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NPGetConnection

関数

ローカル名に対応するリモート名をプロバイダーから取得する。

DLLdavclnt.dll呼出規約winapi対応OSWindows XP 以降

シグネチャ

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

DWORD NPGetConnection(
    LPWSTR lpLocalName,
    LPWSTR lpRemoteName,   // optional
    DWORD* lpnBufferLen
);

パラメーター

名前	型	方向
lpLocalName	LPWSTR	in
lpRemoteName	LPWSTR	outoptional
lpnBufferLen	DWORD*	inout

戻り値の型: DWORD

各言語での呼び出し定義

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

DWORD NPGetConnection(
    LPWSTR lpLocalName,
    LPWSTR lpRemoteName,   // optional
    DWORD* lpnBufferLen
);

[DllImport("davclnt.dll", ExactSpelling = true)]
static extern uint NPGetConnection(
    [MarshalAs(UnmanagedType.LPWStr)] string lpLocalName,   // LPWSTR
    [MarshalAs(UnmanagedType.LPWStr)] System.Text.StringBuilder lpRemoteName,   // LPWSTR optional, out
    ref uint lpnBufferLen   // DWORD* in/out
);

<DllImport("davclnt.dll", ExactSpelling:=True)>
Public Shared Function NPGetConnection(
    <MarshalAs(UnmanagedType.LPWStr)> lpLocalName As String,   ' LPWSTR
    <MarshalAs(UnmanagedType.LPWStr)> lpRemoteName As System.Text.StringBuilder,   ' LPWSTR optional, out
    ByRef lpnBufferLen As UInteger   ' DWORD* in/out
) As UInteger
End Function

' lpLocalName : LPWSTR
' lpRemoteName : LPWSTR optional, out
' lpnBufferLen : DWORD* in/out
Declare PtrSafe Function NPGetConnection Lib "davclnt" ( _
    ByVal lpLocalName As LongPtr, _
    ByVal lpRemoteName As LongPtr, _
    ByRef lpnBufferLen 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

NPGetConnection = ctypes.windll.davclnt.NPGetConnection
NPGetConnection.restype = wintypes.DWORD
NPGetConnection.argtypes = [
    wintypes.LPCWSTR,  # lpLocalName : LPWSTR
    wintypes.LPWSTR,  # lpRemoteName : LPWSTR optional, out
    ctypes.POINTER(wintypes.DWORD),  # lpnBufferLen : DWORD* in/out
]

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('davclnt.dll')
NPGetConnection = Fiddle::Function.new(
  lib['NPGetConnection'],
  [
    Fiddle::TYPE_VOIDP,  # lpLocalName : LPWSTR
    Fiddle::TYPE_VOIDP,  # lpRemoteName : LPWSTR optional, out
    Fiddle::TYPE_VOIDP,  # lpnBufferLen : DWORD* in/out
  ],
  -Fiddle::TYPE_INT)

#[link(name = "davclnt")]
extern "system" {
    fn NPGetConnection(
        lpLocalName: *mut u16,  // LPWSTR
        lpRemoteName: *mut u16,  // LPWSTR optional, out
        lpnBufferLen: *mut u32  // DWORD* in/out
    ) -> u32;
}
// crates: windows-sys provides ready-made bindings for this API.

$sig = @"
[DllImport("davclnt.dll")]
public static extern uint NPGetConnection([MarshalAs(UnmanagedType.LPWStr)] string lpLocalName, [MarshalAs(UnmanagedType.LPWStr)] System.Text.StringBuilder lpRemoteName, ref uint lpnBufferLen);
"@
$api = Add-Type -MemberDefinition $sig -Name 'davclnt_NPGetConnection' -Namespace Win32 -PassThru
# $api::NPGetConnection(lpLocalName, lpRemoteName, lpnBufferLen)

#uselib "davclnt.dll"
#func global NPGetConnection "NPGetConnection" sptr, sptr, sptr
; NPGetConnection lpLocalName, varptr(lpRemoteName), varptr(lpnBufferLen)   ; 戻り値は stat
; lpLocalName : LPWSTR -> "sptr"
; lpRemoteName : LPWSTR optional, out -> "sptr"
; lpnBufferLen : 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。

出力引数:

#uselib "davclnt.dll"
#cfunc global NPGetConnection "NPGetConnection" wstr, var, var
; res = NPGetConnection(lpLocalName, lpRemoteName, lpnBufferLen)
; lpLocalName : LPWSTR -> "wstr"
; lpRemoteName : LPWSTR optional, out -> "var"
; lpnBufferLen : 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。#uselib "davclnt.dll"
#cfunc global NPGetConnection "NPGetConnection" wstr, sptr, sptr
; res = NPGetConnection(lpLocalName, varptr(lpRemoteName), varptr(lpnBufferLen))
; lpLocalName : LPWSTR -> "wstr"
; lpRemoteName : LPWSTR optional, out -> "sptr"
; lpnBufferLen : DWORD* in/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:

; DWORD NPGetConnection(LPWSTR lpLocalName, LPWSTR lpRemoteName, DWORD* lpnBufferLen)
#uselib "davclnt.dll"
#cfunc global NPGetConnection "NPGetConnection" wstr, var, var
; res = NPGetConnection(lpLocalName, lpRemoteName, lpnBufferLen)
; lpLocalName : LPWSTR -> "wstr"
; lpRemoteName : LPWSTR optional, out -> "var"
; lpnBufferLen : 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 NPGetConnection(LPWSTR lpLocalName, LPWSTR lpRemoteName, DWORD* lpnBufferLen)
#uselib "davclnt.dll"
#cfunc global NPGetConnection "NPGetConnection" wstr, intptr, intptr
; res = NPGetConnection(lpLocalName, varptr(lpRemoteName), varptr(lpnBufferLen))
; lpLocalName : LPWSTR -> "wstr"
; lpRemoteName : LPWSTR optional, out -> "intptr"
; lpnBufferLen : DWORD* in/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 (
	davclnt = windows.NewLazySystemDLL("davclnt.dll")
	procNPGetConnection = davclnt.NewProc("NPGetConnection")
)

// lpLocalName (LPWSTR), lpRemoteName (LPWSTR optional, out), lpnBufferLen (DWORD* in/out)
r1, _, err := procNPGetConnection.Call(
	uintptr(unsafe.Pointer(windows.StringToUTF16Ptr(lpLocalName))),
	uintptr(lpRemoteName),
	uintptr(lpnBufferLen),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // DWORD

function NPGetConnection(
  lpLocalName: PWideChar;   // LPWSTR
  lpRemoteName: PWideChar;   // LPWSTR optional, out
  lpnBufferLen: Pointer   // DWORD* in/out
): DWORD; stdcall;
  external 'davclnt.dll' name 'NPGetConnection';

result := DllCall("davclnt\NPGetConnection"
    , "WStr", lpLocalName   ; LPWSTR
    , "Ptr", lpRemoteName   ; LPWSTR optional, out
    , "Ptr", lpnBufferLen   ; DWORD* in/out
    , "UInt")   ; return: DWORD

●NPGetConnection(lpLocalName, lpRemoteName, lpnBufferLen) = DLL("davclnt.dll", "dword NPGetConnection(char*, char*, void*)")
# 呼び出し: NPGetConnection(lpLocalName, lpRemoteName, lpnBufferLen)
# lpLocalName : LPWSTR -> "char*"
# lpRemoteName : LPWSTR optional, out -> "char*"
# lpnBufferLen : 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)。