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TdhEnumerateProviderFilters

関数

プロバイダーで利用可能なフィルター情報を列挙する。

DLLtdh.dll呼出規約winapi対応OSWindows 7 以降

シグネチャ

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

DWORD TdhEnumerateProviderFilters(
    GUID* Guid,
    DWORD TdhContextCount,
    TDH_CONTEXT* TdhContext,   // optional
    DWORD* FilterCount,
    PROVIDER_FILTER_INFO** Buffer,   // optional
    DWORD* BufferSize
);

パラメーター

名前	型	方向	説明
Guid	GUID*	in	フィルタを列挙する対象プロバイダのGUID。
TdhContextCount	DWORD	in	TdhContext配列の要素数。
TdhContext	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。
FilterCount	DWORD*	out	返されたフィルタ数を受け取る出力ポインタ。
Buffer	PROVIDER_FILTER_INFO**	outoptional	取得したフィルタ情報の配列へのポインタを受け取る出力。
BufferSize	DWORD*	inout	返されたバッファのサイズ(バイト)を受け取るポインタ。

戻り値の型: DWORD

各言語での呼び出し定義

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

DWORD TdhEnumerateProviderFilters(
    GUID* Guid,
    DWORD TdhContextCount,
    TDH_CONTEXT* TdhContext,   // optional
    DWORD* FilterCount,
    PROVIDER_FILTER_INFO** Buffer,   // optional
    DWORD* BufferSize
);

[DllImport("tdh.dll", ExactSpelling = true)]
static extern uint TdhEnumerateProviderFilters(
    ref Guid Guid,   // GUID*
    uint TdhContextCount,   // DWORD
    IntPtr TdhContext,   // TDH_CONTEXT* optional
    out uint FilterCount,   // DWORD* out
    IntPtr Buffer,   // PROVIDER_FILTER_INFO** optional, out
    ref uint BufferSize   // DWORD* in/out
);

<DllImport("tdh.dll", ExactSpelling:=True)>
Public Shared Function TdhEnumerateProviderFilters(
    ByRef Guid As Guid,   ' GUID*
    TdhContextCount As UInteger,   ' DWORD
    TdhContext As IntPtr,   ' TDH_CONTEXT* optional
    <Out> ByRef FilterCount As UInteger,   ' DWORD* out
    Buffer As IntPtr,   ' PROVIDER_FILTER_INFO** optional, out
    ByRef BufferSize As UInteger   ' DWORD* in/out
) As UInteger
End Function

' Guid : GUID*
' TdhContextCount : DWORD
' TdhContext : TDH_CONTEXT* optional
' FilterCount : DWORD* out
' Buffer : PROVIDER_FILTER_INFO** optional, out
' BufferSize : DWORD* in/out
Declare PtrSafe Function TdhEnumerateProviderFilters Lib "tdh" ( _
    ByVal Guid As LongPtr, _
    ByVal TdhContextCount As Long, _
    ByVal TdhContext As LongPtr, _
    ByRef FilterCount As Long, _
    ByVal Buffer As LongPtr, _
    ByRef BufferSize 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

TdhEnumerateProviderFilters = ctypes.windll.tdh.TdhEnumerateProviderFilters
TdhEnumerateProviderFilters.restype = wintypes.DWORD
TdhEnumerateProviderFilters.argtypes = [
    ctypes.c_void_p,  # Guid : GUID*
    wintypes.DWORD,  # TdhContextCount : DWORD
    ctypes.c_void_p,  # TdhContext : TDH_CONTEXT* optional
    ctypes.POINTER(wintypes.DWORD),  # FilterCount : DWORD* out
    ctypes.c_void_p,  # Buffer : PROVIDER_FILTER_INFO** optional, out
    ctypes.POINTER(wintypes.DWORD),  # BufferSize : DWORD* in/out
]

