RegEnumKeyExW

関数

サブキー名やクラス、最終更新時刻を列挙して取得する。

DLLADVAPI32.dll文字セットUnicode (-W)呼出規約winapi対応OSWindows 2000 以降

シグネチャ

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

WIN32_ERROR RegEnumKeyExW(
    HKEY hKey,
    DWORD dwIndex,
    LPWSTR lpName,   // optional
    DWORD* lpcchName,
    DWORD* lpReserved,   // optional
    LPWSTR lpClass,   // optional
    DWORD* lpcchClass,   // optional
    FILETIME* lpftLastWriteTime   // optional
);

パラメーター

名前	型	方向
hKey	HKEY	in
dwIndex	DWORD	in
lpName	LPWSTR	outoptional
lpcchName	DWORD*	inout
lpReserved	DWORD*	optional
lpClass	LPWSTR	outoptional
lpcchClass	DWORD*	inoutoptional
lpftLastWriteTime	FILETIME*	outoptional

戻り値の型: WIN32_ERROR

各言語での呼び出し定義

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

WIN32_ERROR RegEnumKeyExW(
    HKEY hKey,
    DWORD dwIndex,
    LPWSTR lpName,   // optional
    DWORD* lpcchName,
    DWORD* lpReserved,   // optional
    LPWSTR lpClass,   // optional
    DWORD* lpcchClass,   // optional
    FILETIME* lpftLastWriteTime   // optional
);

[DllImport("ADVAPI32.dll", CharSet = CharSet.Unicode, ExactSpelling = true)]
static extern uint RegEnumKeyExW(
    IntPtr hKey,   // HKEY
    uint dwIndex,   // DWORD
    [MarshalAs(UnmanagedType.LPWStr)] System.Text.StringBuilder lpName,   // LPWSTR optional, out
    ref uint lpcchName,   // DWORD* in/out
    IntPtr lpReserved,   // DWORD* optional
    [MarshalAs(UnmanagedType.LPWStr)] System.Text.StringBuilder lpClass,   // LPWSTR optional, out
    IntPtr lpcchClass,   // DWORD* optional, in/out
    IntPtr lpftLastWriteTime   // FILETIME* optional, out
);

<DllImport("ADVAPI32.dll", CharSet:=CharSet.Unicode, ExactSpelling:=True)>
Public Shared Function RegEnumKeyExW(
    hKey As IntPtr,   ' HKEY
    dwIndex As UInteger,   ' DWORD
    <MarshalAs(UnmanagedType.LPWStr)> lpName As System.Text.StringBuilder,   ' LPWSTR optional, out
    ByRef lpcchName As UInteger,   ' DWORD* in/out
    lpReserved As IntPtr,   ' DWORD* optional
    <MarshalAs(UnmanagedType.LPWStr)> lpClass As System.Text.StringBuilder,   ' LPWSTR optional, out
    lpcchClass As IntPtr,   ' DWORD* optional, in/out
    lpftLastWriteTime As IntPtr   ' FILETIME* optional, out
) As UInteger
End Function

' hKey : HKEY
' dwIndex : DWORD
' lpName : LPWSTR optional, out
' lpcchName : DWORD* in/out
' lpReserved : DWORD* optional
' lpClass : LPWSTR optional, out
' lpcchClass : DWORD* optional, in/out
' lpftLastWriteTime : FILETIME* optional, out
Declare PtrSafe Function RegEnumKeyExW Lib "advapi32" ( _
    ByVal hKey As LongPtr, _
    ByVal dwIndex As Long, _
    ByVal lpName As LongPtr, _
    ByRef lpcchName As Long, _
    ByVal lpReserved As LongPtr, _
    ByVal lpClass As LongPtr, _
    ByVal lpcchClass As LongPtr, _
    ByVal lpftLastWriteTime As LongPtr) 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

RegEnumKeyExW = ctypes.windll.advapi32.RegEnumKeyExW
RegEnumKeyExW.restype = wintypes.DWORD
RegEnumKeyExW.argtypes = [
    wintypes.HANDLE,  # hKey : HKEY
    wintypes.DWORD,  # dwIndex : DWORD
    wintypes.LPWSTR,  # lpName : LPWSTR optional, out
    ctypes.POINTER(wintypes.DWORD),  # lpcchName : DWORD* in/out
    ctypes.POINTER(wintypes.DWORD),  # lpReserved : DWORD* optional
    wintypes.LPWSTR,  # lpClass : LPWSTR optional, out
    ctypes.POINTER(wintypes.DWORD),  # lpcchClass : DWORD* optional, in/out
    ctypes.c_void_p,  # lpftLastWriteTime : FILETIME* optional, out
]

