINAPI) usize;
// Unicode(-W): UTF-16LE のヌル終端バッファ([*c]const u16)を渡す。

proc SHGetFileInfoW(
    pszPath: WideCString,  # LPCWSTR
    dwFileAttributes: uint32,  # FILE_FLAGS_AND_ATTRIBUTES
    psfi: ptr SHFILEINFOW,  # SHFILEINFOW* optional, in/out
    cbFileInfo: uint32,  # DWORD
    uFlags: uint32  # SHGFI_FLAGS
): uint {.importc: "SHGetFileInfoW", stdcall, dynlib: "SHELL32.dll".}
# Unicode(-W): WideCString は newWideCString("...") で生成。

pragma(lib, "shell32");
extern(Windows)
size_t SHGetFileInfoW(
    const(wchar)* pszPath,   // LPCWSTR
    uint dwFileAttributes,   // FILE_FLAGS_AND_ATTRIBUTES
    SHFILEINFOW* psfi,   // SHFILEINFOW* optional, in/out
    uint cbFileInfo,   // DWORD
    uint uFlags   // SHGFI_FLAGS
);

ccall((:SHGetFileInfoW, "SHELL32.dll"), stdcall, Csize_t,
      (Cwstring, UInt32, Ptr{SHFILEINFOW}, UInt32, UInt32),
      pszPath, dwFileAttributes, psfi, cbFileInfo, uFlags)
# pszPath : LPCWSTR -> Cwstring
# dwFileAttributes : FILE_FLAGS_AND_ATTRIBUTES -> UInt32
# psfi : SHFILEINFOW* optional, in/out -> Ptr{SHFILEINFOW}
# cbFileInfo : DWORD -> UInt32
# uFlags : SHGFI_FLAGS -> UInt32
# stdcall は 32bit のみ意味を持つ(x64 では無視)。
# Unicode(-W): Cwstring には transcode(UInt16, "...") 等で UTF-16 を渡す。

local ffi = require("ffi")
ffi.cdef[[
uintptr_t SHGetFileInfoW(
    const uint16_t* pszPath,
    uint32_t dwFileAttributes,
    void* psfi,
    uint32_t cbFileInfo,
    uint32_t uFlags);
]]
local shell32 = ffi.load("shell32")
-- shell32.SHGetFileInfoW(pszPath, dwFileAttributes, psfi, cbFileInfo, uFlags)
-- pszPath : LPCWSTR
-- dwFileAttributes : FILE_FLAGS_AND_ATTRIBUTES
-- psfi : SHFILEINFOW* optional, in/out
-- cbFileInfo : DWORD
-- uFlags : SHGFI_FLAGS
-- 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。
-- Unicode(-W): uint16_t* には UTF-16LE のバッファ(ffi.new("uint16_t[?]", ...))を渡す。

const koffi = require('koffi');
const lib = koffi.load('SHELL32.dll');
const SHGetFileInfoW = lib.func('__stdcall', 'SHGetFileInfoW', 'uintptr_t', ['str16', 'uint32_t', 'void *', 'uint32_t', 'uint32_t']);
// SHGetFileInfoW(pszPath, dwFileAttributes, psfi, cbFileInfo, uFlags)
// pszPath : LPCWSTR -> 'str16'
// dwFileAttributes : FILE_FLAGS_AND_ATTRIBUTES -> 'uint32_t'
// psfi : SHFILEINFOW* optional, in/out -> 'void *'
// cbFileInfo : DWORD -> 'uint32_t'
// uFlags : SHGFI_FLAGS -> '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("SHELL32.dll", {
  SHGetFileInfoW: { parameters: ["buffer", "u32", "pointer", "u32", "u32"], result: "usize" },
});
// lib.symbols.SHGetFileInfoW(pszPath, dwFileAttributes, psfi, cbFileInfo, uFlags)
// pszPath : LPCWSTR -> "buffer"
// dwFileAttributes : FILE_FLAGS_AND_ATTRIBUTES -> "u32"
// psfi : SHFILEINFOW* optional, in/out -> "pointer"
// cbFileInfo : DWORD -> "u32"
// uFlags : SHGFI_FLAGS -> "u32"
// 文字列は "buffer"。Unicode(-W) は new TextEncoder() ではなく UTF-16LE のバイト列(末尾に \x00\x00)を Uint8Array で渡す。
// 値渡し構造体は { struct: [ ...field types... ] } を使用。

<?php
$ffi = FFI::cdef(<<<C
size_t SHGetFileInfoW(
    const uint16_t* pszPath,
    uint32_t dwFileAttributes,
    void* psfi,
    uint32_t cbFileInfo,
    uint32_t uFlags);
C, "SHELL32.dll");
// $ffi->SHGetFileInfoW(pszPath, dwFileAttributes, psfi, cbFileInfo, uFlags);
// pszPath : LPCWSTR
// dwFileAttributes : FILE_FLAGS_AND_ATTRIBUTES
// psfi : SHFILEINFOW* optional, in/out
// cbFileInfo : DWORD
// uFlags : SHGFI_FLAGS
// 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 Shell32 extends StdCallLibrary {
    Shell32 INSTANCE = Native.load("shell32", Shell32.class, W32APIOptions.UNICODE_OPTIONS);
    long SHGetFileInfoW(
        WString pszPath,   // LPCWSTR
        int dwFileAttributes,   // FILE_FLAGS_AND_ATTRIBUTES
        Pointer psfi,   // SHFILEINFOW* optional, in/out
        int cbFileInfo,   // DWORD
        int uFlags   // SHGFI_FLAGS
    );
}
// Unicode(-W): WString(入力)/char[](出力)で UTF-16 をマーシャリング。

