WNetGetProviderNameA

// MPR.dll  (ANSI / -A)
#include <windows.h>

WIN32_ERROR WNetGetProviderNameA(
    DWORD dwNetType,
    LPSTR lpProviderName,
    DWORD* lpBufferSize
);

<DllImport("MPR.dll", CharSet:=CharSet.Ansi, ExactSpelling:=True)>
Public Shared Function WNetGetProviderNameA(
    dwNetType As UInteger,   ' DWORD
    <MarshalAs(UnmanagedType.LPStr)> lpProviderName As System.Text.StringBuilder,   ' LPSTR out
    ByRef lpBufferSize As UInteger   ' DWORD* in/out
) As UInteger
End Function

' dwNetType : DWORD
' lpProviderName : LPSTR out
' lpBufferSize : DWORD* in/out
Declare PtrSafe Function WNetGetProviderNameA Lib "mpr" ( _
    ByVal dwNetType As Long, _
    ByVal lpProviderName As String, _
    ByRef lpBufferSize 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

WNetGetProviderNameA = ctypes.windll.mpr.WNetGetProviderNameA
WNetGetProviderNameA.restype = wintypes.DWORD
WNetGetProviderNameA.argtypes = [
    wintypes.DWORD,  # dwNetType : DWORD
    wintypes.LPSTR,  # lpProviderName : LPSTR out
    ctypes.POINTER(wintypes.DWORD),  # lpBufferSize : DWORD* in/out
]

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('MPR.dll')
WNetGetProviderNameA = Fiddle::Function.new(
  lib['WNetGetProviderNameA'],
  [
    -Fiddle::TYPE_INT,  # dwNetType : DWORD
    Fiddle::TYPE_VOIDP,  # lpProviderName : LPSTR out
    Fiddle::TYPE_VOIDP,  # lpBufferSize : DWORD* in/out
  ],
  -Fiddle::TYPE_INT)

#[link(name = "mpr")]
extern "system" {
    fn WNetGetProviderNameA(
        dwNetType: u32,  // DWORD
        lpProviderName: *mut u8,  // LPSTR out
        lpBufferSize: *mut u32  // DWORD* in/out
    ) -> u32;
}
// crates: windows-sys provides ready-made bindings for this API.

$sig = @"
[DllImport("MPR.dll", CharSet = CharSet.Ansi)]
public static extern uint WNetGetProviderNameA(uint dwNetType, [MarshalAs(UnmanagedType.LPStr)] System.Text.StringBuilder lpProviderName, ref uint lpBufferSize);
"@
$api = Add-Type -MemberDefinition $sig -Name 'MPR_WNetGetProviderNameA' -Namespace Win32 -PassThru
# $api::WNetGetProviderNameA(dwNetType, lpProviderName, lpBufferSize)

#uselib "MPR.dll"
#func global WNetGetProviderNameA "WNetGetProviderNameA" sptr, sptr, sptr
; WNetGetProviderNameA dwNetType, varptr(lpProviderName), varptr(lpBufferSize)   ; 戻り値は stat
; dwNetType : DWORD -> "sptr"
; lpProviderName : LPSTR out -> "sptr"
; lpBufferSize : 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。

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

var (
	mpr = windows.NewLazySystemDLL("MPR.dll")
	procWNetGetProviderNameA = mpr.NewProc("WNetGetProviderNameA")
)

// dwNetType (DWORD), lpProviderName (LPSTR out), lpBufferSize (DWORD* in/out)
r1, _, err := procWNetGetProviderNameA.Call(
	uintptr(dwNetType),
	uintptr(lpProviderName),
	uintptr(lpBufferSize),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // WIN32_ERROR

function WNetGetProviderNameA(
  dwNetType: DWORD;   // DWORD
  lpProviderName: PAnsiChar;   // LPSTR out
  lpBufferSize: Pointer   // DWORD* in/out
): DWORD; stdcall;
  external 'MPR.dll' name 'WNetGetProviderNameA';

result := DllCall("MPR\WNetGetProviderNameA"
    , "UInt", dwNetType   ; DWORD
    , "Ptr", lpProviderName   ; LPSTR out
    , "Ptr", lpBufferSize   ; DWORD* in/out
    , "UInt")   ; return: WIN32_ERROR