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('ADVAPI32.dll')
RegEnumKeyExW = Fiddle::Function.new(
  lib['RegEnumKeyExW'],
  [
    Fiddle::TYPE_VOIDP,  # hKey : HKEY
    -Fiddle::TYPE_INT,  # dwIndex : DWORD
    Fiddle::TYPE_VOIDP,  # lpName : LPWSTR optional, out
    Fiddle::TYPE_VOIDP,  # lpcchName : DWORD* in/out
    Fiddle::TYPE_VOIDP,  # lpReserved : DWORD* optional
    Fiddle::TYPE_VOIDP,  # lpClass : LPWSTR optional, out
    Fiddle::TYPE_VOIDP,  # lpcchClass : DWORD* optional, in/out
    Fiddle::TYPE_VOIDP,  # lpftLastWriteTime : FILETIME* optional, out
  ],
  -Fiddle::TYPE_INT)
# Wide strings: pass str.encode("UTF-16LE") + "\x00\x00"

#[link(name = "advapi32")]
extern "system" {
    fn RegEnumKeyExW(
        hKey: *mut core::ffi::c_void,  // HKEY
        dwIndex: u32,  // DWORD
        lpName: *mut u16,  // LPWSTR optional, out
        lpcchName: *mut u32,  // DWORD* in/out
        lpReserved: *mut u32,  // DWORD* optional
        lpClass: *mut u16,  // LPWSTR optional, out
        lpcchClass: *mut u32,  // DWORD* optional, in/out
        lpftLastWriteTime: *mut FILETIME  // FILETIME* optional, out
    ) -> u32;
}
// crates: windows-sys provides ready-made bindings for this API.

$sig = @"
[DllImport("ADVAPI32.dll", CharSet = CharSet.Unicode)]
public static extern uint RegEnumKeyExW(IntPtr hKey, uint dwIndex, [MarshalAs(UnmanagedType.LPWStr)] System.Text.StringBuilder lpName, ref uint lpcchName, IntPtr lpReserved, [MarshalAs(UnmanagedType.LPWStr)] System.Text.StringBuilder lpClass, IntPtr lpcchClass, IntPtr lpftLastWriteTime);
"@
$api = Add-Type -MemberDefinition $sig -Name 'ADVAPI32_RegEnumKeyExW' -Namespace Win32 -PassThru
# $api::RegEnumKeyExW(hKey, dwIndex, lpName, lpcchName, lpReserved, lpClass, lpcchClass, lpftLastWriteTime)

#uselib "ADVAPI32.dll"
#func global RegEnumKeyExW "RegEnumKeyExW" wptr, wptr, wptr, wptr, wptr, wptr, wptr, wptr
; RegEnumKeyExW hKey, dwIndex, varptr(lpName), varptr(lpcchName), varptr(lpReserved), varptr(lpClass), varptr(lpcchClass), varptr(lpftLastWriteTime)   ; 戻り値は stat
; hKey : HKEY -> "wptr"
; dwIndex : DWORD -> "wptr"
; lpName : LPWSTR optional, out -> "wptr"
; lpcchName : DWORD* in/out -> "wptr"
; lpReserved : DWORD* optional -> "wptr"
; lpClass : LPWSTR optional, out -> "wptr"
; lpcchClass : DWORD* optional, in/out -> "wptr"
; lpftLastWriteTime : FILETIME* optional, 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 RegEnumKeyExW "RegEnumKeyExW" sptr, int, var, var, var, var, var, var
; res = RegEnumKeyExW(hKey, dwIndex, lpName, lpcchName, lpReserved, lpClass, lpcchClass, lpftLastWriteTime)
; hKey : HKEY -> "sptr"
; dwIndex : DWORD -> "int"
; lpName : LPWSTR optional, out -> "var"
; lpcchName : DWORD* in/out -> "var"
; lpReserved : DWORD* optional -> "var"
; lpClass : LPWSTR optional, out -> "var"
; lpcchClass : DWORD* optional, in/out -> "var"
; lpftLastWriteTime : FILETIME* optional, 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 RegEnumKeyExW "RegEnumKeyExW" sptr, int, sptr, sptr, sptr, sptr, sptr, sptr
; res = RegEnumKeyExW(hKey, dwIndex, varptr(lpName), varptr(lpcchName), varptr(lpReserved), varptr(lpClass), varptr(lpcchClass), varptr(lpftLastWriteTime))
; hKey : HKEY -> "sptr"
; dwIndex : DWORD -> "int"
; lpName : LPWSTR optional, out -> "sptr"
; lpcchName : DWORD* in/out -> "sptr"
; lpReserved : DWORD* optional -> "sptr"
; lpClass : LPWSTR optional, out -> "sptr"
; lpcchClass : DWORD* optional, in/out -> "sptr"
; lpftLastWriteTime : FILETIME* optional, 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:

