BluetoothGATTGetCharacteristics

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

HRESULT BluetoothGATTGetCharacteristics(
    HANDLE hDevice,
    BTH_LE_GATT_SERVICE* Service,   // optional
    WORD CharacteristicsBufferCount,
    BTH_LE_GATT_CHARACTERISTIC* CharacteristicsBuffer,   // optional
    WORD* CharacteristicsBufferActual,
    DWORD Flags
);

<DllImport("BluetoothApis.dll", ExactSpelling:=True)>
Public Shared Function BluetoothGATTGetCharacteristics(
    hDevice As IntPtr,   ' HANDLE
    Service As IntPtr,   ' BTH_LE_GATT_SERVICE* optional
    CharacteristicsBufferCount As UShort,   ' WORD
    CharacteristicsBuffer As IntPtr,   ' BTH_LE_GATT_CHARACTERISTIC* optional, out
    <Out> ByRef CharacteristicsBufferActual As UShort,   ' WORD* out
    Flags As UInteger   ' DWORD
) As Integer
End Function

' hDevice : HANDLE
' Service : BTH_LE_GATT_SERVICE* optional
' CharacteristicsBufferCount : WORD
' CharacteristicsBuffer : BTH_LE_GATT_CHARACTERISTIC* optional, out
' CharacteristicsBufferActual : WORD* out
' Flags : DWORD
Declare PtrSafe Function BluetoothGATTGetCharacteristics Lib "bluetoothapis" ( _
    ByVal hDevice As LongPtr, _
    ByVal Service As LongPtr, _
    ByVal CharacteristicsBufferCount As Integer, _
    ByVal CharacteristicsBuffer As LongPtr, _
    ByRef CharacteristicsBufferActual As Integer, _
    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

BluetoothGATTGetCharacteristics = ctypes.windll.bluetoothapis.BluetoothGATTGetCharacteristics
BluetoothGATTGetCharacteristics.restype = ctypes.c_int
BluetoothGATTGetCharacteristics.argtypes = [
    wintypes.HANDLE,  # hDevice : HANDLE
    ctypes.c_void_p,  # Service : BTH_LE_GATT_SERVICE* optional
    ctypes.c_ushort,  # CharacteristicsBufferCount : WORD
    ctypes.c_void_p,  # CharacteristicsBuffer : BTH_LE_GATT_CHARACTERISTIC* optional, out
    ctypes.POINTER(ctypes.c_ushort),  # CharacteristicsBufferActual : WORD* out
    wintypes.DWORD,  # Flags : DWORD
]

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('BluetoothApis.dll')
BluetoothGATTGetCharacteristics = Fiddle::Function.new(
  lib['BluetoothGATTGetCharacteristics'],
  [
    Fiddle::TYPE_VOIDP,  # hDevice : HANDLE
    Fiddle::TYPE_VOIDP,  # Service : BTH_LE_GATT_SERVICE* optional
    -Fiddle::TYPE_SHORT,  # CharacteristicsBufferCount : WORD
    Fiddle::TYPE_VOIDP,  # CharacteristicsBuffer : BTH_LE_GATT_CHARACTERISTIC* optional, out
    Fiddle::TYPE_VOIDP,  # CharacteristicsBufferActual : WORD* out
    -Fiddle::TYPE_INT,  # Flags : DWORD
  ],
  Fiddle::TYPE_INT)

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

$sig = @"
[DllImport("BluetoothApis.dll")]
public static extern int BluetoothGATTGetCharacteristics(IntPtr hDevice, IntPtr Service, ushort CharacteristicsBufferCount, IntPtr CharacteristicsBuffer, out ushort CharacteristicsBufferActual, uint Flags);
"@
$api = Add-Type -MemberDefinition $sig -Name 'BluetoothApis_BluetoothGATTGetCharacteristics' -Namespace Win32 -PassThru
# $api::BluetoothGATTGetCharacteristics(hDevice, Service, CharacteristicsBufferCount, CharacteristicsBuffer, CharacteristicsBufferActual, Flags)

#uselib "BluetoothApis.dll"
#func global BluetoothGATTGetCharacteristics "BluetoothGATTGetCharacteristics" sptr, sptr, sptr, sptr, sptr, sptr
; BluetoothGATTGetCharacteristics hDevice, varptr(Service), CharacteristicsBufferCount, varptr(CharacteristicsBuffer), varptr(CharacteristicsBufferActual), Flags   ; 戻り値は stat
; hDevice : HANDLE -> "sptr"
; Service : BTH_LE_GATT_SERVICE* optional -> "sptr"
; CharacteristicsBufferCount : WORD -> "sptr"
; CharacteristicsBuffer : BTH_LE_GATT_CHARACTERISTIC* optional, out -> "sptr"
; CharacteristicsBufferActual : WORD* 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")
	procBluetoothGATTGetCharacteristics = bluetoothapis.NewProc("BluetoothGATTGetCharacteristics")
)

