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BluetoothSdpGetAttributeValue

関数
SDPレコードから指定属性IDの値を取得する。
DLLBluetoothApis.dll呼出規約winapi対応OSWindows Vista 以降

シグネチャ

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

DWORD BluetoothSdpGetAttributeValue(
    BYTE* pRecordStream,
    DWORD cbRecordLength,
    WORD usAttributeId,
    SDP_ELEMENT_DATA* pAttributeData
);

パラメーター

名前方向説明
pRecordStreamBYTE*in解析対象のSDPレコードを含むバイトストリームへのポインタ。
cbRecordLengthDWORDinpRecordStreamのバイト長。
usAttributeIdWORDin取得する属性を識別する属性IDの16ビット値。
pAttributeDataSDP_ELEMENT_DATA*out指定属性の値を受け取るSDPエレメントデータ構造体ポインタ。

戻り値の型: DWORD

各言語での呼び出し定義

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

DWORD BluetoothSdpGetAttributeValue(
    BYTE* pRecordStream,
    DWORD cbRecordLength,
    WORD usAttributeId,
    SDP_ELEMENT_DATA* pAttributeData
);
[DllImport("BluetoothApis.dll", ExactSpelling = true)]
static extern uint BluetoothSdpGetAttributeValue(
    IntPtr pRecordStream,   // BYTE*
    uint cbRecordLength,   // DWORD
    ushort usAttributeId,   // WORD
    IntPtr pAttributeData   // SDP_ELEMENT_DATA* out
);
<DllImport("BluetoothApis.dll", ExactSpelling:=True)>
Public Shared Function BluetoothSdpGetAttributeValue(
    pRecordStream As IntPtr,   ' BYTE*
    cbRecordLength As UInteger,   ' DWORD
    usAttributeId As UShort,   ' WORD
    pAttributeData As IntPtr   ' SDP_ELEMENT_DATA* out
) As UInteger
End Function
' pRecordStream : BYTE*
' cbRecordLength : DWORD
' usAttributeId : WORD
' pAttributeData : SDP_ELEMENT_DATA* out
Declare PtrSafe Function BluetoothSdpGetAttributeValue Lib "bluetoothapis" ( _
    ByVal pRecordStream As LongPtr, _
    ByVal cbRecordLength As Long, _
    ByVal usAttributeId As Integer, _
    ByVal pAttributeData 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

