ResUtilGetSzValue

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

LPWSTR ResUtilGetSzValue(
    HKEY hkeyClusterKey,
    LPCWSTR pszValueName
);

<DllImport("RESUTILS.dll", SetLastError:=True, ExactSpelling:=True)>
Public Shared Function ResUtilGetSzValue(
    hkeyClusterKey As IntPtr,   ' HKEY
    <MarshalAs(UnmanagedType.LPWStr)> pszValueName As String   ' LPCWSTR
) As IntPtr
End Function

' hkeyClusterKey : HKEY
' pszValueName : LPCWSTR
Declare PtrSafe Function ResUtilGetSzValue Lib "resutils" ( _
    ByVal hkeyClusterKey As LongPtr, _
    ByVal pszValueName As LongPtr) As LongPtr
' VBA7前提(PtrSafe)。32bit Office では LongPtr→Long。Integer=16bit / Long=32bit / LongLong=64bit。

import ctypes
from ctypes import wintypes

ResUtilGetSzValue = ctypes.windll.resutils.ResUtilGetSzValue
ResUtilGetSzValue.restype = wintypes.LPWSTR
ResUtilGetSzValue.argtypes = [
    wintypes.HANDLE,  # hkeyClusterKey : HKEY
    wintypes.LPCWSTR,  # pszValueName : LPCWSTR
]
# GetLastError: use ctypes.GetLastError() (or ctypes.WinDLL(use_last_error=True))

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('RESUTILS.dll')
ResUtilGetSzValue = Fiddle::Function.new(
  lib['ResUtilGetSzValue'],
  [
    Fiddle::TYPE_VOIDP,  # hkeyClusterKey : HKEY
    Fiddle::TYPE_VOIDP,  # pszValueName : LPCWSTR
  ],
  Fiddle::TYPE_VOIDP)

#[link(name = "resutils")]
extern "system" {
    fn ResUtilGetSzValue(
        hkeyClusterKey: *mut core::ffi::c_void,  // HKEY
        pszValueName: *const u16  // LPCWSTR
    ) -> *mut u16;
}
// crates: windows-sys provides ready-made bindings for this API.

$sig = @"
[DllImport("RESUTILS.dll", SetLastError = true)]
public static extern IntPtr ResUtilGetSzValue(IntPtr hkeyClusterKey, [MarshalAs(UnmanagedType.LPWStr)] string pszValueName);
"@
$api = Add-Type -MemberDefinition $sig -Name 'RESUTILS_ResUtilGetSzValue' -Namespace Win32 -PassThru
# $api::ResUtilGetSzValue(hkeyClusterKey, pszValueName)

#uselib "RESUTILS.dll"
#func global ResUtilGetSzValue "ResUtilGetSzValue" sptr, sptr
; ResUtilGetSzValue hkeyClusterKey, pszValueName   ; 戻り値は stat
; hkeyClusterKey : HKEY -> "sptr"
; pszValueName : LPCWSTR -> "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 ResUtilGetSzValue "ResUtilGetSzValue" sptr, wstr
; res = ResUtilGetSzValue(hkeyClusterKey, pszValueName)
; hkeyClusterKey : HKEY -> "sptr"
; pszValueName : LPCWSTR -> "wstr"

; LPWSTR ResUtilGetSzValue(HKEY hkeyClusterKey, LPCWSTR pszValueName)
#uselib "RESUTILS.dll"
#cfunc global ResUtilGetSzValue "ResUtilGetSzValue" intptr, wstr
; res = ResUtilGetSzValue(hkeyClusterKey, pszValueName)
; hkeyClusterKey : HKEY -> "intptr"
; pszValueName : LPCWSTR -> "wstr"

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

var (
	resutils = windows.NewLazySystemDLL("RESUTILS.dll")
	procResUtilGetSzValue = resutils.NewProc("ResUtilGetSzValue")
)

// hkeyClusterKey (HKEY), pszValueName (LPCWSTR)
r1, _, err := procResUtilGetSzValue.Call(
	uintptr(hkeyClusterKey),
	uintptr(unsafe.Pointer(windows.StringToUTF16Ptr(pszValueName))),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // LPWSTR

function ResUtilGetSzValue(
  hkeyClusterKey: THandle;   // HKEY
  pszValueName: PWideChar   // LPCWSTR
): PWideChar; stdcall;
  external 'RESUTILS.dll' name 'ResUtilGetSzValue';

result := DllCall("RESUTILS\ResUtilGetSzValue"
    , "Ptr", hkeyClusterKey   ; HKEY
    , "WStr", pszValueName   ; LPCWSTR
    , "Ptr")   ; return: LPWSTR

●ResUtilGetSzValue(hkeyClusterKey, pszValueName) = DLL("RESUTILS.dll", "char* ResUtilGetSzValue(void*, char*)")
# 呼び出し: ResUtilGetSzValue(hkeyClusterKey, pszValueName)
# hkeyClusterKey : HKEY -> "void*"
# pszValueName : LPCWSTR -> "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)。