PeerGroupConnect

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

HRESULT PeerGroupConnect(
    void* hGroup
);

<DllImport("P2P.dll", ExactSpelling:=True)>
Public Shared Function PeerGroupConnect(
    hGroup As IntPtr   ' void*
) As Integer
End Function

' hGroup : void*
Declare PtrSafe Function PeerGroupConnect Lib "p2p" ( _
    ByVal hGroup 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

PeerGroupConnect = ctypes.windll.p2p.PeerGroupConnect
PeerGroupConnect.restype = ctypes.c_int
PeerGroupConnect.argtypes = [
    ctypes.POINTER(None),  # hGroup : void*
]

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('P2P.dll')
PeerGroupConnect = Fiddle::Function.new(
  lib['PeerGroupConnect'],
  [
    Fiddle::TYPE_VOIDP,  # hGroup : void*
  ],
  Fiddle::TYPE_INT)

#[link(name = "p2p")]
extern "system" {
    fn PeerGroupConnect(
        hGroup: *mut ()  // void*
    ) -> i32;
}
// crates: windows-sys provides ready-made bindings for this API.

$sig = @"
[DllImport("P2P.dll")]
public static extern int PeerGroupConnect(IntPtr hGroup);
"@
$api = Add-Type -MemberDefinition $sig -Name 'P2P_PeerGroupConnect' -Namespace Win32 -PassThru
# $api::PeerGroupConnect(hGroup)

#uselib "P2P.dll"
#func global PeerGroupConnect "PeerGroupConnect" sptr
; PeerGroupConnect hGroup   ; 戻り値は stat
; hGroup : void* -> "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 PeerGroupConnect "PeerGroupConnect" sptr
; res = PeerGroupConnect(hGroup)
; hGroup : void* -> "sptr"

; HRESULT PeerGroupConnect(void* hGroup)
#uselib "P2P.dll"
#cfunc global PeerGroupConnect "PeerGroupConnect" intptr
; res = PeerGroupConnect(hGroup)
; hGroup : void* -> "intptr"

import (
	"golang.org/x/sys/windows"
	"unsafe"
)

var (
	p2p = windows.NewLazySystemDLL("P2P.dll")
	procPeerGroupConnect = p2p.NewProc("PeerGroupConnect")
)

// hGroup (void*)
r1, _, err := procPeerGroupConnect.Call(
	uintptr(hGroup),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // HRESULT

function PeerGroupConnect(
  hGroup: Pointer   // void*
): Integer; stdcall;
  external 'P2P.dll' name 'PeerGroupConnect';

result := DllCall("P2P\PeerGroupConnect"
    , "Ptr", hGroup   ; void*
    , "Int")   ; return: HRESULT

●PeerGroupConnect(hGroup) = DLL("P2P.dll", "int PeerGroupConnect(void*)")
# 呼び出し: PeerGroupConnect(hGroup)
# hGroup : void* -> "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)。