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TdhEnumerateProvidersForDecodingSource

関数

デコードソース種別でフィルターしてプロバイダーを列挙する。

DLLtdh.dll呼出規約winapi

シグネチャ

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

DWORD TdhEnumerateProvidersForDecodingSource(
    DECODING_SOURCE filter,
    PROVIDER_ENUMERATION_INFO* buffer,   // optional
    DWORD bufferSize,
    DWORD* bufferRequired
);

パラメーター

名前	型	方向	説明
filter	DECODING_SOURCE	in	列挙対象を絞り込むデコードソース種別(DECODING_SOURCE)。
buffer	PROVIDER_ENUMERATION_INFO*	outoptional	列挙結果を受け取るPROVIDER_ENUMERATION_INFO構造体。
bufferSize	DWORD	in	出力バッファのサイズ(バイト)。
bufferRequired	DWORD*	out	必要なバッファサイズ(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 TdhEnumerateProvidersForDecodingSource(
    DECODING_SOURCE filter,
    PROVIDER_ENUMERATION_INFO* buffer,   // optional
    DWORD bufferSize,
    DWORD* bufferRequired
);

[DllImport("tdh.dll", ExactSpelling = true)]
static extern uint TdhEnumerateProvidersForDecodingSource(
    int filter,   // DECODING_SOURCE
    IntPtr buffer,   // PROVIDER_ENUMERATION_INFO* optional, out
    uint bufferSize,   // DWORD
    out uint bufferRequired   // DWORD* out
);

<DllImport("tdh.dll", ExactSpelling:=True)>
Public Shared Function TdhEnumerateProvidersForDecodingSource(
    filter As Integer,   ' DECODING_SOURCE
    buffer As IntPtr,   ' PROVIDER_ENUMERATION_INFO* optional, out
    bufferSize As UInteger,   ' DWORD
    <Out> ByRef bufferRequired As UInteger   ' DWORD* out
) As UInteger
End Function

' filter : DECODING_SOURCE
' buffer : PROVIDER_ENUMERATION_INFO* optional, out
' bufferSize : DWORD
' bufferRequired : DWORD* out
Declare PtrSafe Function TdhEnumerateProvidersForDecodingSource Lib "tdh" ( _
    ByVal filter As Long, _
    ByVal buffer As LongPtr, _
    ByVal bufferSize As Long, _
    ByRef bufferRequired 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

TdhEnumerateProvidersForDecodingSource = ctypes.windll.tdh.TdhEnumerateProvidersForDecodingSource
TdhEnumerateProvidersForDecodingSource.restype = wintypes.DWORD
TdhEnumerateProvidersForDecodingSource.argtypes = [
    ctypes.c_int,  # filter : DECODING_SOURCE
    ctypes.c_void_p,  # buffer : PROVIDER_ENUMERATION_INFO* optional, out
    wintypes.DWORD,  # bufferSize : DWORD
    ctypes.POINTER(wintypes.DWORD),  # bufferRequired : DWORD* out
]

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('tdh.dll')
TdhEnumerateProvidersForDecodingSource = Fiddle::Function.new(
  lib['TdhEnumerateProvidersForDecodingSource'],
  [
    Fiddle::TYPE_INT,  # filter : DECODING_SOURCE
    Fiddle::TYPE_VOIDP,  # buffer : PROVIDER_ENUMERATION_INFO* optional, out
    -Fiddle::TYPE_INT,  # bufferSize : DWORD
    Fiddle::TYPE_VOIDP,  # bufferRequired : DWORD* out
  ],
  -Fiddle::TYPE_INT)

#[link(name = "tdh")]
extern "system" {
    fn TdhEnumerateProvidersForDecodingSource(
        filter: i32,  // DECODING_SOURCE
        buffer: *mut PROVIDER_ENUMERATION_INFO,  // PROVIDER_ENUMERATION_INFO* optional, out
        bufferSize: u32,  // DWORD
        bufferRequired: *mut u32  // DWORD* out
    ) -> u32;
}
// crates: windows-sys provides ready-made bindings for this API.

