PeerGroupGetProperties

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

HRESULT PeerGroupGetProperties(
    void* hGroup,
    PEER_GROUP_PROPERTIES** ppProperties
);

<DllImport("P2P.dll", ExactSpelling:=True)>
Public Shared Function PeerGroupGetProperties(
    hGroup As IntPtr,   ' void*
    ppProperties As IntPtr   ' PEER_GROUP_PROPERTIES** out
) As Integer
End Function

' hGroup : void*
' ppProperties : PEER_GROUP_PROPERTIES** out
Declare PtrSafe Function PeerGroupGetProperties Lib "p2p" ( _
    ByVal hGroup As LongPtr, _
    ByVal ppProperties 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

PeerGroupGetProperties = ctypes.windll.p2p.PeerGroupGetProperties
PeerGroupGetProperties.restype = ctypes.c_int
PeerGroupGetProperties.argtypes = [
    ctypes.POINTER(None),  # hGroup : void*
    ctypes.c_void_p,  # ppProperties : PEER_GROUP_PROPERTIES** out
]

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('P2P.dll')
PeerGroupGetProperties = Fiddle::Function.new(
  lib['PeerGroupGetProperties'],
  [
    Fiddle::TYPE_VOIDP,  # hGroup : void*
    Fiddle::TYPE_VOIDP,  # ppProperties : PEER_GROUP_PROPERTIES** out
  ],
  Fiddle::TYPE_INT)

#[link(name = "p2p")]
extern "system" {
    fn PeerGroupGetProperties(
        hGroup: *mut (),  // void*
        ppProperties: *mut *mut PEER_GROUP_PROPERTIES  // PEER_GROUP_PROPERTIES** out
    ) -> i32;
}
// crates: windows-sys provides ready-made bindings for this API.

$sig = @"
[DllImport("P2P.dll")]
public static extern int PeerGroupGetProperties(IntPtr hGroup, IntPtr ppProperties);
"@
$api = Add-Type -MemberDefinition $sig -Name 'P2P_PeerGroupGetProperties' -Namespace Win32 -PassThru
# $api::PeerGroupGetProperties(hGroup, ppProperties)

#uselib "P2P.dll"
#func global PeerGroupGetProperties "PeerGroupGetProperties" sptr, sptr
; PeerGroupGetProperties hGroup, varptr(ppProperties)   ; 戻り値は stat
; hGroup : void* -> "sptr"
; ppProperties : PEER_GROUP_PROPERTIES** 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")
	procPeerGroupGetProperties = p2p.NewProc("PeerGroupGetProperties")
)

// hGroup (void*), ppProperties (PEER_GROUP_PROPERTIES** out)
r1, _, err := procPeerGroupGetProperties.Call(
	uintptr(hGroup),
	uintptr(ppProperties),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // HRESULT

function PeerGroupGetProperties(
  hGroup: Pointer;   // void*
  ppProperties: Pointer   // PEER_GROUP_PROPERTIES** out
): Integer; stdcall;
  external 'P2P.dll' name 'PeerGroupGetProperties';

result := DllCall("P2P\PeerGroupGetProperties"
    , "Ptr", hGroup   ; void*
    , "Ptr", ppProperties   ; PEER_GROUP_PROPERTIES** out
    , "Int")   ; return: HRESULT

●PeerGroupGetProperties(hGroup, ppProperties) = DLL("P2P.dll", "int PeerGroupGetProperties(void*, void*)")
# 呼び出し: PeerGroupGetProperties(hGroup, ppProperties)
# hGroup : void* -> "void*"
# ppProperties : PEER_GROUP_PROPERTIES** 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 PeerGroupGetProperties(
    hGroup: ?*anyopaque, // void*
    ppProperties: [*c][*c]PEER_GROUP_PROPERTIES // PEER_GROUP_PROPERTIES** out
) callconv(std.os.windows.WINAPI) i32;

proc PeerGroupGetProperties(
    hGroup: pointer,  # void*
    ppProperties: ptr PEER_GROUP_PROPERTIES  # PEER_GROUP_PROPERTIES** out
): int32 {.importc: "PeerGroupGetProperties", stdcall, dynlib: "P2P.dll".}

