SetupGetFieldCount

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

DWORD SetupGetFieldCount(
    INFCONTEXT* Context
);

<DllImport("SETUPAPI.dll", SetLastError:=True, ExactSpelling:=True)>
Public Shared Function SetupGetFieldCount(
    Context As IntPtr   ' INFCONTEXT*
) As UInteger
End Function

' Context : INFCONTEXT*
Declare PtrSafe Function SetupGetFieldCount Lib "setupapi" ( _
    ByVal Context 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

SetupGetFieldCount = ctypes.windll.setupapi.SetupGetFieldCount
SetupGetFieldCount.restype = wintypes.DWORD
SetupGetFieldCount.argtypes = [
    ctypes.c_void_p,  # Context : INFCONTEXT*
]
# GetLastError: use ctypes.GetLastError() (or ctypes.WinDLL(use_last_error=True))

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('SETUPAPI.dll')
SetupGetFieldCount = Fiddle::Function.new(
  lib['SetupGetFieldCount'],
  [
    Fiddle::TYPE_VOIDP,  # Context : INFCONTEXT*
  ],
  -Fiddle::TYPE_INT)

#[link(name = "setupapi")]
extern "system" {
    fn SetupGetFieldCount(
        Context: *mut INFCONTEXT  // INFCONTEXT*
    ) -> u32;
}
// crates: windows-sys provides ready-made bindings for this API.

$sig = @"
[DllImport("SETUPAPI.dll", SetLastError = true)]
public static extern uint SetupGetFieldCount(IntPtr Context);
"@
$api = Add-Type -MemberDefinition $sig -Name 'SETUPAPI_SetupGetFieldCount' -Namespace Win32 -PassThru
# $api::SetupGetFieldCount(Context)

#uselib "SETUPAPI.dll"
#func global SetupGetFieldCount "SetupGetFieldCount" sptr
; SetupGetFieldCount varptr(Context)   ; 戻り値は stat
; Context : INFCONTEXT* -> "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。

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

var (
	setupapi = windows.NewLazySystemDLL("SETUPAPI.dll")
	procSetupGetFieldCount = setupapi.NewProc("SetupGetFieldCount")
)

// Context (INFCONTEXT*)
r1, _, err := procSetupGetFieldCount.Call(
	uintptr(Context),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // DWORD

function SetupGetFieldCount(
  Context: Pointer   // INFCONTEXT*
): DWORD; stdcall;
  external 'SETUPAPI.dll' name 'SetupGetFieldCount';

result := DllCall("SETUPAPI\SetupGetFieldCount"
    , "Ptr", Context   ; INFCONTEXT*
    , "UInt")   ; return: DWORD

●SetupGetFieldCount(Context) = DLL("SETUPAPI.dll", "dword SetupGetFieldCount(void*)")
# 呼び出し: SetupGetFieldCount(Context)
# Context : INFCONTEXT* -> "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)。

const std = @import("std");

extern "setupapi" fn SetupGetFieldCount(
    Context: [*c]INFCONTEXT // INFCONTEXT*
) callconv(std.os.windows.WINAPI) u32;

proc SetupGetFieldCount(
    Context: ptr INFCONTEXT  # INFCONTEXT*
): uint32 {.importc: "SetupGetFieldCount", stdcall, dynlib: "SETUPAPI.dll".}

pragma(lib, "setupapi");
extern(Windows)
uint SetupGetFieldCount(
    INFCONTEXT* Context   // INFCONTEXT*
);

ccall((:SetupGetFieldCount, "SETUPAPI.dll"), stdcall, UInt32,
      (Ptr{INFCONTEXT},),
      Context)
# Context : INFCONTEXT* -> Ptr{INFCONTEXT}
# stdcall は 32bit のみ意味を持つ(x64 では無視)。

local ffi = require("ffi")
ffi.cdef[[
uint32_t SetupGetFieldCount(
    void* Context);
]]
local setupapi = ffi.load("setupapi")
-- setupapi.SetupGetFieldCount(Context)
-- Context : INFCONTEXT*
-- 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('SETUPAPI.dll');
const SetupGetFieldCount = lib.func('__stdcall', 'SetupGetFieldCount', 'uint32_t', ['void *']);
// SetupGetFieldCount(Context)
// Context : INFCONTEXT* -> 'void *'
// 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("SETUPAPI.dll", {
  SetupGetFieldCount: { parameters: ["pointer"], result: "u32" },
});
// lib.symbols.SetupGetFieldCount(Context)
// Context : INFCONTEXT* -> "pointer"
// 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
uint32_t SetupGetFieldCount(
    void* Context);
C, "SETUPAPI.dll");
// $ffi->SetupGetFieldCount(Context);
// Context : INFCONTEXT*
// 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 Setupapi extends StdCallLibrary {
    Setupapi INSTANCE = Native.load("setupapi", Setupapi.class);
    int SetupGetFieldCount(
        Pointer Context   // INFCONTEXT*
    );
}

@[Link("setupapi")]
lib LibSETUPAPI
  fun SetupGetFieldCount = SetupGetFieldCount(
    Context : INFCONTEXT*   # INFCONTEXT*
  ) : UInt32
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 SetupGetFieldCountNative = Uint32 Function(Pointer<Void>);
typedef SetupGetFieldCountDart = int Function(Pointer<Void>);
final SetupGetFieldCount = DynamicLibrary.open('SETUPAPI.dll')
    .lookupFunction<SetupGetFieldCountNative, SetupGetFieldCountDart>('SetupGetFieldCount');
// Context : INFCONTEXT* -> Pointer<Void>
// 文字列は package:ffi の "...".toNativeUtf16()/toNativeUtf8() で変換。

{$mode objfpc}{$H+}
function SetupGetFieldCount(
  Context: Pointer   // INFCONTEXT*
): DWORD; stdcall;
  external 'SETUPAPI.dll' name 'SetupGetFieldCount';

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

foreign import stdcall safe "SetupGetFieldCount"
  c_SetupGetFieldCount :: Ptr () -> IO Word32
-- Context : INFCONTEXT* -> Ptr ()
-- 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 setupgetfieldcount =
  foreign "SetupGetFieldCount"
    ((ptr void) @-> returning uint32_t)
(* Context : INFCONTEXT* -> (ptr void) *)
(* 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 setupapi (t "SETUPAPI.dll"))
(cffi:use-foreign-library setupapi)

(cffi:defcfun ("SetupGetFieldCount" setup-get-field-count :convention :stdcall) :uint32
  (context :pointer))   ; INFCONTEXT*
; isize/usize(INT_PTR/SIZE_T)は x64 前提で :int64/:uint64。x86 では :int32/:uint32。

use Win32::API;
my $SetupGetFieldCount = Win32::API::More->new('SETUPAPI',
    'DWORD SetupGetFieldCount(LPVOID Context)');
# my $ret = $SetupGetFieldCount->Call($Context);
# Context : INFCONTEXT* -> LPVOID
# 値渡し構造体は pack() した文字列、または Win32::API::Struct を使用。