PeerGroupRegisterEvent

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

HRESULT PeerGroupRegisterEvent(
    void* hGroup,
    HANDLE hEvent,
    DWORD cEventRegistration,
    PEER_GROUP_EVENT_REGISTRATION* pEventRegistrations,
    void** phPeerEvent
);

<DllImport("P2P.dll", ExactSpelling:=True)>
Public Shared Function PeerGroupRegisterEvent(
    hGroup As IntPtr,   ' void*
    hEvent As IntPtr,   ' HANDLE
    cEventRegistration As UInteger,   ' DWORD
    pEventRegistrations As IntPtr,   ' PEER_GROUP_EVENT_REGISTRATION*
    phPeerEvent As IntPtr   ' void** out
) As Integer
End Function

' hGroup : void*
' hEvent : HANDLE
' cEventRegistration : DWORD
' pEventRegistrations : PEER_GROUP_EVENT_REGISTRATION*
' phPeerEvent : void** out
Declare PtrSafe Function PeerGroupRegisterEvent Lib "p2p" ( _
    ByVal hGroup As LongPtr, _
    ByVal hEvent As LongPtr, _
    ByVal cEventRegistration As Long, _
    ByVal pEventRegistrations As LongPtr, _
    ByVal phPeerEvent 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

PeerGroupRegisterEvent = ctypes.windll.p2p.PeerGroupRegisterEvent
PeerGroupRegisterEvent.restype = ctypes.c_int
PeerGroupRegisterEvent.argtypes = [
    ctypes.POINTER(None),  # hGroup : void*
    wintypes.HANDLE,  # hEvent : HANDLE
    wintypes.DWORD,  # cEventRegistration : DWORD
    ctypes.c_void_p,  # pEventRegistrations : PEER_GROUP_EVENT_REGISTRATION*
    ctypes.c_void_p,  # phPeerEvent : void** out
]

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('P2P.dll')
PeerGroupRegisterEvent = Fiddle::Function.new(
  lib['PeerGroupRegisterEvent'],
  [
    Fiddle::TYPE_VOIDP,  # hGroup : void*
    Fiddle::TYPE_VOIDP,  # hEvent : HANDLE
    -Fiddle::TYPE_INT,  # cEventRegistration : DWORD
    Fiddle::TYPE_VOIDP,  # pEventRegistrations : PEER_GROUP_EVENT_REGISTRATION*
    Fiddle::TYPE_VOIDP,  # phPeerEvent : void** out
  ],
  Fiddle::TYPE_INT)

#[link(name = "p2p")]
extern "system" {
    fn PeerGroupRegisterEvent(
        hGroup: *mut (),  // void*
        hEvent: *mut core::ffi::c_void,  // HANDLE
        cEventRegistration: u32,  // DWORD
        pEventRegistrations: *mut PEER_GROUP_EVENT_REGISTRATION,  // PEER_GROUP_EVENT_REGISTRATION*
        phPeerEvent: *mut *mut ()  // void** out
    ) -> i32;
}
// crates: windows-sys provides ready-made bindings for this API.

$sig = @"
[DllImport("P2P.dll")]
public static extern int PeerGroupRegisterEvent(IntPtr hGroup, IntPtr hEvent, uint cEventRegistration, IntPtr pEventRegistrations, IntPtr phPeerEvent);
"@
$api = Add-Type -MemberDefinition $sig -Name 'P2P_PeerGroupRegisterEvent' -Namespace Win32 -PassThru
# $api::PeerGroupRegisterEvent(hGroup, hEvent, cEventRegistration, pEventRegistrations, phPeerEvent)

