PeerGroupOpenDirectConnection

// P2P.dll
#include <windows.h>

HRESULT PeerGroupOpenDirectConnection(
    void* hGroup,
    LPCWSTR pwzIdentity,
    PEER_ADDRESS* pAddress,
    ULONGLONG* pullConnectionId
);

<DllImport("P2P.dll", ExactSpelling:=True)>
Public Shared Function PeerGroupOpenDirectConnection(
    hGroup As IntPtr,   ' void*
    <MarshalAs(UnmanagedType.LPWStr)> pwzIdentity As String,   ' LPCWSTR
    pAddress As IntPtr,   ' PEER_ADDRESS*
    <Out> ByRef pullConnectionId As ULong   ' ULONGLONG* out
) As Integer
End Function

' hGroup : void*
' pwzIdentity : LPCWSTR
' pAddress : PEER_ADDRESS*
' pullConnectionId : ULONGLONG* out
Declare PtrSafe Function PeerGroupOpenDirectConnection Lib "p2p" ( _
    ByVal hGroup As LongPtr, _
    ByVal pwzIdentity As LongPtr, _
    ByVal pAddress As LongPtr, _
    ByRef pullConnectionId As LongLong) As Long
' VBA7前提(PtrSafe)。32bit Office では LongPtr→Long。Integer=16bit / Long=32bit / LongLong=64bit。

import ctypes
from ctypes import wintypes

PeerGroupOpenDirectConnection = ctypes.windll.p2p.PeerGroupOpenDirectConnection
PeerGroupOpenDirectConnection.restype = ctypes.c_int
PeerGroupOpenDirectConnection.argtypes = [
    ctypes.POINTER(None),  # hGroup : void*
    wintypes.LPCWSTR,  # pwzIdentity : LPCWSTR
    ctypes.c_void_p,  # pAddress : PEER_ADDRESS*
    ctypes.POINTER(ctypes.c_ulonglong),  # pullConnectionId : ULONGLONG* out
]

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('P2P.dll')
PeerGroupOpenDirectConnection = Fiddle::Function.new(
  lib['PeerGroupOpenDirectConnection'],
  [
    Fiddle::TYPE_VOIDP,  # hGroup : void*
    Fiddle::TYPE_VOIDP,  # pwzIdentity : LPCWSTR
    Fiddle::TYPE_VOIDP,  # pAddress : PEER_ADDRESS*
    Fiddle::TYPE_VOIDP,  # pullConnectionId : ULONGLONG* out
  ],
  Fiddle::TYPE_INT)

#[link(name = "p2p")]
extern "system" {
    fn PeerGroupOpenDirectConnection(
        hGroup: *mut (),  // void*
        pwzIdentity: *const u16,  // LPCWSTR
        pAddress: *mut PEER_ADDRESS,  // PEER_ADDRESS*
        pullConnectionId: *mut u64  // ULONGLONG* out
    ) -> i32;
}
// crates: windows-sys provides ready-made bindings for this API.

$sig = @"
[DllImport("P2P.dll")]
public static extern int PeerGroupOpenDirectConnection(IntPtr hGroup, [MarshalAs(UnmanagedType.LPWStr)] string pwzIdentity, IntPtr pAddress, out ulong pullConnectionId);
"@
$api = Add-Type -MemberDefinition $sig -Name 'P2P_PeerGroupOpenDirectConnection' -Namespace Win32 -PassThru
# $api::PeerGroupOpenDirectConnection(hGroup, pwzIdentity, pAddress, pullConnectionId)

#uselib "P2P.dll"
#func global PeerGroupOpenDirectConnection "PeerGroupOpenDirectConnection" sptr, sptr, sptr, sptr
; PeerGroupOpenDirectConnection hGroup, pwzIdentity, varptr(pAddress), varptr(pullConnectionId)   ; 戻り値は stat
; hGroup : void* -> "sptr"
; pwzIdentity : LPCWSTR -> "sptr"
; pAddress : PEER_ADDRESS* -> "sptr"
; pullConnectionId : ULONGLONG* 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。

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

var (
	p2p = windows.NewLazySystemDLL("P2P.dll")
	procPeerGroupOpenDirectConnection = p2p.NewProc("PeerGroupOpenDirectConnection")
)

