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CM_Locate_DevNodeA
関数指定デバイスIDのデバイスノードを検索して取得する。
シグネチャ
// CFGMGR32.dll (ANSI / -A)
#include <windows.h>
CONFIGRET CM_Locate_DevNodeA(
DWORD* pdnDevInst,
LPSTR pDeviceID, // optional
CM_LOCATE_DEVNODE_FLAGS ulFlags
);パラメーター
| 名前 | 型 | 方向 | 説明 |
|---|---|---|---|
| pdnDevInst | DWORD* | out | 検出したデバイスノードのデバイスインスタンスハンドルを受け取る出力先。 |
| pDeviceID | LPSTR | inoptional | 検索対象のデバイスインスタンスID文字列(ANSI)。NULLの場合はルートデバイスを返す。 |
| ulFlags | CM_LOCATE_DEVNODE_FLAGS | in | 検出動作を制御するCM_LOCATE_DEVNODE_FLAGS。NORMAL/PHANTOM/CANCELREMOVE/REMOVED等を指定する。 |
戻り値の型: CONFIGRET
各言語での呼び出し定義
// CFGMGR32.dll (ANSI / -A)
#include <windows.h>
CONFIGRET CM_Locate_DevNodeA(
DWORD* pdnDevInst,
LPSTR pDeviceID, // optional
CM_LOCATE_DEVNODE_FLAGS ulFlags
);[DllImport("CFGMGR32.dll", CharSet = CharSet.Ansi, ExactSpelling = true)]
static extern uint CM_Locate_DevNodeA(
out uint pdnDevInst, // DWORD* out
[MarshalAs(UnmanagedType.LPStr)] string pDeviceID, // LPSTR optional
uint ulFlags // CM_LOCATE_DEVNODE_FLAGS
);<DllImport("CFGMGR32.dll", CharSet:=CharSet.Ansi, ExactSpelling:=True)>
Public Shared Function CM_Locate_DevNodeA(
<Out> ByRef pdnDevInst As UInteger, ' DWORD* out
<MarshalAs(UnmanagedType.LPStr)> pDeviceID As String, ' LPSTR optional
ulFlags As UInteger ' CM_LOCATE_DEVNODE_FLAGS
) As UInteger
End Function' pdnDevInst : DWORD* out
' pDeviceID : LPSTR optional
' ulFlags : CM_LOCATE_DEVNODE_FLAGS
Declare PtrSafe Function CM_Locate_DevNodeA Lib "cfgmgr32" ( _
ByRef pdnDevInst As Long, _
ByVal pDeviceID As String, _
ByVal ulFlags 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
CM_Locate_DevNodeA = ctypes.windll.cfgmgr32.CM_Locate_DevNodeA
CM_Locate_DevNodeA.restype = wintypes.DWORD
CM_Locate_DevNodeA.argtypes = [
ctypes.POINTER(wintypes.DWORD), # pdnDevInst : DWORD* out
wintypes.LPCSTR, # pDeviceID : LPSTR optional
wintypes.DWORD, # ulFlags : CM_LOCATE_DEVNODE_FLAGS
]require 'fiddle'
require 'fiddle/import'
lib = Fiddle.dlopen('CFGMGR32.dll')
CM_Locate_DevNodeA = Fiddle::Function.new(
lib['CM_Locate_DevNodeA'],
[
Fiddle::TYPE_VOIDP, # pdnDevInst : DWORD* out
Fiddle::TYPE_VOIDP, # pDeviceID : LPSTR optional
-Fiddle::TYPE_INT, # ulFlags : CM_LOCATE_DEVNODE_FLAGS
],
-Fiddle::TYPE_INT)#[link(name = "cfgmgr32")]
extern "system" {
fn CM_Locate_DevNodeA(
pdnDevInst: *mut u32, // DWORD* out
pDeviceID: *mut u8, // LPSTR optional
ulFlags: u32 // CM_LOCATE_DEVNODE_FLAGS
) -> u32;
}
// crates: windows-sys provides ready-made bindings for this API.$sig = @"
[DllImport("CFGMGR32.dll", CharSet = CharSet.Ansi)]
public static extern uint CM_Locate_DevNodeA(out uint pdnDevInst, [MarshalAs(UnmanagedType.LPStr)] string pDeviceID, uint ulFlags);
"@
$api = Add-Type -MemberDefinition $sig -Name 'CFGMGR32_CM_Locate_DevNodeA' -Namespace Win32 -PassThru
# $api::CM_Locate_DevNodeA(pdnDevInst, pDeviceID, ulFlags)#uselib "CFGMGR32.dll"
#func global CM_Locate_DevNodeA "CM_Locate_DevNodeA" sptr, sptr, sptr
