NetDfsEnum

// NETAPI32.dll
#include <windows.h>

DWORD NetDfsEnum(
    LPWSTR DfsName,
    DWORD Level,
    DWORD PrefMaxLen,
    BYTE** Buffer,
    DWORD* EntriesRead,
    DWORD* ResumeHandle
);

<DllImport("NETAPI32.dll", ExactSpelling:=True)>
Public Shared Function NetDfsEnum(
    <MarshalAs(UnmanagedType.LPWStr)> DfsName As String,   ' LPWSTR
    Level As UInteger,   ' DWORD
    PrefMaxLen As UInteger,   ' DWORD
    Buffer As IntPtr,   ' BYTE** out
    <Out> ByRef EntriesRead As UInteger,   ' DWORD* out
    ByRef ResumeHandle As UInteger   ' DWORD* in/out
) As UInteger
End Function

' DfsName : LPWSTR
' Level : DWORD
' PrefMaxLen : DWORD
' Buffer : BYTE** out
' EntriesRead : DWORD* out
' ResumeHandle : DWORD* in/out
Declare PtrSafe Function NetDfsEnum Lib "netapi32" ( _
    ByVal DfsName As LongPtr, _
    ByVal Level As Long, _
    ByVal PrefMaxLen As Long, _
    ByVal Buffer As LongPtr, _
    ByRef EntriesRead As Long, _
    ByRef ResumeHandle 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

NetDfsEnum = ctypes.windll.netapi32.NetDfsEnum
NetDfsEnum.restype = wintypes.DWORD
NetDfsEnum.argtypes = [
    wintypes.LPCWSTR,  # DfsName : LPWSTR
    wintypes.DWORD,  # Level : DWORD
    wintypes.DWORD,  # PrefMaxLen : DWORD
    ctypes.c_void_p,  # Buffer : BYTE** out
    ctypes.POINTER(wintypes.DWORD),  # EntriesRead : DWORD* out
    ctypes.POINTER(wintypes.DWORD),  # ResumeHandle : DWORD* in/out
]

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('NETAPI32.dll')
NetDfsEnum = Fiddle::Function.new(
  lib['NetDfsEnum'],
  [
    Fiddle::TYPE_VOIDP,  # DfsName : LPWSTR
    -Fiddle::TYPE_INT,  # Level : DWORD
    -Fiddle::TYPE_INT,  # PrefMaxLen : DWORD
    Fiddle::TYPE_VOIDP,  # Buffer : BYTE** out
    Fiddle::TYPE_VOIDP,  # EntriesRead : DWORD* out
    Fiddle::TYPE_VOIDP,  # ResumeHandle : DWORD* in/out
  ],
  -Fiddle::TYPE_INT)

#[link(name = "netapi32")]
extern "system" {
    fn NetDfsEnum(
        DfsName: *mut u16,  // LPWSTR
        Level: u32,  // DWORD
        PrefMaxLen: u32,  // DWORD
        Buffer: *mut *mut u8,  // BYTE** out
        EntriesRead: *mut u32,  // DWORD* out
        ResumeHandle: *mut u32  // DWORD* in/out
    ) -> u32;
}
// crates: windows-sys provides ready-made bindings for this API.

$sig = @"
[DllImport("NETAPI32.dll")]
public static extern uint NetDfsEnum([MarshalAs(UnmanagedType.LPWStr)] string DfsName, uint Level, uint PrefMaxLen, IntPtr Buffer, out uint EntriesRead, ref uint ResumeHandle);
"@
$api = Add-Type -MemberDefinition $sig -Name 'NETAPI32_NetDfsEnum' -Namespace Win32 -PassThru
# $api::NetDfsEnum(DfsName, Level, PrefMaxLen, Buffer, EntriesRead, ResumeHandle)

