BluetoothGATTGetCharacteristicValue

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

HRESULT BluetoothGATTGetCharacteristicValue(
    HANDLE hDevice,
    BTH_LE_GATT_CHARACTERISTIC* Characteristic,
    DWORD CharacteristicValueDataSize,
    BTH_LE_GATT_CHARACTERISTIC_VALUE* CharacteristicValue,   // optional
    WORD* CharacteristicValueSizeRequired,   // optional
    DWORD Flags
);

<DllImport("BluetoothApis.dll", ExactSpelling:=True)>
Public Shared Function BluetoothGATTGetCharacteristicValue(
    hDevice As IntPtr,   ' HANDLE
    Characteristic As IntPtr,   ' BTH_LE_GATT_CHARACTERISTIC*
    CharacteristicValueDataSize As UInteger,   ' DWORD
    CharacteristicValue As IntPtr,   ' BTH_LE_GATT_CHARACTERISTIC_VALUE* optional, out
    CharacteristicValueSizeRequired As IntPtr,   ' WORD* optional, out
    Flags As UInteger   ' DWORD
) As Integer
End Function

' hDevice : HANDLE
' Characteristic : BTH_LE_GATT_CHARACTERISTIC*
' CharacteristicValueDataSize : DWORD
' CharacteristicValue : BTH_LE_GATT_CHARACTERISTIC_VALUE* optional, out
' CharacteristicValueSizeRequired : WORD* optional, out
' Flags : DWORD
Declare PtrSafe Function BluetoothGATTGetCharacteristicValue Lib "bluetoothapis" ( _
    ByVal hDevice As LongPtr, _
    ByVal Characteristic As LongPtr, _
    ByVal CharacteristicValueDataSize As Long, _
    ByVal CharacteristicValue As LongPtr, _
    ByVal CharacteristicValueSizeRequired As LongPtr, _
    ByVal Flags 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

BluetoothGATTGetCharacteristicValue = ctypes.windll.bluetoothapis.BluetoothGATTGetCharacteristicValue
BluetoothGATTGetCharacteristicValue.restype = ctypes.c_int
BluetoothGATTGetCharacteristicValue.argtypes = [
    wintypes.HANDLE,  # hDevice : HANDLE
    ctypes.c_void_p,  # Characteristic : BTH_LE_GATT_CHARACTERISTIC*
    wintypes.DWORD,  # CharacteristicValueDataSize : DWORD
    ctypes.c_void_p,  # CharacteristicValue : BTH_LE_GATT_CHARACTERISTIC_VALUE* optional, out
    ctypes.POINTER(ctypes.c_ushort),  # CharacteristicValueSizeRequired : WORD* optional, out
    wintypes.DWORD,  # Flags : DWORD
]

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('BluetoothApis.dll')
BluetoothGATTGetCharacteristicValue = Fiddle::Function.new(
  lib['BluetoothGATTGetCharacteristicValue'],
  [
    Fiddle::TYPE_VOIDP,  # hDevice : HANDLE
    Fiddle::TYPE_VOIDP,  # Characteristic : BTH_LE_GATT_CHARACTERISTIC*
    -Fiddle::TYPE_INT,  # CharacteristicValueDataSize : DWORD
    Fiddle::TYPE_VOIDP,  # CharacteristicValue : BTH_LE_GATT_CHARACTERISTIC_VALUE* optional, out
    Fiddle::TYPE_VOIDP,  # CharacteristicValueSizeRequired : WORD* optional, out
    -Fiddle::TYPE_INT,  # Flags : DWORD
  ],
  Fiddle::TYPE_INT)

#[link(name = "bluetoothapis")]
extern "system" {
    fn BluetoothGATTGetCharacteristicValue(
        hDevice: *mut core::ffi::c_void,  // HANDLE
        Characteristic: *mut BTH_LE_GATT_CHARACTERISTIC,  // BTH_LE_GATT_CHARACTERISTIC*
        CharacteristicValueDataSize: u32,  // DWORD
        CharacteristicValue: *mut BTH_LE_GATT_CHARACTERISTIC_VALUE,  // BTH_LE_GATT_CHARACTERISTIC_VALUE* optional, out
        CharacteristicValueSizeRequired: *mut u16,  // WORD* optional, out
        Flags: u32  // DWORD
    ) -> i32;
}
// crates: windows-sys provides ready-made bindings for this API.