; CM_Locate_DevNodeA varptr(pdnDevInst), pDeviceID, ulFlags ; 戻り値は stat
; pdnDevInst : DWORD* out -> "sptr"
; pDeviceID : LPSTR optional -> "sptr"
; ulFlags : CM_LOCATE_DEVNODE_FLAGS -> "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 "CFGMGR32.dll" #cfunc global CM_Locate_DevNodeA "CM_Locate_DevNodeA" var, str, int ; res = CM_Locate_DevNodeA(pdnDevInst, pDeviceID, ulFlags) ; pdnDevInst : DWORD* out -> "var" ; pDeviceID : LPSTR optional -> "str" ; ulFlags : CM_LOCATE_DEVNODE_FLAGS -> "int" ; ※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 "CFGMGR32.dll" #cfunc global CM_Locate_DevNodeA "CM_Locate_DevNodeA" sptr, str, int ; res = CM_Locate_DevNodeA(varptr(pdnDevInst), pDeviceID, ulFlags) ; pdnDevInst : DWORD* out -> "sptr" ; pDeviceID : LPSTR optional -> "str" ; ulFlags : CM_LOCATE_DEVNODE_FLAGS -> "int" ; ※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:
; CONFIGRET CM_Locate_DevNodeA(DWORD* pdnDevInst, LPSTR pDeviceID, CM_LOCATE_DEVNODE_FLAGS ulFlags) #uselib "CFGMGR32.dll" #cfunc global CM_Locate_DevNodeA "CM_Locate_DevNodeA" var, str, int ; res = CM_Locate_DevNodeA(pdnDevInst, pDeviceID, ulFlags) ; pdnDevInst : DWORD* out -> "var" ; pDeviceID : LPSTR optional -> "str" ; ulFlags : CM_LOCATE_DEVNODE_FLAGS -> "int" ; ※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。; CONFIGRET CM_Locate_DevNodeA(DWORD* pdnDevInst, LPSTR pDeviceID, CM_LOCATE_DEVNODE_FLAGS ulFlags) #uselib "CFGMGR32.dll" #cfunc global CM_Locate_DevNodeA "CM_Locate_DevNodeA" intptr, str, int ; res = CM_Locate_DevNodeA(varptr(pdnDevInst), pDeviceID, ulFlags) ; pdnDevInst : DWORD* out -> "intptr" ; pDeviceID : LPSTR optional -> "str" ; ulFlags : CM_LOCATE_DEVNODE_FLAGS -> "int" ; ※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 (
cfgmgr32 = windows.NewLazySystemDLL("CFGMGR32.dll")
procCM_Locate_DevNodeA = cfgmgr32.NewProc("CM_Locate_DevNodeA")
)
// pdnDevInst (DWORD* out), pDeviceID (LPSTR optional), ulFlags (CM_LOCATE_DEVNODE_FLAGS)
r1, _, err := procCM_Locate_DevNodeA.Call(
uintptr(pdnDevInst),
uintptr(unsafe.Pointer(windows.BytePtrFromString(pDeviceID))),
uintptr(ulFlags),
)
_ = err // syscall.Errno (valid when the call sets last-error)
_ = r1 // CONFIGRETfunction CM_Locate_DevNodeA(
pdnDevInst: Pointer; // DWORD* out
pDeviceID: PAnsiChar; // LPSTR optional
ulFlags: DWORD // CM_LOCATE_DEVNODE_FLAGS
): DWORD; stdcall;
external 'CFGMGR32.dll' name 'CM_Locate_DevNodeA';result := DllCall("CFGMGR32\CM_Locate_DevNodeA"
, "Ptr", pdnDevInst ; DWORD* out
, "AStr", pDeviceID ; LPSTR optional
, "UInt", ulFlags ; CM_LOCATE_DEVNODE_FLAGS
, "UInt") ; return: CONFIGRET●CM_Locate_DevNodeA(pdnDevInst, pDeviceID, ulFlags) = DLL("CFGMGR32.dll", "dword CM_Locate_DevNodeA(void*, char*, dword)")
