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TdhGetPropertySize

関数

イベント内の指定プロパティのデータサイズを取得する。

DLLTDH.dll呼出規約winapi対応OSWindows Vista 以降

シグネチャ

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

DWORD TdhGetPropertySize(
    EVENT_RECORD* pEvent,
    DWORD TdhContextCount,
    TDH_CONTEXT* pTdhContext,   // optional
    DWORD PropertyDataCount,
    PROPERTY_DATA_DESCRIPTOR* pPropertyData,
    DWORD* pPropertySize
);

パラメーター

名前	型	方向	説明
pEvent	EVENT_RECORD*	in	プロパティサイズを取得する対象のEVENT_RECORD。
TdhContextCount	DWORD	in	pTdhContext配列の要素数。
pTdhContext	TDH_CONTEXT*	inoptional	デコードに使う追加コンテキスト情報の配列(TDH_CONTEXT)。NULL可。
PropertyDataCount	DWORD	in	pPropertyData配列の要素数。
pPropertyData	PROPERTY_DATA_DESCRIPTOR*	in	対象プロパティを特定するPROPERTY_DATA_DESCRIPTOR配列。
pPropertySize	DWORD*	out	プロパティのサイズ(バイト)を受け取る出力ポインタ。

戻り値の型: DWORD

各言語での呼び出し定義

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

DWORD TdhGetPropertySize(
    EVENT_RECORD* pEvent,
    DWORD TdhContextCount,
    TDH_CONTEXT* pTdhContext,   // optional
    DWORD PropertyDataCount,
    PROPERTY_DATA_DESCRIPTOR* pPropertyData,
    DWORD* pPropertySize
);

[DllImport("TDH.dll", ExactSpelling = true)]
static extern uint TdhGetPropertySize(
    IntPtr pEvent,   // EVENT_RECORD*
    uint TdhContextCount,   // DWORD
    IntPtr pTdhContext,   // TDH_CONTEXT* optional
    uint PropertyDataCount,   // DWORD
    IntPtr pPropertyData,   // PROPERTY_DATA_DESCRIPTOR*
    out uint pPropertySize   // DWORD* out
);

<DllImport("TDH.dll", ExactSpelling:=True)>
Public Shared Function TdhGetPropertySize(
    pEvent As IntPtr,   ' EVENT_RECORD*
    TdhContextCount As UInteger,   ' DWORD
    pTdhContext As IntPtr,   ' TDH_CONTEXT* optional
    PropertyDataCount As UInteger,   ' DWORD
    pPropertyData As IntPtr,   ' PROPERTY_DATA_DESCRIPTOR*
    <Out> ByRef pPropertySize As UInteger   ' DWORD* out
) As UInteger
End Function

' pEvent : EVENT_RECORD*
' TdhContextCount : DWORD
' pTdhContext : TDH_CONTEXT* optional
' PropertyDataCount : DWORD
' pPropertyData : PROPERTY_DATA_DESCRIPTOR*
' pPropertySize : DWORD* out
Declare PtrSafe Function TdhGetPropertySize Lib "tdh" ( _
    ByVal pEvent As LongPtr, _
    ByVal TdhContextCount As Long, _
    ByVal pTdhContext As LongPtr, _
    ByVal PropertyDataCount As Long, _
    ByVal pPropertyData As LongPtr, _
    ByRef pPropertySize 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

TdhGetPropertySize = ctypes.windll.tdh.TdhGetPropertySize
TdhGetPropertySize.restype = wintypes.DWORD
TdhGetPropertySize.argtypes = [
    ctypes.c_void_p,  # pEvent : EVENT_RECORD*
    wintypes.DWORD,  # TdhContextCount : DWORD
    ctypes.c_void_p,  # pTdhContext : TDH_CONTEXT* optional
    wintypes.DWORD,  # PropertyDataCount : DWORD
    ctypes.c_void_p,  # pPropertyData : PROPERTY_DATA_DESCRIPTOR*
    ctypes.POINTER(wintypes.DWORD),  # pPropertySize : DWORD* out
]

