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。

#uselib "SHELL32.dll"
#cfunc global SHGetFileInfoW "SHGetFileInfoW" wstr, int, var, int, int
; res = SHGetFileInfoW(pszPath, dwFileAttributes, psfi, cbFileInfo, uFlags)
; pszPath : LPCWSTR -> "wstr"
; dwFileAttributes : FILE_FLAGS_AND_ATTRIBUTES -> "int"
; psfi : SHFILEINFOW* optional, in/out -> "var"
; cbFileInfo : DWORD -> "int"
; uFlags : SHGFI_FLAGS -> "int"
; ※出力/バッファ引数は var 方式(変数を直接渡す)。varptr 方式にも切替可。

; UINT_PTR SHGetFileInfoW(LPCWSTR pszPath, FILE_FLAGS_AND_ATTRIBUTES dwFileAttributes, SHFILEINFOW* psfi, DWORD cbFileInfo, SHGFI_FLAGS uFlags)
#uselib "SHELL32.dll"
#cfunc global SHGetFileInfoW "SHGetFileInfoW" wstr, int, var, int, int
; res = SHGetFileInfoW(pszPath, dwFileAttributes, psfi, cbFileInfo, uFlags)
; pszPath : LPCWSTR -> "wstr"
; dwFileAttributes : FILE_FLAGS_AND_ATTRIBUTES -> "int"
; psfi : SHFILEINFOW* optional, in/out -> "var"
; cbFileInfo : DWORD -> "int"
; uFlags : SHGFI_FLAGS -> "int"
; ※出力/バッファ引数は var 方式(変数を直接渡す)。varptr 方式にも切替可。

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。