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IUnknown_QueryInterface_Proxy
関数IUnknownのQueryInterfaceをプロキシ経由で呼ぶ。
シグネチャ
// RPCRT4.dll
#include <windows.h>
HRESULT IUnknown_QueryInterface_Proxy(
IUnknown* This,
const GUID* riid,
void** ppvObject
);パラメーター
| 名前 | 型 | 方向 | 説明 |
|---|---|---|---|
| This | IUnknown* | in | 対象となるCOMオブジェクトの IUnknown インターフェイスポインター。 |
| riid | GUID* | in | 問い合わせるインターフェイスの識別子(IID)へのポインター。 |
| ppvObject | void** | out | 取得したインターフェイスポインターを受け取る変数のアドレス。 |
戻り値の型: HRESULT
各言語での呼び出し定義
// RPCRT4.dll
#include <windows.h>
HRESULT IUnknown_QueryInterface_Proxy(
IUnknown* This,
const GUID* riid,
void** ppvObject
);[DllImport("RPCRT4.dll", ExactSpelling = true)]
static extern int IUnknown_QueryInterface_Proxy(
IntPtr This, // IUnknown*
ref Guid riid, // GUID*
IntPtr ppvObject // void** out
);<DllImport("RPCRT4.dll", ExactSpelling:=True)>
Public Shared Function IUnknown_QueryInterface_Proxy(
This As IntPtr, ' IUnknown*
ByRef riid As Guid, ' GUID*
ppvObject As IntPtr ' void** out
) As Integer
End Function' This : IUnknown*
' riid : GUID*
' ppvObject : void** out
Declare PtrSafe Function IUnknown_QueryInterface_Proxy Lib "rpcrt4" ( _
ByVal This As LongPtr, _
ByVal riid As LongPtr, _
ByVal ppvObject As LongPtr) As Long
' VBA7前提(PtrSafe)。32bit Office では LongPtr→Long。Integer=16bit / Long=32bit / LongLong=64bit。import ctypes
from ctypes import wintypes
IUnknown_QueryInterface_Proxy = ctypes.windll.rpcrt4.IUnknown_QueryInterface_Proxy
IUnknown_QueryInterface_Proxy.restype = ctypes.c_int
IUnknown_QueryInterface_Proxy.argtypes = [
ctypes.c_void_p, # This : IUnknown*
ctypes.c_void_p, # riid : GUID*
ctypes.c_void_p, # ppvObject : void** out
]require 'fiddle'
require 'fiddle/import'
lib = Fiddle.dlopen('RPCRT4.dll')
IUnknown_QueryInterface_Proxy = Fiddle::Function.new(
lib['IUnknown_QueryInterface_Proxy'],
[
Fiddle::TYPE_VOIDP, # This : IUnknown*
Fiddle::TYPE_VOIDP, # riid : GUID*
Fiddle::TYPE_VOIDP, # ppvObject : void** out
],
Fiddle::TYPE_INT)#[link(name = "rpcrt4")]
extern "system" {
fn IUnknown_QueryInterface_Proxy(
This: *mut core::ffi::c_void, // IUnknown*
riid: *const GUID, // GUID*
ppvObject: *mut *mut () // void** out
) -> i32;
}
// crates: windows-sys provides ready-made bindings for this API.$sig = @"
[DllImport("RPCRT4.dll")]
public static extern int IUnknown_QueryInterface_Proxy(IntPtr This, ref Guid riid, IntPtr ppvObject);
"@
$api = Add-Type -MemberDefinition $sig -Name 'RPCRT4_IUnknown_QueryInterface_Proxy' -Namespace Win32 -PassThru
# $api::IUnknown_QueryInterface_Proxy(This, riid, ppvObject)#uselib "RPCRT4.dll"
#func global IUnknown_QueryInterface_Proxy "IUnknown_QueryInterface_Proxy" sptr, sptr, sptr
; IUnknown_QueryInterface_Proxy This, varptr(riid), ppvObject ; 戻り値は stat
; This : IUnknown* -> "sptr"
; riid : GUID* -> "sptr"
; ppvObject : void** 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 "RPCRT4.dll" #cfunc global IUnknown_QueryInterface_Proxy "IUnknown_QueryInterface_Proxy" sptr, var, sptr ; res = IUnknown_QueryInterface_Proxy(This, riid, ppvObject) ; This : IUnknown* -> "sptr" ; riid : GUID* -> "var" ; ppvObject : void** out -> "sptr" ; ※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 "RPCRT4.dll" #cfunc global IUnknown_QueryInterface_Proxy "IUnknown_QueryInterface_Proxy" sptr, sptr, sptr ; res = IUnknown_QueryInterface_Proxy(This, varptr(riid), ppvObject) ; This : IUnknown* -> "sptr" ; riid : GUID* -> "sptr" ; ppvObject : void** 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 IUnknown_QueryInterface_Proxy(IUnknown* This, GUID* riid, void** ppvObject) #uselib "RPCRT4.dll" #cfunc global