$sig = @"
[DllImport("BluetoothApis.dll")]
public static extern int BluetoothGATTGetCharacteristicValue(IntPtr hDevice, IntPtr Characteristic, uint CharacteristicValueDataSize, IntPtr CharacteristicValue, IntPtr CharacteristicValueSizeRequired, uint Flags);
"@
$api = Add-Type -MemberDefinition $sig -Name 'BluetoothApis_BluetoothGATTGetCharacteristicValue' -Namespace Win32 -PassThru
# $api::BluetoothGATTGetCharacteristicValue(hDevice, Characteristic, CharacteristicValueDataSize, CharacteristicValue, CharacteristicValueSizeRequired, Flags)

#uselib "BluetoothApis.dll"
#func global BluetoothGATTGetCharacteristicValue "BluetoothGATTGetCharacteristicValue" sptr, sptr, sptr, sptr, sptr, sptr
; BluetoothGATTGetCharacteristicValue hDevice, varptr(Characteristic), CharacteristicValueDataSize, varptr(CharacteristicValue), varptr(CharacteristicValueSizeRequired), Flags   ; 戻り値は stat
; hDevice : HANDLE -> "sptr"
; Characteristic : BTH_LE_GATT_CHARACTERISTIC* -> "sptr"
; CharacteristicValueDataSize : DWORD -> "sptr"
; CharacteristicValue : BTH_LE_GATT_CHARACTERISTIC_VALUE* optional, out -> "sptr"
; CharacteristicValueSizeRequired : WORD* optional, out -> "sptr"
; Flags : DWORD -> "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。

import (
	"golang.org/x/sys/windows"
	"unsafe"
)

var (
	bluetoothapis = windows.NewLazySystemDLL("BluetoothApis.dll")
	procBluetoothGATTGetCharacteristicValue = bluetoothapis.NewProc("BluetoothGATTGetCharacteristicValue")
)

// hDevice (HANDLE), Characteristic (BTH_LE_GATT_CHARACTERISTIC*), CharacteristicValueDataSize (DWORD), CharacteristicValue (BTH_LE_GATT_CHARACTERISTIC_VALUE* optional, out), CharacteristicValueSizeRequired (WORD* optional, out), Flags (DWORD)
r1, _, err := procBluetoothGATTGetCharacteristicValue.Call(
	uintptr(hDevice),
	uintptr(Characteristic),
	uintptr(CharacteristicValueDataSize),
	uintptr(CharacteristicValue),
	uintptr(CharacteristicValueSizeRequired),
	uintptr(Flags),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // HRESULT

function BluetoothGATTGetCharacteristicValue(
  hDevice: THandle;   // HANDLE
  Characteristic: Pointer;   // BTH_LE_GATT_CHARACTERISTIC*
  CharacteristicValueDataSize: DWORD;   // DWORD
  CharacteristicValue: Pointer;   // BTH_LE_GATT_CHARACTERISTIC_VALUE* optional, out
  CharacteristicValueSizeRequired: Pointer;   // WORD* optional, out
  Flags: DWORD   // DWORD
): Integer; stdcall;
  external 'BluetoothApis.dll' name 'BluetoothGATTGetCharacteristicValue';

result := DllCall("BluetoothApis\BluetoothGATTGetCharacteristicValue"
    , "Ptr", hDevice   ; HANDLE
    , "Ptr", Characteristic   ; BTH_LE_GATT_CHARACTERISTIC*
    , "UInt", CharacteristicValueDataSize   ; DWORD
    , "Ptr", CharacteristicValue   ; BTH_LE_GATT_CHARACTERISTIC_VALUE* optional, out
    , "Ptr", CharacteristicValueSizeRequired   ; WORD* optional, out
    , "UInt", Flags   ; DWORD
    , "Int")   ; return: HRESULT

●BluetoothGATTGetCharacteristicValue(hDevice, Characteristic, CharacteristicValueDataSize, CharacteristicValue, CharacteristicValueSizeRequired, Flags) = DLL("BluetoothApis.dll", "int BluetoothGATTGetCharacteristicValue(void*, void*, dword, void*, void*, dword)")
# 呼び出し: BluetoothGATTGetCharacteristicValue(hDevice, Characteristic, CharacteristicValueDataSize, CharacteristicValue, CharacteristicValueSizeRequired, Flags)
# hDevice : HANDLE -> "void*"
# Characteristic : BTH_LE_GATT_CHARACTERISTIC* -> "void*"
# CharacteristicValueDataSize : DWORD -> "dword"
# CharacteristicValue : BTH_LE_GATT_CHARACTERISTIC_VALUE* optional, out -> "void*"
# CharacteristicValueSizeRequired : WORD* optional, out -> "void*"
# Flags : DWORD -> "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 "bluetoothapis" fn BluetoothGATTGetCharacteristicValue(
    hDevice: ?*anyopaque, // HANDLE
    Characteristic: [*c]BTH_LE_GATT_CHARACTERISTIC, // BTH_LE_GATT_CHARACTERISTIC*
    CharacteristicValueDataSize: u32, // DWORD
    CharacteristicValue: [*c]BTH_LE_GATT_CHARACTERISTIC_VALUE, // BTH_LE_GATT_CHARACTERISTIC_VALUE* optional, out
    CharacteristicValueSizeRequired: [*c]u16, // WORD* optional, out
    Flags: u32 // DWORD
) callconv(std.os.windows.WINAPI) i32;