// hGroup (void*), pwzIdentity (LPCWSTR), pAddress (PEER_ADDRESS*), pullConnectionId (ULONGLONG* out)
r1, _, err := procPeerGroupOpenDirectConnection.Call(
	uintptr(hGroup),
	uintptr(unsafe.Pointer(windows.StringToUTF16Ptr(pwzIdentity))),
	uintptr(pAddress),
	uintptr(pullConnectionId),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // HRESULT

function PeerGroupOpenDirectConnection(
  hGroup: Pointer;   // void*
  pwzIdentity: PWideChar;   // LPCWSTR
  pAddress: Pointer;   // PEER_ADDRESS*
  pullConnectionId: Pointer   // ULONGLONG* out
): Integer; stdcall;
  external 'P2P.dll' name 'PeerGroupOpenDirectConnection';

result := DllCall("P2P\PeerGroupOpenDirectConnection"
    , "Ptr", hGroup   ; void*
    , "WStr", pwzIdentity   ; LPCWSTR
    , "Ptr", pAddress   ; PEER_ADDRESS*
    , "Ptr", pullConnectionId   ; ULONGLONG* out
    , "Int")   ; return: HRESULT

●PeerGroupOpenDirectConnection(hGroup, pwzIdentity, pAddress, pullConnectionId) = DLL("P2P.dll", "int PeerGroupOpenDirectConnection(void*, char*, void*, void*)")
# 呼び出し: PeerGroupOpenDirectConnection(hGroup, pwzIdentity, pAddress, pullConnectionId)
# hGroup : void* -> "void*"
# pwzIdentity : LPCWSTR -> "char*"
# pAddress : PEER_ADDRESS* -> "void*"
# pullConnectionId : ULONGLONG* 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 "p2p" fn PeerGroupOpenDirectConnection(
    hGroup: ?*anyopaque, // void*
    pwzIdentity: [*c]const u16, // LPCWSTR
    pAddress: [*c]PEER_ADDRESS, // PEER_ADDRESS*
    pullConnectionId: [*c]u64 // ULONGLONG* out
) callconv(std.os.windows.WINAPI) i32;

proc PeerGroupOpenDirectConnection(
    hGroup: pointer,  # void*
    pwzIdentity: WideCString,  # LPCWSTR
    pAddress: ptr PEER_ADDRESS,  # PEER_ADDRESS*
    pullConnectionId: ptr uint64  # ULONGLONG* out
): int32 {.importc: "PeerGroupOpenDirectConnection", stdcall, dynlib: "P2P.dll".}

pragma(lib, "p2p");
extern(Windows)
int PeerGroupOpenDirectConnection(
    void* hGroup,   // void*
    const(wchar)* pwzIdentity,   // LPCWSTR
    PEER_ADDRESS* pAddress,   // PEER_ADDRESS*
    ulong* pullConnectionId   // ULONGLONG* out
);

ccall((:PeerGroupOpenDirectConnection, "P2P.dll"), stdcall, Int32,
      (Ptr{Cvoid}, Cwstring, Ptr{PEER_ADDRESS}, Ptr{UInt64}),
      hGroup, pwzIdentity, pAddress, pullConnectionId)
# hGroup : void* -> Ptr{Cvoid}
# pwzIdentity : LPCWSTR -> Cwstring
# pAddress : PEER_ADDRESS* -> Ptr{PEER_ADDRESS}
# pullConnectionId : ULONGLONG* out -> Ptr{UInt64}
# stdcall は 32bit のみ意味を持つ(x64 では無視)。

local ffi = require("ffi")
ffi.cdef[[
int32_t PeerGroupOpenDirectConnection(
    void* hGroup,
    const uint16_t* pwzIdentity,
    void* pAddress,
    uint64_t* pullConnectionId);
]]
local p2p = ffi.load("p2p")
-- p2p.PeerGroupOpenDirectConnection(hGroup, pwzIdentity, pAddress, pullConnectionId)
-- hGroup : void*
-- pwzIdentity : LPCWSTR
-- pAddress : PEER_ADDRESS*
-- pullConnectionId : ULONGLONG* 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('P2P.dll');
const PeerGroupOpenDirectConnection = lib.func('__stdcall', 'PeerGroupOpenDirectConnection', 'int32_t', ['void *', 'str16', 'void *', 'uint64_t *']);
// PeerGroupOpenDirectConnection(hGroup, pwzIdentity, pAddress, pullConnectionId)
// hGroup : void* -> 'void *'
// pwzIdentity : LPCWSTR -> 'str16'
// pAddress : PEER_ADDRESS* -> 'void *'
// pullConnectionId : ULONGLONG* out -> 'uint64_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("P2P.dll", {
  PeerGroupOpenDirectConnection: { parameters: ["pointer", "buffer", "pointer", "pointer"], result: "i32" },
});
// lib.symbols.PeerGroupOpenDirectConnection(hGroup, pwzIdentity, pAddress, pullConnectionId)
// hGroup : void* -> "pointer"
// pwzIdentity : LPCWSTR -> "buffer"
// pAddress : PEER_ADDRESS* -> "pointer"
// pullConnectionId : ULONGLONG* 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
int32_t PeerGroupOpenDirectConnection(
    void* hGroup,
    const uint16_t* pwzIdentity,
    void* pAddress,
    uint64_t* pullConnectionId);
C, "P2P.dll");
// $ffi->PeerGroupOpenDirectConnection(hGroup, pwzIdentity, pAddress, pullConnectionId);
// hGroup : void*
// pwzIdentity : LPCWSTR
// pAddress : PEER_ADDRESS*
// pullConnectionId : ULONGLONG* 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 P2p extends StdCallLibrary {
    P2p INSTANCE = Native.load("p2p", P2p.class);
    int PeerGroupOpenDirectConnection(
        Pointer hGroup,   // void*
        WString pwzIdentity,   // LPCWSTR
        Pointer pAddress,   // PEER_ADDRESS*
        LongByReference pullConnectionId   // ULONGLONG* out
    );
}

