SetupQuerySpaceRequiredOnDriveW

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

BOOL SetupQuerySpaceRequiredOnDriveW(
    void* DiskSpace,
    LPCWSTR DriveSpec,
    LONGLONG* SpaceRequired,
    void* Reserved1,   // optional
    DWORD Reserved2   // optional
);

<DllImport("SETUPAPI.dll", CharSet:=CharSet.Unicode, SetLastError:=True, ExactSpelling:=True)>
Public Shared Function SetupQuerySpaceRequiredOnDriveW(
    DiskSpace As IntPtr,   ' void*
    <MarshalAs(UnmanagedType.LPWStr)> DriveSpec As String,   ' LPCWSTR
    <Out> ByRef SpaceRequired As Long,   ' LONGLONG* out
    Reserved1 As IntPtr,   ' void* optional
    Reserved2 As UInteger   ' DWORD optional
) As Boolean
End Function

' DiskSpace : void*
' DriveSpec : LPCWSTR
' SpaceRequired : LONGLONG* out
' Reserved1 : void* optional
' Reserved2 : DWORD optional
Declare PtrSafe Function SetupQuerySpaceRequiredOnDriveW Lib "setupapi" ( _
    ByVal DiskSpace As LongPtr, _
    ByVal DriveSpec As LongPtr, _
    ByRef SpaceRequired As LongLong, _
    ByVal Reserved1 As LongPtr, _
    ByVal Reserved2 As Long) As Long
' 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

SetupQuerySpaceRequiredOnDriveW = ctypes.windll.setupapi.SetupQuerySpaceRequiredOnDriveW
SetupQuerySpaceRequiredOnDriveW.restype = wintypes.BOOL
SetupQuerySpaceRequiredOnDriveW.argtypes = [
    ctypes.POINTER(None),  # DiskSpace : void*
    wintypes.LPCWSTR,  # DriveSpec : LPCWSTR
    ctypes.POINTER(ctypes.c_longlong),  # SpaceRequired : LONGLONG* out
    ctypes.POINTER(None),  # Reserved1 : void* optional
    wintypes.DWORD,  # Reserved2 : DWORD optional
]
# GetLastError: use ctypes.GetLastError() (or ctypes.WinDLL(use_last_error=True))

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('SETUPAPI.dll')
SetupQuerySpaceRequiredOnDriveW = Fiddle::Function.new(
  lib['SetupQuerySpaceRequiredOnDriveW'],
  [
    Fiddle::TYPE_VOIDP,  # DiskSpace : void*
    Fiddle::TYPE_VOIDP,  # DriveSpec : LPCWSTR
    Fiddle::TYPE_VOIDP,  # SpaceRequired : LONGLONG* out
    Fiddle::TYPE_VOIDP,  # Reserved1 : void* optional
    -Fiddle::TYPE_INT,  # Reserved2 : DWORD optional
  ],
  Fiddle::TYPE_INT)
# Wide strings: pass str.encode("UTF-16LE") + "\x00\x00"

#[link(name = "setupapi")]
extern "system" {
    fn SetupQuerySpaceRequiredOnDriveW(
        DiskSpace: *mut (),  // void*
        DriveSpec: *const u16,  // LPCWSTR
        SpaceRequired: *mut i64,  // LONGLONG* out
        Reserved1: *mut (),  // void* optional
        Reserved2: u32  // DWORD optional
    ) -> i32;
}
// crates: windows-sys provides ready-made bindings for this API.

$sig = @"
[return: MarshalAs(UnmanagedType.Bool)]
[DllImport("SETUPAPI.dll", CharSet = CharSet.Unicode, SetLastError = true)]
public static extern bool SetupQuerySpaceRequiredOnDriveW(IntPtr DiskSpace, [MarshalAs(UnmanagedType.LPWStr)] string DriveSpec, out long SpaceRequired, IntPtr Reserved1, uint Reserved2);
"@
$api = Add-Type -MemberDefinition $sig -Name 'SETUPAPI_SetupQuerySpaceRequiredOnDriveW' -Namespace Win32 -PassThru
# $api::SetupQuerySpaceRequiredOnDriveW(DiskSpace, DriveSpec, SpaceRequired, Reserved1, Reserved2)

