EnumUILanguagesW

// KERNEL32.dll  (Unicode / -W)
#include <windows.h>

BOOL EnumUILanguagesW(
    UILANGUAGE_ENUMPROCW lpUILanguageEnumProc,
    DWORD dwFlags,
    INT_PTR lParam
);

<DllImport("KERNEL32.dll", CharSet:=CharSet.Unicode, SetLastError:=True, ExactSpelling:=True)>
Public Shared Function EnumUILanguagesW(
    lpUILanguageEnumProc As IntPtr,   ' UILANGUAGE_ENUMPROCW
    dwFlags As UInteger,   ' DWORD
    lParam As IntPtr   ' INT_PTR
) As Boolean
End Function

' lpUILanguageEnumProc : UILANGUAGE_ENUMPROCW
' dwFlags : DWORD
' lParam : INT_PTR
Declare PtrSafe Function EnumUILanguagesW Lib "kernel32" ( _
    ByVal lpUILanguageEnumProc As LongPtr, _
    ByVal dwFlags As Long, _
    ByVal lParam As LongPtr) 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

EnumUILanguagesW = ctypes.windll.kernel32.EnumUILanguagesW
EnumUILanguagesW.restype = wintypes.BOOL
EnumUILanguagesW.argtypes = [
    ctypes.c_void_p,  # lpUILanguageEnumProc : UILANGUAGE_ENUMPROCW
    wintypes.DWORD,  # dwFlags : DWORD
    ctypes.c_ssize_t,  # lParam : INT_PTR
]
# GetLastError: use ctypes.GetLastError() (or ctypes.WinDLL(use_last_error=True))

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('KERNEL32.dll')
EnumUILanguagesW = Fiddle::Function.new(
  lib['EnumUILanguagesW'],
  [
    Fiddle::TYPE_VOIDP,  # lpUILanguageEnumProc : UILANGUAGE_ENUMPROCW
    -Fiddle::TYPE_INT,  # dwFlags : DWORD
    Fiddle::TYPE_INTPTR_T,  # lParam : INT_PTR
  ],
  Fiddle::TYPE_INT)
# Wide strings: pass str.encode("UTF-16LE") + "\x00\x00"

#[link(name = "kernel32")]
extern "system" {
    fn EnumUILanguagesW(
        lpUILanguageEnumProc: *const core::ffi::c_void,  // UILANGUAGE_ENUMPROCW
        dwFlags: u32,  // DWORD
        lParam: isize  // INT_PTR
    ) -> i32;
}
// crates: windows-sys provides ready-made bindings for this API.

$sig = @"
[return: MarshalAs(UnmanagedType.Bool)]
[DllImport("KERNEL32.dll", CharSet = CharSet.Unicode, SetLastError = true)]
public static extern bool EnumUILanguagesW(IntPtr lpUILanguageEnumProc, uint dwFlags, IntPtr lParam);
"@
$api = Add-Type -MemberDefinition $sig -Name 'KERNEL32_EnumUILanguagesW' -Namespace Win32 -PassThru
# $api::EnumUILanguagesW(lpUILanguageEnumProc, dwFlags, lParam)

#uselib "KERNEL32.dll"
#func global EnumUILanguagesW "EnumUILanguagesW" wptr, wptr, wptr
; EnumUILanguagesW lpUILanguageEnumProc, dwFlags, lParam   ; 戻り値は stat
; lpUILanguageEnumProc : UILANGUAGE_ENUMPROCW -> "wptr"
; dwFlags : DWORD -> "wptr"
; lParam : INT_PTR -> "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 "KERNEL32.dll"
#cfunc global EnumUILanguagesW "EnumUILanguagesW" sptr, int, sptr
; res = EnumUILanguagesW(lpUILanguageEnumProc, dwFlags, lParam)
; lpUILanguageEnumProc : UILANGUAGE_ENUMPROCW -> "sptr"
; dwFlags : DWORD -> "int"
; lParam : INT_PTR -> "sptr"

; BOOL EnumUILanguagesW(UILANGUAGE_ENUMPROCW lpUILanguageEnumProc, DWORD dwFlags, INT_PTR lParam)
#uselib "KERNEL32.dll"
#cfunc global EnumUILanguagesW "EnumUILanguagesW" intptr, int, intptr
; res = EnumUILanguagesW(lpUILanguageEnumProc, dwFlags, lParam)
; lpUILanguageEnumProc : UILANGUAGE_ENUMPROCW -> "intptr"
; dwFlags : DWORD -> "int"
; lParam : INT_PTR -> "intptr"

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

var (
	kernel32 = windows.NewLazySystemDLL("KERNEL32.dll")
	procEnumUILanguagesW = kernel32.NewProc("EnumUILanguagesW")
)

// lpUILanguageEnumProc (UILANGUAGE_ENUMPROCW), dwFlags (DWORD), lParam (INT_PTR)
r1, _, err := procEnumUILanguagesW.Call(
	uintptr(lpUILanguageEnumProc),
	uintptr(dwFlags),
	uintptr(lParam),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // BOOL

function EnumUILanguagesW(
  lpUILanguageEnumProc: Pointer;   // UILANGUAGE_ENUMPROCW
  dwFlags: DWORD;   // DWORD
  lParam: NativeInt   // INT_PTR
): BOOL; stdcall;
  external 'KERNEL32.dll' name 'EnumUILanguagesW';

result := DllCall("KERNEL32\EnumUILanguagesW"
    , "Ptr", lpUILanguageEnumProc   ; UILANGUAGE_ENUMPROCW
    , "UInt", dwFlags   ; DWORD
    , "Ptr", lParam   ; INT_PTR
    , "Int")   ; return: BOOL

●EnumUILanguagesW(lpUILanguageEnumProc, dwFlags, lParam) = DLL("KERNEL32.dll", "bool EnumUILanguagesW(void*, dword, int)")
# 呼び出し: EnumUILanguagesW(lpUILanguageEnumProc, dwFlags, lParam)
# lpUILanguageEnumProc : UILANGUAGE_ENUMPROCW -> "void*"
# dwFlags : DWORD -> "dword"
# lParam : INT_PTR -> "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)。
# ※-W(Unicode)関数。なでしこ1はANSIのため -A 版の利用を推奨。