#uselib "NETAPI32.dll"
#func global NetDfsEnum "NetDfsEnum" sptr, sptr, sptr, sptr, sptr, sptr
; NetDfsEnum DfsName, Level, PrefMaxLen, varptr(Buffer), varptr(EntriesRead), varptr(ResumeHandle)   ; 戻り値は stat
; DfsName : LPWSTR -> "sptr"
; Level : DWORD -> "sptr"
; PrefMaxLen : DWORD -> "sptr"
; Buffer : BYTE** out -> "sptr"
; EntriesRead : DWORD* out -> "sptr"
; ResumeHandle : 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 "NETAPI32.dll"
#cfunc global NetDfsEnum "NetDfsEnum" wstr, int, int, var, var, var
; res = NetDfsEnum(DfsName, Level, PrefMaxLen, Buffer, EntriesRead, ResumeHandle)
; DfsName : LPWSTR -> "wstr"
; Level : DWORD -> "int"
; PrefMaxLen : DWORD -> "int"
; Buffer : BYTE** out -> "var"
; EntriesRead : DWORD* out -> "var"
; ResumeHandle : 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 NetDfsEnum(LPWSTR DfsName, DWORD Level, DWORD PrefMaxLen, BYTE** Buffer, DWORD* EntriesRead, DWORD* ResumeHandle)
#uselib "NETAPI32.dll"
#cfunc global NetDfsEnum "NetDfsEnum" wstr, int, int, var, var, var
; res = NetDfsEnum(DfsName, Level, PrefMaxLen, Buffer, EntriesRead, ResumeHandle)
; DfsName : LPWSTR -> "wstr"
; Level : DWORD -> "int"
; PrefMaxLen : DWORD -> "int"
; Buffer : BYTE** out -> "var"
; EntriesRead : DWORD* out -> "var"
; ResumeHandle : 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 (
	netapi32 = windows.NewLazySystemDLL("NETAPI32.dll")
	procNetDfsEnum = netapi32.NewProc("NetDfsEnum")
)

// DfsName (LPWSTR), Level (DWORD), PrefMaxLen (DWORD), Buffer (BYTE** out), EntriesRead (DWORD* out), ResumeHandle (DWORD* in/out)
r1, _, err := procNetDfsEnum.Call(
	uintptr(unsafe.Pointer(windows.StringToUTF16Ptr(DfsName))),
	uintptr(Level),
	uintptr(PrefMaxLen),
	uintptr(Buffer),
	uintptr(EntriesRead),
	uintptr(ResumeHandle),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // DWORD

function NetDfsEnum(
  DfsName: PWideChar;   // LPWSTR
  Level: DWORD;   // DWORD
  PrefMaxLen: DWORD;   // DWORD
  Buffer: Pointer;   // BYTE** out
  EntriesRead: Pointer;   // DWORD* out
  ResumeHandle: Pointer   // DWORD* in/out
): DWORD; stdcall;
  external 'NETAPI32.dll' name 'NetDfsEnum';

result := DllCall("NETAPI32\NetDfsEnum"
    , "WStr", DfsName   ; LPWSTR
    , "UInt", Level   ; DWORD
    , "UInt", PrefMaxLen   ; DWORD
    , "Ptr", Buffer   ; BYTE** out
    , "Ptr", EntriesRead   ; DWORD* out
    , "Ptr", ResumeHandle   ; DWORD* in/out
    , "UInt")   ; return: DWORD

●NetDfsEnum(DfsName, Level, PrefMaxLen, Buffer, EntriesRead, ResumeHandle) = DLL("NETAPI32.dll", "dword NetDfsEnum(char*, dword, dword, void*, void*, void*)")
# 呼び出し: NetDfsEnum(DfsName, Level, PrefMaxLen, Buffer, EntriesRead, ResumeHandle)
# DfsName : LPWSTR -> "char*"
# Level : DWORD -> "dword"
# PrefMaxLen : DWORD -> "dword"
# Buffer : BYTE** out -> "void*"
# EntriesRead : DWORD* out -> "void*"
# ResumeHandle : 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)。