#uselib "SETUPAPI.dll"
#func global SetupQuerySpaceRequiredOnDriveW "SetupQuerySpaceRequiredOnDriveW" wptr, wptr, wptr, wptr, wptr
; SetupQuerySpaceRequiredOnDriveW DiskSpace, DriveSpec, varptr(SpaceRequired), Reserved1, Reserved2   ; 戻り値は stat
; DiskSpace : void* -> "wptr"
; DriveSpec : LPCWSTR -> "wptr"
; SpaceRequired : LONGLONG* out -> "wptr"
; Reserved1 : void* optional -> "wptr"
; Reserved2 : DWORD optional -> "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 "SETUPAPI.dll"
#cfunc global SetupQuerySpaceRequiredOnDriveW "SetupQuerySpaceRequiredOnDriveW" sptr, wstr, var, sptr, int
; res = SetupQuerySpaceRequiredOnDriveW(DiskSpace, DriveSpec, SpaceRequired, Reserved1, Reserved2)
; DiskSpace : void* -> "sptr"
; DriveSpec : LPCWSTR -> "wstr"
; SpaceRequired : LONGLONG* out -> "var"
; Reserved1 : void* optional -> "sptr"
; Reserved2 : DWORD optional -> "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。

; BOOL SetupQuerySpaceRequiredOnDriveW(void* DiskSpace, LPCWSTR DriveSpec, LONGLONG* SpaceRequired, void* Reserved1, DWORD Reserved2)
#uselib "SETUPAPI.dll"
#cfunc global SetupQuerySpaceRequiredOnDriveW "SetupQuerySpaceRequiredOnDriveW" intptr, wstr, var, intptr, int
; res = SetupQuerySpaceRequiredOnDriveW(DiskSpace, DriveSpec, SpaceRequired, Reserved1, Reserved2)
; DiskSpace : void* -> "intptr"
; DriveSpec : LPCWSTR -> "wstr"
; SpaceRequired : LONGLONG* out -> "var"
; Reserved1 : void* optional -> "intptr"
; Reserved2 : DWORD optional -> "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 (
	setupapi = windows.NewLazySystemDLL("SETUPAPI.dll")
	procSetupQuerySpaceRequiredOnDriveW = setupapi.NewProc("SetupQuerySpaceRequiredOnDriveW")
)

// DiskSpace (void*), DriveSpec (LPCWSTR), SpaceRequired (LONGLONG* out), Reserved1 (void* optional), Reserved2 (DWORD optional)
r1, _, err := procSetupQuerySpaceRequiredOnDriveW.Call(
	uintptr(DiskSpace),
	uintptr(unsafe.Pointer(windows.StringToUTF16Ptr(DriveSpec))),
	uintptr(SpaceRequired),
	uintptr(Reserved1),
	uintptr(Reserved2),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // BOOL

function SetupQuerySpaceRequiredOnDriveW(
  DiskSpace: Pointer;   // void*
  DriveSpec: PWideChar;   // LPCWSTR
  SpaceRequired: Pointer;   // LONGLONG* out
  Reserved1: Pointer;   // void* optional
  Reserved2: DWORD   // DWORD optional
): BOOL; stdcall;
  external 'SETUPAPI.dll' name 'SetupQuerySpaceRequiredOnDriveW';

result := DllCall("SETUPAPI\SetupQuerySpaceRequiredOnDriveW"
    , "Ptr", DiskSpace   ; void*
    , "WStr", DriveSpec   ; LPCWSTR
    , "Ptr", SpaceRequired   ; LONGLONG* out
    , "Ptr", Reserved1   ; void* optional
    , "UInt", Reserved2   ; DWORD optional
    , "Int")   ; return: BOOL

●SetupQuerySpaceRequiredOnDriveW(DiskSpace, DriveSpec, SpaceRequired, Reserved1, Reserved2) = DLL("SETUPAPI.dll", "bool SetupQuerySpaceRequiredOnDriveW(void*, char*, void*, void*, dword)")
# 呼び出し: SetupQuerySpaceRequiredOnDriveW(DiskSpace, DriveSpec, SpaceRequired, Reserved1, Reserved2)
# DiskSpace : void* -> "void*"
# DriveSpec : LPCWSTR -> "char*"
# SpaceRequired : LONGLONG* out -> "void*"
# Reserved1 : void* optional -> "void*"
# Reserved2 : DWORD optional -> "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。