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('tdh.dll')
TdhEnumerateProviderFilters = Fiddle::Function.new(
  lib['TdhEnumerateProviderFilters'],
  [
    Fiddle::TYPE_VOIDP,  # Guid : GUID*
    -Fiddle::TYPE_INT,  # TdhContextCount : DWORD
    Fiddle::TYPE_VOIDP,  # TdhContext : TDH_CONTEXT* optional
    Fiddle::TYPE_VOIDP,  # FilterCount : DWORD* out
    Fiddle::TYPE_VOIDP,  # Buffer : PROVIDER_FILTER_INFO** optional, out
    Fiddle::TYPE_VOIDP,  # BufferSize : DWORD* in/out
  ],
  -Fiddle::TYPE_INT)

#[link(name = "tdh")]
extern "system" {
    fn TdhEnumerateProviderFilters(
        Guid: *mut GUID,  // GUID*
        TdhContextCount: u32,  // DWORD
        TdhContext: *mut TDH_CONTEXT,  // TDH_CONTEXT* optional
        FilterCount: *mut u32,  // DWORD* out
        Buffer: *mut *mut PROVIDER_FILTER_INFO,  // PROVIDER_FILTER_INFO** optional, out
        BufferSize: *mut u32  // DWORD* in/out
    ) -> u32;
}
// crates: windows-sys provides ready-made bindings for this API.

$sig = @"
[DllImport("tdh.dll")]
public static extern uint TdhEnumerateProviderFilters(ref Guid Guid, uint TdhContextCount, IntPtr TdhContext, out uint FilterCount, IntPtr Buffer, ref uint BufferSize);
"@
$api = Add-Type -MemberDefinition $sig -Name 'tdh_TdhEnumerateProviderFilters' -Namespace Win32 -PassThru
# $api::TdhEnumerateProviderFilters(Guid, TdhContextCount, TdhContext, FilterCount, Buffer, BufferSize)

#uselib "tdh.dll"
#func global TdhEnumerateProviderFilters "TdhEnumerateProviderFilters" sptr, sptr, sptr, sptr, sptr, sptr
; TdhEnumerateProviderFilters varptr(Guid), TdhContextCount, varptr(TdhContext), varptr(FilterCount), varptr(Buffer), varptr(BufferSize)   ; 戻り値は stat
; Guid : GUID* -> "sptr"
; TdhContextCount : DWORD -> "sptr"
; TdhContext : TDH_CONTEXT* optional -> "sptr"
; FilterCount : DWORD* out -> "sptr"
; Buffer : PROVIDER_FILTER_INFO** optional, out -> "sptr"
; BufferSize : DWORD* in/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 TdhEnumerateProviderFilters "TdhEnumerateProviderFilters" var, int, var, var, var, var
; res = TdhEnumerateProviderFilters(Guid, TdhContextCount, TdhContext, FilterCount, Buffer, BufferSize)
; Guid : GUID* -> "var"
; TdhContextCount : DWORD -> "int"
; TdhContext : TDH_CONTEXT* optional -> "var"
; FilterCount : DWORD* out -> "var"
; Buffer : PROVIDER_FILTER_INFO** optional, out -> "var"
; BufferSize : DWORD* in/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 TdhEnumerateProviderFilters "TdhEnumerateProviderFilters" sptr, int, sptr, sptr, sptr, sptr
; res = TdhEnumerateProviderFilters(varptr(Guid), TdhContextCount, varptr(TdhContext), varptr(FilterCount), varptr(Buffer), varptr(BufferSize))
; Guid : GUID* -> "sptr"
; TdhContextCount : DWORD -> "int"
; TdhContext : TDH_CONTEXT* optional -> "sptr"
; FilterCount : DWORD* out -> "sptr"
; Buffer : PROVIDER_FILTER_INFO** optional, out -> "sptr"
; BufferSize : DWORD* in/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 TdhEnumerateProviderFilters(GUID* Guid, DWORD TdhContextCount, TDH_CONTEXT* TdhContext, DWORD* FilterCount, PROVIDER_FILTER_INFO** Buffer, DWORD* BufferSize)
#uselib "tdh.dll"
#cfunc global TdhEnumerateProviderFilters "TdhEnumerateProviderFilters" var, int, var, var, var, var
; res = TdhEnumerateProviderFilters(Guid, TdhContextCount, TdhContext, FilterCount, Buffer, BufferSize)
; Guid : GUID* -> "var"
; TdhContextCount : DWORD -> "int"
; TdhContext : TDH_CONTEXT* optional -> "var"
; FilterCount : DWORD* out -> "var"
; Buffer : PROVIDER_FILTER_INFO** optional, out -> "var"
; BufferSize : DWORD* in/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 TdhEnumerateProviderFilters(GUID* Guid, DWORD TdhContextCount, TDH_CONTEXT* TdhContext, DWORD* FilterCount, PROVIDER_FILTER_INFO** Buffer, DWORD* BufferSize)
#uselib "tdh.dll"
#cfunc global TdhEnumerateProviderFilters "TdhEnumerateProviderFilters" intptr, int, intptr, intptr, intptr, intptr
; res = TdhEnumerateProviderFilters(varptr(Guid), TdhContextCount, varptr(TdhContext), varptr(FilterCount), varptr(Buffer), varptr(BufferSize))
; Guid : GUID* -> "intptr"
; TdhContextCount : DWORD -> "int"
; TdhContext : TDH_CONTEXT* optional -> "intptr"
; FilterCount : DWORD* out -> "intptr"
; Buffer : PROVIDER_FILTER_INFO** optional, out -> "intptr"
; BufferSize : DWORD* in/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")
	procTdhEnumerateProviderFilters = tdh.NewProc("TdhEnumerateProviderFilters")
)

