GetClusterNetworkId

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

DWORD GetClusterNetworkId(
    HNETWORK hNetwork,
    LPWSTR lpszNetworkId,
    DWORD* lpcchName
);

<DllImport("CLUSAPI.dll", ExactSpelling:=True)>
Public Shared Function GetClusterNetworkId(
    hNetwork As IntPtr,   ' HNETWORK
    <MarshalAs(UnmanagedType.LPWStr)> lpszNetworkId As System.Text.StringBuilder,   ' LPWSTR out
    ByRef lpcchName As UInteger   ' DWORD* in/out
) As UInteger
End Function

' hNetwork : HNETWORK
' lpszNetworkId : LPWSTR out
' lpcchName : DWORD* in/out
Declare PtrSafe Function GetClusterNetworkId Lib "clusapi" ( _
    ByVal hNetwork As LongPtr, _
    ByVal lpszNetworkId As LongPtr, _
    ByRef lpcchName As Long) As Long
' VBA7前提(PtrSafe)。32bit Office では LongPtr→Long。Integer=16bit / Long=32bit / LongLong=64bit。

import ctypes
from ctypes import wintypes

GetClusterNetworkId = ctypes.windll.clusapi.GetClusterNetworkId
GetClusterNetworkId.restype = wintypes.DWORD
GetClusterNetworkId.argtypes = [
    ctypes.c_ssize_t,  # hNetwork : HNETWORK
    wintypes.LPWSTR,  # lpszNetworkId : LPWSTR out
    ctypes.POINTER(wintypes.DWORD),  # lpcchName : DWORD* in/out
]

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('CLUSAPI.dll')
GetClusterNetworkId = Fiddle::Function.new(
  lib['GetClusterNetworkId'],
  [
    Fiddle::TYPE_INTPTR_T,  # hNetwork : HNETWORK
    Fiddle::TYPE_VOIDP,  # lpszNetworkId : LPWSTR out
    Fiddle::TYPE_VOIDP,  # lpcchName : DWORD* in/out
  ],
  -Fiddle::TYPE_INT)

#[link(name = "clusapi")]
extern "system" {
    fn GetClusterNetworkId(
        hNetwork: isize,  // HNETWORK
        lpszNetworkId: *mut u16,  // LPWSTR out
        lpcchName: *mut u32  // DWORD* in/out
    ) -> u32;
}
// crates: windows-sys provides ready-made bindings for this API.

$sig = @"
[DllImport("CLUSAPI.dll")]
public static extern uint GetClusterNetworkId(IntPtr hNetwork, [MarshalAs(UnmanagedType.LPWStr)] System.Text.StringBuilder lpszNetworkId, ref uint lpcchName);
"@
$api = Add-Type -MemberDefinition $sig -Name 'CLUSAPI_GetClusterNetworkId' -Namespace Win32 -PassThru
# $api::GetClusterNetworkId(hNetwork, lpszNetworkId, lpcchName)

#uselib "CLUSAPI.dll"
#func global GetClusterNetworkId "GetClusterNetworkId" sptr, sptr, sptr
; GetClusterNetworkId hNetwork, varptr(lpszNetworkId), varptr(lpcchName)   ; 戻り値は stat
; hNetwork : HNETWORK -> "sptr"
; lpszNetworkId : LPWSTR out -> "sptr"
; lpcchName : DWORD* in/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 "CLUSAPI.dll"
#cfunc global GetClusterNetworkId "GetClusterNetworkId" sptr, var, var
; res = GetClusterNetworkId(hNetwork, lpszNetworkId, lpcchName)
; hNetwork : HNETWORK -> "sptr"
; lpszNetworkId : LPWSTR out -> "var"
; lpcchName : DWORD* in/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 GetClusterNetworkId(HNETWORK hNetwork, LPWSTR lpszNetworkId, DWORD* lpcchName)
#uselib "CLUSAPI.dll"
#cfunc global GetClusterNetworkId "GetClusterNetworkId" intptr, var, var
; res = GetClusterNetworkId(hNetwork, lpszNetworkId, lpcchName)
; hNetwork : HNETWORK -> "intptr"
; lpszNetworkId : LPWSTR out -> "var"
; lpcchName : DWORD* in/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 (
	clusapi = windows.NewLazySystemDLL("CLUSAPI.dll")
	procGetClusterNetworkId = clusapi.NewProc("GetClusterNetworkId")
)

// hNetwork (HNETWORK), lpszNetworkId (LPWSTR out), lpcchName (DWORD* in/out)
r1, _, err := procGetClusterNetworkId.Call(
	uintptr(hNetwork),
	uintptr(lpszNetworkId),
	uintptr(lpcchName),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // DWORD

function GetClusterNetworkId(
  hNetwork: NativeInt;   // HNETWORK
  lpszNetworkId: PWideChar;   // LPWSTR out
  lpcchName: Pointer   // DWORD* in/out
): DWORD; stdcall;
  external 'CLUSAPI.dll' name 'GetClusterNetworkId';

result := DllCall("CLUSAPI\GetClusterNetworkId"
    , "Ptr", hNetwork   ; HNETWORK
    , "Ptr", lpszNetworkId   ; LPWSTR out
    , "Ptr", lpcchName   ; DWORD* in/out
    , "UInt")   ; return: DWORD

●GetClusterNetworkId(hNetwork, lpszNetworkId, lpcchName) = DLL("CLUSAPI.dll", "dword GetClusterNetworkId(int, char*, void*)")
# 呼び出し: GetClusterNetworkId(hNetwork, lpszNetworkId, lpcchName)
# hNetwork : HNETWORK -> "int"
# lpszNetworkId : LPWSTR out -> "char*"
# lpcchName : DWORD* in/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)。