// hDevice (HANDLE), Service (BTH_LE_GATT_SERVICE* optional), CharacteristicsBufferCount (WORD), CharacteristicsBuffer (BTH_LE_GATT_CHARACTERISTIC* optional, out), CharacteristicsBufferActual (WORD* out), Flags (DWORD)
r1, _, err := procBluetoothGATTGetCharacteristics.Call(
	uintptr(hDevice),
	uintptr(Service),
	uintptr(CharacteristicsBufferCount),
	uintptr(CharacteristicsBuffer),
	uintptr(CharacteristicsBufferActual),
	uintptr(Flags),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // HRESULT

function BluetoothGATTGetCharacteristics(
  hDevice: THandle;   // HANDLE
  Service: Pointer;   // BTH_LE_GATT_SERVICE* optional
  CharacteristicsBufferCount: Word;   // WORD
  CharacteristicsBuffer: Pointer;   // BTH_LE_GATT_CHARACTERISTIC* optional, out
  CharacteristicsBufferActual: Pointer;   // WORD* out
  Flags: DWORD   // DWORD
): Integer; stdcall;
  external 'BluetoothApis.dll' name 'BluetoothGATTGetCharacteristics';

result := DllCall("BluetoothApis\BluetoothGATTGetCharacteristics"
    , "Ptr", hDevice   ; HANDLE
    , "Ptr", Service   ; BTH_LE_GATT_SERVICE* optional
    , "UShort", CharacteristicsBufferCount   ; WORD
    , "Ptr", CharacteristicsBuffer   ; BTH_LE_GATT_CHARACTERISTIC* optional, out
    , "Ptr", CharacteristicsBufferActual   ; WORD* out
    , "UInt", Flags   ; DWORD
    , "Int")   ; return: HRESULT

●BluetoothGATTGetCharacteristics(hDevice, Service, CharacteristicsBufferCount, CharacteristicsBuffer, CharacteristicsBufferActual, Flags) = DLL("BluetoothApis.dll", "int BluetoothGATTGetCharacteristics(void*, void*, int, void*, void*, dword)")
# 呼び出し: BluetoothGATTGetCharacteristics(hDevice, Service, CharacteristicsBufferCount, CharacteristicsBuffer, CharacteristicsBufferActual, Flags)
# hDevice : HANDLE -> "void*"
# Service : BTH_LE_GATT_SERVICE* optional -> "void*"
# CharacteristicsBufferCount : WORD -> "int"
# CharacteristicsBuffer : BTH_LE_GATT_CHARACTERISTIC* optional, out -> "void*"
# CharacteristicsBufferActual : WORD* 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 BluetoothGATTGetCharacteristics(
    hDevice: ?*anyopaque, // HANDLE
    Service: [*c]BTH_LE_GATT_SERVICE, // BTH_LE_GATT_SERVICE* optional
    CharacteristicsBufferCount: u16, // WORD
    CharacteristicsBuffer: [*c]BTH_LE_GATT_CHARACTERISTIC, // BTH_LE_GATT_CHARACTERISTIC* optional, out
    CharacteristicsBufferActual: [*c]u16, // WORD* out
    Flags: u32 // DWORD
) callconv(std.os.windows.WINAPI) i32;

proc BluetoothGATTGetCharacteristics(
    hDevice: pointer,  # HANDLE
    Service: ptr BTH_LE_GATT_SERVICE,  # BTH_LE_GATT_SERVICE* optional
    CharacteristicsBufferCount: uint16,  # WORD
    CharacteristicsBuffer: ptr BTH_LE_GATT_CHARACTERISTIC,  # BTH_LE_GATT_CHARACTERISTIC* optional, out
    CharacteristicsBufferActual: ptr uint16,  # WORD* out
    Flags: uint32  # DWORD
): int32 {.importc: "BluetoothGATTGetCharacteristics", stdcall, dynlib: "BluetoothApis.dll".}

pragma(lib, "bluetoothapis");
extern(Windows)
int BluetoothGATTGetCharacteristics(
    void* hDevice,   // HANDLE
    BTH_LE_GATT_SERVICE* Service,   // BTH_LE_GATT_SERVICE* optional
    ushort CharacteristicsBufferCount,   // WORD
    BTH_LE_GATT_CHARACTERISTIC* CharacteristicsBuffer,   // BTH_LE_GATT_CHARACTERISTIC* optional, out
    ushort* CharacteristicsBufferActual,   // WORD* out
    uint Flags   // DWORD
);

