PeerGraphCreate

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

HRESULT PeerGraphCreate(
    PEER_GRAPH_PROPERTIES* pGraphProperties,
    LPCWSTR pwzDatabaseName,
    PEER_SECURITY_INTERFACE* pSecurityInterface,   // optional
    void** phGraph
);

<DllImport("P2PGRAPH.dll", ExactSpelling:=True)>
Public Shared Function PeerGraphCreate(
    pGraphProperties As IntPtr,   ' PEER_GRAPH_PROPERTIES*
    <MarshalAs(UnmanagedType.LPWStr)> pwzDatabaseName As String,   ' LPCWSTR
    pSecurityInterface As IntPtr,   ' PEER_SECURITY_INTERFACE* optional
    phGraph As IntPtr   ' void** out
) As Integer
End Function

' pGraphProperties : PEER_GRAPH_PROPERTIES*
' pwzDatabaseName : LPCWSTR
' pSecurityInterface : PEER_SECURITY_INTERFACE* optional
' phGraph : void** out
Declare PtrSafe Function PeerGraphCreate Lib "p2pgraph" ( _
    ByVal pGraphProperties As LongPtr, _
    ByVal pwzDatabaseName As LongPtr, _
    ByVal pSecurityInterface As LongPtr, _
    ByVal phGraph 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

PeerGraphCreate = ctypes.windll.p2pgraph.PeerGraphCreate
PeerGraphCreate.restype = ctypes.c_int
PeerGraphCreate.argtypes = [
    ctypes.c_void_p,  # pGraphProperties : PEER_GRAPH_PROPERTIES*
    wintypes.LPCWSTR,  # pwzDatabaseName : LPCWSTR
    ctypes.c_void_p,  # pSecurityInterface : PEER_SECURITY_INTERFACE* optional
    ctypes.c_void_p,  # phGraph : void** out
]

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('P2PGRAPH.dll')
PeerGraphCreate = Fiddle::Function.new(
  lib['PeerGraphCreate'],
  [
    Fiddle::TYPE_VOIDP,  # pGraphProperties : PEER_GRAPH_PROPERTIES*
    Fiddle::TYPE_VOIDP,  # pwzDatabaseName : LPCWSTR
    Fiddle::TYPE_VOIDP,  # pSecurityInterface : PEER_SECURITY_INTERFACE* optional
    Fiddle::TYPE_VOIDP,  # phGraph : void** out
  ],
  Fiddle::TYPE_INT)

#[link(name = "p2pgraph")]
extern "system" {
    fn PeerGraphCreate(
        pGraphProperties: *mut PEER_GRAPH_PROPERTIES,  // PEER_GRAPH_PROPERTIES*
        pwzDatabaseName: *const u16,  // LPCWSTR
        pSecurityInterface: *mut PEER_SECURITY_INTERFACE,  // PEER_SECURITY_INTERFACE* optional
        phGraph: *mut *mut ()  // void** out
    ) -> i32;
}
// crates: windows-sys provides ready-made bindings for this API.

$sig = @"
[DllImport("P2PGRAPH.dll")]
public static extern int PeerGraphCreate(IntPtr pGraphProperties, [MarshalAs(UnmanagedType.LPWStr)] string pwzDatabaseName, IntPtr pSecurityInterface, IntPtr phGraph);
"@
$api = Add-Type -MemberDefinition $sig -Name 'P2PGRAPH_PeerGraphCreate' -Namespace Win32 -PassThru
# $api::PeerGraphCreate(pGraphProperties, pwzDatabaseName, pSecurityInterface, phGraph)

#uselib "P2PGRAPH.dll"
#func global PeerGraphCreate "PeerGraphCreate" sptr, sptr, sptr, sptr
; PeerGraphCreate varptr(pGraphProperties), pwzDatabaseName, varptr(pSecurityInterface), phGraph   ; 戻り値は stat
; pGraphProperties : PEER_GRAPH_PROPERTIES* -> "sptr"
; pwzDatabaseName : LPCWSTR -> "sptr"
; pSecurityInterface : PEER_SECURITY_INTERFACE* optional -> "sptr"
; phGraph : 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 "P2PGRAPH.dll"
#cfunc global PeerGraphCreate "PeerGraphCreate" var, wstr, var, sptr
; res = PeerGraphCreate(pGraphProperties, pwzDatabaseName, pSecurityInterface, phGraph)
; pGraphProperties : PEER_GRAPH_PROPERTIES* -> "var"
; pwzDatabaseName : LPCWSTR -> "wstr"
; pSecurityInterface : PEER_SECURITY_INTERFACE* optional -> "var"
; phGraph : 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 PeerGraphCreate(PEER_GRAPH_PROPERTIES* pGraphProperties, LPCWSTR pwzDatabaseName, PEER_SECURITY_INTERFACE* pSecurityInterface, void** phGraph)
#uselib "P2PGRAPH.dll"
#cfunc global PeerGraphCreate "PeerGraphCreate" var, wstr, var, intptr
; res = PeerGraphCreate(pGraphProperties, pwzDatabaseName, pSecurityInterface, phGraph)
; pGraphProperties : PEER_GRAPH_PROPERTIES* -> "var"
; pwzDatabaseName : LPCWSTR -> "wstr"
; pSecurityInterface : PEER_SECURITY_INTERFACE* optional -> "var"
; phGraph : 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 (
	p2pgraph = windows.NewLazySystemDLL("P2PGRAPH.dll")
	procPeerGraphCreate = p2pgraph.NewProc("PeerGraphCreate")
)

// pGraphProperties (PEER_GRAPH_PROPERTIES*), pwzDatabaseName (LPCWSTR), pSecurityInterface (PEER_SECURITY_INTERFACE* optional), phGraph (void** out)
r1, _, err := procPeerGraphCreate.Call(
	uintptr(pGraphProperties),
	uintptr(unsafe.Pointer(windows.StringToUTF16Ptr(pwzDatabaseName))),
	uintptr(pSecurityInterface),
	uintptr(phGraph),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // HRESULT

function PeerGraphCreate(
  pGraphProperties: Pointer;   // PEER_GRAPH_PROPERTIES*
  pwzDatabaseName: PWideChar;   // LPCWSTR
  pSecurityInterface: Pointer;   // PEER_SECURITY_INTERFACE* optional
  phGraph: Pointer   // void** out
): Integer; stdcall;
  external 'P2PGRAPH.dll' name 'PeerGraphCreate';

result := DllCall("P2PGRAPH\PeerGraphCreate"
    , "Ptr", pGraphProperties   ; PEER_GRAPH_PROPERTIES*
    , "WStr", pwzDatabaseName   ; LPCWSTR
    , "Ptr", pSecurityInterface   ; PEER_SECURITY_INTERFACE* optional
    , "Ptr", phGraph   ; void** out
    , "Int")   ; return: HRESULT

●PeerGraphCreate(pGraphProperties, pwzDatabaseName, pSecurityInterface, phGraph) = DLL("P2PGRAPH.dll", "int PeerGraphCreate(void*, char*, void*, void*)")
# 呼び出し: PeerGraphCreate(pGraphProperties, pwzDatabaseName, pSecurityInterface, phGraph)
# pGraphProperties : PEER_GRAPH_PROPERTIES* -> "void*"
# pwzDatabaseName : LPCWSTR -> "char*"
# pSecurityInterface : PEER_SECURITY_INTERFACE* optional -> "void*"
# phGraph : 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)。