DavAddConnection

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

DWORD DavAddConnection(
    HANDLE* ConnectionHandle,
    LPCWSTR RemoteName,
    LPCWSTR UserName,   // optional
    LPCWSTR Password,   // optional
    BYTE* ClientCert,
    DWORD CertSize
);

<DllImport("NETAPI32.dll", ExactSpelling:=True)>
Public Shared Function DavAddConnection(
    ConnectionHandle As IntPtr,   ' HANDLE* in/out
    <MarshalAs(UnmanagedType.LPWStr)> RemoteName As String,   ' LPCWSTR
    <MarshalAs(UnmanagedType.LPWStr)> UserName As String,   ' LPCWSTR optional
    <MarshalAs(UnmanagedType.LPWStr)> Password As String,   ' LPCWSTR optional
    ClientCert As IntPtr,   ' BYTE*
    CertSize As UInteger   ' DWORD
) As UInteger
End Function

' ConnectionHandle : HANDLE* in/out
' RemoteName : LPCWSTR
' UserName : LPCWSTR optional
' Password : LPCWSTR optional
' ClientCert : BYTE*
' CertSize : DWORD
Declare PtrSafe Function DavAddConnection Lib "netapi32" ( _
    ByVal ConnectionHandle As LongPtr, _
    ByVal RemoteName As LongPtr, _
    ByVal UserName As LongPtr, _
    ByVal Password As LongPtr, _
    ByVal ClientCert As LongPtr, _
    ByVal CertSize 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

DavAddConnection = ctypes.windll.netapi32.DavAddConnection
DavAddConnection.restype = wintypes.DWORD
DavAddConnection.argtypes = [
    ctypes.c_void_p,  # ConnectionHandle : HANDLE* in/out
    wintypes.LPCWSTR,  # RemoteName : LPCWSTR
    wintypes.LPCWSTR,  # UserName : LPCWSTR optional
    wintypes.LPCWSTR,  # Password : LPCWSTR optional
    ctypes.POINTER(ctypes.c_ubyte),  # ClientCert : BYTE*
    wintypes.DWORD,  # CertSize : DWORD
]

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('NETAPI32.dll')
DavAddConnection = Fiddle::Function.new(
  lib['DavAddConnection'],
  [
    Fiddle::TYPE_VOIDP,  # ConnectionHandle : HANDLE* in/out
    Fiddle::TYPE_VOIDP,  # RemoteName : LPCWSTR
    Fiddle::TYPE_VOIDP,  # UserName : LPCWSTR optional
    Fiddle::TYPE_VOIDP,  # Password : LPCWSTR optional
    Fiddle::TYPE_VOIDP,  # ClientCert : BYTE*
    -Fiddle::TYPE_INT,  # CertSize : DWORD
  ],
  -Fiddle::TYPE_INT)

#[link(name = "netapi32")]
extern "system" {
    fn DavAddConnection(
        ConnectionHandle: *mut *mut core::ffi::c_void,  // HANDLE* in/out
        RemoteName: *const u16,  // LPCWSTR
        UserName: *const u16,  // LPCWSTR optional
        Password: *const u16,  // LPCWSTR optional
        ClientCert: *mut u8,  // BYTE*
        CertSize: u32  // DWORD
    ) -> u32;
}
// crates: windows-sys provides ready-made bindings for this API.

$sig = @"
[DllImport("NETAPI32.dll")]
public static extern uint DavAddConnection(IntPtr ConnectionHandle, [MarshalAs(UnmanagedType.LPWStr)] string RemoteName, [MarshalAs(UnmanagedType.LPWStr)] string UserName, [MarshalAs(UnmanagedType.LPWStr)] string Password, IntPtr ClientCert, uint CertSize);
"@
$api = Add-Type -MemberDefinition $sig -Name 'NETAPI32_DavAddConnection' -Namespace Win32 -PassThru
# $api::DavAddConnection(ConnectionHandle, RemoteName, UserName, Password, ClientCert, CertSize)