@[Link("p2p")]
lib LibP2P
  fun PeerGroupOpenDirectConnection = PeerGroupOpenDirectConnection(
    hGroup : Void*,   # void*
    pwzIdentity : UInt16*,   # LPCWSTR
    pAddress : PEER_ADDRESS*,   # PEER_ADDRESS*
    pullConnectionId : UInt64*   # ULONGLONG* out
  ) : 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 PeerGroupOpenDirectConnectionNative = Int32 Function(Pointer<Void>, Pointer<Utf16>, Pointer<Void>, Pointer<Uint64>);
typedef PeerGroupOpenDirectConnectionDart = int Function(Pointer<Void>, Pointer<Utf16>, Pointer<Void>, Pointer<Uint64>);
final PeerGroupOpenDirectConnection = DynamicLibrary.open('P2P.dll')
    .lookupFunction<PeerGroupOpenDirectConnectionNative, PeerGroupOpenDirectConnectionDart>('PeerGroupOpenDirectConnection');
// hGroup : void* -> Pointer<Void>
// pwzIdentity : LPCWSTR -> Pointer<Utf16>
// pAddress : PEER_ADDRESS* -> Pointer<Void>
// pullConnectionId : ULONGLONG* out -> Pointer<Uint64>
// 文字列は package:ffi の "...".toNativeUtf16()/toNativeUtf8() で変換。

{$mode objfpc}{$H+}
function PeerGroupOpenDirectConnection(
  hGroup: Pointer;   // void*
  pwzIdentity: PWideChar;   // LPCWSTR
  pAddress: Pointer;   // PEER_ADDRESS*
  pullConnectionId: Pointer   // ULONGLONG* out
): Integer; stdcall;
  external 'P2P.dll' name 'PeerGroupOpenDirectConnection';

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

foreign import stdcall safe "PeerGroupOpenDirectConnection"
  c_PeerGroupOpenDirectConnection :: Ptr () -> CWString -> Ptr () -> Ptr Word64 -> IO Int32
-- hGroup : void* -> Ptr ()
-- pwzIdentity : LPCWSTR -> CWString
-- pAddress : PEER_ADDRESS* -> Ptr ()
-- pullConnectionId : ULONGLONG* out -> Ptr Word64
-- 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 peergroupopendirectconnection =
  foreign "PeerGroupOpenDirectConnection"
    ((ptr void) @-> (ptr uint16_t) @-> (ptr void) @-> (ptr uint64_t) @-> returning int32_t)
(* hGroup : void* -> (ptr void) *)
(* pwzIdentity : LPCWSTR -> (ptr uint16_t) *)
(* pAddress : PEER_ADDRESS* -> (ptr void) *)
(* pullConnectionId : ULONGLONG* out -> (ptr uint64_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 p2p (t "P2P.dll"))
(cffi:use-foreign-library p2p)

(cffi:defcfun ("PeerGroupOpenDirectConnection" peer-group-open-direct-connection :convention :stdcall) :int32
  (h-group :pointer)   ; void*
  (pwz-identity (:string :encoding :utf-16le))   ; LPCWSTR
  (p-address :pointer)   ; PEER_ADDRESS*
  (pull-connection-id :pointer))   ; ULONGLONG* out
; isize/usize(INT_PTR/SIZE_T)は x64 前提で :int64/:uint64。x86 では :int32/:uint32。

use Win32::API;
my $PeerGroupOpenDirectConnection = Win32::API::More->new('P2P',
    'int PeerGroupOpenDirectConnection(LPVOID hGroup, LPCWSTR pwzIdentity, LPVOID pAddress, LPVOID pullConnectionId)');
# my $ret = $PeerGroupOpenDirectConnection->Call($hGroup, $pwzIdentity, $pAddress, $pullConnectionId);
# hGroup : void* -> LPVOID
# pwzIdentity : LPCWSTR -> LPCWSTR
# pAddress : PEER_ADDRESS* -> LPVOID
# pullConnectionId : ULONGLONG* out -> LPVOID
# 値渡し構造体は pack() した文字列、または Win32::API::Struct を使用。