pragma(lib, "p2p");
extern(Windows)
int PeerGroupGetProperties(
    void* hGroup,   // void*
    PEER_GROUP_PROPERTIES** ppProperties   // PEER_GROUP_PROPERTIES** out
);

ccall((:PeerGroupGetProperties, "P2P.dll"), stdcall, Int32,
      (Ptr{Cvoid}, Ptr{PEER_GROUP_PROPERTIES}),
      hGroup, ppProperties)
# hGroup : void* -> Ptr{Cvoid}
# ppProperties : PEER_GROUP_PROPERTIES** out -> Ptr{PEER_GROUP_PROPERTIES}
# stdcall は 32bit のみ意味を持つ(x64 では無視)。

local ffi = require("ffi")
ffi.cdef[[
int32_t PeerGroupGetProperties(
    void* hGroup,
    void* ppProperties);
]]
local p2p = ffi.load("p2p")
-- p2p.PeerGroupGetProperties(hGroup, ppProperties)
-- hGroup : void*
-- ppProperties : PEER_GROUP_PROPERTIES** 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 PeerGroupGetProperties = lib.func('__stdcall', 'PeerGroupGetProperties', 'int32_t', ['void *', 'void *']);
// PeerGroupGetProperties(hGroup, ppProperties)
// hGroup : void* -> 'void *'
// ppProperties : PEER_GROUP_PROPERTIES** 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("P2P.dll", {
  PeerGroupGetProperties: { parameters: ["pointer", "pointer"], result: "i32" },
});
// lib.symbols.PeerGroupGetProperties(hGroup, ppProperties)
// hGroup : void* -> "pointer"
// ppProperties : PEER_GROUP_PROPERTIES** 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 PeerGroupGetProperties(
    void* hGroup,
    void* ppProperties);
C, "P2P.dll");
// $ffi->PeerGroupGetProperties(hGroup, ppProperties);
// hGroup : void*
// ppProperties : PEER_GROUP_PROPERTIES** 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 PeerGroupGetProperties(
        Pointer hGroup,   // void*
        Pointer ppProperties   // PEER_GROUP_PROPERTIES** out
    );
}

@[Link("p2p")]
lib LibP2P
  fun PeerGroupGetProperties = PeerGroupGetProperties(
    hGroup : Void*,   # void*
    ppProperties : PEER_GROUP_PROPERTIES**   # PEER_GROUP_PROPERTIES** 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 PeerGroupGetPropertiesNative = Int32 Function(Pointer<Void>, Pointer<Void>);
typedef PeerGroupGetPropertiesDart = int Function(Pointer<Void>, Pointer<Void>);
final PeerGroupGetProperties = DynamicLibrary.open('P2P.dll')
    .lookupFunction<PeerGroupGetPropertiesNative, PeerGroupGetPropertiesDart>('PeerGroupGetProperties');
// hGroup : void* -> Pointer<Void>
// ppProperties : PEER_GROUP_PROPERTIES** out -> Pointer<Void>
// 文字列は package:ffi の "...".toNativeUtf16()/toNativeUtf8() で変換。

{$mode objfpc}{$H+}
function PeerGroupGetProperties(
  hGroup: Pointer;   // void*
  ppProperties: Pointer   // PEER_GROUP_PROPERTIES** out
): Integer; stdcall;
  external 'P2P.dll' name 'PeerGroupGetProperties';

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

foreign import stdcall safe "PeerGroupGetProperties"
  c_PeerGroupGetProperties :: Ptr () -> Ptr () -> IO Int32
-- hGroup : void* -> Ptr ()
-- ppProperties : PEER_GROUP_PROPERTIES** 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 peergroupgetproperties =
  foreign "PeerGroupGetProperties"
    ((ptr void) @-> (ptr void) @-> returning int32_t)
(* hGroup : void* -> (ptr void) *)
(* ppProperties : PEER_GROUP_PROPERTIES** 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 p2p (t "P2P.dll"))
(cffi:use-foreign-library p2p)

(cffi:defcfun ("PeerGroupGetProperties" peer-group-get-properties :convention :stdcall) :int32
  (h-group :pointer)   ; void*
  (pp-properties :pointer))   ; PEER_GROUP_PROPERTIES** out
; isize/usize(INT_PTR/SIZE_T)は x64 前提で :int64/:uint64。x86 では :int32/:uint32。

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