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('TDH.dll')
TdhGetPropertySize = Fiddle::Function.new(
  lib['TdhGetPropertySize'],
  [
    Fiddle::TYPE_VOIDP,  # pEvent : EVENT_RECORD*
    -Fiddle::TYPE_INT,  # TdhContextCount : DWORD
    Fiddle::TYPE_VOIDP,  # pTdhContext : TDH_CONTEXT* optional
    -Fiddle::TYPE_INT,  # PropertyDataCount : DWORD
    Fiddle::TYPE_VOIDP,  # pPropertyData : PROPERTY_DATA_DESCRIPTOR*
    Fiddle::TYPE_VOIDP,  # pPropertySize : DWORD* out
  ],
  -Fiddle::TYPE_INT)

#[link(name = "tdh")]
extern "system" {
    fn TdhGetPropertySize(
        pEvent: *mut EVENT_RECORD,  // EVENT_RECORD*
        TdhContextCount: u32,  // DWORD
        pTdhContext: *mut TDH_CONTEXT,  // TDH_CONTEXT* optional
        PropertyDataCount: u32,  // DWORD
        pPropertyData: *mut PROPERTY_DATA_DESCRIPTOR,  // PROPERTY_DATA_DESCRIPTOR*
        pPropertySize: *mut u32  // DWORD* out
    ) -> u32;
}
// crates: windows-sys provides ready-made bindings for this API.

$sig = @"
[DllImport("TDH.dll")]
public static extern uint TdhGetPropertySize(IntPtr pEvent, uint TdhContextCount, IntPtr pTdhContext, uint PropertyDataCount, IntPtr pPropertyData, out uint pPropertySize);
"@
$api = Add-Type -MemberDefinition $sig -Name 'TDH_TdhGetPropertySize' -Namespace Win32 -PassThru
# $api::TdhGetPropertySize(pEvent, TdhContextCount, pTdhContext, PropertyDataCount, pPropertyData, pPropertySize)

#uselib "TDH.dll"
#func global TdhGetPropertySize "TdhGetPropertySize" sptr, sptr, sptr, sptr, sptr, sptr
; TdhGetPropertySize varptr(pEvent), TdhContextCount, varptr(pTdhContext), PropertyDataCount, varptr(pPropertyData), varptr(pPropertySize)   ; 戻り値は stat
; pEvent : EVENT_RECORD* -> "sptr"
; TdhContextCount : DWORD -> "sptr"
; pTdhContext : TDH_CONTEXT* optional -> "sptr"
; PropertyDataCount : DWORD -> "sptr"
; pPropertyData : PROPERTY_DATA_DESCRIPTOR* -> "sptr"
; pPropertySize : 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。

出力引数:

#uselib "TDH.dll"
#cfunc global TdhGetPropertySize "TdhGetPropertySize" var, int, var, int, var, var
; res = TdhGetPropertySize(pEvent, TdhContextCount, pTdhContext, PropertyDataCount, pPropertyData, pPropertySize)
; pEvent : EVENT_RECORD* -> "var"
; TdhContextCount : DWORD -> "int"
; pTdhContext : TDH_CONTEXT* optional -> "var"
; PropertyDataCount : DWORD -> "int"
; pPropertyData : PROPERTY_DATA_DESCRIPTOR* -> "var"
; pPropertySize : 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。#uselib "TDH.dll"
#cfunc global TdhGetPropertySize "TdhGetPropertySize" sptr, int, sptr, int, sptr, sptr
; res = TdhGetPropertySize(varptr(pEvent), TdhContextCount, varptr(pTdhContext), PropertyDataCount, varptr(pPropertyData), varptr(pPropertySize))
; pEvent : EVENT_RECORD* -> "sptr"
; TdhContextCount : DWORD -> "int"
; pTdhContext : TDH_CONTEXT* optional -> "sptr"
; PropertyDataCount : DWORD -> "int"
; pPropertyData : PROPERTY_DATA_DESCRIPTOR* -> "sptr"
; pPropertySize : DWORD* out -> "sptr"
; ※出力/バッファ引数はポインタ方式(token=sptr / 呼び出しは varptr(変数))。

出力引数:

; DWORD TdhGetPropertySize(EVENT_RECORD* pEvent, DWORD TdhContextCount, TDH_CONTEXT* pTdhContext, DWORD PropertyDataCount, PROPERTY_DATA_DESCRIPTOR* pPropertyData, DWORD* pPropertySize)
#uselib "TDH.dll"
#cfunc global TdhGetPropertySize "TdhGetPropertySize" var, int, var, int, var, var
; res = TdhGetPropertySize(pEvent, TdhContextCount, pTdhContext, PropertyDataCount, pPropertyData, pPropertySize)
; pEvent : EVENT_RECORD* -> "var"
; TdhContextCount : DWORD -> "int"
; pTdhContext : TDH_CONTEXT* optional -> "var"
; PropertyDataCount : DWORD -> "int"
; pPropertyData : PROPERTY_DATA_DESCRIPTOR* -> "var"
; pPropertySize : 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。; DWORD TdhGetPropertySize(EVENT_RECORD* pEvent, DWORD TdhContextCount, TDH_CONTEXT* pTdhContext, DWORD PropertyDataCount, PROPERTY_DATA_DESCRIPTOR* pPropertyData, DWORD* pPropertySize)
#uselib "TDH.dll"
#cfunc global TdhGetPropertySize "TdhGetPropertySize" intptr, int, intptr, int, intptr, intptr
; res = TdhGetPropertySize(varptr(pEvent), TdhContextCount, varptr(pTdhContext), PropertyDataCount, varptr(pPropertyData), varptr(pPropertySize))
; pEvent : EVENT_RECORD* -> "intptr"
; TdhContextCount : DWORD -> "int"
; pTdhContext : TDH_CONTEXT* optional -> "intptr"
; PropertyDataCount : DWORD -> "int"
; pPropertyData : PROPERTY_DATA_DESCRIPTOR* -> "intptr"
; pPropertySize : DWORD* out -> "intptr"
; ※出力/バッファ引数はポインタ方式(token=intptr / 呼び出しは varptr(変数))。

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

var (
	tdh = windows.NewLazySystemDLL("TDH.dll")
	procTdhGetPropertySize = tdh.NewProc("TdhGetPropertySize")
)

// pEvent (EVENT_RECORD*), TdhContextCount (DWORD), pTdhContext (TDH_CONTEXT* optional), PropertyDataCount (DWORD), pPropertyData (PROPERTY_DATA_DESCRIPTOR*), pPropertySize (DWORD* out)
r1, _, err := procTdhGetPropertySize.Call(
	uintptr(pEvent),
	uintptr(TdhContextCount),
	uintptr(pTdhContext),
	uintptr(PropertyDataCount),
	uintptr(pPropertyData),
	uintptr(pPropertySize),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // DWORD

function TdhGetPropertySize(
  pEvent: Pointer;   // EVENT_RECORD*
  TdhContextCount: DWORD;   // DWORD
  pTdhContext: Pointer;   // TDH_CONTEXT* optional
  PropertyDataCount: DWORD;   // DWORD
  pPropertyData: Pointer;   // PROPERTY_DATA_DESCRIPTOR*
  pPropertySize: Pointer   // DWORD* out
): DWORD; stdcall;
  external 'TDH.dll' name 'TdhGetPropertySize';

result := DllCall("TDH\TdhGetPropertySize"
    , "Ptr", pEvent   ; EVENT_RECORD*
    , "UInt", TdhContextCount   ; DWORD
    , "Ptr", pTdhContext   ; TDH_CONTEXT* optional
    , "UInt", PropertyDataCount   ; DWORD
    , "Ptr", pPropertyData   ; PROPERTY_DATA_DESCRIPTOR*
    , "Ptr", pPropertySize   ; DWORD* out
    , "UInt")   ; return: DWORD

●TdhGetPropertySize(pEvent, TdhContextCount, pTdhContext, PropertyDataCount, pPropertyData, pPropertySize) = DLL("TDH.dll", "dword TdhGetPropertySize(void*, dword, void*, dword, void*, void*)")
# 呼び出し: TdhGetPropertySize(pEvent, TdhContextCount, pTdhContext, PropertyDataCount, pPropertyData, pPropertySize)
# pEvent : EVENT_RECORD* -> "void*"
# TdhContextCount : DWORD -> "dword"
# pTdhContext : TDH_CONTEXT* optional -> "void*"
# PropertyDataCount : DWORD -> "dword"
# pPropertyData : PROPERTY_DATA_DESCRIPTOR* -> "void*"
# pPropertySize : 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)。