Win32 API 日本語リファレンス
ホームDevices.DeviceQuery › DevFreeObjectProperties

DevFreeObjectProperties

関数
取得したデバイスオブジェクトのプロパティ配列を解放する。
DLLapi-ms-win-devices-query-l1-1-0.dll呼出規約winapi

シグネチャ

// api-ms-win-devices-query-l1-1-0.dll
#include <windows.h>

void DevFreeObjectProperties(
    DWORD cPropertyCount,
    const DEVPROPERTY* pProperties
);

パラメーター

名前方向説明
cPropertyCountDWORDin解放するpProperties配列の要素数。取得時の個数を渡す。
pPropertiesDEVPROPERTY*inDevGetObjectProperties系で取得したDEVPROPERTY配列へのポインター。解放対象。

戻り値の型: void

各言語での呼び出し定義

// api-ms-win-devices-query-l1-1-0.dll
#include <windows.h>

void DevFreeObjectProperties(
    DWORD cPropertyCount,
    const DEVPROPERTY* pProperties
);
[DllImport("api-ms-win-devices-query-l1-1-0.dll", ExactSpelling = true)]
static extern void DevFreeObjectProperties(
    uint cPropertyCount,   // DWORD
    IntPtr pProperties   // DEVPROPERTY*
);
<DllImport("api-ms-win-devices-query-l1-1-0.dll", ExactSpelling:=True)>
Public Shared Sub DevFreeObjectProperties(
    cPropertyCount As UInteger,   ' DWORD
    pProperties As IntPtr   ' DEVPROPERTY*
)
End Sub
' cPropertyCount : DWORD
' pProperties : DEVPROPERTY*
Declare PtrSafe Sub DevFreeObjectProperties Lib "api-ms-win-devices-query-l1-1-0" ( _
    ByVal cPropertyCount As Long, _
    ByVal pProperties As LongPtr)
' VBA7前提(PtrSafe)。32bit Office では LongPtr→Long。Integer=16bit / Long=32bit / LongLong=64bit。
import ctypes
from ctypes import wintypes

DevFreeObjectProperties = ctypes.windll.LoadLibrary("api-ms-win-devices-query-l1-1-0.dll").DevFreeObjectProperties
DevFreeObjectProperties.restype = None
DevFreeObjectProperties.argtypes = [
    wintypes.DWORD,  # cPropertyCount : DWORD
    ctypes.c_void_p,  # pProperties : DEVPROPERTY*
]
require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('api-ms-win-devices-query-l1-1-0.dll')
DevFreeObjectProperties = Fiddle::Function.new(
  lib['DevFreeObjectProperties'],
  [
    -Fiddle::TYPE_INT,  # cPropertyCount : DWORD
    Fiddle::TYPE_VOIDP,  # pProperties : DEVPROPERTY*
  ],
  Fiddle::TYPE_VOID)
#[link(name = "api-ms-win-devices-query-l1-1-0")]
extern "system" {
    fn DevFreeObjectProperties(
        cPropertyCount: u32,  // DWORD
        pProperties: *const DEVPROPERTY  // DEVPROPERTY*
    );
}
// crates: windows-sys provides ready-made bindings for this API.
$sig = @"
[DllImport("api-ms-win-devices-query-l1-1-0.dll")]
public static extern void DevFreeObjectProperties(uint cPropertyCount, IntPtr pProperties);
"@
$api = Add-Type -MemberDefinition $sig -Name 'api-ms-win-devices-query-l1-1-0_DevFreeObjectProperties' -Namespace Win32 -PassThru
# $api::DevFreeObjectProperties(cPropertyCount, pProperties)
#uselib "api-ms-win-devices-query-l1-1-0.dll"
#func global DevFreeObjectProperties "DevFreeObjectProperties" sptr, sptr
; DevFreeObjectProperties cPropertyCount, varptr(pProperties)
; cPropertyCount : DWORD -> "sptr"
; pProperties : DEVPROPERTY* -> "sptr"
出力引数:
#uselib "api-ms-win-devices-query-l1-1-0.dll"
#func global DevFreeObjectProperties "DevFreeObjectProperties" int, var
; DevFreeObjectProperties cPropertyCount, pProperties
; cPropertyCount : DWORD -> "int"
; pProperties : DEVPROPERTY* -> "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。
出力引数:
; void DevFreeObjectProperties(DWORD cPropertyCount, DEVPROPERTY* pProperties)
#uselib "api-ms-win-devices-query-l1-1-0.dll"
#func global DevFreeObjectProperties "DevFreeObjectProperties" int, var
; DevFreeObjectProperties cPropertyCount, pProperties
; cPropertyCount : DWORD -> "int"
; pProperties : DEVPROPERTY* -> "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。
import (
	"golang.org/x/sys/windows"
	"unsafe"
)

