EnumSystemLocalesEx

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

BOOL EnumSystemLocalesEx(
    LOCALE_ENUMPROCEX lpLocaleEnumProcEx,
    DWORD dwFlags,
    LPARAM lParam,
    void* lpReserved   // optional
);

<DllImport("KERNEL32.dll", SetLastError:=True, ExactSpelling:=True)>
Public Shared Function EnumSystemLocalesEx(
    lpLocaleEnumProcEx As IntPtr,   ' LOCALE_ENUMPROCEX
    dwFlags As UInteger,   ' DWORD
    lParam As IntPtr,   ' LPARAM
    lpReserved As IntPtr   ' void* optional
) As Boolean
End Function

' lpLocaleEnumProcEx : LOCALE_ENUMPROCEX
' dwFlags : DWORD
' lParam : LPARAM
' lpReserved : void* optional
Declare PtrSafe Function EnumSystemLocalesEx Lib "kernel32" ( _
    ByVal lpLocaleEnumProcEx As LongPtr, _
    ByVal dwFlags As Long, _
    ByVal lParam As LongPtr, _
    ByVal lpReserved 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

EnumSystemLocalesEx = ctypes.windll.kernel32.EnumSystemLocalesEx
EnumSystemLocalesEx.restype = wintypes.BOOL
EnumSystemLocalesEx.argtypes = [
    ctypes.c_void_p,  # lpLocaleEnumProcEx : LOCALE_ENUMPROCEX
    wintypes.DWORD,  # dwFlags : DWORD
    ctypes.c_ssize_t,  # lParam : LPARAM
    ctypes.POINTER(None),  # lpReserved : void* optional
]
# GetLastError: use ctypes.GetLastError() (or ctypes.WinDLL(use_last_error=True))

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('KERNEL32.dll')
EnumSystemLocalesEx = Fiddle::Function.new(
  lib['EnumSystemLocalesEx'],
  [
    Fiddle::TYPE_VOIDP,  # lpLocaleEnumProcEx : LOCALE_ENUMPROCEX
    -Fiddle::TYPE_INT,  # dwFlags : DWORD
    Fiddle::TYPE_INTPTR_T,  # lParam : LPARAM
    Fiddle::TYPE_VOIDP,  # lpReserved : void* optional
  ],
  Fiddle::TYPE_INT)

#[link(name = "kernel32")]
extern "system" {
    fn EnumSystemLocalesEx(
        lpLocaleEnumProcEx: *const core::ffi::c_void,  // LOCALE_ENUMPROCEX
        dwFlags: u32,  // DWORD
        lParam: isize,  // LPARAM
        lpReserved: *mut ()  // void* optional
    ) -> 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 EnumSystemLocalesEx(IntPtr lpLocaleEnumProcEx, uint dwFlags, IntPtr lParam, IntPtr lpReserved);
"@
$api = Add-Type -MemberDefinition $sig -Name 'KERNEL32_EnumSystemLocalesEx' -Namespace Win32 -PassThru
# $api::EnumSystemLocalesEx(lpLocaleEnumProcEx, dwFlags, lParam, lpReserved)

#uselib "KERNEL32.dll"
#func global EnumSystemLocalesEx "EnumSystemLocalesEx" sptr, sptr, sptr, sptr
; EnumSystemLocalesEx lpLocaleEnumProcEx, dwFlags, lParam, lpReserved   ; 戻り値は stat
; lpLocaleEnumProcEx : LOCALE_ENUMPROCEX -> "sptr"
; dwFlags : DWORD -> "sptr"
; lParam : LPARAM -> "sptr"
; lpReserved : void* optional -> "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 EnumSystemLocalesEx "EnumSystemLocalesEx" sptr, int, sptr, sptr
; res = EnumSystemLocalesEx(lpLocaleEnumProcEx, dwFlags, lParam, lpReserved)
; lpLocaleEnumProcEx : LOCALE_ENUMPROCEX -> "sptr"
; dwFlags : DWORD -> "int"
; lParam : LPARAM -> "sptr"
; lpReserved : void* optional -> "sptr"

; BOOL EnumSystemLocalesEx(LOCALE_ENUMPROCEX lpLocaleEnumProcEx, DWORD dwFlags, LPARAM lParam, void* lpReserved)
#uselib "KERNEL32.dll"
#cfunc global EnumSystemLocalesEx "EnumSystemLocalesEx" intptr, int, intptr, intptr
; res = EnumSystemLocalesEx(lpLocaleEnumProcEx, dwFlags, lParam, lpReserved)
; lpLocaleEnumProcEx : LOCALE_ENUMPROCEX -> "intptr"
; dwFlags : DWORD -> "int"
; lParam : LPARAM -> "intptr"
; lpReserved : void* optional -> "intptr"

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

var (
	kernel32 = windows.NewLazySystemDLL("KERNEL32.dll")
	procEnumSystemLocalesEx = kernel32.NewProc("EnumSystemLocalesEx")
)

// lpLocaleEnumProcEx (LOCALE_ENUMPROCEX), dwFlags (DWORD), lParam (LPARAM), lpReserved (void* optional)
r1, _, err := procEnumSystemLocalesEx.Call(
	uintptr(lpLocaleEnumProcEx),
	uintptr(dwFlags),
	uintptr(lParam),
	uintptr(lpReserved),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // BOOL

function EnumSystemLocalesEx(
  lpLocaleEnumProcEx: Pointer;   // LOCALE_ENUMPROCEX
  dwFlags: DWORD;   // DWORD
  lParam: NativeInt;   // LPARAM
  lpReserved: Pointer   // void* optional
): BOOL; stdcall;
  external 'KERNEL32.dll' name 'EnumSystemLocalesEx';

result := DllCall("KERNEL32\EnumSystemLocalesEx"
    , "Ptr", lpLocaleEnumProcEx   ; LOCALE_ENUMPROCEX
    , "UInt", dwFlags   ; DWORD
    , "Ptr", lParam   ; LPARAM
    , "Ptr", lpReserved   ; void* optional
    , "Int")   ; return: BOOL

●EnumSystemLocalesEx(lpLocaleEnumProcEx, dwFlags, lParam, lpReserved) = DLL("KERNEL32.dll", "bool EnumSystemLocalesEx(void*, dword, int, void*)")
# 呼び出し: EnumSystemLocalesEx(lpLocaleEnumProcEx, dwFlags, lParam, lpReserved)
# lpLocaleEnumProcEx : LOCALE_ENUMPROCEX -> "void*"
# dwFlags : DWORD -> "dword"
# lParam : LPARAM -> "int"
# lpReserved : void* optional -> "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)。