BluetoothSdpGetAttributeValue = ctypes.windll.bluetoothapis.BluetoothSdpGetAttributeValue
BluetoothSdpGetAttributeValue.restype = wintypes.DWORD
BluetoothSdpGetAttributeValue.argtypes = [
    ctypes.POINTER(ctypes.c_ubyte),  # pRecordStream : BYTE*
    wintypes.DWORD,  # cbRecordLength : DWORD
    ctypes.c_ushort,  # usAttributeId : WORD
    ctypes.c_void_p,  # pAttributeData : SDP_ELEMENT_DATA* out
]
require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('BluetoothApis.dll')
BluetoothSdpGetAttributeValue = Fiddle::Function.new(
  lib['BluetoothSdpGetAttributeValue'],
  [
    Fiddle::TYPE_VOIDP,  # pRecordStream : BYTE*
    -Fiddle::TYPE_INT,  # cbRecordLength : DWORD
    -Fiddle::TYPE_SHORT,  # usAttributeId : WORD
    Fiddle::TYPE_VOIDP,  # pAttributeData : SDP_ELEMENT_DATA* out
  ],
  -Fiddle::TYPE_INT)
#[link(name = "bluetoothapis")]
extern "system" {
    fn BluetoothSdpGetAttributeValue(
        pRecordStream: *mut u8,  // BYTE*
        cbRecordLength: u32,  // DWORD
        usAttributeId: u16,  // WORD
        pAttributeData: *mut SDP_ELEMENT_DATA  // SDP_ELEMENT_DATA* out
    ) -> u32;
}
// crates: windows-sys provides ready-made bindings for this API.
$sig = @"
[DllImport("BluetoothApis.dll")]
public static extern uint BluetoothSdpGetAttributeValue(IntPtr pRecordStream, uint cbRecordLength, ushort usAttributeId, IntPtr pAttributeData);
"@
$api = Add-Type -MemberDefinition $sig -Name 'BluetoothApis_BluetoothSdpGetAttributeValue' -Namespace Win32 -PassThru
# $api::BluetoothSdpGetAttributeValue(pRecordStream, cbRecordLength, usAttributeId, pAttributeData)
#uselib "BluetoothApis.dll"
#func global BluetoothSdpGetAttributeValue "BluetoothSdpGetAttributeValue" sptr, sptr, sptr, sptr
; BluetoothSdpGetAttributeValue varptr(pRecordStream), cbRecordLength, usAttributeId, varptr(pAttributeData)   ; 戻り値は stat
; pRecordStream : BYTE* -> "sptr"
; cbRecordLength : DWORD -> "sptr"
; usAttributeId : WORD -> "sptr"
; pAttributeData : SDP_ELEMENT_DATA* 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 "BluetoothApis.dll"
#cfunc global BluetoothSdpGetAttributeValue "BluetoothSdpGetAttributeValue" var, int, int, var
; res = BluetoothSdpGetAttributeValue(pRecordStream, cbRecordLength, usAttributeId, pAttributeData)
; pRecordStream : BYTE* -> "var"
; cbRecordLength : DWORD -> "int"
; usAttributeId : WORD -> "int"
; pAttributeData : SDP_ELEMENT_DATA* 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。
出力引数:
; DWORD BluetoothSdpGetAttributeValue(BYTE* pRecordStream, DWORD cbRecordLength, WORD usAttributeId, SDP_ELEMENT_DATA* pAttributeData)
#uselib "BluetoothApis.dll"
#cfunc global BluetoothSdpGetAttributeValue "BluetoothSdpGetAttributeValue" var, int, int, var
; res = BluetoothSdpGetAttributeValue(pRecordStream, cbRecordLength, usAttributeId, pAttributeData)
; pRecordStream : BYTE* -> "var"
; cbRecordLength : DWORD -> "int"
; usAttributeId : WORD -> "int"
; pAttributeData : SDP_ELEMENT_DATA* 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。
import (
	"golang.org/x/sys/windows"
	"unsafe"
)

var (
	bluetoothapis = windows.NewLazySystemDLL("BluetoothApis.dll")
	procBluetoothSdpGetAttributeValue = bluetoothapis.NewProc("BluetoothSdpGetAttributeValue")
)