$sig = @"
[DllImport("tdh.dll")]
public static extern uint TdhEnumerateProvidersForDecodingSource(int filter, IntPtr buffer, uint bufferSize, out uint bufferRequired);
"@
$api = Add-Type -MemberDefinition $sig -Name 'tdh_TdhEnumerateProvidersForDecodingSource' -Namespace Win32 -PassThru
# $api::TdhEnumerateProvidersForDecodingSource(filter, buffer, bufferSize, bufferRequired)

#uselib "tdh.dll"
#func global TdhEnumerateProvidersForDecodingSource "TdhEnumerateProvidersForDecodingSource" sptr, sptr, sptr, sptr
; TdhEnumerateProvidersForDecodingSource filter, varptr(buffer), bufferSize, varptr(bufferRequired)   ; 戻り値は stat
; filter : DECODING_SOURCE -> "sptr"
; buffer : PROVIDER_ENUMERATION_INFO* optional, out -> "sptr"
; bufferSize : DWORD -> "sptr"
; bufferRequired : 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 TdhEnumerateProvidersForDecodingSource "TdhEnumerateProvidersForDecodingSource" int, var, int, var
; res = TdhEnumerateProvidersForDecodingSource(filter, buffer, bufferSize, bufferRequired)
; filter : DECODING_SOURCE -> "int"
; buffer : PROVIDER_ENUMERATION_INFO* optional, out -> "var"
; bufferSize : DWORD -> "int"
; bufferRequired : 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 TdhEnumerateProvidersForDecodingSource "TdhEnumerateProvidersForDecodingSource" int, sptr, int, sptr
; res = TdhEnumerateProvidersForDecodingSource(filter, varptr(buffer), bufferSize, varptr(bufferRequired))
; filter : DECODING_SOURCE -> "int"
; buffer : PROVIDER_ENUMERATION_INFO* optional, out -> "sptr"
; bufferSize : DWORD -> "int"
; bufferRequired : 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 TdhEnumerateProvidersForDecodingSource(DECODING_SOURCE filter, PROVIDER_ENUMERATION_INFO* buffer, DWORD bufferSize, DWORD* bufferRequired)
#uselib "tdh.dll"
#cfunc global TdhEnumerateProvidersForDecodingSource "TdhEnumerateProvidersForDecodingSource" int, var, int, var
; res = TdhEnumerateProvidersForDecodingSource(filter, buffer, bufferSize, bufferRequired)
; filter : DECODING_SOURCE -> "int"
; buffer : PROVIDER_ENUMERATION_INFO* optional, out -> "var"
; bufferSize : DWORD -> "int"
; bufferRequired : 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 TdhEnumerateProvidersForDecodingSource(DECODING_SOURCE filter, PROVIDER_ENUMERATION_INFO* buffer, DWORD bufferSize, DWORD* bufferRequired)
#uselib "tdh.dll"
#cfunc global TdhEnumerateProvidersForDecodingSource "TdhEnumerateProvidersForDecodingSource" int, intptr, int, intptr
; res = TdhEnumerateProvidersForDecodingSource(filter, varptr(buffer), bufferSize, varptr(bufferRequired))
; filter : DECODING_SOURCE -> "int"
; buffer : PROVIDER_ENUMERATION_INFO* optional, out -> "intptr"
; bufferSize : DWORD -> "int"
; bufferRequired : 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")
	procTdhEnumerateProvidersForDecodingSource = tdh.NewProc("TdhEnumerateProvidersForDecodingSource")
)

// filter (DECODING_SOURCE), buffer (PROVIDER_ENUMERATION_INFO* optional, out), bufferSize (DWORD), bufferRequired (DWORD* out)
r1, _, err := procTdhEnumerateProvidersForDecodingSource.Call(
	uintptr(filter),
	uintptr(buffer),
	uintptr(bufferSize),
	uintptr(bufferRequired),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // DWORD

function TdhEnumerateProvidersForDecodingSource(
  filter: Integer;   // DECODING_SOURCE
  buffer: Pointer;   // PROVIDER_ENUMERATION_INFO* optional, out
  bufferSize: DWORD;   // DWORD
  bufferRequired: Pointer   // DWORD* out
): DWORD; stdcall;
  external 'tdh.dll' name 'TdhEnumerateProvidersForDecodingSource';

result := DllCall("tdh\TdhEnumerateProvidersForDecodingSource"
    , "Int", filter   ; DECODING_SOURCE
    , "Ptr", buffer   ; PROVIDER_ENUMERATION_INFO* optional, out
    , "UInt", bufferSize   ; DWORD
    , "Ptr", bufferRequired   ; DWORD* out
    , "UInt")   ; return: DWORD

●TdhEnumerateProvidersForDecodingSource(filter, buffer, bufferSize, bufferRequired) = DLL("tdh.dll", "dword TdhEnumerateProvidersForDecodingSource(int, void*, dword, void*)")
# 呼び出し: TdhEnumerateProvidersForDecodingSource(filter, buffer, bufferSize, bufferRequired)
# filter : DECODING_SOURCE -> "int"
# buffer : PROVIDER_ENUMERATION_INFO* optional, out -> "void*"
# bufferSize : DWORD -> "dword"
# bufferRequired : 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)。