@[Link("shell32")]
lib LibSHELL32
  fun SHGetFileInfoW = SHGetFileInfoW(
    pszPath : UInt16*,   # LPCWSTR
    dwFileAttributes : UInt32,   # FILE_FLAGS_AND_ATTRIBUTES
    psfi : SHFILEINFOW*,   # SHFILEINFOW* optional, in/out
    cbFileInfo : UInt32,   # DWORD
    uFlags : UInt32   # SHGFI_FLAGS
  ) : LibC::SizeT
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 SHGetFileInfoWNative = UintPtr Function(Pointer<Utf16>, Uint32, Pointer<Void>, Uint32, Uint32);
typedef SHGetFileInfoWDart = int Function(Pointer<Utf16>, int, Pointer<Void>, int, int);
final SHGetFileInfoW = DynamicLibrary.open('SHELL32.dll')
    .lookupFunction<SHGetFileInfoWNative, SHGetFileInfoWDart>('SHGetFileInfoW');
// pszPath : LPCWSTR -> Pointer<Utf16>
// dwFileAttributes : FILE_FLAGS_AND_ATTRIBUTES -> Uint32
// psfi : SHFILEINFOW* optional, in/out -> Pointer<Void>
// cbFileInfo : DWORD -> Uint32
// uFlags : SHGFI_FLAGS -> Uint32
// 文字列は package:ffi の "...".toNativeUtf16()/toNativeUtf8() で変換。

{$mode objfpc}{$H+}
function SHGetFileInfoW(
  pszPath: PWideChar;   // LPCWSTR
  dwFileAttributes: DWORD;   // FILE_FLAGS_AND_ATTRIBUTES
  psfi: Pointer;   // SHFILEINFOW* optional, in/out
  cbFileInfo: DWORD;   // DWORD
  uFlags: DWORD   // SHGFI_FLAGS
): NativeUInt; stdcall;
  external 'SHELL32.dll' name 'SHGetFileInfoW';

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

foreign import stdcall safe "SHGetFileInfoW"
  c_SHGetFileInfoW :: CWString -> Word32 -> Ptr () -> Word32 -> Word32 -> IO CUIntPtr
-- pszPath : LPCWSTR -> CWString
-- dwFileAttributes : FILE_FLAGS_AND_ATTRIBUTES -> Word32
-- psfi : SHFILEINFOW* optional, in/out -> Ptr ()
-- cbFileInfo : DWORD -> Word32
-- uFlags : SHGFI_FLAGS -> 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 shgetfileinfow =
  foreign "SHGetFileInfoW"
    ((ptr uint16_t) @-> uint32_t @-> (ptr void) @-> uint32_t @-> uint32_t @-> returning size_t)
(* pszPath : LPCWSTR -> (ptr uint16_t) *)
(* dwFileAttributes : FILE_FLAGS_AND_ATTRIBUTES -> uint32_t *)
(* psfi : SHFILEINFOW* optional, in/out -> (ptr void) *)
(* cbFileInfo : DWORD -> uint32_t *)
(* uFlags : SHGFI_FLAGS -> 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 shell32 (t "SHELL32.dll"))
(cffi:use-foreign-library shell32)

(cffi:defcfun ("SHGetFileInfoW" shget-file-info-w :convention :stdcall) :uint64
  (psz-path (:string :encoding :utf-16le))   ; LPCWSTR
  (dw-file-attributes :uint32)   ; FILE_FLAGS_AND_ATTRIBUTES
  (psfi :pointer)   ; SHFILEINFOW* optional, in/out
  (cb-file-info :uint32)   ; DWORD
  (u-flags :uint32))   ; SHGFI_FLAGS
; isize/usize(INT_PTR/SIZE_T)は x64 前提で :int64/:uint64。x86 では :int32/:uint32。

use Win32::API;
my $SHGetFileInfoW = Win32::API::More->new('SHELL32',
    'WPARAM SHGetFileInfoW(LPCWSTR pszPath, DWORD dwFileAttributes, LPVOID psfi, DWORD cbFileInfo, DWORD uFlags)');
# my $ret = $SHGetFileInfoW->Call($pszPath, $dwFileAttributes, $psfi, $cbFileInfo, $uFlags);
# pszPath : LPCWSTR -> LPCWSTR
# dwFileAttributes : FILE_FLAGS_AND_ATTRIBUTES -> DWORD
# psfi : SHFILEINFOW* optional, in/out -> LPVOID
# cbFileInfo : DWORD -> DWORD
# uFlags : SHGFI_FLAGS -> DWORD
# 値渡し構造体は pack() した文字列、または Win32::API::Struct を使用。
# Unicode(-W): LPCWSTR/LPWSTR は Win32::API が UTF-16 変換を行う。