// pRecordStream (BYTE*), cbRecordLength (DWORD), usAttributeId (WORD), pAttributeData (SDP_ELEMENT_DATA* out)
r1, _, err := procBluetoothSdpGetAttributeValue.Call(
	uintptr(pRecordStream),
	uintptr(cbRecordLength),
	uintptr(usAttributeId),
	uintptr(pAttributeData),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // DWORD
function BluetoothSdpGetAttributeValue(
  pRecordStream: Pointer;   // BYTE*
  cbRecordLength: DWORD;   // DWORD
  usAttributeId: Word;   // WORD
  pAttributeData: Pointer   // SDP_ELEMENT_DATA* out
): DWORD; stdcall;
  external 'BluetoothApis.dll' name 'BluetoothSdpGetAttributeValue';
result := DllCall("BluetoothApis\BluetoothSdpGetAttributeValue"
    , "Ptr", pRecordStream   ; BYTE*
    , "UInt", cbRecordLength   ; DWORD
    , "UShort", usAttributeId   ; WORD
    , "Ptr", pAttributeData   ; SDP_ELEMENT_DATA* out
    , "UInt")   ; return: DWORD
●BluetoothSdpGetAttributeValue(pRecordStream, cbRecordLength, usAttributeId, pAttributeData) = DLL("BluetoothApis.dll", "dword BluetoothSdpGetAttributeValue(void*, dword, int, void*)")
# 呼び出し: BluetoothSdpGetAttributeValue(pRecordStream, cbRecordLength, usAttributeId, pAttributeData)
# pRecordStream : BYTE* -> "void*"
# cbRecordLength : DWORD -> "dword"
# usAttributeId : WORD -> "int"
# pAttributeData : SDP_ELEMENT_DATA* 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 "bluetoothapis" fn BluetoothSdpGetAttributeValue(
    pRecordStream: [*c]u8, // BYTE*
    cbRecordLength: u32, // DWORD
    usAttributeId: u16, // WORD
    pAttributeData: [*c]SDP_ELEMENT_DATA // SDP_ELEMENT_DATA* out
) callconv(std.os.windows.WINAPI) u32;
proc BluetoothSdpGetAttributeValue(
    pRecordStream: ptr uint8,  # BYTE*
    cbRecordLength: uint32,  # DWORD
    usAttributeId: uint16,  # WORD
    pAttributeData: ptr SDP_ELEMENT_DATA  # SDP_ELEMENT_DATA* out
): uint32 {.importc: "BluetoothSdpGetAttributeValue", stdcall, dynlib: "BluetoothApis.dll".}
pragma(lib, "bluetoothapis");
extern(Windows)
uint BluetoothSdpGetAttributeValue(
    ubyte* pRecordStream,   // BYTE*
    uint cbRecordLength,   // DWORD
    ushort usAttributeId,   // WORD
    SDP_ELEMENT_DATA* pAttributeData   // SDP_ELEMENT_DATA* out
);
ccall((:BluetoothSdpGetAttributeValue, "BluetoothApis.dll"), stdcall, UInt32,
      (Ptr{UInt8}, UInt32, UInt16, Ptr{SDP_ELEMENT_DATA}),
      pRecordStream, cbRecordLength, usAttributeId, pAttributeData)
# pRecordStream : BYTE* -> Ptr{UInt8}
# cbRecordLength : DWORD -> UInt32
# usAttributeId : WORD -> UInt16
# pAttributeData : SDP_ELEMENT_DATA* out -> Ptr{SDP_ELEMENT_DATA}
# stdcall は 32bit のみ意味を持つ(x64 では無視)。
local ffi = require("ffi")
ffi.cdef[[
uint32_t BluetoothSdpGetAttributeValue(
    uint8_t* pRecordStream,
    uint32_t cbRecordLength,
    uint16_t usAttributeId,
    void* pAttributeData);
]]
local bluetoothapis = ffi.load("bluetoothapis")
-- bluetoothapis.BluetoothSdpGetAttributeValue(pRecordStream, cbRecordLength, usAttributeId, pAttributeData)
-- pRecordStream : BYTE*
-- cbRecordLength : DWORD
-- usAttributeId : WORD
-- pAttributeData : SDP_ELEMENT_DATA* 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('BluetoothApis.dll');
const BluetoothSdpGetAttributeValue = lib.func('__stdcall', 'BluetoothSdpGetAttributeValue', 'uint32_t', ['uint8_t *', 'uint32_t', 'uint16_t', 'void *']);
// BluetoothSdpGetAttributeValue(pRecordStream, cbRecordLength, usAttributeId, pAttributeData)
// pRecordStream : BYTE* -> 'uint8_t *'
// cbRecordLength : DWORD -> 'uint32_t'
// usAttributeId : WORD -> 'uint16_t'
// pAttributeData : SDP_ELEMENT_DATA* 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("BluetoothApis.dll", {
  BluetoothSdpGetAttributeValue: { parameters: ["pointer", "u32", "u16", "pointer"], result: "u32" },
});
// lib.symbols.BluetoothSdpGetAttributeValue(pRecordStream, cbRecordLength, usAttributeId, pAttributeData)
// pRecordStream : BYTE* -> "pointer"
// cbRecordLength : DWORD -> "u32"
// usAttributeId : WORD -> "u16"
// pAttributeData : SDP_ELEMENT_DATA* 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
uint32_t BluetoothSdpGetAttributeValue(
    uint8_t* pRecordStream,
    uint32_t cbRecordLength,
    uint16_t usAttributeId,
    void* pAttributeData);
C, "BluetoothApis.dll");
// $ffi->BluetoothSdpGetAttributeValue(pRecordStream, cbRecordLength, usAttributeId, pAttributeData);
// pRecordStream : BYTE*
// cbRecordLength : DWORD
// usAttributeId : WORD
// pAttributeData : SDP_ELEMENT_DATA* 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 Bluetoothapis extends StdCallLibrary {
    Bluetoothapis INSTANCE = Native.load("bluetoothapis", Bluetoothapis.class);
    int BluetoothSdpGetAttributeValue(
        byte[] pRecordStream,   // BYTE*
        int cbRecordLength,   // DWORD
        short usAttributeId,   // WORD
        Pointer pAttributeData   // SDP_ELEMENT_DATA* out
    );
}
@[Link("bluetoothapis")]
lib LibBluetoothApis
  fun BluetoothSdpGetAttributeValue = BluetoothSdpGetAttributeValue(
    pRecordStream : UInt8*,   # BYTE*
    cbRecordLength : UInt32,   # DWORD
    usAttributeId : UInt16,   # WORD
    pAttributeData : SDP_ELEMENT_DATA*   # SDP_ELEMENT_DATA* out
  ) : 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 BluetoothSdpGetAttributeValueNative = Uint32 Function(Pointer<Uint8>, Uint32, Uint16, Pointer<Void>);
typedef BluetoothSdpGetAttributeValueDart = int Function(Pointer<Uint8>, int, int, Pointer<Void>);
final BluetoothSdpGetAttributeValue = DynamicLibrary.open('BluetoothApis.dll')
    .lookupFunction<BluetoothSdpGetAttributeValueNative, BluetoothSdpGetAttributeValueDart>('BluetoothSdpGetAttributeValue');
// pRecordStream : BYTE* -> Pointer<Uint8>
// cbRecordLength : DWORD -> Uint32
// usAttributeId : WORD -> Uint16
// pAttributeData : SDP_ELEMENT_DATA* out -> Pointer<Void>
// 文字列は package:ffi の "...".toNativeUtf16()/toNativeUtf8() で変換。
{$mode objfpc}{$H+}
function BluetoothSdpGetAttributeValue(
  pRecordStream: Pointer;   // BYTE*
  cbRecordLength: DWORD;   // DWORD
  usAttributeId: Word;   // WORD
  pAttributeData: Pointer   // SDP_ELEMENT_DATA* out
): DWORD; stdcall;
  external 'BluetoothApis.dll' name 'BluetoothSdpGetAttributeValue';
import Foreign
import Foreign.C.Types
import Foreign.C.String