IUnknown_QueryInterface_Proxy "IUnknown_QueryInterface_Proxy" intptr, var, intptr ; res = IUnknown_QueryInterface_Proxy(This, riid, ppvObject) ; This : IUnknown* -> "intptr" ; riid : GUID* -> "var" ; ppvObject : void** out -> "intptr" ; ※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 IUnknown_QueryInterface_Proxy(IUnknown* This, GUID* riid, void** ppvObject) #uselib "RPCRT4.dll" #cfunc global IUnknown_QueryInterface_Proxy "IUnknown_QueryInterface_Proxy" intptr, intptr, intptr ; res = IUnknown_QueryInterface_Proxy(This, varptr(riid), ppvObject) ; This : IUnknown* -> "intptr" ; riid : GUID* -> "intptr" ; ppvObject : void** 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 (
rpcrt4 = windows.NewLazySystemDLL("RPCRT4.dll")
procIUnknown_QueryInterface_Proxy = rpcrt4.NewProc("IUnknown_QueryInterface_Proxy")
)
// This (IUnknown*), riid (GUID*), ppvObject (void** out)
r1, _, err := procIUnknown_QueryInterface_Proxy.Call(
uintptr(This),
uintptr(riid),
uintptr(ppvObject),
)
_ = err // syscall.Errno (valid when the call sets last-error)
_ = r1 // HRESULTfunction IUnknown_QueryInterface_Proxy(
This: Pointer; // IUnknown*
riid: PGUID; // GUID*
ppvObject: Pointer // void** out
): Integer; stdcall;
external 'RPCRT4.dll' name 'IUnknown_QueryInterface_Proxy';result := DllCall("RPCRT4\IUnknown_QueryInterface_Proxy"
, "Ptr", This ; IUnknown*
, "Ptr", riid ; GUID*
, "Ptr", ppvObject ; void** out
, "Int") ; return: HRESULT●IUnknown_QueryInterface_Proxy(This, riid, ppvObject) = DLL("RPCRT4.dll", "int IUnknown_QueryInterface_Proxy(void*, void*, void*)")
# 呼び出し: IUnknown_QueryInterface_Proxy(This, riid, ppvObject)
# This : IUnknown* -> "void*"
# riid : GUID* -> "void*"
# ppvObject : void** 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)。const std = @import("std");
extern "rpcrt4" fn IUnknown_QueryInterface_Proxy(
This: ?*anyopaque, // IUnknown*
riid: [*c]GUID, // GUID*
ppvObject: ?*anyopaque // void** out
) callconv(std.os.windows.WINAPI) i32;proc IUnknown_QueryInterface_Proxy(
This: pointer, # IUnknown*
riid: ptr GUID, # GUID*
ppvObject: pointer # void** out
): int32 {.importc: "IUnknown_QueryInterface_Proxy", stdcall, dynlib: "RPCRT4.dll".}pragma(lib, "rpcrt4");
extern(Windows)
int IUnknown_QueryInterface_Proxy(
void* This, // IUnknown*
GUID* riid, // GUID*
void** ppvObject // void** out
);ccall((:IUnknown_QueryInterface_Proxy, "RPCRT4.dll"), stdcall, Int32,
(Ptr{Cvoid}, Ptr{GUID}, Ptr{Cvoid}),
This, riid, ppvObject)
# This : IUnknown* -> Ptr{Cvoid}
# riid : GUID* -> Ptr{GUID}
# ppvObject : void** out -> Ptr{Cvoid}
# stdcall は 32bit のみ意味を持つ(x64 では無視)。local ffi = require("ffi")
ffi.cdef[[
int32_t IUnknown_QueryInterface_Proxy(
void* This,
void* riid,
void** ppvObject);
]]
local rpcrt4 = ffi.load("rpcrt4")
-- rpcrt4.IUnknown_QueryInterface_Proxy(This, riid, ppvObject)
-- This : IUnknown*
-- riid : GUID*
-- ppvObject : void** out
-- 構造体/GUIDへのポインタは cdef が通るよう void* で表記(実型は各引数コメント参照)。値渡し構造体・enum は対応する typedef を cdef に追加すること。const koffi = require('koffi');
const lib = koffi.load('RPCRT4.dll');
const IUnknown_QueryInterface_Proxy = lib.func('__stdcall', 'IUnknown_QueryInterface_Proxy', 'int32_t', ['void *', 'void *', 'void *']);
// IUnknown_QueryInterface_Proxy(This, riid, ppvObject)
// This : IUnknown* -> 'void *'
// riid : GUID* -> 'void *'
// ppvObject : void** out -> 'void *'
// 出力ポインタは koffi.out(...) で包む。構造体は koffi.struct で定義。const lib = Deno.dlopen("RPCRT4.dll", {
IUnknown_QueryInterface_Proxy: { parameters: ["pointer", "pointer", "pointer"], result: "i32" },
});
// lib.symbols.IUnknown_QueryInterface_Proxy(This, riid, ppvObject)
