EvtGetEventMetadataProperty

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

BOOL EvtGetEventMetadataProperty(
    EVT_HANDLE EventMetadata,
    EVT_EVENT_METADATA_PROPERTY_ID PropertyId,
    DWORD Flags,
    DWORD EventMetadataPropertyBufferSize,
    EVT_VARIANT* EventMetadataPropertyBuffer,   // optional
    DWORD* EventMetadataPropertyBufferUsed
);

<DllImport("wevtapi.dll", SetLastError:=True, ExactSpelling:=True)>
Public Shared Function EvtGetEventMetadataProperty(
    EventMetadata As IntPtr,   ' EVT_HANDLE
    PropertyId As Integer,   ' EVT_EVENT_METADATA_PROPERTY_ID
    Flags As UInteger,   ' DWORD
    EventMetadataPropertyBufferSize As UInteger,   ' DWORD
    EventMetadataPropertyBuffer As IntPtr,   ' EVT_VARIANT* optional, out
    <Out> ByRef EventMetadataPropertyBufferUsed As UInteger   ' DWORD* out
) As Boolean
End Function

' EventMetadata : EVT_HANDLE
' PropertyId : EVT_EVENT_METADATA_PROPERTY_ID
' Flags : DWORD
' EventMetadataPropertyBufferSize : DWORD
' EventMetadataPropertyBuffer : EVT_VARIANT* optional, out
' EventMetadataPropertyBufferUsed : DWORD* out
Declare PtrSafe Function EvtGetEventMetadataProperty Lib "wevtapi" ( _
    ByVal EventMetadata As LongPtr, _
    ByVal PropertyId As Long, _
    ByVal Flags As Long, _
    ByVal EventMetadataPropertyBufferSize As Long, _
    ByVal EventMetadataPropertyBuffer As LongPtr, _
    ByRef EventMetadataPropertyBufferUsed 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

EvtGetEventMetadataProperty = ctypes.windll.wevtapi.EvtGetEventMetadataProperty
EvtGetEventMetadataProperty.restype = wintypes.BOOL
EvtGetEventMetadataProperty.argtypes = [
    ctypes.c_ssize_t,  # EventMetadata : EVT_HANDLE
    ctypes.c_int,  # PropertyId : EVT_EVENT_METADATA_PROPERTY_ID
    wintypes.DWORD,  # Flags : DWORD
    wintypes.DWORD,  # EventMetadataPropertyBufferSize : DWORD
    ctypes.c_void_p,  # EventMetadataPropertyBuffer : EVT_VARIANT* optional, out
    ctypes.POINTER(wintypes.DWORD),  # EventMetadataPropertyBufferUsed : DWORD* out
]
# GetLastError: use ctypes.GetLastError() (or ctypes.WinDLL(use_last_error=True))

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('wevtapi.dll')
EvtGetEventMetadataProperty = Fiddle::Function.new(
  lib['EvtGetEventMetadataProperty'],
  [
    Fiddle::TYPE_INTPTR_T,  # EventMetadata : EVT_HANDLE
    Fiddle::TYPE_INT,  # PropertyId : EVT_EVENT_METADATA_PROPERTY_ID
    -Fiddle::TYPE_INT,  # Flags : DWORD
    -Fiddle::TYPE_INT,  # EventMetadataPropertyBufferSize : DWORD
    Fiddle::TYPE_VOIDP,  # EventMetadataPropertyBuffer : EVT_VARIANT* optional, out
    Fiddle::TYPE_VOIDP,  # EventMetadataPropertyBufferUsed : DWORD* out
  ],
  Fiddle::TYPE_INT)

#[link(name = "wevtapi")]
extern "system" {
    fn EvtGetEventMetadataProperty(
        EventMetadata: isize,  // EVT_HANDLE
        PropertyId: i32,  // EVT_EVENT_METADATA_PROPERTY_ID
        Flags: u32,  // DWORD
        EventMetadataPropertyBufferSize: u32,  // DWORD
        EventMetadataPropertyBuffer: *mut EVT_VARIANT,  // EVT_VARIANT* optional, out
        EventMetadataPropertyBufferUsed: *mut u32  // DWORD* out
    ) -> i32;
}
// crates: windows-sys provides ready-made bindings for this API.

$sig = @"
[return: MarshalAs(UnmanagedType.Bool)]
[DllImport("wevtapi.dll", SetLastError = true)]
public static extern bool EvtGetEventMetadataProperty(IntPtr EventMetadata, int PropertyId, uint Flags, uint EventMetadataPropertyBufferSize, IntPtr EventMetadataPropertyBuffer, out uint EventMetadataPropertyBufferUsed);
"@
$api = Add-Type -MemberDefinition $sig -Name 'wevtapi_EvtGetEventMetadataProperty' -Namespace Win32 -PassThru
# $api::EvtGetEventMetadataProperty(EventMetadata, PropertyId, Flags, EventMetadataPropertyBufferSize, EventMetadataPropertyBuffer, EventMetadataPropertyBufferUsed)

