IsNLSDefinedString

// KERNEL32.dll
#include <windows.h>

BOOL IsNLSDefinedString(
    DWORD Function,
    DWORD dwFlags,
    NLSVERSIONINFO* lpVersionInformation,
    LPCWSTR lpString,
    INT cchStr
);

<DllImport("KERNEL32.dll", SetLastError:=True, ExactSpelling:=True)>
Public Shared Function IsNLSDefinedString(
    [Function] As UInteger,   ' DWORD
    dwFlags As UInteger,   ' DWORD
    lpVersionInformation As IntPtr,   ' NLSVERSIONINFO*
    <MarshalAs(UnmanagedType.LPWStr)> lpString As String,   ' LPCWSTR
    cchStr As Integer   ' INT
) As Boolean
End Function

' Function : DWORD
' dwFlags : DWORD
' lpVersionInformation : NLSVERSIONINFO*
' lpString : LPCWSTR
' cchStr : INT
Declare PtrSafe Function IsNLSDefinedString Lib "kernel32" ( _
    ByVal Function As Long, _
    ByVal dwFlags As Long, _
    ByVal lpVersionInformation As LongPtr, _
    ByVal lpString As LongPtr, _
    ByVal cchStr 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

IsNLSDefinedString = ctypes.windll.kernel32.IsNLSDefinedString
IsNLSDefinedString.restype = wintypes.BOOL
IsNLSDefinedString.argtypes = [
    wintypes.DWORD,  # Function : DWORD
    wintypes.DWORD,  # dwFlags : DWORD
    ctypes.c_void_p,  # lpVersionInformation : NLSVERSIONINFO*
    wintypes.LPCWSTR,  # lpString : LPCWSTR
    ctypes.c_int,  # cchStr : INT
]
# GetLastError: use ctypes.GetLastError() (or ctypes.WinDLL(use_last_error=True))

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('KERNEL32.dll')
IsNLSDefinedString = Fiddle::Function.new(
  lib['IsNLSDefinedString'],
  [
    -Fiddle::TYPE_INT,  # Function : DWORD
    -Fiddle::TYPE_INT,  # dwFlags : DWORD
    Fiddle::TYPE_VOIDP,  # lpVersionInformation : NLSVERSIONINFO*
    Fiddle::TYPE_VOIDP,  # lpString : LPCWSTR
    Fiddle::TYPE_INT,  # cchStr : INT
  ],
  Fiddle::TYPE_INT)

#[link(name = "kernel32")]
extern "system" {
    fn IsNLSDefinedString(
        Function: u32,  // DWORD
        dwFlags: u32,  // DWORD
        lpVersionInformation: *mut NLSVERSIONINFO,  // NLSVERSIONINFO*
        lpString: *const u16,  // LPCWSTR
        cchStr: i32  // INT
    ) -> i32;
}
// crates: windows-sys provides ready-made bindings for this API.

$sig = @"
[return: MarshalAs(UnmanagedType.Bool)]
[DllImport("KERNEL32.dll", SetLastError = true)]
public static extern bool IsNLSDefinedString(uint Function, uint dwFlags, IntPtr lpVersionInformation, [MarshalAs(UnmanagedType.LPWStr)] string lpString, int cchStr);
"@
$api = Add-Type -MemberDefinition $sig -Name 'KERNEL32_IsNLSDefinedString' -Namespace Win32 -PassThru
# $api::IsNLSDefinedString(Function, dwFlags, lpVersionInformation, lpString, cchStr)

#uselib "KERNEL32.dll"
#func global IsNLSDefinedString "IsNLSDefinedString" sptr, sptr, sptr, sptr, sptr
; IsNLSDefinedString Function, dwFlags, varptr(lpVersionInformation), lpString, cchStr   ; 戻り値は stat
; Function : DWORD -> "sptr"
; dwFlags : DWORD -> "sptr"
; lpVersionInformation : NLSVERSIONINFO* -> "sptr"
; lpString : LPCWSTR -> "sptr"
; cchStr : INT -> "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 "KERNEL32.dll"
#cfunc global IsNLSDefinedString "IsNLSDefinedString" int, int, var, wstr, int
; res = IsNLSDefinedString(Function, dwFlags, lpVersionInformation, lpString, cchStr)
; Function : DWORD -> "int"
; dwFlags : DWORD -> "int"
; lpVersionInformation : NLSVERSIONINFO* -> "var"
; lpString : LPCWSTR -> "wstr"
; cchStr : INT -> "int"
; ※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 IsNLSDefinedString(DWORD Function, DWORD dwFlags, NLSVERSIONINFO* lpVersionInformation, LPCWSTR lpString, INT cchStr)
#uselib "KERNEL32.dll"
#cfunc global IsNLSDefinedString "IsNLSDefinedString" int, int, var, wstr, int
; res = IsNLSDefinedString(Function, dwFlags, lpVersionInformation, lpString, cchStr)
; Function : DWORD -> "int"
; dwFlags : DWORD -> "int"
; lpVersionInformation : NLSVERSIONINFO* -> "var"
; lpString : LPCWSTR -> "wstr"
; cchStr : INT -> "int"
; ※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 (
	kernel32 = windows.NewLazySystemDLL("KERNEL32.dll")
	procIsNLSDefinedString = kernel32.NewProc("IsNLSDefinedString")
)

// Function (DWORD), dwFlags (DWORD), lpVersionInformation (NLSVERSIONINFO*), lpString (LPCWSTR), cchStr (INT)
r1, _, err := procIsNLSDefinedString.Call(
	uintptr(Function),
	uintptr(dwFlags),
	uintptr(lpVersionInformation),
	uintptr(unsafe.Pointer(windows.StringToUTF16Ptr(lpString))),
	uintptr(cchStr),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // BOOL

function IsNLSDefinedString(
  Function: DWORD;   // DWORD
  dwFlags: DWORD;   // DWORD
  lpVersionInformation: Pointer;   // NLSVERSIONINFO*
  lpString: PWideChar;   // LPCWSTR
  cchStr: Integer   // INT
): BOOL; stdcall;
  external 'KERNEL32.dll' name 'IsNLSDefinedString';

result := DllCall("KERNEL32\IsNLSDefinedString"
    , "UInt", Function   ; DWORD
    , "UInt", dwFlags   ; DWORD
    , "Ptr", lpVersionInformation   ; NLSVERSIONINFO*
    , "WStr", lpString   ; LPCWSTR
    , "Int", cchStr   ; INT
    , "Int")   ; return: BOOL

●IsNLSDefinedString(Function, dwFlags, lpVersionInformation, lpString, cchStr) = DLL("KERNEL32.dll", "bool IsNLSDefinedString(dword, dword, void*, char*, int)")
# 呼び出し: IsNLSDefinedString(Function, dwFlags, lpVersionInformation, lpString, cchStr)
# Function : DWORD -> "dword"
# dwFlags : DWORD -> "dword"
# lpVersionInformation : NLSVERSIONINFO* -> "void*"
# lpString : LPCWSTR -> "char*"
# cchStr : INT -> "int"
# 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)。