PeerGroupSendData

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

HRESULT PeerGroupSendData(
    void* hGroup,
    ULONGLONG ullConnectionId,
    const GUID* pType,
    DWORD cbData,
    void* pvData
);

<DllImport("P2P.dll", ExactSpelling:=True)>
Public Shared Function PeerGroupSendData(
    hGroup As IntPtr,   ' void*
    ullConnectionId As ULong,   ' ULONGLONG
    ByRef pType As Guid,   ' GUID*
    cbData As UInteger,   ' DWORD
    pvData As IntPtr   ' void*
) As Integer
End Function

' hGroup : void*
' ullConnectionId : ULONGLONG
' pType : GUID*
' cbData : DWORD
' pvData : void*
Declare PtrSafe Function PeerGroupSendData Lib "p2p" ( _
    ByVal hGroup As LongPtr, _
    ByVal ullConnectionId As LongLong, _
    ByVal pType As LongPtr, _
    ByVal cbData As Long, _
    ByVal pvData 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

PeerGroupSendData = ctypes.windll.p2p.PeerGroupSendData
PeerGroupSendData.restype = ctypes.c_int
PeerGroupSendData.argtypes = [
    ctypes.POINTER(None),  # hGroup : void*
    ctypes.c_ulonglong,  # ullConnectionId : ULONGLONG
    ctypes.c_void_p,  # pType : GUID*
    wintypes.DWORD,  # cbData : DWORD
    ctypes.POINTER(None),  # pvData : void*
]

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('P2P.dll')
PeerGroupSendData = Fiddle::Function.new(
  lib['PeerGroupSendData'],
  [
    Fiddle::TYPE_VOIDP,  # hGroup : void*
    -Fiddle::TYPE_LONG_LONG,  # ullConnectionId : ULONGLONG
    Fiddle::TYPE_VOIDP,  # pType : GUID*
    -Fiddle::TYPE_INT,  # cbData : DWORD
    Fiddle::TYPE_VOIDP,  # pvData : void*
  ],
  Fiddle::TYPE_INT)

#[link(name = "p2p")]
extern "system" {
    fn PeerGroupSendData(
        hGroup: *mut (),  // void*
        ullConnectionId: u64,  // ULONGLONG
        pType: *const GUID,  // GUID*
        cbData: u32,  // DWORD
        pvData: *mut ()  // void*
    ) -> i32;
}
// crates: windows-sys provides ready-made bindings for this API.

$sig = @"
[DllImport("P2P.dll")]
public static extern int PeerGroupSendData(IntPtr hGroup, ulong ullConnectionId, ref Guid pType, uint cbData, IntPtr pvData);
"@
$api = Add-Type -MemberDefinition $sig -Name 'P2P_PeerGroupSendData' -Namespace Win32 -PassThru
# $api::PeerGroupSendData(hGroup, ullConnectionId, pType, cbData, pvData)

#uselib "P2P.dll"
#func global PeerGroupSendData "PeerGroupSendData" sptr, sptr, sptr, sptr, sptr
; PeerGroupSendData hGroup, ullConnectionId, varptr(pType), cbData, pvData   ; 戻り値は stat
; hGroup : void* -> "sptr"
; ullConnectionId : ULONGLONG -> "sptr"
; pType : GUID* -> "sptr"
; cbData : DWORD -> "sptr"
; pvData : void* -> "sptr"
; ※HSP3.7は int64 引数(64bit値渡し)に非対応です。
; ※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 PeerGroupSendData "PeerGroupSendData" sptr, int64, var, int, sptr
; res = PeerGroupSendData(hGroup, ullConnectionId, pType, cbData, pvData)
; hGroup : void* -> "sptr"
; ullConnectionId : ULONGLONG -> "int64"
; pType : GUID* -> "var"
; cbData : DWORD -> "int"
; pvData : void* -> "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。
; ※int64 引数の DLL 値渡しは x64 ランタイム(hsp3_64)のみ対応(x86 は未対応)。

; HRESULT PeerGroupSendData(void* hGroup, ULONGLONG ullConnectionId, GUID* pType, DWORD cbData, void* pvData)
#uselib "P2P.dll"
#cfunc global PeerGroupSendData "PeerGroupSendData" intptr, int64, var, int, intptr
; res = PeerGroupSendData(hGroup, ullConnectionId, pType, cbData, pvData)
; hGroup : void* -> "intptr"
; ullConnectionId : ULONGLONG -> "int64"
; pType : GUID* -> "var"
; cbData : DWORD -> "int"
; pvData : void* -> "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 (
	p2p = windows.NewLazySystemDLL("P2P.dll")
	procPeerGroupSendData = p2p.NewProc("PeerGroupSendData")
)

// hGroup (void*), ullConnectionId (ULONGLONG), pType (GUID*), cbData (DWORD), pvData (void*)
r1, _, err := procPeerGroupSendData.Call(
	uintptr(hGroup),
	uintptr(ullConnectionId),
	uintptr(pType),
	uintptr(cbData),
	uintptr(pvData),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // HRESULT

function PeerGroupSendData(
  hGroup: Pointer;   // void*
  ullConnectionId: UInt64;   // ULONGLONG
  pType: PGUID;   // GUID*
  cbData: DWORD;   // DWORD
  pvData: Pointer   // void*
): Integer; stdcall;
  external 'P2P.dll' name 'PeerGroupSendData';

result := DllCall("P2P\PeerGroupSendData"
    , "Ptr", hGroup   ; void*
    , "Int64", ullConnectionId   ; ULONGLONG
    , "Ptr", pType   ; GUID*
    , "UInt", cbData   ; DWORD
    , "Ptr", pvData   ; void*
    , "Int")   ; return: HRESULT

●PeerGroupSendData(hGroup, ullConnectionId, pType, cbData, pvData) = DLL("P2P.dll", "int PeerGroupSendData(void*, qword, void*, dword, void*)")
# 呼び出し: PeerGroupSendData(hGroup, ullConnectionId, pType, cbData, pvData)
# hGroup : void* -> "void*"
# ullConnectionId : ULONGLONG -> "qword"
# pType : GUID* -> "void*"
# cbData : DWORD -> "dword"
# pvData : 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)。