#uselib "wevtapi.dll"
#func global EvtGetEventMetadataProperty "EvtGetEventMetadataProperty" sptr, sptr, sptr, sptr, sptr, sptr
; EvtGetEventMetadataProperty EventMetadata, PropertyId, Flags, EventMetadataPropertyBufferSize, varptr(EventMetadataPropertyBuffer), varptr(EventMetadataPropertyBufferUsed)   ; 戻り値は stat
; EventMetadata : EVT_HANDLE -> "sptr"
; PropertyId : EVT_EVENT_METADATA_PROPERTY_ID -> "sptr"
; Flags : DWORD -> "sptr"
; EventMetadataPropertyBufferSize : DWORD -> "sptr"
; EventMetadataPropertyBuffer : EVT_VARIANT* optional, out -> "sptr"
; EventMetadataPropertyBufferUsed : DWORD* 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。

#uselib "wevtapi.dll"
#cfunc global EvtGetEventMetadataProperty "EvtGetEventMetadataProperty" sptr, int, int, int, var, var
; res = EvtGetEventMetadataProperty(EventMetadata, PropertyId, Flags, EventMetadataPropertyBufferSize, EventMetadataPropertyBuffer, EventMetadataPropertyBufferUsed)
; EventMetadata : EVT_HANDLE -> "sptr"
; PropertyId : EVT_EVENT_METADATA_PROPERTY_ID -> "int"
; Flags : DWORD -> "int"
; EventMetadataPropertyBufferSize : DWORD -> "int"
; EventMetadataPropertyBuffer : EVT_VARIANT* optional, out -> "var"
; EventMetadataPropertyBufferUsed : DWORD* out -> "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。

; BOOL EvtGetEventMetadataProperty(EVT_HANDLE EventMetadata, EVT_EVENT_METADATA_PROPERTY_ID PropertyId, DWORD Flags, DWORD EventMetadataPropertyBufferSize, EVT_VARIANT* EventMetadataPropertyBuffer, DWORD* EventMetadataPropertyBufferUsed)
#uselib "wevtapi.dll"
#cfunc global EvtGetEventMetadataProperty "EvtGetEventMetadataProperty" intptr, int, int, int, var, var
; res = EvtGetEventMetadataProperty(EventMetadata, PropertyId, Flags, EventMetadataPropertyBufferSize, EventMetadataPropertyBuffer, EventMetadataPropertyBufferUsed)
; EventMetadata : EVT_HANDLE -> "intptr"
; PropertyId : EVT_EVENT_METADATA_PROPERTY_ID -> "int"
; Flags : DWORD -> "int"
; EventMetadataPropertyBufferSize : DWORD -> "int"
; EventMetadataPropertyBuffer : EVT_VARIANT* optional, out -> "var"
; EventMetadataPropertyBufferUsed : DWORD* out -> "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 (
	wevtapi = windows.NewLazySystemDLL("wevtapi.dll")
	procEvtGetEventMetadataProperty = wevtapi.NewProc("EvtGetEventMetadataProperty")
)

// EventMetadata (EVT_HANDLE), PropertyId (EVT_EVENT_METADATA_PROPERTY_ID), Flags (DWORD), EventMetadataPropertyBufferSize (DWORD), EventMetadataPropertyBuffer (EVT_VARIANT* optional, out), EventMetadataPropertyBufferUsed (DWORD* out)
r1, _, err := procEvtGetEventMetadataProperty.Call(
	uintptr(EventMetadata),
	uintptr(PropertyId),
	uintptr(Flags),
	uintptr(EventMetadataPropertyBufferSize),
	uintptr(EventMetadataPropertyBuffer),
	uintptr(EventMetadataPropertyBufferUsed),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // BOOL

function EvtGetEventMetadataProperty(
  EventMetadata: NativeInt;   // EVT_HANDLE
  PropertyId: Integer;   // EVT_EVENT_METADATA_PROPERTY_ID
  Flags: DWORD;   // DWORD
  EventMetadataPropertyBufferSize: DWORD;   // DWORD
  EventMetadataPropertyBuffer: Pointer;   // EVT_VARIANT* optional, out
  EventMetadataPropertyBufferUsed: Pointer   // DWORD* out
): BOOL; stdcall;
  external 'wevtapi.dll' name 'EvtGetEventMetadataProperty';

result := DllCall("wevtapi\EvtGetEventMetadataProperty"
    , "Ptr", EventMetadata   ; EVT_HANDLE
    , "Int", PropertyId   ; EVT_EVENT_METADATA_PROPERTY_ID
    , "UInt", Flags   ; DWORD
    , "UInt", EventMetadataPropertyBufferSize   ; DWORD
    , "Ptr", EventMetadataPropertyBuffer   ; EVT_VARIANT* optional, out
    , "Ptr", EventMetadataPropertyBufferUsed   ; DWORD* out
    , "Int")   ; return: BOOL

●EvtGetEventMetadataProperty(EventMetadata, PropertyId, Flags, EventMetadataPropertyBufferSize, EventMetadataPropertyBuffer, EventMetadataPropertyBufferUsed) = DLL("wevtapi.dll", "bool EvtGetEventMetadataProperty(int, int, dword, dword, void*, void*)")
# 呼び出し: EvtGetEventMetadataProperty(EventMetadata, PropertyId, Flags, EventMetadataPropertyBufferSize, EventMetadataPropertyBuffer, EventMetadataPropertyBufferUsed)
# EventMetadata : EVT_HANDLE -> "int"
# PropertyId : EVT_EVENT_METADATA_PROPERTY_ID -> "int"
# Flags : DWORD -> "dword"
# EventMetadataPropertyBufferSize : DWORD -> "dword"
# EventMetadataPropertyBuffer : EVT_VARIANT* optional, out -> "void*"
# EventMetadataPropertyBufferUsed : DWORD* 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)。