StrToIntExW

// SHLWAPI.dll  (Unicode / -W)
#include <windows.h>

BOOL StrToIntExW(
    LPCWSTR pszString,
    INT dwFlags,
    INT* piRet
);

<DllImport("SHLWAPI.dll", CharSet:=CharSet.Unicode, ExactSpelling:=True)>
Public Shared Function StrToIntExW(
    <MarshalAs(UnmanagedType.LPWStr)> pszString As String,   ' LPCWSTR
    dwFlags As Integer,   ' INT
    <Out> ByRef piRet As Integer   ' INT* out
) As Boolean
End Function

' pszString : LPCWSTR
' dwFlags : INT
' piRet : INT* out
Declare PtrSafe Function StrToIntExW Lib "shlwapi" ( _
    ByVal pszString As LongPtr, _
    ByVal dwFlags As Long, _
    ByRef piRet As Long) As Long
' Unicode(W): 文字列は ByVal As LongPtr とし StrPtr(unicodeStr) を渡す
' VBA7前提(PtrSafe)。32bit Office では LongPtr→Long。Integer=16bit / Long=32bit / LongLong=64bit。

import ctypes
from ctypes import wintypes

StrToIntExW = ctypes.windll.shlwapi.StrToIntExW
StrToIntExW.restype = wintypes.BOOL
StrToIntExW.argtypes = [
    wintypes.LPCWSTR,  # pszString : LPCWSTR
    ctypes.c_int,  # dwFlags : INT
    ctypes.POINTER(ctypes.c_int),  # piRet : INT* out
]

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('SHLWAPI.dll')
StrToIntExW = Fiddle::Function.new(
  lib['StrToIntExW'],
  [
    Fiddle::TYPE_VOIDP,  # pszString : LPCWSTR
    Fiddle::TYPE_INT,  # dwFlags : INT
    Fiddle::TYPE_VOIDP,  # piRet : INT* out
  ],
  Fiddle::TYPE_INT)
# Wide strings: pass str.encode("UTF-16LE") + "\x00\x00"

#[link(name = "shlwapi")]
extern "system" {
    fn StrToIntExW(
        pszString: *const u16,  // LPCWSTR
        dwFlags: i32,  // INT
        piRet: *mut i32  // INT* out
    ) -> i32;
}
// crates: windows-sys provides ready-made bindings for this API.

$sig = @"
[return: MarshalAs(UnmanagedType.Bool)]
[DllImport("SHLWAPI.dll", CharSet = CharSet.Unicode)]
public static extern bool StrToIntExW([MarshalAs(UnmanagedType.LPWStr)] string pszString, int dwFlags, out int piRet);
"@
$api = Add-Type -MemberDefinition $sig -Name 'SHLWAPI_StrToIntExW' -Namespace Win32 -PassThru
# $api::StrToIntExW(pszString, dwFlags, piRet)

#uselib "SHLWAPI.dll"
#func global StrToIntExW "StrToIntExW" wptr, wptr, wptr
; StrToIntExW pszString, dwFlags, varptr(piRet)   ; 戻り値は stat
; pszString : LPCWSTR -> "wptr"
; dwFlags : INT -> "wptr"
; piRet : INT* out -> "wptr"
; ※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 StrToIntExW "StrToIntExW" wstr, int, var
; res = StrToIntExW(pszString, dwFlags, piRet)
; pszString : LPCWSTR -> "wstr"
; dwFlags : INT -> "int"
; piRet : INT* out -> "var"
; ※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。

; BOOL StrToIntExW(LPCWSTR pszString, INT dwFlags, INT* piRet)
#uselib "SHLWAPI.dll"
#cfunc global StrToIntExW "StrToIntExW" wstr, int, var
; res = StrToIntExW(pszString, dwFlags, piRet)
; pszString : LPCWSTR -> "wstr"
; dwFlags : INT -> "int"
; piRet : INT* out -> "var"
; ※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 (
	shlwapi = windows.NewLazySystemDLL("SHLWAPI.dll")
	procStrToIntExW = shlwapi.NewProc("StrToIntExW")
)

// pszString (LPCWSTR), dwFlags (INT), piRet (INT* out)
r1, _, err := procStrToIntExW.Call(
	uintptr(unsafe.Pointer(windows.StringToUTF16Ptr(pszString))),
	uintptr(dwFlags),
	uintptr(piRet),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // BOOL

function StrToIntExW(
  pszString: PWideChar;   // LPCWSTR
  dwFlags: Integer;   // INT
  piRet: Pointer   // INT* out
): BOOL; stdcall;
  external 'SHLWAPI.dll' name 'StrToIntExW';

result := DllCall("SHLWAPI\StrToIntExW"
    , "WStr", pszString   ; LPCWSTR
    , "Int", dwFlags   ; INT
    , "Ptr", piRet   ; INT* out
    , "Int")   ; return: BOOL

●StrToIntExW(pszString, dwFlags, piRet) = DLL("SHLWAPI.dll", "bool StrToIntExW(char*, int, void*)")
# 呼び出し: StrToIntExW(pszString, dwFlags, piRet)
# pszString : LPCWSTR -> "char*"
# dwFlags : INT -> "int"
# piRet : INT* out -> "void*"
# 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)。
# ※-W(Unicode)関数。なでしこ1はANSIのため -A 版の利用を推奨。