Win32 API 日本語リファレンス
ホームSystem.Diagnostics.Etw › EventEnabled

EventEnabled

関数
指定イベント記述子のイベントが有効かどうかを判定する。
DLLADVAPI32.dll呼出規約winapi対応OSWindows Vista 以降

シグネチャ

// ADVAPI32.dll
#include <windows.h>

BOOLEAN EventEnabled(
    REGHANDLE RegHandle,
    const EVENT_DESCRIPTOR* EventDescriptor
);

パラメーター

名前方向
RegHandleREGHANDLEin
EventDescriptorEVENT_DESCRIPTOR*in

戻り値の型: BOOLEAN

各言語での呼び出し定義

// ADVAPI32.dll
#include <windows.h>

BOOLEAN EventEnabled(
    REGHANDLE RegHandle,
    const EVENT_DESCRIPTOR* EventDescriptor
);
[DllImport("ADVAPI32.dll", ExactSpelling = true)]
static extern byte EventEnabled(
    long RegHandle,   // REGHANDLE
    IntPtr EventDescriptor   // EVENT_DESCRIPTOR*
);
<DllImport("ADVAPI32.dll", ExactSpelling:=True)>
Public Shared Function EventEnabled(
    RegHandle As Long,   ' REGHANDLE
    EventDescriptor As IntPtr   ' EVENT_DESCRIPTOR*
) As Byte
End Function
' RegHandle : REGHANDLE
' EventDescriptor : EVENT_DESCRIPTOR*
Declare PtrSafe Function EventEnabled Lib "advapi32" ( _
    ByVal RegHandle As LongLong, _
    ByVal EventDescriptor As LongPtr) As Byte
' VBA7前提(PtrSafe)。32bit Office では LongPtr→Long。Integer=16bit / Long=32bit / LongLong=64bit。
import ctypes
from ctypes import wintypes

EventEnabled = ctypes.windll.advapi32.EventEnabled
EventEnabled.restype = ctypes.c_byte
EventEnabled.argtypes = [
    ctypes.c_longlong,  # RegHandle : REGHANDLE
    ctypes.c_void_p,  # EventDescriptor : EVENT_DESCRIPTOR*
]
require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('ADVAPI32.dll')
EventEnabled = Fiddle::Function.new(
  lib['EventEnabled'],
  [
    Fiddle::TYPE_LONG_LONG,  # RegHandle : REGHANDLE
    Fiddle::TYPE_VOIDP,  # EventDescriptor : EVENT_DESCRIPTOR*
  ],
  Fiddle::TYPE_CHAR)
#[link(name = "advapi32")]
extern "system" {
    fn EventEnabled(
        RegHandle: i64,  // REGHANDLE
        EventDescriptor: *const EVENT_DESCRIPTOR  // EVENT_DESCRIPTOR*
    ) -> u8;
}
// crates: windows-sys provides ready-made bindings for this API.
$sig = @"
[DllImport("ADVAPI32.dll")]
public static extern byte EventEnabled(long RegHandle, IntPtr EventDescriptor);
"@
$api = Add-Type -MemberDefinition $sig -Name 'ADVAPI32_EventEnabled' -Namespace Win32 -PassThru
# $api::EventEnabled(RegHandle, EventDescriptor)
#uselib "ADVAPI32.dll"
#func global EventEnabled "EventEnabled" sptr, sptr
; EventEnabled RegHandle, varptr(EventDescriptor)   ; 戻り値は stat
; RegHandle : REGHANDLE -> "sptr"
; EventDescriptor : EVENT_DESCRIPTOR* -> "sptr"
; ※HSP3.7は int64 引数(64bit値渡し)に非対応です。
; ※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。
出力引数:
#uselib "ADVAPI32.dll"
#cfunc global EventEnabled "EventEnabled" int64, var
; res = EventEnabled(RegHandle, EventDescriptor)
; RegHandle : REGHANDLE -> "int64"
; EventDescriptor : EVENT_DESCRIPTOR* -> "var"
; ※出力/バッファ引数は var 方式(変数を直接渡す)。varptr 方式にも切替可。
; ※int64 引数の DLL 値渡しは x64 ランタイム(hsp3_64)のみ対応(x86 は未対応)。
出力引数:
; BOOLEAN EventEnabled(REGHANDLE RegHandle, EVENT_DESCRIPTOR* EventDescriptor)
#uselib "ADVAPI32.dll"
#cfunc global EventEnabled "EventEnabled" int64, var
; res = EventEnabled(RegHandle, EventDescriptor)
; RegHandle : REGHANDLE -> "int64"
; EventDescriptor : EVENT_DESCRIPTOR* -> "var"
; ※出力/バッファ引数は var 方式(変数を直接渡す)。varptr 方式にも切替可。
import (
	"golang.org/x/sys/windows"
	"unsafe"
)

var (
	advapi32 = windows.NewLazySystemDLL("ADVAPI32.dll")
	procEventEnabled = advapi32.NewProc("EventEnabled")
)

// RegHandle (REGHANDLE), EventDescriptor (EVENT_DESCRIPTOR*)
r1, _, err := procEventEnabled.Call(
	uintptr(RegHandle),
	uintptr(EventDescriptor),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // BOOLEAN
function EventEnabled(
  RegHandle: Int64;   // REGHANDLE
  EventDescriptor: Pointer   // EVENT_DESCRIPTOR*
): ByteBool; stdcall;
  external 'ADVAPI32.dll' name 'EventEnabled';
result := DllCall("ADVAPI32\EventEnabled"
    , "Int64", RegHandle   ; REGHANDLE
    , "Ptr", EventDescriptor   ; EVENT_DESCRIPTOR*
    , "Char")   ; return: BOOLEAN
●EventEnabled(RegHandle, EventDescriptor) = DLL("ADVAPI32.dll", "byte EventEnabled(int64, void*)")
# 呼び出し: EventEnabled(RegHandle, EventDescriptor)
# RegHandle : REGHANDLE -> "int64"
# EventDescriptor : EVENT_DESCRIPTOR* -> "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)。