ResUtilDupString

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

LPWSTR ResUtilDupString(
    LPCWSTR pszInString
);

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

' pszInString : LPCWSTR
Declare PtrSafe Function ResUtilDupString Lib "resutils" ( _
    ByVal pszInString 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

ResUtilDupString = ctypes.windll.resutils.ResUtilDupString
ResUtilDupString.restype = wintypes.LPWSTR
ResUtilDupString.argtypes = [
    wintypes.LPCWSTR,  # pszInString : LPCWSTR
]
# GetLastError: use ctypes.GetLastError() (or ctypes.WinDLL(use_last_error=True))

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('RESUTILS.dll')
ResUtilDupString = Fiddle::Function.new(
  lib['ResUtilDupString'],
  [
    Fiddle::TYPE_VOIDP,  # pszInString : LPCWSTR
  ],
  Fiddle::TYPE_VOIDP)

#[link(name = "resutils")]
extern "system" {
    fn ResUtilDupString(
        pszInString: *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 ResUtilDupString([MarshalAs(UnmanagedType.LPWStr)] string pszInString);
"@
$api = Add-Type -MemberDefinition $sig -Name 'RESUTILS_ResUtilDupString' -Namespace Win32 -PassThru
# $api::ResUtilDupString(pszInString)

#uselib "RESUTILS.dll"
#func global ResUtilDupString "ResUtilDupString" sptr
; ResUtilDupString pszInString   ; 戻り値は stat
; pszInString : 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 ResUtilDupString "ResUtilDupString" wstr
; res = ResUtilDupString(pszInString)
; pszInString : LPCWSTR -> "wstr"

; LPWSTR ResUtilDupString(LPCWSTR pszInString)
#uselib "RESUTILS.dll"
#cfunc global ResUtilDupString "ResUtilDupString" wstr
; res = ResUtilDupString(pszInString)
; pszInString : LPCWSTR -> "wstr"

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

var (
	resutils = windows.NewLazySystemDLL("RESUTILS.dll")
	procResUtilDupString = resutils.NewProc("ResUtilDupString")
)

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

function ResUtilDupString(
  pszInString: PWideChar   // LPCWSTR
): PWideChar; stdcall;
  external 'RESUTILS.dll' name 'ResUtilDupString';

result := DllCall("RESUTILS\ResUtilDupString"
    , "WStr", pszInString   ; LPCWSTR
    , "Ptr")   ; return: LPWSTR

●ResUtilDupString(pszInString) = DLL("RESUTILS.dll", "char* ResUtilDupString(char*)")
# 呼び出し: ResUtilDupString(pszInString)
# pszInString : 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)。