OpenCommPort

// api-ms-win-core-comm-l1-1-1.dll
#include <windows.h>

HANDLE OpenCommPort(
    DWORD uPortNumber,
    DWORD dwDesiredAccess,
    DWORD dwFlagsAndAttributes
);

<DllImport("api-ms-win-core-comm-l1-1-1.dll", ExactSpelling:=True)>
Public Shared Function OpenCommPort(
    uPortNumber As UInteger,   ' DWORD
    dwDesiredAccess As UInteger,   ' DWORD
    dwFlagsAndAttributes As UInteger   ' DWORD
) As IntPtr
End Function

' uPortNumber : DWORD
' dwDesiredAccess : DWORD
' dwFlagsAndAttributes : DWORD
Declare PtrSafe Function OpenCommPort Lib "api-ms-win-core-comm-l1-1-1" ( _
    ByVal uPortNumber As Long, _
    ByVal dwDesiredAccess As Long, _
    ByVal dwFlagsAndAttributes As Long) As LongPtr
' VBA7前提(PtrSafe)。32bit Office では LongPtr→Long。Integer=16bit / Long=32bit / LongLong=64bit。

import ctypes
from ctypes import wintypes

OpenCommPort = ctypes.windll.LoadLibrary("api-ms-win-core-comm-l1-1-1.dll").OpenCommPort
OpenCommPort.restype = ctypes.c_void_p
OpenCommPort.argtypes = [
    wintypes.DWORD,  # uPortNumber : DWORD
    wintypes.DWORD,  # dwDesiredAccess : DWORD
    wintypes.DWORD,  # dwFlagsAndAttributes : DWORD
]

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('api-ms-win-core-comm-l1-1-1.dll')
OpenCommPort = Fiddle::Function.new(
  lib['OpenCommPort'],
  [
    -Fiddle::TYPE_INT,  # uPortNumber : DWORD
    -Fiddle::TYPE_INT,  # dwDesiredAccess : DWORD
    -Fiddle::TYPE_INT,  # dwFlagsAndAttributes : DWORD
  ],
  Fiddle::TYPE_VOIDP)

#[link(name = "api-ms-win-core-comm-l1-1-1")]
extern "system" {
    fn OpenCommPort(
        uPortNumber: u32,  // DWORD
        dwDesiredAccess: u32,  // DWORD
        dwFlagsAndAttributes: u32  // DWORD
    ) -> *mut core::ffi::c_void;
}
// crates: windows-sys provides ready-made bindings for this API.

$sig = @"
[DllImport("api-ms-win-core-comm-l1-1-1.dll")]
public static extern IntPtr OpenCommPort(uint uPortNumber, uint dwDesiredAccess, uint dwFlagsAndAttributes);
"@
$api = Add-Type -MemberDefinition $sig -Name 'api-ms-win-core-comm-l1-1-1_OpenCommPort' -Namespace Win32 -PassThru
# $api::OpenCommPort(uPortNumber, dwDesiredAccess, dwFlagsAndAttributes)

#uselib "api-ms-win-core-comm-l1-1-1.dll"
#func global OpenCommPort "OpenCommPort" sptr, sptr, sptr
; OpenCommPort uPortNumber, dwDesiredAccess, dwFlagsAndAttributes   ; 戻り値は stat
; uPortNumber : DWORD -> "sptr"
; dwDesiredAccess : DWORD -> "sptr"
; dwFlagsAndAttributes : DWORD -> "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 "api-ms-win-core-comm-l1-1-1.dll"
#cfunc global OpenCommPort "OpenCommPort" int, int, int
; res = OpenCommPort(uPortNumber, dwDesiredAccess, dwFlagsAndAttributes)
; uPortNumber : DWORD -> "int"
; dwDesiredAccess : DWORD -> "int"
; dwFlagsAndAttributes : DWORD -> "int"

; HANDLE OpenCommPort(DWORD uPortNumber, DWORD dwDesiredAccess, DWORD dwFlagsAndAttributes)
#uselib "api-ms-win-core-comm-l1-1-1.dll"
#cfunc global OpenCommPort "OpenCommPort" int, int, int
; res = OpenCommPort(uPortNumber, dwDesiredAccess, dwFlagsAndAttributes)
; uPortNumber : DWORD -> "int"
; dwDesiredAccess : DWORD -> "int"
; dwFlagsAndAttributes : DWORD -> "int"

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

var (
	api_ms_win_core_comm_l1_1_1 = windows.NewLazySystemDLL("api-ms-win-core-comm-l1-1-1.dll")
	procOpenCommPort = api_ms_win_core_comm_l1_1_1.NewProc("OpenCommPort")
)

// uPortNumber (DWORD), dwDesiredAccess (DWORD), dwFlagsAndAttributes (DWORD)
r1, _, err := procOpenCommPort.Call(
	uintptr(uPortNumber),
	uintptr(dwDesiredAccess),
	uintptr(dwFlagsAndAttributes),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // HANDLE

function OpenCommPort(
  uPortNumber: DWORD;   // DWORD
  dwDesiredAccess: DWORD;   // DWORD
  dwFlagsAndAttributes: DWORD   // DWORD
): THandle; stdcall;
  external 'api-ms-win-core-comm-l1-1-1.dll' name 'OpenCommPort';

result := DllCall("api-ms-win-core-comm-l1-1-1\OpenCommPort"
    , "UInt", uPortNumber   ; DWORD
    , "UInt", dwDesiredAccess   ; DWORD
    , "UInt", dwFlagsAndAttributes   ; DWORD
    , "Ptr")   ; return: HANDLE

●OpenCommPort(uPortNumber, dwDesiredAccess, dwFlagsAndAttributes) = DLL("api-ms-win-core-comm-l1-1-1.dll", "void* OpenCommPort(dword, dword, dword)")
# 呼び出し: OpenCommPort(uPortNumber, dwDesiredAccess, dwFlagsAndAttributes)
# uPortNumber : DWORD -> "dword"
# dwDesiredAccess : DWORD -> "dword"
# dwFlagsAndAttributes : DWORD -> "dword"
# 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)。