var (
	api_ms_win_devices_query_l1_1_0 = windows.NewLazySystemDLL("api-ms-win-devices-query-l1-1-0.dll")
	procDevFreeObjectProperties = api_ms_win_devices_query_l1_1_0.NewProc("DevFreeObjectProperties")
)

// cPropertyCount (DWORD), pProperties (DEVPROPERTY*)
r1, _, err := procDevFreeObjectProperties.Call(
	uintptr(cPropertyCount),
	uintptr(pProperties),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // void
procedure DevFreeObjectProperties(
  cPropertyCount: DWORD;   // DWORD
  pProperties: Pointer   // DEVPROPERTY*
); stdcall;
  external 'api-ms-win-devices-query-l1-1-0.dll' name 'DevFreeObjectProperties';
result := DllCall("api-ms-win-devices-query-l1-1-0\DevFreeObjectProperties"
    , "UInt", cPropertyCount   ; DWORD
    , "Ptr", pProperties   ; DEVPROPERTY*
    , "Int")   ; return: void
●DevFreeObjectProperties(cPropertyCount, pProperties) = DLL("api-ms-win-devices-query-l1-1-0.dll", "int DevFreeObjectProperties(dword, void*)")
# 呼び出し: DevFreeObjectProperties(cPropertyCount, pProperties)
# cPropertyCount : DWORD -> "dword"
# pProperties : DEVPROPERTY* -> "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 "api-ms-win-devices-query-l1-1-0" fn DevFreeObjectProperties(
    cPropertyCount: u32, // DWORD
    pProperties: [*c]DEVPROPERTY // DEVPROPERTY*
) callconv(std.os.windows.WINAPI) void;
proc DevFreeObjectProperties(
    cPropertyCount: uint32,  # DWORD
    pProperties: ptr DEVPROPERTY  # DEVPROPERTY*
) {.importc: "DevFreeObjectProperties", stdcall, dynlib: "api-ms-win-devices-query-l1-1-0.dll".}
pragma(lib, "api-ms-win-devices-query-l1-1-0");
extern(Windows)
void DevFreeObjectProperties(
    uint cPropertyCount,   // DWORD
    DEVPROPERTY* pProperties   // DEVPROPERTY*
);
ccall((:DevFreeObjectProperties, "api-ms-win-devices-query-l1-1-0.dll"), stdcall, Cvoid,
      (UInt32, Ptr{DEVPROPERTY}),
      cPropertyCount, pProperties)
# cPropertyCount : DWORD -> UInt32
# pProperties : DEVPROPERTY* -> Ptr{DEVPROPERTY}
# stdcall は 32bit のみ意味を持つ(x64 では無視)。
local ffi = require("ffi")
ffi.cdef[[
void DevFreeObjectProperties(
    uint32_t cPropertyCount,
    void* pProperties);
]]
local api-ms-win-devices-query-l1-1-0 = ffi.load("api-ms-win-devices-query-l1-1-0")
-- api-ms-win-devices-query-l1-1-0.DevFreeObjectProperties(cPropertyCount, pProperties)
-- cPropertyCount : DWORD
-- pProperties : DEVPROPERTY*
-- 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('api-ms-win-devices-query-l1-1-0.dll');
const DevFreeObjectProperties = lib.func('__stdcall', 'DevFreeObjectProperties', 'void', ['uint32_t', 'void *']);
// DevFreeObjectProperties(cPropertyCount, pProperties)
// cPropertyCount : DWORD -> 'uint32_t'
// pProperties : DEVPROPERTY* -> '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("api-ms-win-devices-query-l1-1-0.dll", {
  DevFreeObjectProperties: { parameters: ["u32", "pointer"], result: "void" },
});
// lib.symbols.DevFreeObjectProperties(cPropertyCount, pProperties)
// cPropertyCount : DWORD -> "u32"
// pProperties : DEVPROPERTY* -> "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
void DevFreeObjectProperties(
    uint32_t cPropertyCount,
    void* pProperties);
C, "api-ms-win-devices-query-l1-1-0.dll");
// $ffi->DevFreeObjectProperties(cPropertyCount, pProperties);
// cPropertyCount : DWORD
// pProperties : DEVPROPERTY*
// 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 Api-ms-win-devices-query-l1-1-0 extends StdCallLibrary {
    Api-ms-win-devices-query-l1-1-0 INSTANCE = Native.load("api-ms-win-devices-query-l1-1-0", Api-ms-win-devices-query-l1-1-0.class);
    void DevFreeObjectProperties(
        int cPropertyCount,   // DWORD
        Pointer pProperties   // DEVPROPERTY*
    );
}
@[Link("api-ms-win-devices-query-l1-1-0")]
lib Libapi-ms-win-devices-query-l1-1-0
  fun DevFreeObjectProperties = DevFreeObjectProperties(
    cPropertyCount : UInt32,   # DWORD
    pProperties : DEVPROPERTY*   # DEVPROPERTY*
  ) : Void
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 DevFreeObjectPropertiesNative = Void Function(Uint32, Pointer<Void>);
typedef DevFreeObjectPropertiesDart = void Function(int, Pointer<Void>);
final DevFreeObjectProperties = DynamicLibrary.open('api-ms-win-devices-query-l1-1-0.dll')
    .lookupFunction<DevFreeObjectPropertiesNative, DevFreeObjectPropertiesDart>('DevFreeObjectProperties');
// cPropertyCount : DWORD -> Uint32
// pProperties : DEVPROPERTY* -> Pointer<Void>
// 文字列は package:ffi の "...".toNativeUtf16()/toNativeUtf8() で変換。
{$mode objfpc}{$H+}
procedure DevFreeObjectProperties(
  cPropertyCount: DWORD;   // DWORD
  pProperties: Pointer   // DEVPROPERTY*
); stdcall;
  external 'api-ms-win-devices-query-l1-1-0.dll' name 'DevFreeObjectProperties';
import Foreign
import Foreign.C.Types
import Foreign.C.String