ccall((:BluetoothGATTGetCharacteristics, "BluetoothApis.dll"), stdcall, Int32,
      (Ptr{Cvoid}, Ptr{BTH_LE_GATT_SERVICE}, UInt16, Ptr{BTH_LE_GATT_CHARACTERISTIC}, Ptr{UInt16}, UInt32),
      hDevice, Service, CharacteristicsBufferCount, CharacteristicsBuffer, CharacteristicsBufferActual, Flags)
# hDevice : HANDLE -> Ptr{Cvoid}
# Service : BTH_LE_GATT_SERVICE* optional -> Ptr{BTH_LE_GATT_SERVICE}
# CharacteristicsBufferCount : WORD -> UInt16
# CharacteristicsBuffer : BTH_LE_GATT_CHARACTERISTIC* optional, out -> Ptr{BTH_LE_GATT_CHARACTERISTIC}
# CharacteristicsBufferActual : WORD* 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 BluetoothGATTGetCharacteristics(
    void* hDevice,
    void* Service,
    uint16_t CharacteristicsBufferCount,
    void* CharacteristicsBuffer,
    uint16_t* CharacteristicsBufferActual,
    uint32_t Flags);
]]
local bluetoothapis = ffi.load("bluetoothapis")
-- bluetoothapis.BluetoothGATTGetCharacteristics(hDevice, Service, CharacteristicsBufferCount, CharacteristicsBuffer, CharacteristicsBufferActual, Flags)
-- hDevice : HANDLE
-- Service : BTH_LE_GATT_SERVICE* optional
-- CharacteristicsBufferCount : WORD
-- CharacteristicsBuffer : BTH_LE_GATT_CHARACTERISTIC* optional, out
-- CharacteristicsBufferActual : WORD* 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 BluetoothGATTGetCharacteristics = lib.func('__stdcall', 'BluetoothGATTGetCharacteristics', 'int32_t', ['void *', 'void *', 'uint16_t', 'void *', 'uint16_t *', 'uint32_t']);
// BluetoothGATTGetCharacteristics(hDevice, Service, CharacteristicsBufferCount, CharacteristicsBuffer, CharacteristicsBufferActual, Flags)
// hDevice : HANDLE -> 'void *'
// Service : BTH_LE_GATT_SERVICE* optional -> 'void *'
// CharacteristicsBufferCount : WORD -> 'uint16_t'
// CharacteristicsBuffer : BTH_LE_GATT_CHARACTERISTIC* optional, out -> 'void *'
// CharacteristicsBufferActual : WORD* 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", {
  BluetoothGATTGetCharacteristics: { parameters: ["pointer", "pointer", "u16", "pointer", "pointer", "u32"], result: "i32" },
});
// lib.symbols.BluetoothGATTGetCharacteristics(hDevice, Service, CharacteristicsBufferCount, CharacteristicsBuffer, CharacteristicsBufferActual, Flags)
// hDevice : HANDLE -> "pointer"
// Service : BTH_LE_GATT_SERVICE* optional -> "pointer"
// CharacteristicsBufferCount : WORD -> "u16"
// CharacteristicsBuffer : BTH_LE_GATT_CHARACTERISTIC* optional, out -> "pointer"
// CharacteristicsBufferActual : WORD* 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 BluetoothGATTGetCharacteristics(
    void* hDevice,
    void* Service,
    uint16_t CharacteristicsBufferCount,
    void* CharacteristicsBuffer,
    uint16_t* CharacteristicsBufferActual,
    uint32_t Flags);
C, "BluetoothApis.dll");
// $ffi->BluetoothGATTGetCharacteristics(hDevice, Service, CharacteristicsBufferCount, CharacteristicsBuffer, CharacteristicsBufferActual, Flags);
// hDevice : HANDLE
// Service : BTH_LE_GATT_SERVICE* optional
// CharacteristicsBufferCount : WORD
// CharacteristicsBuffer : BTH_LE_GATT_CHARACTERISTIC* optional, out
// CharacteristicsBufferActual : WORD* 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 BluetoothGATTGetCharacteristics(
        Pointer hDevice,   // HANDLE
        Pointer Service,   // BTH_LE_GATT_SERVICE* optional
        short CharacteristicsBufferCount,   // WORD
        Pointer CharacteristicsBuffer,   // BTH_LE_GATT_CHARACTERISTIC* optional, out
        ShortByReference CharacteristicsBufferActual,   // WORD* out
        int Flags   // DWORD
    );
}

