GetUserGeoID

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

INT GetUserGeoID(
    SYSGEOCLASS GeoClass
);

<DllImport("KERNEL32.dll", ExactSpelling:=True)>
Public Shared Function GetUserGeoID(
    GeoClass As Integer   ' SYSGEOCLASS
) As Integer
End Function

' GeoClass : SYSGEOCLASS
Declare PtrSafe Function GetUserGeoID Lib "kernel32" ( _
    ByVal GeoClass 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

GetUserGeoID = ctypes.windll.kernel32.GetUserGeoID
GetUserGeoID.restype = ctypes.c_int
GetUserGeoID.argtypes = [
    ctypes.c_int,  # GeoClass : SYSGEOCLASS
]

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('KERNEL32.dll')
GetUserGeoID = Fiddle::Function.new(
  lib['GetUserGeoID'],
  [
    Fiddle::TYPE_INT,  # GeoClass : SYSGEOCLASS
  ],
  Fiddle::TYPE_INT)

#[link(name = "kernel32")]
extern "system" {
    fn GetUserGeoID(
        GeoClass: i32  // SYSGEOCLASS
    ) -> i32;
}
// crates: windows-sys provides ready-made bindings for this API.

$sig = @"
[DllImport("KERNEL32.dll")]
public static extern int GetUserGeoID(int GeoClass);
"@
$api = Add-Type -MemberDefinition $sig -Name 'KERNEL32_GetUserGeoID' -Namespace Win32 -PassThru
# $api::GetUserGeoID(GeoClass)

#uselib "KERNEL32.dll"
#func global GetUserGeoID "GetUserGeoID" sptr
; GetUserGeoID GeoClass   ; 戻り値は stat
; GeoClass : SYSGEOCLASS -> "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 GetUserGeoID "GetUserGeoID" int
; res = GetUserGeoID(GeoClass)
; GeoClass : SYSGEOCLASS -> "int"

; INT GetUserGeoID(SYSGEOCLASS GeoClass)
#uselib "KERNEL32.dll"
#cfunc global GetUserGeoID "GetUserGeoID" int
; res = GetUserGeoID(GeoClass)
; GeoClass : SYSGEOCLASS -> "int"

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

var (
	kernel32 = windows.NewLazySystemDLL("KERNEL32.dll")
	procGetUserGeoID = kernel32.NewProc("GetUserGeoID")
)

// GeoClass (SYSGEOCLASS)
r1, _, err := procGetUserGeoID.Call(
	uintptr(GeoClass),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // INT

function GetUserGeoID(
  GeoClass: Integer   // SYSGEOCLASS
): Integer; stdcall;
  external 'KERNEL32.dll' name 'GetUserGeoID';

result := DllCall("KERNEL32\GetUserGeoID"
    , "Int", GeoClass   ; SYSGEOCLASS
    , "Int")   ; return: INT

●GetUserGeoID(GeoClass) = DLL("KERNEL32.dll", "int GetUserGeoID(int)")
# 呼び出し: GetUserGeoID(GeoClass)
# GeoClass : SYSGEOCLASS -> "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)。

const std = @import("std");

extern "kernel32" fn GetUserGeoID(
    GeoClass: i32 // SYSGEOCLASS
) callconv(std.os.windows.WINAPI) i32;

proc GetUserGeoID(
    GeoClass: int32  # SYSGEOCLASS
): int32 {.importc: "GetUserGeoID", stdcall, dynlib: "KERNEL32.dll".}

pragma(lib, "kernel32");
extern(Windows)
int GetUserGeoID(
    int GeoClass   // SYSGEOCLASS
);

ccall((:GetUserGeoID, "KERNEL32.dll"), stdcall, Int32,
      (Int32,),
      GeoClass)
# GeoClass : SYSGEOCLASS -> Int32
# stdcall は 32bit のみ意味を持つ(x64 では無視)。

local ffi = require("ffi")
ffi.cdef[[
int32_t GetUserGeoID(
    int32_t GeoClass);
]]
local kernel32 = ffi.load("kernel32")
-- kernel32.GetUserGeoID(GeoClass)
-- GeoClass : SYSGEOCLASS
-- 構造体/GUIDへのポインタは cdef が通るよう void* で表記(実型は各引数コメント参照)。値渡し構造体・enum は対応する typedef を cdef に追加すること。