proc BluetoothGATTGetCharacteristicValue(
    hDevice: pointer,  # HANDLE
    Characteristic: ptr BTH_LE_GATT_CHARACTERISTIC,  # BTH_LE_GATT_CHARACTERISTIC*
    CharacteristicValueDataSize: uint32,  # DWORD
    CharacteristicValue: ptr BTH_LE_GATT_CHARACTERISTIC_VALUE,  # BTH_LE_GATT_CHARACTERISTIC_VALUE* optional, out
    CharacteristicValueSizeRequired: ptr uint16,  # WORD* optional, out
    Flags: uint32  # DWORD
): int32 {.importc: "BluetoothGATTGetCharacteristicValue", stdcall, dynlib: "BluetoothApis.dll".}

pragma(lib, "bluetoothapis");
extern(Windows)
int BluetoothGATTGetCharacteristicValue(
    void* hDevice,   // HANDLE
    BTH_LE_GATT_CHARACTERISTIC* Characteristic,   // BTH_LE_GATT_CHARACTERISTIC*
    uint CharacteristicValueDataSize,   // DWORD
    BTH_LE_GATT_CHARACTERISTIC_VALUE* CharacteristicValue,   // BTH_LE_GATT_CHARACTERISTIC_VALUE* optional, out
    ushort* CharacteristicValueSizeRequired,   // WORD* optional, out
    uint Flags   // DWORD
);

ccall((:BluetoothGATTGetCharacteristicValue, "BluetoothApis.dll"), stdcall, Int32,
      (Ptr{Cvoid}, Ptr{BTH_LE_GATT_CHARACTERISTIC}, UInt32, Ptr{BTH_LE_GATT_CHARACTERISTIC_VALUE}, Ptr{UInt16}, UInt32),
      hDevice, Characteristic, CharacteristicValueDataSize, CharacteristicValue, CharacteristicValueSizeRequired, Flags)
# hDevice : HANDLE -> Ptr{Cvoid}
# Characteristic : BTH_LE_GATT_CHARACTERISTIC* -> Ptr{BTH_LE_GATT_CHARACTERISTIC}
# CharacteristicValueDataSize : DWORD -> UInt32
# CharacteristicValue : BTH_LE_GATT_CHARACTERISTIC_VALUE* optional, out -> Ptr{BTH_LE_GATT_CHARACTERISTIC_VALUE}
# CharacteristicValueSizeRequired : WORD* optional, out -> Ptr{UInt16}
# Flags : DWORD -> UInt32
# stdcall は 32bit のみ意味を持つ(x64 では無視)。

