SHRegGetValueW

関数

フラグ指定付きでレジストリの値を取得し型変換も行う。

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

シグネチャ

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

WIN32_ERROR SHRegGetValueW(
    HKEY hkey,
    LPCWSTR pszSubKey,   // optional
    LPCWSTR pszValue,   // optional
    INT srrfFlags,
    DWORD* pdwType,   // optional
    void* pvData,   // optional
    DWORD* pcbData   // optional
);

パラメーター

名前	型	方向
hkey	HKEY	in
pszSubKey	LPCWSTR	inoptional
pszValue	LPCWSTR	inoptional
srrfFlags	INT	in
pdwType	DWORD*	outoptional
pvData	void*	outoptional
pcbData	DWORD*	inoutoptional

戻り値の型: WIN32_ERROR

各言語での呼び出し定義

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

WIN32_ERROR SHRegGetValueW(
    HKEY hkey,
    LPCWSTR pszSubKey,   // optional
    LPCWSTR pszValue,   // optional
    INT srrfFlags,
    DWORD* pdwType,   // optional
    void* pvData,   // optional
    DWORD* pcbData   // optional
);

[DllImport("SHLWAPI.dll", CharSet = CharSet.Unicode, ExactSpelling = true)]
static extern uint SHRegGetValueW(
    IntPtr hkey,   // HKEY
    [MarshalAs(UnmanagedType.LPWStr)] string pszSubKey,   // LPCWSTR optional
    [MarshalAs(UnmanagedType.LPWStr)] string pszValue,   // LPCWSTR optional
    int srrfFlags,   // INT
    IntPtr pdwType,   // DWORD* optional, out
    IntPtr pvData,   // void* optional, out
    IntPtr pcbData   // DWORD* optional, in/out
);

<DllImport("SHLWAPI.dll", CharSet:=CharSet.Unicode, ExactSpelling:=True)>
Public Shared Function SHRegGetValueW(
    hkey As IntPtr,   ' HKEY
    <MarshalAs(UnmanagedType.LPWStr)> pszSubKey As String,   ' LPCWSTR optional
    <MarshalAs(UnmanagedType.LPWStr)> pszValue As String,   ' LPCWSTR optional
    srrfFlags As Integer,   ' INT
    pdwType As IntPtr,   ' DWORD* optional, out
    pvData As IntPtr,   ' void* optional, out
    pcbData As IntPtr   ' DWORD* optional, in/out
) As UInteger
End Function

' hkey : HKEY
' pszSubKey : LPCWSTR optional
' pszValue : LPCWSTR optional
' srrfFlags : INT
' pdwType : DWORD* optional, out
' pvData : void* optional, out
' pcbData : DWORD* optional, in/out
Declare PtrSafe Function SHRegGetValueW Lib "shlwapi" ( _
    ByVal hkey As LongPtr, _
    ByVal pszSubKey As LongPtr, _
    ByVal pszValue As LongPtr, _
    ByVal srrfFlags As Long, _
    ByVal pdwType As LongPtr, _
    ByVal pvData As LongPtr, _
    ByVal pcbData 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

SHRegGetValueW = ctypes.windll.shlwapi.SHRegGetValueW
SHRegGetValueW.restype = wintypes.DWORD
SHRegGetValueW.argtypes = [
    wintypes.HANDLE,  # hkey : HKEY
    wintypes.LPCWSTR,  # pszSubKey : LPCWSTR optional
    wintypes.LPCWSTR,  # pszValue : LPCWSTR optional
    ctypes.c_int,  # srrfFlags : INT
    ctypes.POINTER(wintypes.DWORD),  # pdwType : DWORD* optional, out
    ctypes.POINTER(None),  # pvData : void* optional, out
    ctypes.POINTER(wintypes.DWORD),  # pcbData : DWORD* optional, in/out
]

