ClusterGroupOpenEnumEx

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

HGROUPENUMEX ClusterGroupOpenEnumEx(
    HCLUSTER hCluster,
    LPCWSTR lpszProperties,   // optional
    DWORD cbProperties,
    LPCWSTR lpszRoProperties,   // optional
    DWORD cbRoProperties,
    DWORD dwFlags
);

<DllImport("CLUSAPI.dll", ExactSpelling:=True)>
Public Shared Function ClusterGroupOpenEnumEx(
    hCluster As IntPtr,   ' HCLUSTER
    <MarshalAs(UnmanagedType.LPWStr)> lpszProperties As String,   ' LPCWSTR optional
    cbProperties As UInteger,   ' DWORD
    <MarshalAs(UnmanagedType.LPWStr)> lpszRoProperties As String,   ' LPCWSTR optional
    cbRoProperties As UInteger,   ' DWORD
    dwFlags As UInteger   ' DWORD
) As IntPtr
End Function

' hCluster : HCLUSTER
' lpszProperties : LPCWSTR optional
' cbProperties : DWORD
' lpszRoProperties : LPCWSTR optional
' cbRoProperties : DWORD
' dwFlags : DWORD
Declare PtrSafe Function ClusterGroupOpenEnumEx Lib "clusapi" ( _
    ByVal hCluster As LongPtr, _
    ByVal lpszProperties As LongPtr, _
    ByVal cbProperties As Long, _
    ByVal lpszRoProperties As LongPtr, _
    ByVal cbRoProperties As Long, _
    ByVal dwFlags As Long) As LongPtr
' VBA7前提(PtrSafe)。32bit Office では LongPtr→Long。Integer=16bit / Long=32bit / LongLong=64bit。

import ctypes
from ctypes import wintypes

ClusterGroupOpenEnumEx = ctypes.windll.clusapi.ClusterGroupOpenEnumEx
ClusterGroupOpenEnumEx.restype = ctypes.c_ssize_t
ClusterGroupOpenEnumEx.argtypes = [
    ctypes.c_ssize_t,  # hCluster : HCLUSTER
    wintypes.LPCWSTR,  # lpszProperties : LPCWSTR optional
    wintypes.DWORD,  # cbProperties : DWORD
    wintypes.LPCWSTR,  # lpszRoProperties : LPCWSTR optional
    wintypes.DWORD,  # cbRoProperties : DWORD
    wintypes.DWORD,  # dwFlags : DWORD
]

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('CLUSAPI.dll')
ClusterGroupOpenEnumEx = Fiddle::Function.new(
  lib['ClusterGroupOpenEnumEx'],
  [
    Fiddle::TYPE_INTPTR_T,  # hCluster : HCLUSTER
    Fiddle::TYPE_VOIDP,  # lpszProperties : LPCWSTR optional
    -Fiddle::TYPE_INT,  # cbProperties : DWORD
    Fiddle::TYPE_VOIDP,  # lpszRoProperties : LPCWSTR optional
    -Fiddle::TYPE_INT,  # cbRoProperties : DWORD
    -Fiddle::TYPE_INT,  # dwFlags : DWORD
  ],
  Fiddle::TYPE_INTPTR_T)

#[link(name = "clusapi")]
extern "system" {
    fn ClusterGroupOpenEnumEx(
        hCluster: isize,  // HCLUSTER
        lpszProperties: *const u16,  // LPCWSTR optional
        cbProperties: u32,  // DWORD
        lpszRoProperties: *const u16,  // LPCWSTR optional
        cbRoProperties: u32,  // DWORD
        dwFlags: u32  // DWORD
    ) -> isize;
}
// crates: windows-sys provides ready-made bindings for this API.

$sig = @"
[DllImport("CLUSAPI.dll")]
public static extern IntPtr ClusterGroupOpenEnumEx(IntPtr hCluster, [MarshalAs(UnmanagedType.LPWStr)] string lpszProperties, uint cbProperties, [MarshalAs(UnmanagedType.LPWStr)] string lpszRoProperties, uint cbRoProperties, uint dwFlags);
"@
$api = Add-Type -MemberDefinition $sig -Name 'CLUSAPI_ClusterGroupOpenEnumEx' -Namespace Win32 -PassThru
# $api::ClusterGroupOpenEnumEx(hCluster, lpszProperties, cbProperties, lpszRoProperties, cbRoProperties, dwFlags)