local ffi = require("ffi")
ffi.cdef[[
int32_t BluetoothGATTGetCharacteristicValue(
    void* hDevice,
    void* Characteristic,
    uint32_t CharacteristicValueDataSize,
    void* CharacteristicValue,
    uint16_t* CharacteristicValueSizeRequired,
    uint32_t Flags);
]]
local bluetoothapis = ffi.load("bluetoothapis")
-- bluetoothapis.BluetoothGATTGetCharacteristicValue(hDevice, Characteristic, CharacteristicValueDataSize, CharacteristicValue, CharacteristicValueSizeRequired, Flags)
-- hDevice : HANDLE
-- Characteristic : BTH_LE_GATT_CHARACTERISTIC*
-- CharacteristicValueDataSize : DWORD
-- CharacteristicValue : BTH_LE_GATT_CHARACTERISTIC_VALUE* optional, out
-- CharacteristicValueSizeRequired : WORD* optional, out
-- Flags : DWORD
-- 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 BluetoothGATTGetCharacteristicValue = lib.func('__stdcall', 'BluetoothGATTGetCharacteristicValue', 'int32_t', ['void *', 'void *', 'uint32_t', 'void *', 'uint16_t *', 'uint32_t']);
// BluetoothGATTGetCharacteristicValue(hDevice, Characteristic, CharacteristicValueDataSize, CharacteristicValue, CharacteristicValueSizeRequired, Flags)
// hDevice : HANDLE -> 'void *'
// Characteristic : BTH_LE_GATT_CHARACTERISTIC* -> 'void *'
// CharacteristicValueDataSize : DWORD -> 'uint32_t'
// CharacteristicValue : BTH_LE_GATT_CHARACTERISTIC_VALUE* optional, out -> 'void *'
// CharacteristicValueSizeRequired : WORD* optional, out -> 'uint16_t *'
// Flags : DWORD -> '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("BluetoothApis.dll", {
  BluetoothGATTGetCharacteristicValue: { parameters: ["pointer", "pointer", "u32", "pointer", "pointer", "u32"], result: "i32" },
});
// lib.symbols.BluetoothGATTGetCharacteristicValue(hDevice, Characteristic, CharacteristicValueDataSize, CharacteristicValue, CharacteristicValueSizeRequired, Flags)
// hDevice : HANDLE -> "pointer"
// Characteristic : BTH_LE_GATT_CHARACTERISTIC* -> "pointer"
// CharacteristicValueDataSize : DWORD -> "u32"
// CharacteristicValue : BTH_LE_GATT_CHARACTERISTIC_VALUE* optional, out -> "pointer"
// CharacteristicValueSizeRequired : WORD* optional, out -> "pointer"
// Flags : DWORD -> "u32"
// 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 BluetoothGATTGetCharacteristicValue(
    void* hDevice,
    void* Characteristic,
    uint32_t CharacteristicValueDataSize,
    void* CharacteristicValue,
    uint16_t* CharacteristicValueSizeRequired,
    uint32_t Flags);
C, "BluetoothApis.dll");
// $ffi->BluetoothGATTGetCharacteristicValue(hDevice, Characteristic, CharacteristicValueDataSize, CharacteristicValue, CharacteristicValueSizeRequired, Flags);
// hDevice : HANDLE
// Characteristic : BTH_LE_GATT_CHARACTERISTIC*
// CharacteristicValueDataSize : DWORD
// CharacteristicValue : BTH_LE_GATT_CHARACTERISTIC_VALUE* optional, out
// CharacteristicValueSizeRequired : WORD* optional, out
// Flags : DWORD
// 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 BluetoothGATTGetCharacteristicValue(
        Pointer hDevice,   // HANDLE
        Pointer Characteristic,   // BTH_LE_GATT_CHARACTERISTIC*
        int CharacteristicValueDataSize,   // DWORD
        Pointer CharacteristicValue,   // BTH_LE_GATT_CHARACTERISTIC_VALUE* optional, out
        ShortByReference CharacteristicValueSizeRequired,   // WORD* optional, out
        int Flags   // DWORD
    );
}

@[Link("bluetoothapis")]
lib LibBluetoothApis
  fun BluetoothGATTGetCharacteristicValue = BluetoothGATTGetCharacteristicValue(
    hDevice : Void*,   # HANDLE
    Characteristic : BTH_LE_GATT_CHARACTERISTIC*,   # BTH_LE_GATT_CHARACTERISTIC*
    CharacteristicValueDataSize : UInt32,   # DWORD
    CharacteristicValue : BTH_LE_GATT_CHARACTERISTIC_VALUE*,   # BTH_LE_GATT_CHARACTERISTIC_VALUE* optional, out
    CharacteristicValueSizeRequired : UInt16*,   # WORD* optional, out
    Flags : UInt32   # DWORD
  ) : 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 BluetoothGATTGetCharacteristicValueNative = Int32 Function(Pointer<Void>, Pointer<Void>, Uint32, Pointer<Void>, Pointer<Uint16>, Uint32);
typedef BluetoothGATTGetCharacteristicValueDart = int Function(Pointer<Void>, Pointer<Void>, int, Pointer<Void>, Pointer<Uint16>, int);
final BluetoothGATTGetCharacteristicValue = DynamicLibrary.open('BluetoothApis.dll')
    .lookupFunction<BluetoothGATTGetCharacteristicValueNative, BluetoothGATTGetCharacteristicValueDart>('BluetoothGATTGetCharacteristicValue');
// hDevice : HANDLE -> Pointer<Void>
// Characteristic : BTH_LE_GATT_CHARACTERISTIC* -> Pointer<Void>
// CharacteristicValueDataSize : DWORD -> Uint32
// CharacteristicValue : BTH_LE_GATT_CHARACTERISTIC_VALUE* optional, out -> Pointer<Void>
// CharacteristicValueSizeRequired : WORD* optional, out -> Pointer<Uint16>
// Flags : DWORD -> Uint32
// 文字列は package:ffi の "...".toNativeUtf16()/toNativeUtf8() で変換。