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('SHLWAPI.dll')
SHRegGetValueW = Fiddle::Function.new(
  lib['SHRegGetValueW'],
  [
    Fiddle::TYPE_VOIDP,  # hkey : HKEY
    Fiddle::TYPE_VOIDP,  # pszSubKey : LPCWSTR optional
    Fiddle::TYPE_VOIDP,  # pszValue : LPCWSTR optional
    Fiddle::TYPE_INT,  # srrfFlags : INT
    Fiddle::TYPE_VOIDP,  # pdwType : DWORD* optional, out
    Fiddle::TYPE_VOIDP,  # pvData : void* optional, out
    Fiddle::TYPE_VOIDP,  # pcbData : DWORD* optional, in/out
  ],
  -Fiddle::TYPE_INT)
# Wide strings: pass str.encode("UTF-16LE") + "\x00\x00"

#[link(name = "shlwapi")]
extern "system" {
    fn SHRegGetValueW(
        hkey: *mut core::ffi::c_void,  // HKEY
        pszSubKey: *const u16,  // LPCWSTR optional
        pszValue: *const u16,  // LPCWSTR optional
        srrfFlags: i32,  // INT
        pdwType: *mut u32,  // DWORD* optional, out
        pvData: *mut (),  // void* optional, out
        pcbData: *mut u32  // DWORD* optional, in/out
    ) -> u32;
}
// crates: windows-sys provides ready-made bindings for this API.

$sig = @"
[DllImport("SHLWAPI.dll", CharSet = CharSet.Unicode)]
public static extern uint SHRegGetValueW(IntPtr hkey, [MarshalAs(UnmanagedType.LPWStr)] string pszSubKey, [MarshalAs(UnmanagedType.LPWStr)] string pszValue, int srrfFlags, IntPtr pdwType, IntPtr pvData, IntPtr pcbData);
"@
$api = Add-Type -MemberDefinition $sig -Name 'SHLWAPI_SHRegGetValueW' -Namespace Win32 -PassThru
# $api::SHRegGetValueW(hkey, pszSubKey, pszValue, srrfFlags, pdwType, pvData, pcbData)

#uselib "SHLWAPI.dll"
#func global SHRegGetValueW "SHRegGetValueW" wptr, wptr, wptr, wptr, wptr, wptr, wptr
; SHRegGetValueW hkey, pszSubKey, pszValue, srrfFlags, varptr(pdwType), pvData, varptr(pcbData)   ; 戻り値は stat
; hkey : HKEY -> "wptr"
; pszSubKey : LPCWSTR optional -> "wptr"
; pszValue : LPCWSTR optional -> "wptr"
; srrfFlags : INT -> "wptr"
; pdwType : DWORD* optional, out -> "wptr"
; pvData : void* optional, out -> "wptr"
; pcbData : DWORD* optional, in/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 "SHLWAPI.dll"
#cfunc global SHRegGetValueW "SHRegGetValueW" sptr, wstr, wstr, int, var, sptr, var
; res = SHRegGetValueW(hkey, pszSubKey, pszValue, srrfFlags, pdwType, pvData, pcbData)
; hkey : HKEY -> "sptr"
; pszSubKey : LPCWSTR optional -> "wstr"
; pszValue : LPCWSTR optional -> "wstr"
; srrfFlags : INT -> "int"
; pdwType : DWORD* optional, out -> "var"
; pvData : void* optional, out -> "sptr"
; pcbData : DWORD* optional, in/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 "SHLWAPI.dll"
#cfunc global SHRegGetValueW "SHRegGetValueW" sptr, wstr, wstr, int, sptr, sptr, sptr
; res = SHRegGetValueW(hkey, pszSubKey, pszValue, srrfFlags, varptr(pdwType), pvData, varptr(pcbData))
; hkey : HKEY -> "sptr"
; pszSubKey : LPCWSTR optional -> "wstr"
; pszValue : LPCWSTR optional -> "wstr"
; srrfFlags : INT -> "int"
; pdwType : DWORD* optional, out -> "sptr"
; pvData : void* optional, out -> "sptr"
; pcbData : DWORD* optional, in/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 SHRegGetValueW(HKEY hkey, LPCWSTR pszSubKey, LPCWSTR pszValue, INT srrfFlags, DWORD* pdwType, void* pvData, DWORD* pcbData)
#uselib "SHLWAPI.dll"
#cfunc global SHRegGetValueW "SHRegGetValueW" intptr, wstr, wstr, int, var, intptr, var
; res = SHRegGetValueW(hkey, pszSubKey, pszValue, srrfFlags, pdwType, pvData, pcbData)
; hkey : HKEY -> "intptr"
; pszSubKey : LPCWSTR optional -> "wstr"
; pszValue : LPCWSTR optional -> "wstr"
; srrfFlags : INT -> "int"
; pdwType : DWORD* optional, out -> "var"
; pvData : void* optional, out -> "intptr"
; pcbData : DWORD* optional, in/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 SHRegGetValueW(HKEY hkey, LPCWSTR pszSubKey, LPCWSTR pszValue, INT srrfFlags, DWORD* pdwType, void* pvData, DWORD* pcbData)
#uselib "SHLWAPI.dll"
#cfunc global SHRegGetValueW "SHRegGetValueW" intptr, wstr, wstr, int, intptr, intptr, intptr
; res = SHRegGetValueW(hkey, pszSubKey, pszValue, srrfFlags, varptr(pdwType), pvData, varptr(pcbData))
; hkey : HKEY -> "intptr"
; pszSubKey : LPCWSTR optional -> "wstr"
; pszValue : LPCWSTR optional -> "wstr"
; srrfFlags : INT -> "int"
; pdwType : DWORD* optional, out -> "intptr"
; pvData : void* optional, out -> "intptr"
; pcbData : DWORD* optional, in/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 (
	shlwapi = windows.NewLazySystemDLL("SHLWAPI.dll")
	procSHRegGetValueW = shlwapi.NewProc("SHRegGetValueW")
)

