GetCommConfig

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

BOOL GetCommConfig(
    HANDLE hCommDev,
    COMMCONFIG* lpCC,   // optional
    DWORD* lpdwSize
);

<DllImport("KERNEL32.dll", SetLastError:=True, ExactSpelling:=True)>
Public Shared Function GetCommConfig(
    hCommDev As IntPtr,   ' HANDLE
    lpCC As IntPtr,   ' COMMCONFIG* optional, out
    ByRef lpdwSize As UInteger   ' DWORD* in/out
) As <MarshalAs(UnmanagedType.Bool)> Boolean
End Function

' hCommDev : HANDLE
' lpCC : COMMCONFIG* optional, out
' lpdwSize : DWORD* in/out
Declare PtrSafe Function GetCommConfig Lib "kernel32" ( _
    ByVal hCommDev As LongPtr, _
    ByVal lpCC As LongPtr, _
    ByRef lpdwSize 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

GetCommConfig = ctypes.windll.kernel32.GetCommConfig
GetCommConfig.restype = wintypes.BOOL
GetCommConfig.argtypes = [
    wintypes.HANDLE,  # hCommDev : HANDLE
    ctypes.c_void_p,  # lpCC : COMMCONFIG* optional, out
    ctypes.POINTER(wintypes.DWORD),  # lpdwSize : DWORD* in/out
]
# GetLastError: use ctypes.GetLastError() (or ctypes.WinDLL(use_last_error=True))

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('KERNEL32.dll')
GetCommConfig = Fiddle::Function.new(
  lib['GetCommConfig'],
  [
    Fiddle::TYPE_VOIDP,  # hCommDev : HANDLE
    Fiddle::TYPE_VOIDP,  # lpCC : COMMCONFIG* optional, out
    Fiddle::TYPE_VOIDP,  # lpdwSize : DWORD* in/out
  ],
  Fiddle::TYPE_INT)

#[link(name = "kernel32")]
extern "system" {
    fn GetCommConfig(
        hCommDev: *mut core::ffi::c_void,  // HANDLE
        lpCC: *mut COMMCONFIG,  // COMMCONFIG* optional, out
        lpdwSize: *mut u32  // DWORD* in/out
    ) -> 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 GetCommConfig(IntPtr hCommDev, IntPtr lpCC, ref uint lpdwSize);
"@
$api = Add-Type -MemberDefinition $sig -Name 'KERNEL32_GetCommConfig' -Namespace Win32 -PassThru
# $api::GetCommConfig(hCommDev, lpCC, lpdwSize)

#uselib "KERNEL32.dll"
#func global GetCommConfig "GetCommConfig" sptr, sptr, sptr
; GetCommConfig hCommDev, varptr(lpCC), varptr(lpdwSize)   ; 戻り値は stat
; hCommDev : HANDLE -> "sptr"
; lpCC : COMMCONFIG* optional, out -> "sptr"
; lpdwSize : DWORD* in/out -> "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 (
	kernel32 = windows.NewLazySystemDLL("KERNEL32.dll")
	procGetCommConfig = kernel32.NewProc("GetCommConfig")
)

// hCommDev (HANDLE), lpCC (COMMCONFIG* optional, out), lpdwSize (DWORD* in/out)
r1, _, err := procGetCommConfig.Call(
	uintptr(hCommDev),
	uintptr(lpCC),
	uintptr(lpdwSize),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // BOOL

function GetCommConfig(
  hCommDev: THandle;   // HANDLE
  lpCC: Pointer;   // COMMCONFIG* optional, out
  lpdwSize: Pointer   // DWORD* in/out
): BOOL; stdcall;
  external 'KERNEL32.dll' name 'GetCommConfig';

result := DllCall("KERNEL32\GetCommConfig"
    , "Ptr", hCommDev   ; HANDLE
    , "Ptr", lpCC   ; COMMCONFIG* optional, out
    , "Ptr", lpdwSize   ; DWORD* in/out
    , "Int")   ; return: BOOL

●GetCommConfig(hCommDev, lpCC, lpdwSize) = DLL("KERNEL32.dll", "bool GetCommConfig(void*, void*, void*)")
# 呼び出し: GetCommConfig(hCommDev, lpCC, lpdwSize)
# hCommDev : HANDLE -> "void*"
# lpCC : COMMCONFIG* optional, out -> "void*"
# lpdwSize : DWORD* in/out -> "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 "kernel32" fn GetCommConfig(
    hCommDev: ?*anyopaque, // HANDLE
    lpCC: [*c]COMMCONFIG, // COMMCONFIG* optional, out
    lpdwSize: [*c]u32 // DWORD* in/out
) callconv(std.os.windows.WINAPI) i32;

proc GetCommConfig(
    hCommDev: pointer,  # HANDLE
    lpCC: ptr COMMCONFIG,  # COMMCONFIG* optional, out
    lpdwSize: ptr uint32  # DWORD* in/out
): int32 {.importc: "GetCommConfig", stdcall, dynlib: "KERNEL32.dll".}

pragma(lib, "kernel32");
extern(Windows)
int GetCommConfig(
    void* hCommDev,   // HANDLE
    COMMCONFIG* lpCC,   // COMMCONFIG* optional, out
    uint* lpdwSize   // DWORD* in/out
);