@[Link("bluetoothapis")]
lib LibBluetoothApis
  fun BluetoothGATTGetCharacteristics = BluetoothGATTGetCharacteristics(
    hDevice : Void*,   # HANDLE
    Service : BTH_LE_GATT_SERVICE*,   # BTH_LE_GATT_SERVICE* optional
    CharacteristicsBufferCount : UInt16,   # WORD
    CharacteristicsBuffer : BTH_LE_GATT_CHARACTERISTIC*,   # BTH_LE_GATT_CHARACTERISTIC* optional, out
    CharacteristicsBufferActual : UInt16*,   # WORD* 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 BluetoothGATTGetCharacteristicsNative = Int32 Function(Pointer<Void>, Pointer<Void>, Uint16, Pointer<Void>, Pointer<Uint16>, Uint32);
typedef BluetoothGATTGetCharacteristicsDart = int Function(Pointer<Void>, Pointer<Void>, int, Pointer<Void>, Pointer<Uint16>, int);
final BluetoothGATTGetCharacteristics = DynamicLibrary.open('BluetoothApis.dll')
    .lookupFunction<BluetoothGATTGetCharacteristicsNative, BluetoothGATTGetCharacteristicsDart>('BluetoothGATTGetCharacteristics');
// hDevice : HANDLE -> Pointer<Void>
// Service : BTH_LE_GATT_SERVICE* optional -> Pointer<Void>
// CharacteristicsBufferCount : WORD -> Uint16
// CharacteristicsBuffer : BTH_LE_GATT_CHARACTERISTIC* optional, out -> Pointer<Void>
// CharacteristicsBufferActual : WORD* out -> Pointer<Uint16>
// Flags : DWORD -> Uint32
// 文字列は package:ffi の "...".toNativeUtf16()/toNativeUtf8() で変換。

{$mode objfpc}{$H+}
function BluetoothGATTGetCharacteristics(
  hDevice: THandle;   // HANDLE
  Service: Pointer;   // BTH_LE_GATT_SERVICE* optional
  CharacteristicsBufferCount: Word;   // WORD
  CharacteristicsBuffer: Pointer;   // BTH_LE_GATT_CHARACTERISTIC* optional, out
  CharacteristicsBufferActual: Pointer;   // WORD* out
  Flags: DWORD   // DWORD
): Integer; stdcall;
  external 'BluetoothApis.dll' name 'BluetoothGATTGetCharacteristics';

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

foreign import stdcall safe "BluetoothGATTGetCharacteristics"
  c_BluetoothGATTGetCharacteristics :: Ptr () -> Ptr () -> Word16 -> Ptr () -> Ptr Word16 -> Word32 -> IO Int32
-- hDevice : HANDLE -> Ptr ()
-- Service : BTH_LE_GATT_SERVICE* optional -> Ptr ()
-- CharacteristicsBufferCount : WORD -> Word16
-- CharacteristicsBuffer : BTH_LE_GATT_CHARACTERISTIC* optional, out -> Ptr ()
-- CharacteristicsBufferActual : WORD* 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 bluetoothgattgetcharacteristics =
  foreign "BluetoothGATTGetCharacteristics"
    ((ptr void) @-> (ptr void) @-> uint16_t @-> (ptr void) @-> (ptr uint16_t) @-> uint32_t @-> returning int32_t)
(* hDevice : HANDLE -> (ptr void) *)
(* Service : BTH_LE_GATT_SERVICE* optional -> (ptr void) *)
(* CharacteristicsBufferCount : WORD -> uint16_t *)
(* CharacteristicsBuffer : BTH_LE_GATT_CHARACTERISTIC* optional, out -> (ptr void) *)
(* CharacteristicsBufferActual : WORD* 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 ("BluetoothGATTGetCharacteristics" bluetooth-gattget-characteristics :convention :stdcall) :int32
  (h-device :pointer)   ; HANDLE
  (service :pointer)   ; BTH_LE_GATT_SERVICE* optional
  (characteristics-buffer-count :uint16)   ; WORD
  (characteristics-buffer :pointer)   ; BTH_LE_GATT_CHARACTERISTIC* optional, out
  (characteristics-buffer-actual :pointer)   ; WORD* 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 $BluetoothGATTGetCharacteristics = Win32::API::More->new('BluetoothApis',
    'int BluetoothGATTGetCharacteristics(HANDLE hDevice, LPVOID Service, WORD CharacteristicsBufferCount, LPVOID CharacteristicsBuffer, LPVOID CharacteristicsBufferActual, DWORD Flags)');
# my $ret = $BluetoothGATTGetCharacteristics->Call($hDevice, $Service, $CharacteristicsBufferCount, $CharacteristicsBuffer, $CharacteristicsBufferActual, $Flags);
# hDevice : HANDLE -> HANDLE
# Service : BTH_LE_GATT_SERVICE* optional -> LPVOID
# CharacteristicsBufferCount : WORD -> WORD
# CharacteristicsBuffer : BTH_LE_GATT_CHARACTERISTIC* optional, out -> LPVOID
# CharacteristicsBufferActual : WORD* 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。