// hkey (HKEY), pszSubKey (LPCWSTR optional), pszValue (LPCWSTR optional), srrfFlags (INT), pdwType (DWORD* optional, out), pvData (void* optional, out), pcbData (DWORD* optional, in/out)
r1, _, err := procSHRegGetValueW.Call(
	uintptr(hkey),
	uintptr(unsafe.Pointer(windows.StringToUTF16Ptr(pszSubKey))),
	uintptr(unsafe.Pointer(windows.StringToUTF16Ptr(pszValue))),
	uintptr(srrfFlags),
	uintptr(pdwType),
	uintptr(pvData),
	uintptr(pcbData),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // WIN32_ERROR

function SHRegGetValueW(
  hkey: THandle;   // HKEY
  pszSubKey: PWideChar;   // LPCWSTR optional
  pszValue: PWideChar;   // LPCWSTR optional
  srrfFlags: Integer;   // INT
  pdwType: Pointer;   // DWORD* optional, out
  pvData: Pointer;   // void* optional, out
  pcbData: Pointer   // DWORD* optional, in/out
): DWORD; stdcall;
  external 'SHLWAPI.dll' name 'SHRegGetValueW';

result := DllCall("SHLWAPI\SHRegGetValueW"
    , "Ptr", hkey   ; HKEY
    , "WStr", pszSubKey   ; LPCWSTR optional
    , "WStr", pszValue   ; LPCWSTR optional
    , "Int", srrfFlags   ; INT
    , "Ptr", pdwType   ; DWORD* optional, out
    , "Ptr", pvData   ; void* optional, out
    , "Ptr", pcbData   ; DWORD* optional, in/out
    , "UInt")   ; return: WIN32_ERROR

●SHRegGetValueW(hkey, pszSubKey, pszValue, srrfFlags, pdwType, pvData, pcbData) = DLL("SHLWAPI.dll", "dword SHRegGetValueW(void*, char*, char*, int, void*, void*, void*)")
# 呼び出し: SHRegGetValueW(hkey, pszSubKey, pszValue, srrfFlags, pdwType, pvData, pcbData)
# hkey : HKEY -> "void*"
# pszSubKey : LPCWSTR optional -> "char*"
# pszValue : LPCWSTR optional -> "char*"
# srrfFlags : INT -> "int"
# pdwType : DWORD* optional, out -> "void*"
# pvData : void* optional, out -> "void*"
# pcbData : DWORD* optional, in/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。