IsValidLanguageGroup

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

BOOL IsValidLanguageGroup(
    DWORD LanguageGroup,
    ENUM_SYSTEM_LANGUAGE_GROUPS_FLAGS dwFlags
);

<DllImport("KERNEL32.dll", ExactSpelling:=True)>
Public Shared Function IsValidLanguageGroup(
    LanguageGroup As UInteger,   ' DWORD
    dwFlags As UInteger   ' ENUM_SYSTEM_LANGUAGE_GROUPS_FLAGS
) As Boolean
End Function

' LanguageGroup : DWORD
' dwFlags : ENUM_SYSTEM_LANGUAGE_GROUPS_FLAGS
Declare PtrSafe Function IsValidLanguageGroup Lib "kernel32" ( _
    ByVal LanguageGroup As Long, _
    ByVal dwFlags 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

IsValidLanguageGroup = ctypes.windll.kernel32.IsValidLanguageGroup
IsValidLanguageGroup.restype = wintypes.BOOL
IsValidLanguageGroup.argtypes = [
    wintypes.DWORD,  # LanguageGroup : DWORD
    wintypes.DWORD,  # dwFlags : ENUM_SYSTEM_LANGUAGE_GROUPS_FLAGS
]

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('KERNEL32.dll')
IsValidLanguageGroup = Fiddle::Function.new(
  lib['IsValidLanguageGroup'],
  [
    -Fiddle::TYPE_INT,  # LanguageGroup : DWORD
    -Fiddle::TYPE_INT,  # dwFlags : ENUM_SYSTEM_LANGUAGE_GROUPS_FLAGS
  ],
  Fiddle::TYPE_INT)

#[link(name = "kernel32")]
extern "system" {
    fn IsValidLanguageGroup(
        LanguageGroup: u32,  // DWORD
        dwFlags: u32  // ENUM_SYSTEM_LANGUAGE_GROUPS_FLAGS
    ) -> i32;
}
// crates: windows-sys provides ready-made bindings for this API.

$sig = @"
[return: MarshalAs(UnmanagedType.Bool)]
[DllImport("KERNEL32.dll")]
public static extern bool IsValidLanguageGroup(uint LanguageGroup, uint dwFlags);
"@
$api = Add-Type -MemberDefinition $sig -Name 'KERNEL32_IsValidLanguageGroup' -Namespace Win32 -PassThru
# $api::IsValidLanguageGroup(LanguageGroup, dwFlags)

#uselib "KERNEL32.dll"
#func global IsValidLanguageGroup "IsValidLanguageGroup" sptr, sptr
; IsValidLanguageGroup LanguageGroup, dwFlags   ; 戻り値は stat
; LanguageGroup : DWORD -> "sptr"
; dwFlags : ENUM_SYSTEM_LANGUAGE_GROUPS_FLAGS -> "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 IsValidLanguageGroup "IsValidLanguageGroup" int, int
; res = IsValidLanguageGroup(LanguageGroup, dwFlags)
; LanguageGroup : DWORD -> "int"
; dwFlags : ENUM_SYSTEM_LANGUAGE_GROUPS_FLAGS -> "int"

; BOOL IsValidLanguageGroup(DWORD LanguageGroup, ENUM_SYSTEM_LANGUAGE_GROUPS_FLAGS dwFlags)
#uselib "KERNEL32.dll"
#cfunc global IsValidLanguageGroup "IsValidLanguageGroup" int, int
; res = IsValidLanguageGroup(LanguageGroup, dwFlags)
; LanguageGroup : DWORD -> "int"
; dwFlags : ENUM_SYSTEM_LANGUAGE_GROUPS_FLAGS -> "int"

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

var (
	kernel32 = windows.NewLazySystemDLL("KERNEL32.dll")
	procIsValidLanguageGroup = kernel32.NewProc("IsValidLanguageGroup")
)

// LanguageGroup (DWORD), dwFlags (ENUM_SYSTEM_LANGUAGE_GROUPS_FLAGS)
r1, _, err := procIsValidLanguageGroup.Call(
	uintptr(LanguageGroup),
	uintptr(dwFlags),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // BOOL

function IsValidLanguageGroup(
  LanguageGroup: DWORD;   // DWORD
  dwFlags: DWORD   // ENUM_SYSTEM_LANGUAGE_GROUPS_FLAGS
): BOOL; stdcall;
  external 'KERNEL32.dll' name 'IsValidLanguageGroup';

result := DllCall("KERNEL32\IsValidLanguageGroup"
    , "UInt", LanguageGroup   ; DWORD
    , "UInt", dwFlags   ; ENUM_SYSTEM_LANGUAGE_GROUPS_FLAGS
    , "Int")   ; return: BOOL

●IsValidLanguageGroup(LanguageGroup, dwFlags) = DLL("KERNEL32.dll", "bool IsValidLanguageGroup(dword, dword)")
# 呼び出し: IsValidLanguageGroup(LanguageGroup, dwFlags)
# LanguageGroup : DWORD -> "dword"
# dwFlags : ENUM_SYSTEM_LANGUAGE_GROUPS_FLAGS -> "dword"
# 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)。