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。

#uselib "P2P.dll"
#cfunc global PeerGroupGetProperties "PeerGroupGetProperties" sptr, var
; res = PeerGroupGetProperties(hGroup, ppProperties)
; hGroup : void* -> "sptr"
; ppProperties : PEER_GROUP_PROPERTIES** 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 PeerGroupGetProperties(void* hGroup, PEER_GROUP_PROPERTIES** ppProperties)
#uselib "P2P.dll"
#cfunc global PeerGroupGetProperties "PeerGroupGetProperties" intptr, var
; res = PeerGroupGetProperties(hGroup, ppProperties)
; hGroup : void* -> "intptr"
; ppProperties : PEER_GROUP_PROPERTIES** 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 (
	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)。