UnhookWinEvent

// USER32.dll
#include <windows.h>

BOOL UnhookWinEvent(
    HWINEVENTHOOK hWinEventHook
);

<DllImport("USER32.dll", ExactSpelling:=True)>
Public Shared Function UnhookWinEvent(
    hWinEventHook As IntPtr   ' HWINEVENTHOOK
) As Boolean
End Function

' hWinEventHook : HWINEVENTHOOK
Declare PtrSafe Function UnhookWinEvent Lib "user32" ( _
    ByVal hWinEventHook 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

UnhookWinEvent = ctypes.windll.user32.UnhookWinEvent
UnhookWinEvent.restype = wintypes.BOOL
UnhookWinEvent.argtypes = [
    wintypes.HANDLE,  # hWinEventHook : HWINEVENTHOOK
]

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('USER32.dll')
UnhookWinEvent = Fiddle::Function.new(
  lib['UnhookWinEvent'],
  [
    Fiddle::TYPE_VOIDP,  # hWinEventHook : HWINEVENTHOOK
  ],
  Fiddle::TYPE_INT)

#[link(name = "user32")]
extern "system" {
    fn UnhookWinEvent(
        hWinEventHook: *mut core::ffi::c_void  // HWINEVENTHOOK
    ) -> i32;
}
// crates: windows-sys provides ready-made bindings for this API.

$sig = @"
[return: MarshalAs(UnmanagedType.Bool)]
[DllImport("USER32.dll")]
public static extern bool UnhookWinEvent(IntPtr hWinEventHook);
"@
$api = Add-Type -MemberDefinition $sig -Name 'USER32_UnhookWinEvent' -Namespace Win32 -PassThru
# $api::UnhookWinEvent(hWinEventHook)

#uselib "USER32.dll"
#func global UnhookWinEvent "UnhookWinEvent" sptr
; UnhookWinEvent hWinEventHook   ; 戻り値は stat
; hWinEventHook : HWINEVENTHOOK -> "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 "USER32.dll"
#cfunc global UnhookWinEvent "UnhookWinEvent" sptr
; res = UnhookWinEvent(hWinEventHook)
; hWinEventHook : HWINEVENTHOOK -> "sptr"

; BOOL UnhookWinEvent(HWINEVENTHOOK hWinEventHook)
#uselib "USER32.dll"
#cfunc global UnhookWinEvent "UnhookWinEvent" intptr
; res = UnhookWinEvent(hWinEventHook)
; hWinEventHook : HWINEVENTHOOK -> "intptr"

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

var (
	user32 = windows.NewLazySystemDLL("USER32.dll")
	procUnhookWinEvent = user32.NewProc("UnhookWinEvent")
)

// hWinEventHook (HWINEVENTHOOK)
r1, _, err := procUnhookWinEvent.Call(
	uintptr(hWinEventHook),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // BOOL

function UnhookWinEvent(
  hWinEventHook: THandle   // HWINEVENTHOOK
): BOOL; stdcall;
  external 'USER32.dll' name 'UnhookWinEvent';

result := DllCall("USER32\UnhookWinEvent"
    , "Ptr", hWinEventHook   ; HWINEVENTHOOK
    , "Int")   ; return: BOOL

●UnhookWinEvent(hWinEventHook) = DLL("USER32.dll", "bool UnhookWinEvent(void*)")
# 呼び出し: UnhookWinEvent(hWinEventHook)
# hWinEventHook : HWINEVENTHOOK -> "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)。