{$mode objfpc}{$H+}
function BluetoothGATTGetCharacteristicValue(
  hDevice: THandle;   // HANDLE
  Characteristic: Pointer;   // BTH_LE_GATT_CHARACTERISTIC*
  CharacteristicValueDataSize: DWORD;   // DWORD
  CharacteristicValue: Pointer;   // BTH_LE_GATT_CHARACTERISTIC_VALUE* optional, out
  CharacteristicValueSizeRequired: Pointer;   // WORD* optional, out
  Flags: DWORD   // DWORD
): Integer; stdcall;
  external 'BluetoothApis.dll' name 'BluetoothGATTGetCharacteristicValue';

import Foreign
import Foreign.C.Types
import Foreign.C.String

foreign import stdcall safe "BluetoothGATTGetCharacteristicValue"
  c_BluetoothGATTGetCharacteristicValue :: Ptr () -> Ptr () -> Word32 -> Ptr () -> Ptr Word16 -> Word32 -> IO Int32
-- hDevice : HANDLE -> Ptr ()
-- Characteristic : BTH_LE_GATT_CHARACTERISTIC* -> Ptr ()
-- CharacteristicValueDataSize : DWORD -> Word32
-- CharacteristicValue : BTH_LE_GATT_CHARACTERISTIC_VALUE* optional, out -> Ptr ()
-- CharacteristicValueSizeRequired : WORD* optional, out -> Ptr Word16
-- Flags : DWORD -> 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 bluetoothgattgetcharacteristicvalue =
  foreign "BluetoothGATTGetCharacteristicValue"
    ((ptr void) @-> (ptr void) @-> uint32_t @-> (ptr void) @-> (ptr uint16_t) @-> uint32_t @-> returning int32_t)
(* hDevice : HANDLE -> (ptr void) *)
(* Characteristic : BTH_LE_GATT_CHARACTERISTIC* -> (ptr void) *)
(* CharacteristicValueDataSize : DWORD -> uint32_t *)
(* CharacteristicValue : BTH_LE_GATT_CHARACTERISTIC_VALUE* optional, out -> (ptr void) *)
(* CharacteristicValueSizeRequired : WORD* optional, out -> (ptr uint16_t) *)
(* Flags : DWORD -> 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 bluetoothapis (t "BluetoothApis.dll"))
(cffi:use-foreign-library bluetoothapis)

(cffi:defcfun ("BluetoothGATTGetCharacteristicValue" bluetooth-gattget-characteristic-value :convention :stdcall) :int32
  (h-device :pointer)   ; HANDLE
  (characteristic :pointer)   ; BTH_LE_GATT_CHARACTERISTIC*
  (characteristic-value-data-size :uint32)   ; DWORD
  (characteristic-value :pointer)   ; BTH_LE_GATT_CHARACTERISTIC_VALUE* optional, out
  (characteristic-value-size-required :pointer)   ; WORD* optional, out
  (flags :uint32))   ; DWORD
; isize/usize(INT_PTR/SIZE_T)は x64 前提で :int64/:uint64。x86 では :int32/:uint32。

use Win32::API;
my $BluetoothGATTGetCharacteristicValue = Win32::API::More->new('BluetoothApis',
    'int BluetoothGATTGetCharacteristicValue(HANDLE hDevice, LPVOID Characteristic, DWORD CharacteristicValueDataSize, LPVOID CharacteristicValue, LPVOID CharacteristicValueSizeRequired, DWORD Flags)');
# my $ret = $BluetoothGATTGetCharacteristicValue->Call($hDevice, $Characteristic, $CharacteristicValueDataSize, $CharacteristicValue, $CharacteristicValueSizeRequired, $Flags);
# hDevice : HANDLE -> HANDLE
# Characteristic : BTH_LE_GATT_CHARACTERISTIC* -> LPVOID
# CharacteristicValueDataSize : DWORD -> DWORD
# CharacteristicValue : BTH_LE_GATT_CHARACTERISTIC_VALUE* optional, out -> LPVOID
# CharacteristicValueSizeRequired : WORD* optional, out -> LPVOID
# Flags : DWORD -> DWORD
# 値渡し構造体は pack() した文字列、または Win32::API::Struct を使用。