PeerDistStartup

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

DWORD PeerDistStartup(
    DWORD dwVersionRequested,
    INT_PTR* phPeerDist,
    DWORD* pdwSupportedVersion   // optional
);

<DllImport("PeerDist.dll", ExactSpelling:=True)>
Public Shared Function PeerDistStartup(
    dwVersionRequested As UInteger,   ' DWORD
    <Out> ByRef phPeerDist As IntPtr,   ' INT_PTR* out
    pdwSupportedVersion As IntPtr   ' DWORD* optional, out
) As UInteger
End Function

' dwVersionRequested : DWORD
' phPeerDist : INT_PTR* out
' pdwSupportedVersion : DWORD* optional, out
Declare PtrSafe Function PeerDistStartup Lib "peerdist" ( _
    ByVal dwVersionRequested As Long, _
    ByRef phPeerDist As LongPtr, _
    ByVal pdwSupportedVersion 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

PeerDistStartup = ctypes.windll.peerdist.PeerDistStartup
PeerDistStartup.restype = wintypes.DWORD
PeerDistStartup.argtypes = [
    wintypes.DWORD,  # dwVersionRequested : DWORD
    ctypes.POINTER(ctypes.c_ssize_t),  # phPeerDist : INT_PTR* out
    ctypes.POINTER(wintypes.DWORD),  # pdwSupportedVersion : DWORD* optional, out
]

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('PeerDist.dll')
PeerDistStartup = Fiddle::Function.new(
  lib['PeerDistStartup'],
  [
    -Fiddle::TYPE_INT,  # dwVersionRequested : DWORD
    Fiddle::TYPE_VOIDP,  # phPeerDist : INT_PTR* out
    Fiddle::TYPE_VOIDP,  # pdwSupportedVersion : DWORD* optional, out
  ],
  -Fiddle::TYPE_INT)

#[link(name = "peerdist")]
extern "system" {
    fn PeerDistStartup(
        dwVersionRequested: u32,  // DWORD
        phPeerDist: *mut isize,  // INT_PTR* out
        pdwSupportedVersion: *mut u32  // DWORD* optional, out
    ) -> u32;
}
// crates: windows-sys provides ready-made bindings for this API.

$sig = @"
[DllImport("PeerDist.dll")]
public static extern uint PeerDistStartup(uint dwVersionRequested, out IntPtr phPeerDist, IntPtr pdwSupportedVersion);
"@
$api = Add-Type -MemberDefinition $sig -Name 'PeerDist_PeerDistStartup' -Namespace Win32 -PassThru
# $api::PeerDistStartup(dwVersionRequested, phPeerDist, pdwSupportedVersion)

#uselib "PeerDist.dll"
#func global PeerDistStartup "PeerDistStartup" sptr, sptr, sptr
; PeerDistStartup dwVersionRequested, varptr(phPeerDist), varptr(pdwSupportedVersion)   ; 戻り値は stat
; dwVersionRequested : DWORD -> "sptr"
; phPeerDist : INT_PTR* out -> "sptr"
; pdwSupportedVersion : DWORD* optional, 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 "PeerDist.dll"
#cfunc global PeerDistStartup "PeerDistStartup" int, var, var
; res = PeerDistStartup(dwVersionRequested, phPeerDist, pdwSupportedVersion)
; dwVersionRequested : DWORD -> "int"
; phPeerDist : INT_PTR* out -> "var"
; pdwSupportedVersion : DWORD* optional, 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。

; DWORD PeerDistStartup(DWORD dwVersionRequested, INT_PTR* phPeerDist, DWORD* pdwSupportedVersion)
#uselib "PeerDist.dll"
#cfunc global PeerDistStartup "PeerDistStartup" int, var, var
; res = PeerDistStartup(dwVersionRequested, phPeerDist, pdwSupportedVersion)
; dwVersionRequested : DWORD -> "int"
; phPeerDist : INT_PTR* out -> "var"
; pdwSupportedVersion : DWORD* optional, 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 (
	peerdist = windows.NewLazySystemDLL("PeerDist.dll")
	procPeerDistStartup = peerdist.NewProc("PeerDistStartup")
)

// dwVersionRequested (DWORD), phPeerDist (INT_PTR* out), pdwSupportedVersion (DWORD* optional, out)
r1, _, err := procPeerDistStartup.Call(
	uintptr(dwVersionRequested),
	uintptr(phPeerDist),
	uintptr(pdwSupportedVersion),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // DWORD

function PeerDistStartup(
  dwVersionRequested: DWORD;   // DWORD
  phPeerDist: Pointer;   // INT_PTR* out
  pdwSupportedVersion: Pointer   // DWORD* optional, out
): DWORD; stdcall;
  external 'PeerDist.dll' name 'PeerDistStartup';

result := DllCall("PeerDist\PeerDistStartup"
    , "UInt", dwVersionRequested   ; DWORD
    , "Ptr", phPeerDist   ; INT_PTR* out
    , "Ptr", pdwSupportedVersion   ; DWORD* optional, out
    , "UInt")   ; return: DWORD

●PeerDistStartup(dwVersionRequested, phPeerDist, pdwSupportedVersion) = DLL("PeerDist.dll", "dword PeerDistStartup(dword, void*, void*)")
# 呼び出し: PeerDistStartup(dwVersionRequested, phPeerDist, pdwSupportedVersion)
# dwVersionRequested : DWORD -> "dword"
# phPeerDist : INT_PTR* out -> "void*"
# pdwSupportedVersion : DWORD* optional, 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)。