HcnOpenNamespace

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

HRESULT HcnOpenNamespace(
    const GUID* Id,
    void** Namespace,
    LPWSTR* ErrorRecord   // optional
);

<DllImport("computenetwork.dll", ExactSpelling:=True)>
Public Shared Function HcnOpenNamespace(
    ByRef Id As Guid,   ' GUID*
    [Namespace] As IntPtr,   ' void** out
    ErrorRecord As IntPtr   ' LPWSTR* optional, out
) As Integer
End Function

' Id : GUID*
' Namespace : void** out
' ErrorRecord : LPWSTR* optional, out
Declare PtrSafe Function HcnOpenNamespace Lib "computenetwork" ( _
    ByVal Id As LongPtr, _
    ByVal Namespace As LongPtr, _
    ByVal ErrorRecord 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

HcnOpenNamespace = ctypes.windll.computenetwork.HcnOpenNamespace
HcnOpenNamespace.restype = ctypes.c_int
HcnOpenNamespace.argtypes = [
    ctypes.c_void_p,  # Id : GUID*
    ctypes.c_void_p,  # Namespace : void** out
    ctypes.c_void_p,  # ErrorRecord : LPWSTR* optional, out
]

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('computenetwork.dll')
HcnOpenNamespace = Fiddle::Function.new(
  lib['HcnOpenNamespace'],
  [
    Fiddle::TYPE_VOIDP,  # Id : GUID*
    Fiddle::TYPE_VOIDP,  # Namespace : void** out
    Fiddle::TYPE_VOIDP,  # ErrorRecord : LPWSTR* optional, out
  ],
  Fiddle::TYPE_INT)

#[link(name = "computenetwork")]
extern "system" {
    fn HcnOpenNamespace(
        Id: *const GUID,  // GUID*
        Namespace: *mut *mut (),  // void** out
        ErrorRecord: *mut *mut u16  // LPWSTR* optional, out
    ) -> i32;
}
// crates: windows-sys provides ready-made bindings for this API.

$sig = @"
[DllImport("computenetwork.dll")]
public static extern int HcnOpenNamespace(ref Guid Id, IntPtr Namespace, IntPtr ErrorRecord);
"@
$api = Add-Type -MemberDefinition $sig -Name 'computenetwork_HcnOpenNamespace' -Namespace Win32 -PassThru
# $api::HcnOpenNamespace(Id, Namespace, ErrorRecord)

#uselib "computenetwork.dll"
#func global HcnOpenNamespace "HcnOpenNamespace" sptr, sptr, sptr
; HcnOpenNamespace varptr(Id), Namespace, varptr(ErrorRecord)   ; 戻り値は stat
; Id : GUID* -> "sptr"
; Namespace : void** out -> "sptr"
; ErrorRecord : LPWSTR* 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 "computenetwork.dll"
#cfunc global HcnOpenNamespace "HcnOpenNamespace" var, sptr, var
; res = HcnOpenNamespace(Id, Namespace, ErrorRecord)
; Id : GUID* -> "var"
; Namespace : void** out -> "sptr"
; ErrorRecord : LPWSTR* 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。

; HRESULT HcnOpenNamespace(GUID* Id, void** Namespace, LPWSTR* ErrorRecord)
#uselib "computenetwork.dll"
#cfunc global HcnOpenNamespace "HcnOpenNamespace" var, intptr, var
; res = HcnOpenNamespace(Id, Namespace, ErrorRecord)
; Id : GUID* -> "var"
; Namespace : void** out -> "intptr"
; ErrorRecord : LPWSTR* 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 (
	computenetwork = windows.NewLazySystemDLL("computenetwork.dll")
	procHcnOpenNamespace = computenetwork.NewProc("HcnOpenNamespace")
)

// Id (GUID*), Namespace (void** out), ErrorRecord (LPWSTR* optional, out)
r1, _, err := procHcnOpenNamespace.Call(
	uintptr(Id),
	uintptr(Namespace),
	uintptr(ErrorRecord),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // HRESULT

function HcnOpenNamespace(
  Id: PGUID;   // GUID*
  Namespace: Pointer;   // void** out
  ErrorRecord: PPWideChar   // LPWSTR* optional, out
): Integer; stdcall;
  external 'computenetwork.dll' name 'HcnOpenNamespace';

result := DllCall("computenetwork\HcnOpenNamespace"
    , "Ptr", Id   ; GUID*
    , "Ptr", Namespace   ; void** out
    , "Ptr", ErrorRecord   ; LPWSTR* optional, out
    , "Int")   ; return: HRESULT

●HcnOpenNamespace(Id, Namespace, ErrorRecord) = DLL("computenetwork.dll", "int HcnOpenNamespace(void*, void*, void*)")
# 呼び出し: HcnOpenNamespace(Id, Namespace, ErrorRecord)
# Id : GUID* -> "void*"
# Namespace : void** out -> "void*"
# ErrorRecord : LPWSTR* 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)。