const koffi = require('koffi');
const lib = koffi.load('KERNEL32.dll');
const GetUserGeoID = lib.func('__stdcall', 'GetUserGeoID', 'int32_t', ['int32_t']);
// GetUserGeoID(GeoClass)
// GeoClass : SYSGEOCLASS -> 'int32_t'
// 出力ポインタは koffi.out(...) で包む。構造体は koffi.struct で定義。

const lib = Deno.dlopen("KERNEL32.dll", {
  GetUserGeoID: { parameters: ["i32"], result: "i32" },
});
// lib.symbols.GetUserGeoID(GeoClass)
// GeoClass : SYSGEOCLASS -> "i32"
// 文字列引数は "buffer"(NUL 終端のバイト列を Uint8Array で渡す)。
// 値渡し構造体は { struct: [ ...field types... ] } を使用。

<?php
$ffi = FFI::cdef(<<<C
int32_t GetUserGeoID(
    int32_t GeoClass);
C, "KERNEL32.dll");
// $ffi->GetUserGeoID(GeoClass);
// GeoClass : SYSGEOCLASS
// 構造体/GUIDへのポインタは cdef が通るよう void* で表記(実型は各引数コメント参照)。値渡し構造体・enum は対応する typedef を cdef に追加すること。
// WINAPI(stdcall): x64 では呼出規約が統一されるため問題なし。x86 では __stdcall 対応のラッパが必要な場合あり。

import com.sun.jna.*;
import com.sun.jna.ptr.*;
import com.sun.jna.win32.StdCallLibrary;
import com.sun.jna.win32.W32APIOptions;

public interface Kernel32 extends StdCallLibrary {
    Kernel32 INSTANCE = Native.load("kernel32", Kernel32.class);
    int GetUserGeoID(
        int GeoClass   // SYSGEOCLASS
    );
}

@[Link("kernel32")]
lib LibKERNEL32
  fun GetUserGeoID = GetUserGeoID(
    GeoClass : Int32   # SYSGEOCLASS
  ) : Int32
end
# 構造体/GUID/enum は lib 内に対応する型定義が必要。
# 呼出規約: x64 は規約統一のため OK。x86(32bit)は WINAPI=stdcall だが Crystal の fun に stdcall 付与構文がなく非対応。

import 'dart:ffi';
import 'package:ffi/ffi.dart';

typedef GetUserGeoIDNative = Int32 Function(Int32);
typedef GetUserGeoIDDart = int Function(int);
final GetUserGeoID = DynamicLibrary.open('KERNEL32.dll')
    .lookupFunction<GetUserGeoIDNative, GetUserGeoIDDart>('GetUserGeoID');
// GeoClass : SYSGEOCLASS -> Int32
// 文字列は package:ffi の "...".toNativeUtf16()/toNativeUtf8() で変換。

{$mode objfpc}{$H+}
function GetUserGeoID(
  GeoClass: Integer   // SYSGEOCLASS
): Integer; stdcall;
  external 'KERNEL32.dll' name 'GetUserGeoID';

import Foreign
import Foreign.C.Types
import Foreign.C.String

foreign import stdcall safe "GetUserGeoID"
  c_GetUserGeoID :: Int32 -> IO Int32
-- GeoClass : SYSGEOCLASS -> Int32
-- 要 GHC(Windows)。stdcall は x64 では ccall として扱われる。ブロックする API は safe 呼び出し推奨。

open Ctypes
open Foreign

let getusergeoid =
  foreign "GetUserGeoID"
    (int32_t @-> returning int32_t)
(* GeoClass : SYSGEOCLASS -> int32_t *)
(* foreign は cdecl 前提。x64 Windows では WINAPI と一致。構造体は ctypes structure を定義のこと。 *)

(cffi:define-foreign-library kernel32 (t "KERNEL32.dll"))
(cffi:use-foreign-library kernel32)

(cffi:defcfun ("GetUserGeoID" get-user-geo-id :convention :stdcall) :int32
  (geo-class :int32))   ; SYSGEOCLASS
; isize/usize(INT_PTR/SIZE_T)は x64 前提で :int64/:uint64。x86 では :int32/:uint32。

use Win32::API;
my $GetUserGeoID = Win32::API::More->new('KERNEL32',
    'int GetUserGeoID(int GeoClass)');
# my $ret = $GetUserGeoID->Call($GeoClass);
# GeoClass : SYSGEOCLASS -> int
# 値渡し構造体は pack() した文字列、または Win32::API::Struct を使用。