ホーム › Storage.FileSystem › FileEncryptionStatusW

FileEncryptionStatusW

関数

ファイルの暗号化状態を取得する(Unicode版)。

DLLADVAPI32.dll文字セットUnicode (-W)呼出規約winapiSetLastErrorあり対応OSWindows XP 以降

シグネチャ

// ADVAPI32.dll  (Unicode / -W)
#include <windows.h>

BOOL FileEncryptionStatusW(
    LPCWSTR lpFileName,
    DWORD* lpStatus
);

パラメーター

名前	型	方向
lpFileName	LPCWSTR	in
lpStatus	DWORD*	out

戻り値の型: BOOL

各言語での呼び出し定義

// ADVAPI32.dll  (Unicode / -W)
#include <windows.h>

BOOL FileEncryptionStatusW(
    LPCWSTR lpFileName,
    DWORD* lpStatus
);

[return: MarshalAs(UnmanagedType.Bool)]
[DllImport("ADVAPI32.dll", CharSet = CharSet.Unicode, SetLastError = true, ExactSpelling = true)]
static extern bool FileEncryptionStatusW(
    [MarshalAs(UnmanagedType.LPWStr)] string lpFileName,   // LPCWSTR
    out uint lpStatus   // DWORD* out
);

<DllImport("ADVAPI32.dll", CharSet:=CharSet.Unicode, SetLastError:=True, ExactSpelling:=True)>
Public Shared Function FileEncryptionStatusW(
    <MarshalAs(UnmanagedType.LPWStr)> lpFileName As String,   ' LPCWSTR
    <Out> ByRef lpStatus As UInteger   ' DWORD* out
) As Boolean
End Function

' lpFileName : LPCWSTR
' lpStatus : DWORD* out
Declare PtrSafe Function FileEncryptionStatusW Lib "advapi32" ( _
    ByVal lpFileName As LongPtr, _
    ByRef lpStatus 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

FileEncryptionStatusW = ctypes.windll.advapi32.FileEncryptionStatusW
FileEncryptionStatusW.restype = wintypes.BOOL
FileEncryptionStatusW.argtypes = [
    wintypes.LPCWSTR,  # lpFileName : LPCWSTR
    ctypes.POINTER(wintypes.DWORD),  # lpStatus : DWORD* out
]
# GetLastError: use ctypes.GetLastError() (or ctypes.WinDLL(use_last_error=True))

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('ADVAPI32.dll')
FileEncryptionStatusW = Fiddle::Function.new(
  lib['FileEncryptionStatusW'],
  [
    Fiddle::TYPE_VOIDP,  # lpFileName : LPCWSTR
    Fiddle::TYPE_VOIDP,  # lpStatus : DWORD* out
  ],
  Fiddle::TYPE_INT)
# Wide strings: pass str.encode("UTF-16LE") + "\x00\x00"

#[link(name = "advapi32")]
extern "system" {
    fn FileEncryptionStatusW(
        lpFileName: *const u16,  // LPCWSTR
        lpStatus: *mut u32  // DWORD* out
    ) -> i32;
}
// crates: windows-sys provides ready-made bindings for this API.

$sig = @"
[return: MarshalAs(UnmanagedType.Bool)]
[DllImport("ADVAPI32.dll", CharSet = CharSet.Unicode, SetLastError = true)]
public static extern bool FileEncryptionStatusW([MarshalAs(UnmanagedType.LPWStr)] string lpFileName, out uint lpStatus);
"@
$api = Add-Type -MemberDefinition $sig -Name 'ADVAPI32_FileEncryptionStatusW' -Namespace Win32 -PassThru
# $api::FileEncryptionStatusW(lpFileName, lpStatus)

#uselib "ADVAPI32.dll"
#func global FileEncryptionStatusW "FileEncryptionStatusW" wptr, wptr
; FileEncryptionStatusW lpFileName, varptr(lpStatus)   ; 戻り値は stat
; lpFileName : LPCWSTR -> "wptr"
; lpStatus : DWORD* out -> "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。

出力引数:

#uselib "ADVAPI32.dll"
#cfunc global FileEncryptionStatusW "FileEncryptionStatusW" wstr, var
; res = FileEncryptionStatusW(lpFileName, lpStatus)
; lpFileName : LPCWSTR -> "wstr"
; lpStatus : DWORD* out -> "var"
; ※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。#uselib "ADVAPI32.dll"
#cfunc global FileEncryptionStatusW "FileEncryptionStatusW" wstr, sptr
; res = FileEncryptionStatusW(lpFileName, varptr(lpStatus))
; lpFileName : LPCWSTR -> "wstr"
; lpStatus : DWORD* out -> "sptr"
; ※出力/バッファ引数はポインタ方式(token=sptr / 呼び出しは varptr(変数))。

出力引数:

; BOOL FileEncryptionStatusW(LPCWSTR lpFileName, DWORD* lpStatus)
#uselib "ADVAPI32.dll"
#cfunc global FileEncryptionStatusW "FileEncryptionStatusW" wstr, var
; res = FileEncryptionStatusW(lpFileName, lpStatus)
; lpFileName : LPCWSTR -> "wstr"
; lpStatus : DWORD* out -> "var"
; ※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 FileEncryptionStatusW(LPCWSTR lpFileName, DWORD* lpStatus)
#uselib "ADVAPI32.dll"
#cfunc global FileEncryptionStatusW "FileEncryptionStatusW" wstr, intptr
; res = FileEncryptionStatusW(lpFileName, varptr(lpStatus))
; lpFileName : LPCWSTR -> "wstr"
; lpStatus : DWORD* out -> "intptr"
; ※出力/バッファ引数はポインタ方式(token=intptr / 呼び出しは varptr(変数))。

import (
	"golang.org/x/sys/windows"
	"unsafe"
)

var (
	advapi32 = windows.NewLazySystemDLL("ADVAPI32.dll")
	procFileEncryptionStatusW = advapi32.NewProc("FileEncryptionStatusW")
)

// lpFileName (LPCWSTR), lpStatus (DWORD* out)
r1, _, err := procFileEncryptionStatusW.Call(
	uintptr(unsafe.Pointer(windows.StringToUTF16Ptr(lpFileName))),
	uintptr(lpStatus),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // BOOL

function FileEncryptionStatusW(
  lpFileName: PWideChar;   // LPCWSTR
  lpStatus: Pointer   // DWORD* out
): BOOL; stdcall;
  external 'ADVAPI32.dll' name 'FileEncryptionStatusW';

result := DllCall("ADVAPI32\FileEncryptionStatusW"
    , "WStr", lpFileName   ; LPCWSTR
    , "Ptr", lpStatus   ; DWORD* out
    , "Int")   ; return: BOOL

●FileEncryptionStatusW(lpFileName, lpStatus) = DLL("ADVAPI32.dll", "bool FileEncryptionStatusW(char*, void*)")
# 呼び出し: FileEncryptionStatusW(lpFileName, lpStatus)
# lpFileName : LPCWSTR -> "char*"
# lpStatus : DWORD* 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)。
# ※-W(Unicode)関数。なでしこ1はANSIのため -A 版の利用を推奨。