# 呼び出し: CM_Locate_DevNodeA(pdnDevInst, pDeviceID, ulFlags)
# pdnDevInst : DWORD* out -> "void*"
# pDeviceID : LPSTR optional -> "char*"
# ulFlags : CM_LOCATE_DEVNODE_FLAGS -> "dword"
# 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 "cfgmgr32" fn CM_Locate_DevNodeA(
pdnDevInst: [*c]u32, // DWORD* out
pDeviceID: [*c]const u8, // LPSTR optional
ulFlags: u32 // CM_LOCATE_DEVNODE_FLAGS
) callconv(std.os.windows.WINAPI) u32;proc CM_Locate_DevNodeA(
pdnDevInst: ptr uint32, # DWORD* out
pDeviceID: cstring, # LPSTR optional
ulFlags: uint32 # CM_LOCATE_DEVNODE_FLAGS
): uint32 {.importc: "CM_Locate_DevNodeA", stdcall, dynlib: "CFGMGR32.dll".}pragma(lib, "cfgmgr32");
extern(Windows)
uint CM_Locate_DevNodeA(
uint* pdnDevInst, // DWORD* out
const(char)* pDeviceID, // LPSTR optional
uint ulFlags // CM_LOCATE_DEVNODE_FLAGS
);ccall((:CM_Locate_DevNodeA, "CFGMGR32.dll"), stdcall, UInt32,
(Ptr{UInt32}, Cstring, UInt32),
pdnDevInst, pDeviceID, ulFlags)
# pdnDevInst : DWORD* out -> Ptr{UInt32}
# pDeviceID : LPSTR optional -> Cstring
# ulFlags : CM_LOCATE_DEVNODE_FLAGS -> UInt32
# stdcall は 32bit のみ意味を持つ(x64 では無視)。local ffi = require("ffi")
ffi.cdef[[
uint32_t CM_Locate_DevNodeA(
uint32_t* pdnDevInst,
const char* pDeviceID,
uint32_t ulFlags);
]]
local cfgmgr32 = ffi.load("cfgmgr32")
-- cfgmgr32.CM_Locate_DevNodeA(pdnDevInst, pDeviceID, ulFlags)
-- pdnDevInst : DWORD* out
-- pDeviceID : LPSTR optional
-- ulFlags : CM_LOCATE_DEVNODE_FLAGS
-- 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('CFGMGR32.dll');
const CM_Locate_DevNodeA = lib.func('__stdcall', 'CM_Locate_DevNodeA', 'uint32_t', ['uint32_t *', 'str', 'uint32_t']);
// CM_Locate_DevNodeA(pdnDevInst, pDeviceID, ulFlags)
// pdnDevInst : DWORD* out -> 'uint32_t *'
// pDeviceID : LPSTR optional -> 'str'
// ulFlags : CM_LOCATE_DEVNODE_FLAGS -> 'uint32_t'
// 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("CFGMGR32.dll", {
CM_Locate_DevNodeA: { parameters: ["pointer", "buffer", "u32"], result: "u32" },
});
// lib.symbols.CM_Locate_DevNodeA(pdnDevInst, pDeviceID, ulFlags)
// pdnDevInst : DWORD* out -> "pointer"
// pDeviceID : LPSTR optional -> "buffer"
// ulFlags : CM_LOCATE_DEVNODE_FLAGS -> "u32"
// 文字列は "buffer"。ANSI(-A) は new TextEncoder() で UTF-8/ANSI バイト列(末尾に \x00)を渡す。
// 値渡し構造体は { struct: [ ...field types... ] } を使用。<?php
$ffi = FFI::cdef(<<<C
uint32_t CM_Locate_DevNodeA(
uint32_t* pdnDevInst,
const char* pDeviceID,
uint32_t ulFlags);
C, "CFGMGR32.dll");
// $ffi->CM_Locate_DevNodeA(pdnDevInst, pDeviceID, ulFlags);
// pdnDevInst : DWORD* out
// pDeviceID : LPSTR optional
// ulFlags : CM_LOCATE_DEVNODE_FLAGS
// 構造体/GUIDへのポインタは cdef が通るよう void* で表記(実型は各引数コメント参照)。値渡し構造体・enum は対応する typedef を cdef に追加すること。
// WINAPI(stdcall): x64 では呼出規約が統一されるため問題なし。x86 では __stdcall 対応のラッパが必要な場合あり。import com.sun.jna.*;
import com.sun.jna.ptr.*;
import com.sun.jna.win32.StdCallLibrary;
import com.sun.jna.win32.W32APIOptions;
public interface Cfgmgr32 extends StdCallLibrary {
