EncryptFileA

関数

指定ファイルをEFSにより暗号化する(ANSI版)。

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

シグネチャ

// ADVAPI32.dll  (ANSI / -A)
#include <windows.h>

BOOL EncryptFileA(
    LPCSTR lpFileName
);

パラメーター

名前	型	方向
lpFileName	LPCSTR	in

戻り値の型: BOOL

各言語での呼び出し定義

// ADVAPI32.dll  (ANSI / -A)
#include <windows.h>

BOOL EncryptFileA(
    LPCSTR lpFileName
);

[return: MarshalAs(UnmanagedType.Bool)]
[DllImport("ADVAPI32.dll", CharSet = CharSet.Ansi, SetLastError = true, ExactSpelling = true)]
static extern bool EncryptFileA(
    [MarshalAs(UnmanagedType.LPStr)] string lpFileName   // LPCSTR
);

<DllImport("ADVAPI32.dll", CharSet:=CharSet.Ansi, SetLastError:=True, ExactSpelling:=True)>
Public Shared Function EncryptFileA(
    <MarshalAs(UnmanagedType.LPStr)> lpFileName As String   ' LPCSTR
) As Boolean
End Function

' lpFileName : LPCSTR
Declare PtrSafe Function EncryptFileA Lib "advapi32" ( _
    ByVal lpFileName As String) As Long
' VBA7前提(PtrSafe)。32bit Office では LongPtr→Long。Integer=16bit / Long=32bit / LongLong=64bit。

import ctypes
from ctypes import wintypes

EncryptFileA = ctypes.windll.advapi32.EncryptFileA
EncryptFileA.restype = wintypes.BOOL
EncryptFileA.argtypes = [
    wintypes.LPCSTR,  # lpFileName : LPCSTR
]
# GetLastError: use ctypes.GetLastError() (or ctypes.WinDLL(use_last_error=True))

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('ADVAPI32.dll')
EncryptFileA = Fiddle::Function.new(
  lib['EncryptFileA'],
  [
    Fiddle::TYPE_VOIDP,  # lpFileName : LPCSTR
  ],
  Fiddle::TYPE_INT)

#[link(name = "advapi32")]
extern "system" {
    fn EncryptFileA(
        lpFileName: *const u8  // LPCSTR
    ) -> i32;
}
// crates: windows-sys provides ready-made bindings for this API.

$sig = @"
[return: MarshalAs(UnmanagedType.Bool)]
[DllImport("ADVAPI32.dll", CharSet = CharSet.Ansi, SetLastError = true)]
public static extern bool EncryptFileA([MarshalAs(UnmanagedType.LPStr)] string lpFileName);
"@
$api = Add-Type -MemberDefinition $sig -Name 'ADVAPI32_EncryptFileA' -Namespace Win32 -PassThru
# $api::EncryptFileA(lpFileName)

#uselib "ADVAPI32.dll"
#func global EncryptFileA "EncryptFileA" sptr
; EncryptFileA lpFileName   ; 戻り値は stat
; lpFileName : LPCSTR -> "sptr"
; ※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 "ADVAPI32.dll"
#cfunc global EncryptFileA "EncryptFileA" str
; res = EncryptFileA(lpFileName)
; lpFileName : LPCSTR -> "str"

; BOOL EncryptFileA(LPCSTR lpFileName)
#uselib "ADVAPI32.dll"
#cfunc global EncryptFileA "EncryptFileA" str
; res = EncryptFileA(lpFileName)
; lpFileName : LPCSTR -> "str"

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

var (
	advapi32 = windows.NewLazySystemDLL("ADVAPI32.dll")
	procEncryptFileA = advapi32.NewProc("EncryptFileA")
)

// lpFileName (LPCSTR)
r1, _, err := procEncryptFileA.Call(
	uintptr(unsafe.Pointer(windows.BytePtrFromString(lpFileName))),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // BOOL

function EncryptFileA(
  lpFileName: PAnsiChar   // LPCSTR
): BOOL; stdcall;
  external 'ADVAPI32.dll' name 'EncryptFileA';

result := DllCall("ADVAPI32\EncryptFileA"
    , "AStr", lpFileName   ; LPCSTR
    , "Int")   ; return: BOOL

●EncryptFileA(lpFileName) = DLL("ADVAPI32.dll", "bool EncryptFileA(char*)")
# 呼び出し: EncryptFileA(lpFileName)
# lpFileName : LPCSTR -> "char*"
# 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)。