#uselib "CLUSAPI.dll"
#func global ClusterGroupOpenEnumEx "ClusterGroupOpenEnumEx" sptr, sptr, sptr, sptr, sptr, sptr
; ClusterGroupOpenEnumEx hCluster, lpszProperties, cbProperties, lpszRoProperties, cbRoProperties, dwFlags   ; 戻り値は stat
; hCluster : HCLUSTER -> "sptr"
; lpszProperties : LPCWSTR optional -> "sptr"
; cbProperties : DWORD -> "sptr"
; lpszRoProperties : LPCWSTR optional -> "sptr"
; cbRoProperties : DWORD -> "sptr"
; dwFlags : DWORD -> "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 ClusterGroupOpenEnumEx "ClusterGroupOpenEnumEx" sptr, wstr, int, wstr, int, int
; res = ClusterGroupOpenEnumEx(hCluster, lpszProperties, cbProperties, lpszRoProperties, cbRoProperties, dwFlags)
; hCluster : HCLUSTER -> "sptr"
; lpszProperties : LPCWSTR optional -> "wstr"
; cbProperties : DWORD -> "int"
; lpszRoProperties : LPCWSTR optional -> "wstr"
; cbRoProperties : DWORD -> "int"
; dwFlags : DWORD -> "int"

; HGROUPENUMEX ClusterGroupOpenEnumEx(HCLUSTER hCluster, LPCWSTR lpszProperties, DWORD cbProperties, LPCWSTR lpszRoProperties, DWORD cbRoProperties, DWORD dwFlags)
#uselib "CLUSAPI.dll"
#cfunc global ClusterGroupOpenEnumEx "ClusterGroupOpenEnumEx" intptr, wstr, int, wstr, int, int
; res = ClusterGroupOpenEnumEx(hCluster, lpszProperties, cbProperties, lpszRoProperties, cbRoProperties, dwFlags)
; hCluster : HCLUSTER -> "intptr"
; lpszProperties : LPCWSTR optional -> "wstr"
; cbProperties : DWORD -> "int"
; lpszRoProperties : LPCWSTR optional -> "wstr"
; cbRoProperties : DWORD -> "int"
; dwFlags : DWORD -> "int"

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

var (
	clusapi = windows.NewLazySystemDLL("CLUSAPI.dll")
	procClusterGroupOpenEnumEx = clusapi.NewProc("ClusterGroupOpenEnumEx")
)

// hCluster (HCLUSTER), lpszProperties (LPCWSTR optional), cbProperties (DWORD), lpszRoProperties (LPCWSTR optional), cbRoProperties (DWORD), dwFlags (DWORD)
r1, _, err := procClusterGroupOpenEnumEx.Call(
	uintptr(hCluster),
	uintptr(unsafe.Pointer(windows.StringToUTF16Ptr(lpszProperties))),
	uintptr(cbProperties),
	uintptr(unsafe.Pointer(windows.StringToUTF16Ptr(lpszRoProperties))),
	uintptr(cbRoProperties),
	uintptr(dwFlags),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // HGROUPENUMEX

function ClusterGroupOpenEnumEx(
  hCluster: NativeInt;   // HCLUSTER
  lpszProperties: PWideChar;   // LPCWSTR optional
  cbProperties: DWORD;   // DWORD
  lpszRoProperties: PWideChar;   // LPCWSTR optional
  cbRoProperties: DWORD;   // DWORD
  dwFlags: DWORD   // DWORD
): NativeInt; stdcall;
  external 'CLUSAPI.dll' name 'ClusterGroupOpenEnumEx';

result := DllCall("CLUSAPI\ClusterGroupOpenEnumEx"
    , "Ptr", hCluster   ; HCLUSTER
    , "WStr", lpszProperties   ; LPCWSTR optional
    , "UInt", cbProperties   ; DWORD
    , "WStr", lpszRoProperties   ; LPCWSTR optional
    , "UInt", cbRoProperties   ; DWORD
    , "UInt", dwFlags   ; DWORD
    , "Ptr")   ; return: HGROUPENUMEX

●ClusterGroupOpenEnumEx(hCluster, lpszProperties, cbProperties, lpszRoProperties, cbRoProperties, dwFlags) = DLL("CLUSAPI.dll", "int ClusterGroupOpenEnumEx(int, char*, dword, char*, dword, dword)")
# 呼び出し: ClusterGroupOpenEnumEx(hCluster, lpszProperties, cbProperties, lpszRoProperties, cbRoProperties, dwFlags)
# hCluster : HCLUSTER -> "int"
# lpszProperties : LPCWSTR optional -> "char*"
# cbProperties : DWORD -> "dword"
# lpszRoProperties : LPCWSTR optional -> "char*"
# cbRoProperties : DWORD -> "dword"
# dwFlags : DWORD -> "dword"
# 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)。