Cfgmgr32 INSTANCE = Native.load("cfgmgr32", Cfgmgr32.class, W32APIOptions.ASCII_OPTIONS);
int CM_Locate_DevNodeA(
IntByReference pdnDevInst, // DWORD* out
String pDeviceID, // LPSTR optional
int ulFlags // CM_LOCATE_DEVNODE_FLAGS
);
}@[Link("cfgmgr32")]
lib LibCFGMGR32
fun CM_Locate_DevNodeA = CM_Locate_DevNodeA(
pdnDevInst : UInt32*, # DWORD* out
pDeviceID : UInt8*, # LPSTR optional
ulFlags : UInt32 # CM_LOCATE_DEVNODE_FLAGS
) : UInt32
end
# 構造体/GUID/enum は lib 内に対応する型定義が必要。
# 呼出規約: x64 は規約統一のため OK。x86(32bit)は WINAPI=stdcall だが Crystal の fun に stdcall 付与構文がなく非対応。import 'dart:ffi';
import 'package:ffi/ffi.dart';
typedef CM_Locate_DevNodeANative = Uint32 Function(Pointer<Uint32>, Pointer<Utf8>, Uint32);
typedef CM_Locate_DevNodeADart = int Function(Pointer<Uint32>, Pointer<Utf8>, int);
final CM_Locate_DevNodeA = DynamicLibrary.open('CFGMGR32.dll')
.lookupFunction<CM_Locate_DevNodeANative, CM_Locate_DevNodeADart>('CM_Locate_DevNodeA');
// pdnDevInst : DWORD* out -> Pointer<Uint32>
// pDeviceID : LPSTR optional -> Pointer<Utf8>
// ulFlags : CM_LOCATE_DEVNODE_FLAGS -> Uint32
// 文字列は package:ffi の "...".toNativeUtf16()/toNativeUtf8() で変換。{$mode objfpc}{$H+}
function CM_Locate_DevNodeA(
pdnDevInst: Pointer; // DWORD* out
pDeviceID: PAnsiChar; // LPSTR optional
ulFlags: DWORD // CM_LOCATE_DEVNODE_FLAGS
): DWORD; stdcall;
external 'CFGMGR32.dll' name 'CM_Locate_DevNodeA';import Foreign
import Foreign.C.Types
import Foreign.C.String
foreign import stdcall safe "CM_Locate_DevNodeA"
c_CM_Locate_DevNodeA :: Ptr Word32 -> CString -> Word32 -> IO Word32
-- pdnDevInst : DWORD* out -> Ptr Word32
-- pDeviceID : LPSTR optional -> CString
-- ulFlags : CM_LOCATE_DEVNODE_FLAGS -> Word32
-- 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 cm_locate_devnodea =
foreign "CM_Locate_DevNodeA"
((ptr uint32_t) @-> string @-> uint32_t @-> returning uint32_t)
(* pdnDevInst : DWORD* out -> (ptr uint32_t) *)
(* pDeviceID : LPSTR optional -> string *)
(* ulFlags : CM_LOCATE_DEVNODE_FLAGS -> uint32_t *)
(* 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 cfgmgr32 (t "CFGMGR32.dll"))
(cffi:use-foreign-library cfgmgr32)
(cffi:defcfun ("CM_Locate_DevNodeA" cm-locate-dev-node-a :convention :stdcall) :uint32
(pdn-dev-inst :pointer) ; DWORD* out
(p-device-id :string) ; LPSTR optional
(ul-flags :uint32)) ; CM_LOCATE_DEVNODE_FLAGS
; isize/usize(INT_PTR/SIZE_T)は x64 前提で :int64/:uint64。x86 では :int32/:uint32。use Win32::API;
my $CM_Locate_DevNodeA = Win32::API::More->new('CFGMGR32',
'DWORD CM_Locate_DevNodeA(LPVOID pdnDevInst, LPCSTR pDeviceID, DWORD ulFlags)');
# my $ret = $CM_Locate_DevNodeA->Call($pdnDevInst, $pDeviceID, $ulFlags);
# pdnDevInst : DWORD* out -> LPVOID
# pDeviceID : LPSTR optional -> LPCSTR
# ulFlags : CM_LOCATE_DEVNODE_FLAGS -> DWORD
# 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
文字セット違い
- f CM_Locate_DevNodeW (Unicode版) — 指定デバイスIDのデバイスノードを検索して取得する。