SHCopyKeyA

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

WIN32_ERROR SHCopyKeyA(
    HKEY hkeySrc,
    LPCSTR pszSrcSubKey,   // optional
    HKEY hkeyDest,
    DWORD fReserved   // optional
);

<DllImport("SHLWAPI.dll", CharSet:=CharSet.Ansi, ExactSpelling:=True)>
Public Shared Function SHCopyKeyA(
    hkeySrc As IntPtr,   ' HKEY
    <MarshalAs(UnmanagedType.LPStr)> pszSrcSubKey As String,   ' LPCSTR optional
    hkeyDest As IntPtr,   ' HKEY
    fReserved As UInteger   ' DWORD optional
) As UInteger
End Function

' hkeySrc : HKEY
' pszSrcSubKey : LPCSTR optional
' hkeyDest : HKEY
' fReserved : DWORD optional
Declare PtrSafe Function SHCopyKeyA Lib "shlwapi" ( _
    ByVal hkeySrc As LongPtr, _
    ByVal pszSrcSubKey As String, _
    ByVal hkeyDest As LongPtr, _
    ByVal fReserved 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

SHCopyKeyA = ctypes.windll.shlwapi.SHCopyKeyA
SHCopyKeyA.restype = wintypes.DWORD
SHCopyKeyA.argtypes = [
    wintypes.HANDLE,  # hkeySrc : HKEY
    wintypes.LPCSTR,  # pszSrcSubKey : LPCSTR optional
    wintypes.HANDLE,  # hkeyDest : HKEY
    wintypes.DWORD,  # fReserved : DWORD optional
]

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('SHLWAPI.dll')
SHCopyKeyA = Fiddle::Function.new(
  lib['SHCopyKeyA'],
  [
    Fiddle::TYPE_VOIDP,  # hkeySrc : HKEY
    Fiddle::TYPE_VOIDP,  # pszSrcSubKey : LPCSTR optional
    Fiddle::TYPE_VOIDP,  # hkeyDest : HKEY
    -Fiddle::TYPE_INT,  # fReserved : DWORD optional
  ],
  -Fiddle::TYPE_INT)

#[link(name = "shlwapi")]
extern "system" {
    fn SHCopyKeyA(
        hkeySrc: *mut core::ffi::c_void,  // HKEY
        pszSrcSubKey: *const u8,  // LPCSTR optional
        hkeyDest: *mut core::ffi::c_void,  // HKEY
        fReserved: u32  // DWORD optional
    ) -> u32;
}
// crates: windows-sys provides ready-made bindings for this API.

$sig = @"
[DllImport("SHLWAPI.dll", CharSet = CharSet.Ansi)]
public static extern uint SHCopyKeyA(IntPtr hkeySrc, [MarshalAs(UnmanagedType.LPStr)] string pszSrcSubKey, IntPtr hkeyDest, uint fReserved);
"@
$api = Add-Type -MemberDefinition $sig -Name 'SHLWAPI_SHCopyKeyA' -Namespace Win32 -PassThru
# $api::SHCopyKeyA(hkeySrc, pszSrcSubKey, hkeyDest, fReserved)

#uselib "SHLWAPI.dll"
#func global SHCopyKeyA "SHCopyKeyA" sptr, sptr, sptr, sptr
; SHCopyKeyA hkeySrc, pszSrcSubKey, hkeyDest, fReserved   ; 戻り値は stat
; hkeySrc : HKEY -> "sptr"
; pszSrcSubKey : LPCSTR optional -> "sptr"
; hkeyDest : HKEY -> "sptr"
; fReserved : DWORD optional -> "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 "SHLWAPI.dll"
#cfunc global SHCopyKeyA "SHCopyKeyA" sptr, str, sptr, int
; res = SHCopyKeyA(hkeySrc, pszSrcSubKey, hkeyDest, fReserved)
; hkeySrc : HKEY -> "sptr"
; pszSrcSubKey : LPCSTR optional -> "str"
; hkeyDest : HKEY -> "sptr"
; fReserved : DWORD optional -> "int"

; WIN32_ERROR SHCopyKeyA(HKEY hkeySrc, LPCSTR pszSrcSubKey, HKEY hkeyDest, DWORD fReserved)
#uselib "SHLWAPI.dll"
#cfunc global SHCopyKeyA "SHCopyKeyA" intptr, str, intptr, int
; res = SHCopyKeyA(hkeySrc, pszSrcSubKey, hkeyDest, fReserved)
; hkeySrc : HKEY -> "intptr"
; pszSrcSubKey : LPCSTR optional -> "str"
; hkeyDest : HKEY -> "intptr"
; fReserved : DWORD optional -> "int"

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

var (
	shlwapi = windows.NewLazySystemDLL("SHLWAPI.dll")
	procSHCopyKeyA = shlwapi.NewProc("SHCopyKeyA")
)

// hkeySrc (HKEY), pszSrcSubKey (LPCSTR optional), hkeyDest (HKEY), fReserved (DWORD optional)
r1, _, err := procSHCopyKeyA.Call(
	uintptr(hkeySrc),
	uintptr(unsafe.Pointer(windows.BytePtrFromString(pszSrcSubKey))),
	uintptr(hkeyDest),
	uintptr(fReserved),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // WIN32_ERROR

function SHCopyKeyA(
  hkeySrc: THandle;   // HKEY
  pszSrcSubKey: PAnsiChar;   // LPCSTR optional
  hkeyDest: THandle;   // HKEY
  fReserved: DWORD   // DWORD optional
): DWORD; stdcall;
  external 'SHLWAPI.dll' name 'SHCopyKeyA';

result := DllCall("SHLWAPI\SHCopyKeyA"
    , "Ptr", hkeySrc   ; HKEY
    , "AStr", pszSrcSubKey   ; LPCSTR optional
    , "Ptr", hkeyDest   ; HKEY
    , "UInt", fReserved   ; DWORD optional
    , "UInt")   ; return: WIN32_ERROR

●SHCopyKeyA(hkeySrc, pszSrcSubKey, hkeyDest, fReserved) = DLL("SHLWAPI.dll", "dword SHCopyKeyA(void*, char*, void*, dword)")
# 呼び出し: SHCopyKeyA(hkeySrc, pszSrcSubKey, hkeyDest, fReserved)
# hkeySrc : HKEY -> "void*"
# pszSrcSubKey : LPCSTR optional -> "char*"
# hkeyDest : HKEY -> "void*"
# fReserved : DWORD optional -> "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)。