SysReAllocString

// OLEAUT32.dll
#include <windows.h>

INT SysReAllocString(
    LPWSTR* pbstr,
    LPCWSTR psz   // optional
);

<DllImport("OLEAUT32.dll", ExactSpelling:=True)>
Public Shared Function SysReAllocString(
    pbstr As IntPtr,   ' LPWSTR* in/out
    <MarshalAs(UnmanagedType.LPWStr)> psz As String   ' LPCWSTR optional
) As Integer
End Function

' pbstr : LPWSTR* in/out
' psz : LPCWSTR optional
Declare PtrSafe Function SysReAllocString Lib "oleaut32" ( _
    ByVal pbstr As LongPtr, _
    ByVal psz As LongPtr) As Long
' VBA7前提(PtrSafe)。32bit Office では LongPtr→Long。Integer=16bit / Long=32bit / LongLong=64bit。

import ctypes
from ctypes import wintypes

SysReAllocString = ctypes.windll.oleaut32.SysReAllocString
SysReAllocString.restype = ctypes.c_int
SysReAllocString.argtypes = [
    ctypes.c_void_p,  # pbstr : LPWSTR* in/out
    wintypes.LPCWSTR,  # psz : LPCWSTR optional
]

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('OLEAUT32.dll')
SysReAllocString = Fiddle::Function.new(
  lib['SysReAllocString'],
  [
    Fiddle::TYPE_VOIDP,  # pbstr : LPWSTR* in/out
    Fiddle::TYPE_VOIDP,  # psz : LPCWSTR optional
  ],
  Fiddle::TYPE_INT)

#[link(name = "oleaut32")]
extern "system" {
    fn SysReAllocString(
        pbstr: *mut *mut u16,  // LPWSTR* in/out
        psz: *const u16  // LPCWSTR optional
    ) -> i32;
}
// crates: windows-sys provides ready-made bindings for this API.

$sig = @"
[DllImport("OLEAUT32.dll")]
public static extern int SysReAllocString(IntPtr pbstr, [MarshalAs(UnmanagedType.LPWStr)] string psz);
"@
$api = Add-Type -MemberDefinition $sig -Name 'OLEAUT32_SysReAllocString' -Namespace Win32 -PassThru
# $api::SysReAllocString(pbstr, psz)

#uselib "OLEAUT32.dll"
#func global SysReAllocString "SysReAllocString" sptr, sptr
; SysReAllocString varptr(pbstr), psz   ; 戻り値は stat
; pbstr : LPWSTR* in/out -> "sptr"
; psz : LPCWSTR 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 "OLEAUT32.dll"
#cfunc global SysReAllocString "SysReAllocString" var, wstr
; res = SysReAllocString(pbstr, psz)
; pbstr : LPWSTR* in/out -> "var"
; psz : LPCWSTR optional -> "wstr"
; ※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。

; INT SysReAllocString(LPWSTR* pbstr, LPCWSTR psz)
#uselib "OLEAUT32.dll"
#cfunc global SysReAllocString "SysReAllocString" var, wstr
; res = SysReAllocString(pbstr, psz)
; pbstr : LPWSTR* in/out -> "var"
; psz : LPCWSTR optional -> "wstr"
; ※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 (
	oleaut32 = windows.NewLazySystemDLL("OLEAUT32.dll")
	procSysReAllocString = oleaut32.NewProc("SysReAllocString")
)

// pbstr (LPWSTR* in/out), psz (LPCWSTR optional)
r1, _, err := procSysReAllocString.Call(
	uintptr(pbstr),
	uintptr(unsafe.Pointer(windows.StringToUTF16Ptr(psz))),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // INT

function SysReAllocString(
  pbstr: PPWideChar;   // LPWSTR* in/out
  psz: PWideChar   // LPCWSTR optional
): Integer; stdcall;
  external 'OLEAUT32.dll' name 'SysReAllocString';

result := DllCall("OLEAUT32\SysReAllocString"
    , "Ptr", pbstr   ; LPWSTR* in/out
    , "WStr", psz   ; LPCWSTR optional
    , "Int")   ; return: INT

●SysReAllocString(pbstr, psz) = DLL("OLEAUT32.dll", "int SysReAllocString(void*, char*)")
# 呼び出し: SysReAllocString(pbstr, psz)
# pbstr : LPWSTR* in/out -> "void*"
# psz : LPCWSTR optional -> "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)。