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HcnEnumerateNetworks

関数

クエリに一致するホストコンピュートネットワークを列挙する。

シグネチャ

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

HRESULT HcnEnumerateNetworks(
    LPCWSTR Query,
    LPWSTR* Networks,
    LPWSTR* ErrorRecord   // optional
);

パラメーター

名前	型	方向
Query	LPCWSTR	in
Networks	LPWSTR*	out
ErrorRecord	LPWSTR*	outoptional

戻り値の型: HRESULT

各言語での呼び出し定義

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

HRESULT HcnEnumerateNetworks(
    LPCWSTR Query,
    LPWSTR* Networks,
    LPWSTR* ErrorRecord   // optional
);

[DllImport("computenetwork.dll", ExactSpelling = true)]
static extern int HcnEnumerateNetworks(
    [MarshalAs(UnmanagedType.LPWStr)] string Query,   // LPCWSTR
    IntPtr Networks,   // LPWSTR* out
    IntPtr ErrorRecord   // LPWSTR* optional, out
);

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

' Query : LPCWSTR
' Networks : LPWSTR* out
' ErrorRecord : LPWSTR* optional, out
Declare PtrSafe Function HcnEnumerateNetworks Lib "computenetwork" ( _
    ByVal Query As LongPtr, _
    ByVal Networks 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

HcnEnumerateNetworks = ctypes.windll.computenetwork.HcnEnumerateNetworks
HcnEnumerateNetworks.restype = ctypes.c_int
HcnEnumerateNetworks.argtypes = [
    wintypes.LPCWSTR,  # Query : LPCWSTR
    ctypes.c_void_p,  # Networks : LPWSTR* out
    ctypes.c_void_p,  # ErrorRecord : LPWSTR* optional, out
]

require 'fiddle'
require 'fiddle/import'

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

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

#uselib "computenetwork.dll"
#func global HcnEnumerateNetworks "HcnEnumerateNetworks" sptr, sptr, sptr
; HcnEnumerateNetworks Query, varptr(Networks), varptr(ErrorRecord)   ; 戻り値は stat
; Query : LPCWSTR -> "sptr"
; Networks : 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。

出力引数:

#uselib "computenetwork.dll"
#cfunc global HcnEnumerateNetworks "HcnEnumerateNetworks" wstr, var, var
; res = HcnEnumerateNetworks(Query, Networks, ErrorRecord)
; Query : LPCWSTR -> "wstr"
; Networks : 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。#uselib "computenetwork.dll"
#cfunc global HcnEnumerateNetworks "HcnEnumerateNetworks" wstr, sptr, sptr
; res = HcnEnumerateNetworks(Query, varptr(Networks), varptr(ErrorRecord))
; Query : LPCWSTR -> "wstr"
; Networks : LPWSTR* out -> "sptr"
; ErrorRecord : LPWSTR* optional, out -> "sptr"
; ※出力/バッファ引数はポインタ方式(token=sptr / 呼び出しは varptr(変数))。

出力引数:

; HRESULT HcnEnumerateNetworks(LPCWSTR Query, LPWSTR* Networks, LPWSTR* ErrorRecord)
#uselib "computenetwork.dll"
#cfunc global HcnEnumerateNetworks "HcnEnumerateNetworks" wstr, var, var
; res = HcnEnumerateNetworks(Query, Networks, ErrorRecord)
; Query : LPCWSTR -> "wstr"
; Networks : 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 HcnEnumerateNetworks(LPCWSTR Query, LPWSTR* Networks, LPWSTR* ErrorRecord)
#uselib "computenetwork.dll"
#cfunc global HcnEnumerateNetworks "HcnEnumerateNetworks" wstr, intptr, intptr
; res = HcnEnumerateNetworks(Query, varptr(Networks), varptr(ErrorRecord))
; Query : LPCWSTR -> "wstr"
; Networks : LPWSTR* out -> "intptr"
; ErrorRecord : LPWSTR* optional, out -> "intptr"
; ※出力/バッファ引数はポインタ方式(token=intptr / 呼び出しは varptr(変数))。

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

var (
	computenetwork = windows.NewLazySystemDLL("computenetwork.dll")
	procHcnEnumerateNetworks = computenetwork.NewProc("HcnEnumerateNetworks")
)

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

function HcnEnumerateNetworks(
  Query: PWideChar;   // LPCWSTR
  Networks: PPWideChar;   // LPWSTR* out
  ErrorRecord: PPWideChar   // LPWSTR* optional, out
): Integer; stdcall;
  external 'computenetwork.dll' name 'HcnEnumerateNetworks';

result := DllCall("computenetwork\HcnEnumerateNetworks"
    , "WStr", Query   ; LPCWSTR
    , "Ptr", Networks   ; LPWSTR* out
    , "Ptr", ErrorRecord   ; LPWSTR* optional, out
    , "Int")   ; return: HRESULT

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