foreign import stdcall safe "DevFreeObjectProperties"
  c_DevFreeObjectProperties :: Word32 -> Ptr () -> IO ()
-- cPropertyCount : DWORD -> Word32
-- pProperties : DEVPROPERTY* -> 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 devfreeobjectproperties =
  foreign "DevFreeObjectProperties"
    (uint32_t @-> (ptr void) @-> returning void)
(* cPropertyCount : DWORD -> uint32_t *)
(* pProperties : DEVPROPERTY* -> (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 api-ms-win-devices-query-l1-1-0 (t "api-ms-win-devices-query-l1-1-0.dll"))
(cffi:use-foreign-library api-ms-win-devices-query-l1-1-0)

(cffi:defcfun ("DevFreeObjectProperties" dev-free-object-properties :convention :stdcall) :void
  (c-property-count :uint32)   ; DWORD
  (p-properties :pointer))   ; DEVPROPERTY*
; isize/usize(INT_PTR/SIZE_T)は x64 前提で :int64/:uint64。x86 では :int32/:uint32。
use Win32::API;
my $DevFreeObjectProperties = Win32::API::More->new('api-ms-win-devices-query-l1-1-0',
    'void DevFreeObjectProperties(DWORD cPropertyCount, LPVOID pProperties)');
# my $ret = $DevFreeObjectProperties->Call($cPropertyCount, $pProperties);
# cPropertyCount : DWORD -> DWORD
# pProperties : DEVPROPERTY* -> LPVOID
# 値渡し構造体は pack() した文字列、または Win32::API::Struct を使用。

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