#uselib "P2P.dll"
#func global PeerGroupRegisterEvent "PeerGroupRegisterEvent" sptr, sptr, sptr, sptr, sptr
; PeerGroupRegisterEvent hGroup, hEvent, cEventRegistration, varptr(pEventRegistrations), phPeerEvent   ; 戻り値は stat
; hGroup : void* -> "sptr"
; hEvent : HANDLE -> "sptr"
; cEventRegistration : DWORD -> "sptr"
; pEventRegistrations : PEER_GROUP_EVENT_REGISTRATION* -> "sptr"
; phPeerEvent : void** 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。

#uselib "P2P.dll"
#cfunc global PeerGroupRegisterEvent "PeerGroupRegisterEvent" sptr, sptr, int, var, sptr
; res = PeerGroupRegisterEvent(hGroup, hEvent, cEventRegistration, pEventRegistrations, phPeerEvent)
; hGroup : void* -> "sptr"
; hEvent : HANDLE -> "sptr"
; cEventRegistration : DWORD -> "int"
; pEventRegistrations : PEER_GROUP_EVENT_REGISTRATION* -> "var"
; phPeerEvent : void** out -> "sptr"
; ※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。

; HRESULT PeerGroupRegisterEvent(void* hGroup, HANDLE hEvent, DWORD cEventRegistration, PEER_GROUP_EVENT_REGISTRATION* pEventRegistrations, void** phPeerEvent)
#uselib "P2P.dll"
#cfunc global PeerGroupRegisterEvent "PeerGroupRegisterEvent" intptr, intptr, int, var, intptr
; res = PeerGroupRegisterEvent(hGroup, hEvent, cEventRegistration, pEventRegistrations, phPeerEvent)
; hGroup : void* -> "intptr"
; hEvent : HANDLE -> "intptr"
; cEventRegistration : DWORD -> "int"
; pEventRegistrations : PEER_GROUP_EVENT_REGISTRATION* -> "var"
; phPeerEvent : void** out -> "intptr"
; ※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 (
	p2p = windows.NewLazySystemDLL("P2P.dll")
	procPeerGroupRegisterEvent = p2p.NewProc("PeerGroupRegisterEvent")
)

// hGroup (void*), hEvent (HANDLE), cEventRegistration (DWORD), pEventRegistrations (PEER_GROUP_EVENT_REGISTRATION*), phPeerEvent (void** out)
r1, _, err := procPeerGroupRegisterEvent.Call(
	uintptr(hGroup),
	uintptr(hEvent),
	uintptr(cEventRegistration),
	uintptr(pEventRegistrations),
	uintptr(phPeerEvent),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // HRESULT

function PeerGroupRegisterEvent(
  hGroup: Pointer;   // void*
  hEvent: THandle;   // HANDLE
  cEventRegistration: DWORD;   // DWORD
  pEventRegistrations: Pointer;   // PEER_GROUP_EVENT_REGISTRATION*
  phPeerEvent: Pointer   // void** out
): Integer; stdcall;
  external 'P2P.dll' name 'PeerGroupRegisterEvent';

result := DllCall("P2P\PeerGroupRegisterEvent"
    , "Ptr", hGroup   ; void*
    , "Ptr", hEvent   ; HANDLE
    , "UInt", cEventRegistration   ; DWORD
    , "Ptr", pEventRegistrations   ; PEER_GROUP_EVENT_REGISTRATION*
    , "Ptr", phPeerEvent   ; void** out
    , "Int")   ; return: HRESULT

●PeerGroupRegisterEvent(hGroup, hEvent, cEventRegistration, pEventRegistrations, phPeerEvent) = DLL("P2P.dll", "int PeerGroupRegisterEvent(void*, void*, dword, void*, void*)")
# 呼び出し: PeerGroupRegisterEvent(hGroup, hEvent, cEventRegistration, pEventRegistrations, phPeerEvent)
# hGroup : void* -> "void*"
# hEvent : HANDLE -> "void*"
# cEventRegistration : DWORD -> "dword"
# pEventRegistrations : PEER_GROUP_EVENT_REGISTRATION* -> "void*"
# phPeerEvent : void** 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)。