#uselib "NETAPI32.dll"
#func global DavAddConnection "DavAddConnection" sptr, sptr, sptr, sptr, sptr, sptr
; DavAddConnection ConnectionHandle, RemoteName, UserName, Password, varptr(ClientCert), CertSize   ; 戻り値は stat
; ConnectionHandle : HANDLE* in/out -> "sptr"
; RemoteName : LPCWSTR -> "sptr"
; UserName : LPCWSTR optional -> "sptr"
; Password : LPCWSTR optional -> "sptr"
; ClientCert : BYTE* -> "sptr"
; CertSize : DWORD -> "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 DavAddConnection "DavAddConnection" sptr, wstr, wstr, wstr, var, int
; res = DavAddConnection(ConnectionHandle, RemoteName, UserName, Password, ClientCert, CertSize)
; ConnectionHandle : HANDLE* in/out -> "sptr"
; RemoteName : LPCWSTR -> "wstr"
; UserName : LPCWSTR optional -> "wstr"
; Password : LPCWSTR optional -> "wstr"
; ClientCert : BYTE* -> "var"
; CertSize : DWORD -> "int"
; ※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 DavAddConnection(HANDLE* ConnectionHandle, LPCWSTR RemoteName, LPCWSTR UserName, LPCWSTR Password, BYTE* ClientCert, DWORD CertSize)
#uselib "NETAPI32.dll"
#cfunc global DavAddConnection "DavAddConnection" intptr, wstr, wstr, wstr, var, int
; res = DavAddConnection(ConnectionHandle, RemoteName, UserName, Password, ClientCert, CertSize)
; ConnectionHandle : HANDLE* in/out -> "intptr"
; RemoteName : LPCWSTR -> "wstr"
; UserName : LPCWSTR optional -> "wstr"
; Password : LPCWSTR optional -> "wstr"
; ClientCert : BYTE* -> "var"
; CertSize : DWORD -> "int"
; ※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")
	procDavAddConnection = netapi32.NewProc("DavAddConnection")
)

// ConnectionHandle (HANDLE* in/out), RemoteName (LPCWSTR), UserName (LPCWSTR optional), Password (LPCWSTR optional), ClientCert (BYTE*), CertSize (DWORD)
r1, _, err := procDavAddConnection.Call(
	uintptr(ConnectionHandle),
	uintptr(unsafe.Pointer(windows.StringToUTF16Ptr(RemoteName))),
	uintptr(unsafe.Pointer(windows.StringToUTF16Ptr(UserName))),
	uintptr(unsafe.Pointer(windows.StringToUTF16Ptr(Password))),
	uintptr(ClientCert),
	uintptr(CertSize),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // DWORD

function DavAddConnection(
  ConnectionHandle: Pointer;   // HANDLE* in/out
  RemoteName: PWideChar;   // LPCWSTR
  UserName: PWideChar;   // LPCWSTR optional
  Password: PWideChar;   // LPCWSTR optional
  ClientCert: Pointer;   // BYTE*
  CertSize: DWORD   // DWORD
): DWORD; stdcall;
  external 'NETAPI32.dll' name 'DavAddConnection';

result := DllCall("NETAPI32\DavAddConnection"
    , "Ptr", ConnectionHandle   ; HANDLE* in/out
    , "WStr", RemoteName   ; LPCWSTR
    , "WStr", UserName   ; LPCWSTR optional
    , "WStr", Password   ; LPCWSTR optional
    , "Ptr", ClientCert   ; BYTE*
    , "UInt", CertSize   ; DWORD
    , "UInt")   ; return: DWORD

●DavAddConnection(ConnectionHandle, RemoteName, UserName, Password, ClientCert, CertSize) = DLL("NETAPI32.dll", "dword DavAddConnection(void*, char*, char*, char*, void*, dword)")
# 呼び出し: DavAddConnection(ConnectionHandle, RemoteName, UserName, Password, ClientCert, CertSize)
# ConnectionHandle : HANDLE* in/out -> "void*"
# RemoteName : LPCWSTR -> "char*"
# UserName : LPCWSTR optional -> "char*"
# Password : LPCWSTR optional -> "char*"
# ClientCert : BYTE* -> "void*"
# CertSize : DWORD -> "dword"
# 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)。