; WIN32_ERROR RegEnumKeyExW(HKEY hKey, DWORD dwIndex, LPWSTR lpName, DWORD* lpcchName, DWORD* lpReserved, LPWSTR lpClass, DWORD* lpcchClass, FILETIME* lpftLastWriteTime)
#uselib "ADVAPI32.dll"
#cfunc global RegEnumKeyExW "RegEnumKeyExW" intptr, int, var, var, var, var, var, var
; res = RegEnumKeyExW(hKey, dwIndex, lpName, lpcchName, lpReserved, lpClass, lpcchClass, lpftLastWriteTime)
; hKey : HKEY -> "intptr"
; dwIndex : DWORD -> "int"
; lpName : LPWSTR optional, out -> "var"
; lpcchName : DWORD* in/out -> "var"
; lpReserved : DWORD* optional -> "var"
; lpClass : LPWSTR optional, out -> "var"
; lpcchClass : DWORD* optional, in/out -> "var"
; lpftLastWriteTime : FILETIME* optional, 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。; WIN32_ERROR RegEnumKeyExW(HKEY hKey, DWORD dwIndex, LPWSTR lpName, DWORD* lpcchName, DWORD* lpReserved, LPWSTR lpClass, DWORD* lpcchClass, FILETIME* lpftLastWriteTime)
#uselib "ADVAPI32.dll"
#cfunc global RegEnumKeyExW "RegEnumKeyExW" intptr, int, intptr, intptr, intptr, intptr, intptr, intptr
; res = RegEnumKeyExW(hKey, dwIndex, varptr(lpName), varptr(lpcchName), varptr(lpReserved), varptr(lpClass), varptr(lpcchClass), varptr(lpftLastWriteTime))
; hKey : HKEY -> "intptr"
; dwIndex : DWORD -> "int"
; lpName : LPWSTR optional, out -> "intptr"
; lpcchName : DWORD* in/out -> "intptr"
; lpReserved : DWORD* optional -> "intptr"
; lpClass : LPWSTR optional, out -> "intptr"
; lpcchClass : DWORD* optional, in/out -> "intptr"
; lpftLastWriteTime : FILETIME* optional, 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")
	procRegEnumKeyExW = advapi32.NewProc("RegEnumKeyExW")
)

// hKey (HKEY), dwIndex (DWORD), lpName (LPWSTR optional, out), lpcchName (DWORD* in/out), lpReserved (DWORD* optional), lpClass (LPWSTR optional, out), lpcchClass (DWORD* optional, in/out), lpftLastWriteTime (FILETIME* optional, out)
r1, _, err := procRegEnumKeyExW.Call(
	uintptr(hKey),
	uintptr(dwIndex),
	uintptr(lpName),
	uintptr(lpcchName),
	uintptr(lpReserved),
	uintptr(lpClass),
	uintptr(lpcchClass),
	uintptr(lpftLastWriteTime),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // WIN32_ERROR

function RegEnumKeyExW(
  hKey: THandle;   // HKEY
  dwIndex: DWORD;   // DWORD
  lpName: PWideChar;   // LPWSTR optional, out
  lpcchName: Pointer;   // DWORD* in/out
  lpReserved: Pointer;   // DWORD* optional
  lpClass: PWideChar;   // LPWSTR optional, out
  lpcchClass: Pointer;   // DWORD* optional, in/out
  lpftLastWriteTime: Pointer   // FILETIME* optional, out
): DWORD; stdcall;
  external 'ADVAPI32.dll' name 'RegEnumKeyExW';

result := DllCall("ADVAPI32\RegEnumKeyExW"
    , "Ptr", hKey   ; HKEY
    , "UInt", dwIndex   ; DWORD
    , "Ptr", lpName   ; LPWSTR optional, out
    , "Ptr", lpcchName   ; DWORD* in/out
    , "Ptr", lpReserved   ; DWORD* optional
    , "Ptr", lpClass   ; LPWSTR optional, out
    , "Ptr", lpcchClass   ; DWORD* optional, in/out
    , "Ptr", lpftLastWriteTime   ; FILETIME* optional, out
    , "UInt")   ; return: WIN32_ERROR

●RegEnumKeyExW(hKey, dwIndex, lpName, lpcchName, lpReserved, lpClass, lpcchClass, lpftLastWriteTime) = DLL("ADVAPI32.dll", "dword RegEnumKeyExW(void*, dword, char*, void*, void*, char*, void*, void*)")
# 呼び出し: RegEnumKeyExW(hKey, dwIndex, lpName, lpcchName, lpReserved, lpClass, lpcchClass, lpftLastWriteTime)
# hKey : HKEY -> "void*"
# dwIndex : DWORD -> "dword"
# lpName : LPWSTR optional, out -> "char*"
# lpcchName : DWORD* in/out -> "void*"
# lpReserved : DWORD* optional -> "void*"
# lpClass : LPWSTR optional, out -> "char*"
# lpcchClass : DWORD* optional, in/out -> "void*"
# lpftLastWriteTime : FILETIME* optional, 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。