foreign import stdcall safe "BluetoothSdpGetAttributeValue"
  c_BluetoothSdpGetAttributeValue :: Ptr Word8 -> Word32 -> Word16 -> Ptr () -> IO Word32
-- pRecordStream : BYTE* -> Ptr Word8
-- cbRecordLength : DWORD -> Word32
-- usAttributeId : WORD -> Word16
-- pAttributeData : SDP_ELEMENT_DATA* 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 bluetoothsdpgetattributevalue =
  foreign "BluetoothSdpGetAttributeValue"
    ((ptr uint8_t) @-> uint32_t @-> uint16_t @-> (ptr void) @-> returning uint32_t)
(* pRecordStream : BYTE* -> (ptr uint8_t) *)
(* cbRecordLength : DWORD -> uint32_t *)
(* usAttributeId : WORD -> uint16_t *)
(* pAttributeData : SDP_ELEMENT_DATA* 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 bluetoothapis (t "BluetoothApis.dll"))
(cffi:use-foreign-library bluetoothapis)

(cffi:defcfun ("BluetoothSdpGetAttributeValue" bluetooth-sdp-get-attribute-value :convention :stdcall) :uint32
  (p-record-stream :pointer)   ; BYTE*
  (cb-record-length :uint32)   ; DWORD
  (us-attribute-id :uint16)   ; WORD
  (p-attribute-data :pointer))   ; SDP_ELEMENT_DATA* out
; isize/usize(INT_PTR/SIZE_T)は x64 前提で :int64/:uint64。x86 では :int32/:uint32。
use Win32::API;
my $BluetoothSdpGetAttributeValue = Win32::API::More->new('BluetoothApis',
    'DWORD BluetoothSdpGetAttributeValue(LPVOID pRecordStream, DWORD cbRecordLength, WORD usAttributeId, LPVOID pAttributeData)');
# my $ret = $BluetoothSdpGetAttributeValue->Call($pRecordStream, $cbRecordLength, $usAttributeId, $pAttributeData);
# pRecordStream : BYTE* -> LPVOID
# cbRecordLength : DWORD -> DWORD
# usAttributeId : WORD -> WORD
# pAttributeData : SDP_ELEMENT_DATA* 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

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