WSACloseEvent

// WS2_32.dll
#include <windows.h>

BOOL WSACloseEvent(
    WSAEVENT hEvent
);

<DllImport("WS2_32.dll", SetLastError:=True, ExactSpelling:=True)>
Public Shared Function WSACloseEvent(
    hEvent As IntPtr   ' WSAEVENT
) As Boolean
End Function

' hEvent : WSAEVENT
Declare PtrSafe Function WSACloseEvent Lib "ws2_32" ( _
    ByVal hEvent 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

WSACloseEvent = ctypes.windll.ws2_32.WSACloseEvent
WSACloseEvent.restype = wintypes.BOOL
WSACloseEvent.argtypes = [
    ctypes.c_ssize_t,  # hEvent : WSAEVENT
]
# GetLastError: use ctypes.GetLastError() (or ctypes.WinDLL(use_last_error=True))

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('WS2_32.dll')
WSACloseEvent = Fiddle::Function.new(
  lib['WSACloseEvent'],
  [
    Fiddle::TYPE_INTPTR_T,  # hEvent : WSAEVENT
  ],
  Fiddle::TYPE_INT)

#[link(name = "ws2_32")]
extern "system" {
    fn WSACloseEvent(
        hEvent: isize  // WSAEVENT
    ) -> i32;
}
// crates: windows-sys provides ready-made bindings for this API.

$sig = @"
[return: MarshalAs(UnmanagedType.Bool)]
[DllImport("WS2_32.dll", SetLastError = true)]
public static extern bool WSACloseEvent(IntPtr hEvent);
"@
$api = Add-Type -MemberDefinition $sig -Name 'WS2_32_WSACloseEvent' -Namespace Win32 -PassThru
# $api::WSACloseEvent(hEvent)

#uselib "WS2_32.dll"
#func global WSACloseEvent "WSACloseEvent" sptr
; WSACloseEvent hEvent   ; 戻り値は stat
; hEvent : WSAEVENT -> "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 "WS2_32.dll"
#cfunc global WSACloseEvent "WSACloseEvent" sptr
; res = WSACloseEvent(hEvent)
; hEvent : WSAEVENT -> "sptr"

; BOOL WSACloseEvent(WSAEVENT hEvent)
#uselib "WS2_32.dll"
#cfunc global WSACloseEvent "WSACloseEvent" intptr
; res = WSACloseEvent(hEvent)
; hEvent : WSAEVENT -> "intptr"

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

var (
	ws2_32 = windows.NewLazySystemDLL("WS2_32.dll")
	procWSACloseEvent = ws2_32.NewProc("WSACloseEvent")
)

// hEvent (WSAEVENT)
r1, _, err := procWSACloseEvent.Call(
	uintptr(hEvent),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // BOOL

function WSACloseEvent(
  hEvent: NativeInt   // WSAEVENT
): BOOL; stdcall;
  external 'WS2_32.dll' name 'WSACloseEvent';

result := DllCall("WS2_32\WSACloseEvent"
    , "Ptr", hEvent   ; WSAEVENT
    , "Int")   ; return: BOOL

●WSACloseEvent(hEvent) = DLL("WS2_32.dll", "bool WSACloseEvent(int)")
# 呼び出し: WSACloseEvent(hEvent)
# hEvent : WSAEVENT -> "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)。