// This : IUnknown* -> "pointer"
// riid : GUID* -> "pointer"
// ppvObject : void** out -> "pointer"
// 文字列引数は "buffer"(NUL 終端のバイト列を Uint8Array で渡す)。
// 値渡し構造体は { struct: [ ...field types... ] } を使用。<?php
$ffi = FFI::cdef(<<<C
int32_t IUnknown_QueryInterface_Proxy(
void* This,
void* riid,
void** ppvObject);
C, "RPCRT4.dll");
// $ffi->IUnknown_QueryInterface_Proxy(This, riid, ppvObject);
// This : IUnknown*
// riid : GUID*
// ppvObject : void** out
// 構造体/GUIDへのポインタは cdef が通るよう void* で表記(実型は各引数コメント参照)。値渡し構造体・enum は対応する typedef を cdef に追加すること。
// WINAPI(stdcall): x64 では呼出規約が統一されるため問題なし。x86 では __stdcall 対応のラッパが必要な場合あり。import com.sun.jna.*;
import com.sun.jna.ptr.*;
import com.sun.jna.win32.StdCallLibrary;
import com.sun.jna.win32.W32APIOptions;
public interface Rpcrt4 extends StdCallLibrary {
Rpcrt4 INSTANCE = Native.load("rpcrt4", Rpcrt4.class);
int IUnknown_QueryInterface_Proxy(
Pointer This, // IUnknown*
Pointer riid, // GUID*
Pointer ppvObject // void** out
);
}@[Link("rpcrt4")]
lib LibRPCRT4
fun IUnknown_QueryInterface_Proxy = IUnknown_QueryInterface_Proxy(
This : Void*, # IUnknown*
riid : GUID*, # GUID*
ppvObject : Void** # void** out
) : Int32
end
# 構造体/GUID/enum は lib 内に対応する型定義が必要。
# 呼出規約: x64 は規約統一のため OK。x86(32bit)は WINAPI=stdcall だが Crystal の fun に stdcall 付与構文がなく非対応。import 'dart:ffi';
import 'package:ffi/ffi.dart';
typedef IUnknown_QueryInterface_ProxyNative = Int32 Function(Pointer<Void>, Pointer<Void>, Pointer<Void>);
typedef IUnknown_QueryInterface_ProxyDart = int Function(Pointer<Void>, Pointer<Void>, Pointer<Void>);
final IUnknown_QueryInterface_Proxy = DynamicLibrary.open('RPCRT4.dll')
.lookupFunction<IUnknown_QueryInterface_ProxyNative, IUnknown_QueryInterface_ProxyDart>('IUnknown_QueryInterface_Proxy');
// This : IUnknown* -> Pointer<Void>
// riid : GUID* -> Pointer<Void>
// ppvObject : void** out -> Pointer<Void>
// 文字列は package:ffi の "...".toNativeUtf16()/toNativeUtf8() で変換。{$mode objfpc}{$H+}
function IUnknown_QueryInterface_Proxy(
This: Pointer; // IUnknown*
riid: PGUID; // GUID*
ppvObject: Pointer // void** out
): Integer; stdcall;
external 'RPCRT4.dll' name 'IUnknown_QueryInterface_Proxy';import Foreign
import Foreign.C.Types
import Foreign.C.String
foreign import stdcall safe "IUnknown_QueryInterface_Proxy"
c_IUnknown_QueryInterface_Proxy :: Ptr () -> Ptr () -> Ptr () -> IO Int32
-- This : IUnknown* -> Ptr ()
-- riid : GUID* -> Ptr ()
-- ppvObject : void** out -> Ptr ()
-- 要 GHC(Windows)。stdcall は x64 では ccall として扱われる。ブロックする API は safe 呼び出し推奨。open Ctypes
open Foreign
let iunknown_queryinterface_proxy =
foreign "IUnknown_QueryInterface_Proxy"
((ptr void) @-> (ptr void) @-> (ptr void) @-> returning int32_t)
(* This : IUnknown* -> (ptr void) *)
(* riid : GUID* -> (ptr void) *)
(* ppvObject : void** out -> (ptr void) *)
(* foreign は cdecl 前提。x64 Windows では WINAPI と一致。構造体は ctypes structure を定義のこと。 *)(cffi:define-foreign-library rpcrt4 (t "RPCRT4.dll"))
(cffi:use-foreign-library rpcrt4)
(cffi:defcfun ("IUnknown_QueryInterface_Proxy" iunknown-query-interface-proxy :convention :stdcall) :int32
(this :pointer) ; IUnknown*
(riid :pointer) ; GUID*
(ppv-object :pointer)) ; void** out
; isize/usize(INT_PTR/SIZE_T)は x64 前提で :int64/:uint64。x86 では :int32/:uint32。use Win32::API;
my $IUnknown_QueryInterface_Proxy = Win32::API::More->new('RPCRT4',
'int IUnknown_QueryInterface_Proxy(LPVOID This, LPVOID riid, LPVOID ppvObject)');
# my $ret = $IUnknown_QueryInterface_Proxy->Call($This, $riid, $ppvObject);
# This : IUnknown* -> LPVOID
# riid : GUID* -> LPVOID
# ppvObject : void** out -> LPVOID
# 値渡し構造体は pack() した文字列、または Win32::API::Struct を使用。関連項目
使用する型