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DrtGetEventDataSize

関数

DRTイベントデータに必要なバッファサイズを取得する。

DLLdrt.dll呼出規約winapi対応OSWindows 7 以降

シグネチャ

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

HRESULT DrtGetEventDataSize(
    void* hDrt,
    DWORD* pulEventDataLen
);

パラメーター

名前	型	方向
hDrt	void*	in
pulEventDataLen	DWORD*	out

戻り値の型: HRESULT

各言語での呼び出し定義

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

HRESULT DrtGetEventDataSize(
    void* hDrt,
    DWORD* pulEventDataLen
);

[DllImport("drt.dll", ExactSpelling = true)]
static extern int DrtGetEventDataSize(
    IntPtr hDrt,   // void*
    out uint pulEventDataLen   // DWORD* out
);

<DllImport("drt.dll", ExactSpelling:=True)>
Public Shared Function DrtGetEventDataSize(
    hDrt As IntPtr,   ' void*
    <Out> ByRef pulEventDataLen As UInteger   ' DWORD* out
) As Integer
End Function

' hDrt : void*
' pulEventDataLen : DWORD* out
Declare PtrSafe Function DrtGetEventDataSize Lib "drt" ( _
    ByVal hDrt As LongPtr, _
    ByRef pulEventDataLen 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

DrtGetEventDataSize = ctypes.windll.drt.DrtGetEventDataSize
DrtGetEventDataSize.restype = ctypes.c_int
DrtGetEventDataSize.argtypes = [
    ctypes.POINTER(None),  # hDrt : void*
    ctypes.POINTER(wintypes.DWORD),  # pulEventDataLen : DWORD* out
]

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('drt.dll')
DrtGetEventDataSize = Fiddle::Function.new(
  lib['DrtGetEventDataSize'],
  [
    Fiddle::TYPE_VOIDP,  # hDrt : void*
    Fiddle::TYPE_VOIDP,  # pulEventDataLen : DWORD* out
  ],
  Fiddle::TYPE_INT)

#[link(name = "drt")]
extern "system" {
    fn DrtGetEventDataSize(
        hDrt: *mut (),  // void*
        pulEventDataLen: *mut u32  // DWORD* out
    ) -> i32;
}
// crates: windows-sys provides ready-made bindings for this API.

$sig = @"
[DllImport("drt.dll")]
public static extern int DrtGetEventDataSize(IntPtr hDrt, out uint pulEventDataLen);
"@
$api = Add-Type -MemberDefinition $sig -Name 'drt_DrtGetEventDataSize' -Namespace Win32 -PassThru
# $api::DrtGetEventDataSize(hDrt, pulEventDataLen)

#uselib "drt.dll"
#func global DrtGetEventDataSize "DrtGetEventDataSize" sptr, sptr
; DrtGetEventDataSize hDrt, varptr(pulEventDataLen)   ; 戻り値は stat
; hDrt : void* -> "sptr"
; pulEventDataLen : 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 "drt.dll"
#cfunc global DrtGetEventDataSize "DrtGetEventDataSize" sptr, var
; res = DrtGetEventDataSize(hDrt, pulEventDataLen)
; hDrt : void* -> "sptr"
; pulEventDataLen : 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 "drt.dll"
#cfunc global DrtGetEventDataSize "DrtGetEventDataSize" sptr, sptr
; res = DrtGetEventDataSize(hDrt, varptr(pulEventDataLen))
; hDrt : void* -> "sptr"
; pulEventDataLen : 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:

; HRESULT DrtGetEventDataSize(void* hDrt, DWORD* pulEventDataLen)
#uselib "drt.dll"
#cfunc global DrtGetEventDataSize "DrtGetEventDataSize" intptr, var
; res = DrtGetEventDataSize(hDrt, pulEventDataLen)
; hDrt : void* -> "intptr"
; pulEventDataLen : 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。; HRESULT DrtGetEventDataSize(void* hDrt, DWORD* pulEventDataLen)
#uselib "drt.dll"
#cfunc global DrtGetEventDataSize "DrtGetEventDataSize" intptr, intptr
; res = DrtGetEventDataSize(hDrt, varptr(pulEventDataLen))
; hDrt : void* -> "intptr"
; pulEventDataLen : 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 (
	drt = windows.NewLazySystemDLL("drt.dll")
	procDrtGetEventDataSize = drt.NewProc("DrtGetEventDataSize")
)

// hDrt (void*), pulEventDataLen (DWORD* out)
r1, _, err := procDrtGetEventDataSize.Call(
	uintptr(hDrt),
	uintptr(pulEventDataLen),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // HRESULT

function DrtGetEventDataSize(
  hDrt: Pointer;   // void*
  pulEventDataLen: Pointer   // DWORD* out
): Integer; stdcall;
  external 'drt.dll' name 'DrtGetEventDataSize';

result := DllCall("drt\DrtGetEventDataSize"
    , "Ptr", hDrt   ; void*
    , "Ptr", pulEventDataLen   ; DWORD* out
    , "Int")   ; return: HRESULT

●DrtGetEventDataSize(hDrt, pulEventDataLen) = DLL("drt.dll", "int DrtGetEventDataSize(void*, void*)")
# 呼び出し: DrtGetEventDataSize(hDrt, pulEventDataLen)
# hDrt : void* -> "void*"
# pulEventDataLen : 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)。