ccall((:GetCommConfig, "KERNEL32.dll"), stdcall, Int32,
      (Ptr{Cvoid}, Ptr{COMMCONFIG}, Ptr{UInt32}),
      hCommDev, lpCC, lpdwSize)
# hCommDev : HANDLE -> Ptr{Cvoid}
# lpCC : COMMCONFIG* optional, out -> Ptr{COMMCONFIG}
# lpdwSize : DWORD* in/out -> Ptr{UInt32}
# stdcall は 32bit のみ意味を持つ(x64 では無視)。

local ffi = require("ffi")
ffi.cdef[[
int32_t GetCommConfig(
    void* hCommDev,
    void* lpCC,
    uint32_t* lpdwSize);
]]
local kernel32 = ffi.load("kernel32")
-- kernel32.GetCommConfig(hCommDev, lpCC, lpdwSize)
-- hCommDev : HANDLE
-- lpCC : COMMCONFIG* optional, out
-- lpdwSize : DWORD* in/out
-- 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 GetCommConfig = lib.func('__stdcall', 'GetCommConfig', 'int32_t', ['void *', 'void *', 'uint32_t *']);
// GetCommConfig(hCommDev, lpCC, lpdwSize)
// hCommDev : HANDLE -> 'void *'
// lpCC : COMMCONFIG* optional, out -> 'void *'
// lpdwSize : DWORD* in/out -> 'uint32_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", {
  GetCommConfig: { parameters: ["pointer", "pointer", "pointer"], result: "i32" },
});
// lib.symbols.GetCommConfig(hCommDev, lpCC, lpdwSize)
// hCommDev : HANDLE -> "pointer"
// lpCC : COMMCONFIG* optional, out -> "pointer"
// lpdwSize : DWORD* in/out -> "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
int32_t GetCommConfig(
    void* hCommDev,
    void* lpCC,
    uint32_t* lpdwSize);
C, "KERNEL32.dll");
// $ffi->GetCommConfig(hCommDev, lpCC, lpdwSize);
// hCommDev : HANDLE
// lpCC : COMMCONFIG* optional, out
// lpdwSize : DWORD* in/out
// 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);
    boolean GetCommConfig(
        Pointer hCommDev,   // HANDLE
        Pointer lpCC,   // COMMCONFIG* optional, out
        IntByReference lpdwSize   // DWORD* in/out
    );
}

@[Link("kernel32")]
lib LibKERNEL32
  fun GetCommConfig = GetCommConfig(
    hCommDev : Void*,   # HANDLE
    lpCC : COMMCONFIG*,   # COMMCONFIG* optional, out
    lpdwSize : UInt32*   # DWORD* in/out
  ) : 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 GetCommConfigNative = Int32 Function(Pointer<Void>, Pointer<Void>, Pointer<Uint32>);
typedef GetCommConfigDart = int Function(Pointer<Void>, Pointer<Void>, Pointer<Uint32>);
final GetCommConfig = DynamicLibrary.open('KERNEL32.dll')
    .lookupFunction<GetCommConfigNative, GetCommConfigDart>('GetCommConfig');
// hCommDev : HANDLE -> Pointer<Void>
// lpCC : COMMCONFIG* optional, out -> Pointer<Void>
// lpdwSize : DWORD* in/out -> Pointer<Uint32>
// 文字列は package:ffi の "...".toNativeUtf16()/toNativeUtf8() で変換。

{$mode objfpc}{$H+}
function GetCommConfig(
  hCommDev: THandle;   // HANDLE
  lpCC: Pointer;   // COMMCONFIG* optional, out
  lpdwSize: Pointer   // DWORD* in/out
): BOOL; stdcall;
  external 'KERNEL32.dll' name 'GetCommConfig';

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

foreign import stdcall safe "GetCommConfig"
  c_GetCommConfig :: Ptr () -> Ptr () -> Ptr Word32 -> IO CInt
-- hCommDev : HANDLE -> Ptr ()
-- lpCC : COMMCONFIG* optional, out -> Ptr ()
-- lpdwSize : DWORD* in/out -> Ptr Word32
-- 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 getcommconfig =
  foreign "GetCommConfig"
    ((ptr void) @-> (ptr void) @-> (ptr uint32_t) @-> returning int32_t)
(* hCommDev : HANDLE -> (ptr void) *)
(* lpCC : COMMCONFIG* optional, out -> (ptr void) *)
(* lpdwSize : DWORD* in/out -> (ptr uint32_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 ("GetCommConfig" get-comm-config :convention :stdcall) :int32
  (h-comm-dev :pointer)   ; HANDLE
  (lp-cc :pointer)   ; COMMCONFIG* optional, out
  (lpdw-size :pointer))   ; DWORD* in/out
; isize/usize(INT_PTR/SIZE_T)は x64 前提で :int64/:uint64。x86 では :int32/:uint32。

use Win32::API;
my $GetCommConfig = Win32::API::More->new('KERNEL32',
    'BOOL GetCommConfig(HANDLE hCommDev, LPVOID lpCC, LPVOID lpdwSize)');
# my $ret = $GetCommConfig->Call($hCommDev, $lpCC, $lpdwSize);
# hCommDev : HANDLE -> HANDLE
# lpCC : COMMCONFIG* optional, out -> LPVOID
# lpdwSize : DWORD* in/out -> LPVOID
# 値渡し構造体は pack() した文字列、または Win32::API::Struct を使用。