HcnQueryNamespaceProperties

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

HRESULT HcnQueryNamespaceProperties(
    void* Namespace,
    LPCWSTR Query,
    LPWSTR* Properties,
    LPWSTR* ErrorRecord   // optional
);

<DllImport("computenetwork.dll", ExactSpelling:=True)>
Public Shared Function HcnQueryNamespaceProperties(
    [Namespace] As IntPtr,   ' void*
    <MarshalAs(UnmanagedType.LPWStr)> Query As String,   ' LPCWSTR
    Properties As IntPtr,   ' LPWSTR* out
    ErrorRecord As IntPtr   ' LPWSTR* optional, out
) As Integer
End Function

' Namespace : void*
' Query : LPCWSTR
' Properties : LPWSTR* out
' ErrorRecord : LPWSTR* optional, out
Declare PtrSafe Function HcnQueryNamespaceProperties Lib "computenetwork" ( _
    ByVal Namespace As LongPtr, _
    ByVal Query As LongPtr, _
    ByVal Properties 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

HcnQueryNamespaceProperties = ctypes.windll.computenetwork.HcnQueryNamespaceProperties
HcnQueryNamespaceProperties.restype = ctypes.c_int
HcnQueryNamespaceProperties.argtypes = [
    ctypes.POINTER(None),  # Namespace : void*
    wintypes.LPCWSTR,  # Query : LPCWSTR
    ctypes.c_void_p,  # Properties : LPWSTR* out
    ctypes.c_void_p,  # ErrorRecord : LPWSTR* optional, out
]

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('computenetwork.dll')
HcnQueryNamespaceProperties = Fiddle::Function.new(
  lib['HcnQueryNamespaceProperties'],
  [
    Fiddle::TYPE_VOIDP,  # Namespace : void*
    Fiddle::TYPE_VOIDP,  # Query : LPCWSTR
    Fiddle::TYPE_VOIDP,  # Properties : LPWSTR* out
    Fiddle::TYPE_VOIDP,  # ErrorRecord : LPWSTR* optional, out
  ],
  Fiddle::TYPE_INT)

#[link(name = "computenetwork")]
extern "system" {
    fn HcnQueryNamespaceProperties(
        Namespace: *mut (),  // void*
        Query: *const u16,  // LPCWSTR
        Properties: *mut *mut u16,  // LPWSTR* 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 HcnQueryNamespaceProperties(IntPtr Namespace, [MarshalAs(UnmanagedType.LPWStr)] string Query, IntPtr Properties, IntPtr ErrorRecord);
"@
$api = Add-Type -MemberDefinition $sig -Name 'computenetwork_HcnQueryNamespaceProperties' -Namespace Win32 -PassThru
# $api::HcnQueryNamespaceProperties(Namespace, Query, Properties, ErrorRecord)

#uselib "computenetwork.dll"
#func global HcnQueryNamespaceProperties "HcnQueryNamespaceProperties" sptr, sptr, sptr, sptr
; HcnQueryNamespaceProperties Namespace, Query, varptr(Properties), varptr(ErrorRecord)   ; 戻り値は stat
; Namespace : void* -> "sptr"
; Query : LPCWSTR -> "sptr"
; Properties : LPWSTR* 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 HcnQueryNamespaceProperties "HcnQueryNamespaceProperties" sptr, wstr, var, var
; res = HcnQueryNamespaceProperties(Namespace, Query, Properties, ErrorRecord)
; Namespace : void* -> "sptr"
; Query : LPCWSTR -> "wstr"
; Properties : LPWSTR* out -> "var"
; 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 HcnQueryNamespaceProperties(void* Namespace, LPCWSTR Query, LPWSTR* Properties, LPWSTR* ErrorRecord)
#uselib "computenetwork.dll"
#cfunc global HcnQueryNamespaceProperties "HcnQueryNamespaceProperties" intptr, wstr, var, var
; res = HcnQueryNamespaceProperties(Namespace, Query, Properties, ErrorRecord)
; Namespace : void* -> "intptr"
; Query : LPCWSTR -> "wstr"
; Properties : LPWSTR* out -> "var"
; 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")
	procHcnQueryNamespaceProperties = computenetwork.NewProc("HcnQueryNamespaceProperties")
)

// Namespace (void*), Query (LPCWSTR), Properties (LPWSTR* out), ErrorRecord (LPWSTR* optional, out)
r1, _, err := procHcnQueryNamespaceProperties.Call(
	uintptr(Namespace),
	uintptr(unsafe.Pointer(windows.StringToUTF16Ptr(Query))),
	uintptr(Properties),
	uintptr(ErrorRecord),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // HRESULT

function HcnQueryNamespaceProperties(
  Namespace: Pointer;   // void*
  Query: PWideChar;   // LPCWSTR
  Properties: PPWideChar;   // LPWSTR* out
  ErrorRecord: PPWideChar   // LPWSTR* optional, out
): Integer; stdcall;
  external 'computenetwork.dll' name 'HcnQueryNamespaceProperties';

result := DllCall("computenetwork\HcnQueryNamespaceProperties"
    , "Ptr", Namespace   ; void*
    , "WStr", Query   ; LPCWSTR
    , "Ptr", Properties   ; LPWSTR* out
    , "Ptr", ErrorRecord   ; LPWSTR* optional, out
    , "Int")   ; return: HRESULT

●HcnQueryNamespaceProperties(Namespace, Query, Properties, ErrorRecord) = DLL("computenetwork.dll", "int HcnQueryNamespaceProperties(void*, char*, void*, void*)")
# 呼び出し: HcnQueryNamespaceProperties(Namespace, Query, Properties, ErrorRecord)
# Namespace : void* -> "void*"
# Query : LPCWSTR -> "char*"
# Properties : LPWSTR* 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)。