// Guid (GUID*), TdhContextCount (DWORD), TdhContext (TDH_CONTEXT* optional), FilterCount (DWORD* out), Buffer (PROVIDER_FILTER_INFO** optional, out), BufferSize (DWORD* in/out)
r1, _, err := procTdhEnumerateProviderFilters.Call(
	uintptr(Guid),
	uintptr(TdhContextCount),
	uintptr(TdhContext),
	uintptr(FilterCount),
	uintptr(Buffer),
	uintptr(BufferSize),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // DWORD

function TdhEnumerateProviderFilters(
  Guid: PGUID;   // GUID*
  TdhContextCount: DWORD;   // DWORD
  TdhContext: Pointer;   // TDH_CONTEXT* optional
  FilterCount: Pointer;   // DWORD* out
  Buffer: Pointer;   // PROVIDER_FILTER_INFO** optional, out
  BufferSize: Pointer   // DWORD* in/out
): DWORD; stdcall;
  external 'tdh.dll' name 'TdhEnumerateProviderFilters';

result := DllCall("tdh\TdhEnumerateProviderFilters"
    , "Ptr", Guid   ; GUID*
    , "UInt", TdhContextCount   ; DWORD
    , "Ptr", TdhContext   ; TDH_CONTEXT* optional
    , "Ptr", FilterCount   ; DWORD* out
    , "Ptr", Buffer   ; PROVIDER_FILTER_INFO** optional, out
    , "Ptr", BufferSize   ; DWORD* in/out
    , "UInt")   ; return: DWORD

●TdhEnumerateProviderFilters(Guid, TdhContextCount, TdhContext, FilterCount, Buffer, BufferSize) = DLL("tdh.dll", "dword TdhEnumerateProviderFilters(void*, dword, void*, void*, void*, void*)")
# 呼び出し: TdhEnumerateProviderFilters(Guid, TdhContextCount, TdhContext, FilterCount, Buffer, BufferSize)
# Guid : GUID* -> "void*"
# TdhContextCount : DWORD -> "dword"
# TdhContext : TDH_CONTEXT* optional -> "void*"
# FilterCount : DWORD* out -> "void*"
# Buffer : PROVIDER_FILTER_INFO** optional, out -> "void*"
# BufferSize : DWORD* in/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)。