PeerGraphGetEventData

// P2PGRAPH.dll
#include <windows.h>

HRESULT PeerGraphGetEventData(
    void* hPeerEvent,
    PEER_GRAPH_EVENT_DATA** ppEventData
);

<DllImport("P2PGRAPH.dll", ExactSpelling:=True)>
Public Shared Function PeerGraphGetEventData(
    hPeerEvent As IntPtr,   ' void*
    ppEventData As IntPtr   ' PEER_GRAPH_EVENT_DATA** out
) As Integer
End Function

' hPeerEvent : void*
' ppEventData : PEER_GRAPH_EVENT_DATA** out
Declare PtrSafe Function PeerGraphGetEventData Lib "p2pgraph" ( _
    ByVal hPeerEvent As LongPtr, _
    ByVal ppEventData 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

PeerGraphGetEventData = ctypes.windll.p2pgraph.PeerGraphGetEventData
PeerGraphGetEventData.restype = ctypes.c_int
PeerGraphGetEventData.argtypes = [
    ctypes.POINTER(None),  # hPeerEvent : void*
    ctypes.c_void_p,  # ppEventData : PEER_GRAPH_EVENT_DATA** out
]

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('P2PGRAPH.dll')
PeerGraphGetEventData = Fiddle::Function.new(
  lib['PeerGraphGetEventData'],
  [
    Fiddle::TYPE_VOIDP,  # hPeerEvent : void*
    Fiddle::TYPE_VOIDP,  # ppEventData : PEER_GRAPH_EVENT_DATA** out
  ],
  Fiddle::TYPE_INT)

#[link(name = "p2pgraph")]
extern "system" {
    fn PeerGraphGetEventData(
        hPeerEvent: *mut (),  // void*
        ppEventData: *mut *mut PEER_GRAPH_EVENT_DATA  // PEER_GRAPH_EVENT_DATA** out
    ) -> i32;
}
// crates: windows-sys provides ready-made bindings for this API.

$sig = @"
[DllImport("P2PGRAPH.dll")]
public static extern int PeerGraphGetEventData(IntPtr hPeerEvent, IntPtr ppEventData);
"@
$api = Add-Type -MemberDefinition $sig -Name 'P2PGRAPH_PeerGraphGetEventData' -Namespace Win32 -PassThru
# $api::PeerGraphGetEventData(hPeerEvent, ppEventData)

#uselib "P2PGRAPH.dll"
#func global PeerGraphGetEventData "PeerGraphGetEventData" sptr, sptr
; PeerGraphGetEventData hPeerEvent, varptr(ppEventData)   ; 戻り値は stat
; hPeerEvent : void* -> "sptr"
; ppEventData : PEER_GRAPH_EVENT_DATA** 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 "P2PGRAPH.dll"
#cfunc global PeerGraphGetEventData "PeerGraphGetEventData" sptr, var
; res = PeerGraphGetEventData(hPeerEvent, ppEventData)
; hPeerEvent : void* -> "sptr"
; ppEventData : PEER_GRAPH_EVENT_DATA** out -> "var"
; ※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 PeerGraphGetEventData(void* hPeerEvent, PEER_GRAPH_EVENT_DATA** ppEventData)
#uselib "P2PGRAPH.dll"
#cfunc global PeerGraphGetEventData "PeerGraphGetEventData" intptr, var
; res = PeerGraphGetEventData(hPeerEvent, ppEventData)
; hPeerEvent : void* -> "intptr"
; ppEventData : PEER_GRAPH_EVENT_DATA** out -> "var"
; ※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 (
	p2pgraph = windows.NewLazySystemDLL("P2PGRAPH.dll")
	procPeerGraphGetEventData = p2pgraph.NewProc("PeerGraphGetEventData")
)

// hPeerEvent (void*), ppEventData (PEER_GRAPH_EVENT_DATA** out)
r1, _, err := procPeerGraphGetEventData.Call(
	uintptr(hPeerEvent),
	uintptr(ppEventData),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // HRESULT

function PeerGraphGetEventData(
  hPeerEvent: Pointer;   // void*
  ppEventData: Pointer   // PEER_GRAPH_EVENT_DATA** out
): Integer; stdcall;
  external 'P2PGRAPH.dll' name 'PeerGraphGetEventData';

result := DllCall("P2PGRAPH\PeerGraphGetEventData"
    , "Ptr", hPeerEvent   ; void*
    , "Ptr", ppEventData   ; PEER_GRAPH_EVENT_DATA** out
    , "Int")   ; return: HRESULT

●PeerGraphGetEventData(hPeerEvent, ppEventData) = DLL("P2PGRAPH.dll", "int PeerGraphGetEventData(void*, void*)")
# 呼び出し: PeerGraphGetEventData(hPeerEvent, ppEventData)
# hPeerEvent : void* -> "void*"
# ppEventData : PEER_GRAPH_EVENT_DATA** 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)。