ResUtilSetValueEx

// RESUTILS.dll
#include <windows.h>

DWORD ResUtilSetValueEx(
    HKEY hkeyClusterKey,
    LPCWSTR valueName,
    DWORD valueType,
    const BYTE* valueData,
    DWORD valueSize,
    DWORD flags
);

<DllImport("RESUTILS.dll", ExactSpelling:=True)>
Public Shared Function ResUtilSetValueEx(
    hkeyClusterKey As IntPtr,   ' HKEY
    <MarshalAs(UnmanagedType.LPWStr)> valueName As String,   ' LPCWSTR
    valueType As UInteger,   ' DWORD
    valueData As IntPtr,   ' BYTE*
    valueSize As UInteger,   ' DWORD
    flags As UInteger   ' DWORD
) As UInteger
End Function

' hkeyClusterKey : HKEY
' valueName : LPCWSTR
' valueType : DWORD
' valueData : BYTE*
' valueSize : DWORD
' flags : DWORD
Declare PtrSafe Function ResUtilSetValueEx Lib "resutils" ( _
    ByVal hkeyClusterKey As LongPtr, _
    ByVal valueName As LongPtr, _
    ByVal valueType As Long, _
    ByVal valueData As LongPtr, _
    ByVal valueSize As Long, _
    ByVal flags As Long) As Long
' VBA7前提(PtrSafe)。32bit Office では LongPtr→Long。Integer=16bit / Long=32bit / LongLong=64bit。

import ctypes
from ctypes import wintypes

ResUtilSetValueEx = ctypes.windll.resutils.ResUtilSetValueEx
ResUtilSetValueEx.restype = wintypes.DWORD
ResUtilSetValueEx.argtypes = [
    wintypes.HANDLE,  # hkeyClusterKey : HKEY
    wintypes.LPCWSTR,  # valueName : LPCWSTR
    wintypes.DWORD,  # valueType : DWORD
    ctypes.POINTER(ctypes.c_ubyte),  # valueData : BYTE*
    wintypes.DWORD,  # valueSize : DWORD
    wintypes.DWORD,  # flags : DWORD
]

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('RESUTILS.dll')
ResUtilSetValueEx = Fiddle::Function.new(
  lib['ResUtilSetValueEx'],
  [
    Fiddle::TYPE_VOIDP,  # hkeyClusterKey : HKEY
    Fiddle::TYPE_VOIDP,  # valueName : LPCWSTR
    -Fiddle::TYPE_INT,  # valueType : DWORD
    Fiddle::TYPE_VOIDP,  # valueData : BYTE*
    -Fiddle::TYPE_INT,  # valueSize : DWORD
    -Fiddle::TYPE_INT,  # flags : DWORD
  ],
  -Fiddle::TYPE_INT)

#[link(name = "resutils")]
extern "system" {
    fn ResUtilSetValueEx(
        hkeyClusterKey: *mut core::ffi::c_void,  // HKEY
        valueName: *const u16,  // LPCWSTR
        valueType: u32,  // DWORD
        valueData: *const u8,  // BYTE*
        valueSize: u32,  // DWORD
        flags: u32  // DWORD
    ) -> u32;
}
// crates: windows-sys provides ready-made bindings for this API.

$sig = @"
[DllImport("RESUTILS.dll")]
public static extern uint ResUtilSetValueEx(IntPtr hkeyClusterKey, [MarshalAs(UnmanagedType.LPWStr)] string valueName, uint valueType, IntPtr valueData, uint valueSize, uint flags);
"@
$api = Add-Type -MemberDefinition $sig -Name 'RESUTILS_ResUtilSetValueEx' -Namespace Win32 -PassThru
# $api::ResUtilSetValueEx(hkeyClusterKey, valueName, valueType, valueData, valueSize, flags)

#uselib "RESUTILS.dll"
#func global ResUtilSetValueEx "ResUtilSetValueEx" sptr, sptr, sptr, sptr, sptr, sptr
; ResUtilSetValueEx hkeyClusterKey, valueName, valueType, varptr(valueData), valueSize, flags   ; 戻り値は stat
; hkeyClusterKey : HKEY -> "sptr"
; valueName : LPCWSTR -> "sptr"
; valueType : DWORD -> "sptr"
; valueData : BYTE* -> "sptr"
; valueSize : DWORD -> "sptr"
; flags : DWORD -> "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 "RESUTILS.dll"
#cfunc global ResUtilSetValueEx "ResUtilSetValueEx" sptr, wstr, int, var, int, int
; res = ResUtilSetValueEx(hkeyClusterKey, valueName, valueType, valueData, valueSize, flags)
; hkeyClusterKey : HKEY -> "sptr"
; valueName : LPCWSTR -> "wstr"
; valueType : DWORD -> "int"
; valueData : BYTE* -> "var"
; valueSize : DWORD -> "int"
; flags : DWORD -> "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。

; DWORD ResUtilSetValueEx(HKEY hkeyClusterKey, LPCWSTR valueName, DWORD valueType, BYTE* valueData, DWORD valueSize, DWORD flags)
#uselib "RESUTILS.dll"
#cfunc global ResUtilSetValueEx "ResUtilSetValueEx" intptr, wstr, int, var, int, int
; res = ResUtilSetValueEx(hkeyClusterKey, valueName, valueType, valueData, valueSize, flags)
; hkeyClusterKey : HKEY -> "intptr"
; valueName : LPCWSTR -> "wstr"
; valueType : DWORD -> "int"
; valueData : BYTE* -> "var"
; valueSize : DWORD -> "int"
; flags : DWORD -> "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 (
	resutils = windows.NewLazySystemDLL("RESUTILS.dll")
	procResUtilSetValueEx = resutils.NewProc("ResUtilSetValueEx")
)

// hkeyClusterKey (HKEY), valueName (LPCWSTR), valueType (DWORD), valueData (BYTE*), valueSize (DWORD), flags (DWORD)
r1, _, err := procResUtilSetValueEx.Call(
	uintptr(hkeyClusterKey),
	uintptr(unsafe.Pointer(windows.StringToUTF16Ptr(valueName))),
	uintptr(valueType),
	uintptr(valueData),
	uintptr(valueSize),
	uintptr(flags),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // DWORD

function ResUtilSetValueEx(
  hkeyClusterKey: THandle;   // HKEY
  valueName: PWideChar;   // LPCWSTR
  valueType: DWORD;   // DWORD
  valueData: Pointer;   // BYTE*
  valueSize: DWORD;   // DWORD
  flags: DWORD   // DWORD
): DWORD; stdcall;
  external 'RESUTILS.dll' name 'ResUtilSetValueEx';

result := DllCall("RESUTILS\ResUtilSetValueEx"
    , "Ptr", hkeyClusterKey   ; HKEY
    , "WStr", valueName   ; LPCWSTR
    , "UInt", valueType   ; DWORD
    , "Ptr", valueData   ; BYTE*
    , "UInt", valueSize   ; DWORD
    , "UInt", flags   ; DWORD
    , "UInt")   ; return: DWORD

●ResUtilSetValueEx(hkeyClusterKey, valueName, valueType, valueData, valueSize, flags) = DLL("RESUTILS.dll", "dword ResUtilSetValueEx(void*, char*, dword, void*, dword, dword)")
# 呼び出し: ResUtilSetValueEx(hkeyClusterKey, valueName, valueType, valueData, valueSize, flags)
# hkeyClusterKey : HKEY -> "void*"
# valueName : LPCWSTR -> "char*"
# valueType : DWORD -> "dword"
# valueData : BYTE* -> "void*"
# valueSize : DWORD -> "dword"
# flags : DWORD -> "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)。