PeerGraphConnect

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

HRESULT PeerGraphConnect(
    void* hGraph,
    LPCWSTR pwzPeerId,   // optional
    PEER_ADDRESS* pAddress,
    ULONGLONG* pullConnectionId
);

<DllImport("P2PGRAPH.dll", ExactSpelling:=True)>
Public Shared Function PeerGraphConnect(
    hGraph As IntPtr,   ' void*
    <MarshalAs(UnmanagedType.LPWStr)> pwzPeerId As String,   ' LPCWSTR optional
    pAddress As IntPtr,   ' PEER_ADDRESS*
    <Out> ByRef pullConnectionId As ULong   ' ULONGLONG* out
) As Integer
End Function

' hGraph : void*
' pwzPeerId : LPCWSTR optional
' pAddress : PEER_ADDRESS*
' pullConnectionId : ULONGLONG* out
Declare PtrSafe Function PeerGraphConnect Lib "p2pgraph" ( _
    ByVal hGraph As LongPtr, _
    ByVal pwzPeerId 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

PeerGraphConnect = ctypes.windll.p2pgraph.PeerGraphConnect
PeerGraphConnect.restype = ctypes.c_int
PeerGraphConnect.argtypes = [
    ctypes.POINTER(None),  # hGraph : void*
    wintypes.LPCWSTR,  # pwzPeerId : LPCWSTR optional
    ctypes.c_void_p,  # pAddress : PEER_ADDRESS*
    ctypes.POINTER(ctypes.c_ulonglong),  # pullConnectionId : ULONGLONG* out
]

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('P2PGRAPH.dll')
PeerGraphConnect = Fiddle::Function.new(
  lib['PeerGraphConnect'],
  [
    Fiddle::TYPE_VOIDP,  # hGraph : void*
    Fiddle::TYPE_VOIDP,  # pwzPeerId : LPCWSTR optional
    Fiddle::TYPE_VOIDP,  # pAddress : PEER_ADDRESS*
    Fiddle::TYPE_VOIDP,  # pullConnectionId : ULONGLONG* out
  ],
  Fiddle::TYPE_INT)

#[link(name = "p2pgraph")]
extern "system" {
    fn PeerGraphConnect(
        hGraph: *mut (),  // void*
        pwzPeerId: *const u16,  // LPCWSTR optional
        pAddress: *mut PEER_ADDRESS,  // PEER_ADDRESS*
        pullConnectionId: *mut u64  // ULONGLONG* out
    ) -> i32;
}
// crates: windows-sys provides ready-made bindings for this API.

$sig = @"
[DllImport("P2PGRAPH.dll")]
public static extern int PeerGraphConnect(IntPtr hGraph, [MarshalAs(UnmanagedType.LPWStr)] string pwzPeerId, IntPtr pAddress, out ulong pullConnectionId);
"@
$api = Add-Type -MemberDefinition $sig -Name 'P2PGRAPH_PeerGraphConnect' -Namespace Win32 -PassThru
# $api::PeerGraphConnect(hGraph, pwzPeerId, pAddress, pullConnectionId)

#uselib "P2PGRAPH.dll"
#func global PeerGraphConnect "PeerGraphConnect" sptr, sptr, sptr, sptr
; PeerGraphConnect hGraph, pwzPeerId, varptr(pAddress), varptr(pullConnectionId)   ; 戻り値は stat
; hGraph : void* -> "sptr"
; pwzPeerId : LPCWSTR optional -> "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。

#uselib "P2PGRAPH.dll"
#cfunc global PeerGraphConnect "PeerGraphConnect" sptr, wstr, var, var
; res = PeerGraphConnect(hGraph, pwzPeerId, pAddress, pullConnectionId)
; hGraph : void* -> "sptr"
; pwzPeerId : LPCWSTR optional -> "wstr"
; pAddress : PEER_ADDRESS* -> "var"
; pullConnectionId : ULONGLONG* 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 PeerGraphConnect(void* hGraph, LPCWSTR pwzPeerId, PEER_ADDRESS* pAddress, ULONGLONG* pullConnectionId)
#uselib "P2PGRAPH.dll"
#cfunc global PeerGraphConnect "PeerGraphConnect" intptr, wstr, var, var
; res = PeerGraphConnect(hGraph, pwzPeerId, pAddress, pullConnectionId)
; hGraph : void* -> "intptr"
; pwzPeerId : LPCWSTR optional -> "wstr"
; pAddress : PEER_ADDRESS* -> "var"
; pullConnectionId : ULONGLONG* 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")
	procPeerGraphConnect = p2pgraph.NewProc("PeerGraphConnect")
)

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

function PeerGraphConnect(
  hGraph: Pointer;   // void*
  pwzPeerId: PWideChar;   // LPCWSTR optional
  pAddress: Pointer;   // PEER_ADDRESS*
  pullConnectionId: Pointer   // ULONGLONG* out
): Integer; stdcall;
  external 'P2PGRAPH.dll' name 'PeerGraphConnect';

result := DllCall("P2PGRAPH\PeerGraphConnect"
    , "Ptr", hGraph   ; void*
    , "WStr", pwzPeerId   ; LPCWSTR optional
    , "Ptr", pAddress   ; PEER_ADDRESS*
    , "Ptr", pullConnectionId   ; ULONGLONG* out
    , "Int")   ; return: HRESULT

●PeerGraphConnect(hGraph, pwzPeerId, pAddress, pullConnectionId) = DLL("P2PGRAPH.dll", "int PeerGraphConnect(void*, char*, void*, void*)")
# 呼び出し: PeerGraphConnect(hGraph, pwzPeerId, pAddress, pullConnectionId)
# hGraph : void* -> "void*"
# pwzPeerId : LPCWSTR optional -> "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)。