IsValidNLSVersion

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

DWORD IsValidNLSVersion(
    DWORD function,
    LPCWSTR lpLocaleName,   // optional
    NLSVERSIONINFOEX* lpVersionInformation
);

<DllImport("KERNEL32.dll", ExactSpelling:=True)>
Public Shared Function IsValidNLSVersion(
    [function] As UInteger,   ' DWORD
    <MarshalAs(UnmanagedType.LPWStr)> lpLocaleName As String,   ' LPCWSTR optional
    lpVersionInformation As IntPtr   ' NLSVERSIONINFOEX*
) As UInteger
End Function

' function : DWORD
' lpLocaleName : LPCWSTR optional
' lpVersionInformation : NLSVERSIONINFOEX*
Declare PtrSafe Function IsValidNLSVersion Lib "kernel32" ( _
    ByVal function As Long, _
    ByVal lpLocaleName As LongPtr, _
    ByVal lpVersionInformation 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

IsValidNLSVersion = ctypes.windll.kernel32.IsValidNLSVersion
IsValidNLSVersion.restype = wintypes.DWORD
IsValidNLSVersion.argtypes = [
    wintypes.DWORD,  # function : DWORD
    wintypes.LPCWSTR,  # lpLocaleName : LPCWSTR optional
    ctypes.c_void_p,  # lpVersionInformation : NLSVERSIONINFOEX*
]

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('KERNEL32.dll')
IsValidNLSVersion = Fiddle::Function.new(
  lib['IsValidNLSVersion'],
  [
    -Fiddle::TYPE_INT,  # function : DWORD
    Fiddle::TYPE_VOIDP,  # lpLocaleName : LPCWSTR optional
    Fiddle::TYPE_VOIDP,  # lpVersionInformation : NLSVERSIONINFOEX*
  ],
  -Fiddle::TYPE_INT)

#[link(name = "kernel32")]
extern "system" {
    fn IsValidNLSVersion(
        function: u32,  // DWORD
        lpLocaleName: *const u16,  // LPCWSTR optional
        lpVersionInformation: *mut NLSVERSIONINFOEX  // NLSVERSIONINFOEX*
    ) -> u32;
}
// crates: windows-sys provides ready-made bindings for this API.

$sig = @"
[DllImport("KERNEL32.dll")]
public static extern uint IsValidNLSVersion(uint function, [MarshalAs(UnmanagedType.LPWStr)] string lpLocaleName, IntPtr lpVersionInformation);
"@
$api = Add-Type -MemberDefinition $sig -Name 'KERNEL32_IsValidNLSVersion' -Namespace Win32 -PassThru
# $api::IsValidNLSVersion(function, lpLocaleName, lpVersionInformation)

#uselib "KERNEL32.dll"
#func global IsValidNLSVersion "IsValidNLSVersion" sptr, sptr, sptr
; IsValidNLSVersion function, lpLocaleName, varptr(lpVersionInformation)   ; 戻り値は stat
; function : DWORD -> "sptr"
; lpLocaleName : LPCWSTR optional -> "sptr"
; lpVersionInformation : NLSVERSIONINFOEX* -> "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 IsValidNLSVersion "IsValidNLSVersion" int, wstr, var
; res = IsValidNLSVersion(function, lpLocaleName, lpVersionInformation)
; function : DWORD -> "int"
; lpLocaleName : LPCWSTR optional -> "wstr"
; lpVersionInformation : NLSVERSIONINFOEX* -> "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。

; DWORD IsValidNLSVersion(DWORD function, LPCWSTR lpLocaleName, NLSVERSIONINFOEX* lpVersionInformation)
#uselib "KERNEL32.dll"
#cfunc global IsValidNLSVersion "IsValidNLSVersion" int, wstr, var
; res = IsValidNLSVersion(function, lpLocaleName, lpVersionInformation)
; function : DWORD -> "int"
; lpLocaleName : LPCWSTR optional -> "wstr"
; lpVersionInformation : NLSVERSIONINFOEX* -> "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 (
	kernel32 = windows.NewLazySystemDLL("KERNEL32.dll")
	procIsValidNLSVersion = kernel32.NewProc("IsValidNLSVersion")
)

// function (DWORD), lpLocaleName (LPCWSTR optional), lpVersionInformation (NLSVERSIONINFOEX*)
r1, _, err := procIsValidNLSVersion.Call(
	uintptr(function),
	uintptr(unsafe.Pointer(windows.StringToUTF16Ptr(lpLocaleName))),
	uintptr(lpVersionInformation),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // DWORD

function IsValidNLSVersion(
  function: DWORD;   // DWORD
  lpLocaleName: PWideChar;   // LPCWSTR optional
  lpVersionInformation: Pointer   // NLSVERSIONINFOEX*
): DWORD; stdcall;
  external 'KERNEL32.dll' name 'IsValidNLSVersion';

result := DllCall("KERNEL32\IsValidNLSVersion"
    , "UInt", function   ; DWORD
    , "WStr", lpLocaleName   ; LPCWSTR optional
    , "Ptr", lpVersionInformation   ; NLSVERSIONINFOEX*
    , "UInt")   ; return: DWORD

●IsValidNLSVersion(function, lpLocaleName, lpVersionInformation) = DLL("KERNEL32.dll", "dword IsValidNLSVersion(dword, char*, void*)")
# 呼び出し: IsValidNLSVersion(function, lpLocaleName, lpVersionInformation)
# function : DWORD -> "dword"
# lpLocaleName : LPCWSTR optional -> "char*"
# lpVersionInformation : NLSVERSIONINFOEX* -> "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)。