●WNetGetProviderNameA(dwNetType, lpProviderName, lpBufferSize) = DLL("MPR.dll", "dword WNetGetProviderNameA(dword, char*, void*)")
# 呼び出し: WNetGetProviderNameA(dwNetType, lpProviderName, lpBufferSize)
# dwNetType : DWORD -> "dword"
# lpProviderName : LPSTR out -> "char*"
# lpBufferSize : 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)。

const std = @import("std");

extern "mpr" fn WNetGetProviderNameA(
    dwNetType: u32, // DWORD
    lpProviderName: [*c]u8, // LPSTR out
    lpBufferSize: [*c]u32 // DWORD* in/out
) callconv(std.os.windows.WINAPI) u32;

proc WNetGetProviderNameA(
    dwNetType: uint32,  # DWORD
    lpProviderName: ptr char,  # LPSTR out
    lpBufferSize: ptr uint32  # DWORD* in/out
): uint32 {.importc: "WNetGetProviderNameA", stdcall, dynlib: "MPR.dll".}

pragma(lib, "mpr");
extern(Windows)
uint WNetGetProviderNameA(
    uint dwNetType,   // DWORD
    char* lpProviderName,   // LPSTR out
    uint* lpBufferSize   // DWORD* in/out
);

ccall((:WNetGetProviderNameA, "MPR.dll"), stdcall, UInt32,
      (UInt32, Ptr{UInt8}, Ptr{UInt32}),
      dwNetType, lpProviderName, lpBufferSize)
# dwNetType : DWORD -> UInt32
# lpProviderName : LPSTR out -> Ptr{UInt8}
# lpBufferSize : DWORD* in/out -> Ptr{UInt32}
# stdcall は 32bit のみ意味を持つ(x64 では無視)。

local ffi = require("ffi")
ffi.cdef[[
uint32_t WNetGetProviderNameA(
    uint32_t dwNetType,
    char* lpProviderName,
    uint32_t* lpBufferSize);
]]
local mpr = ffi.load("mpr")
-- mpr.WNetGetProviderNameA(dwNetType, lpProviderName, lpBufferSize)
-- dwNetType : DWORD
-- lpProviderName : LPSTR out
-- lpBufferSize : DWORD* in/out
-- 構造体/GUIDへのポインタは cdef が通るよう void* で表記(実型は各引数コメント参照)。値渡し構造体・enum は対応する typedef を cdef に追加すること。

const koffi = require('koffi');
const lib = koffi.load('MPR.dll');
const WNetGetProviderNameA = lib.func('__stdcall', 'WNetGetProviderNameA', 'uint32_t', ['uint32_t', 'char *', 'uint32_t *']);
// WNetGetProviderNameA(dwNetType, lpProviderName, lpBufferSize)
// dwNetType : DWORD -> 'uint32_t'
// lpProviderName : LPSTR out -> 'char *'
// lpBufferSize : DWORD* in/out -> 'uint32_t *'
// 出力ポインタは koffi.out(...) で包む。構造体は koffi.struct で定義。

const lib = Deno.dlopen("MPR.dll", {
  WNetGetProviderNameA: { parameters: ["u32", "buffer", "pointer"], result: "u32" },
});
// lib.symbols.WNetGetProviderNameA(dwNetType, lpProviderName, lpBufferSize)
// dwNetType : DWORD -> "u32"
// lpProviderName : LPSTR out -> "buffer"
// lpBufferSize : DWORD* in/out -> "pointer"
// 文字列は "buffer"。ANSI(-A) は new TextEncoder() で UTF-8/ANSI バイト列(末尾に \x00)を渡す。
// 値渡し構造体は { struct: [ ...field types... ] } を使用。

<?php
$ffi = FFI::cdef(<<<C
uint32_t WNetGetProviderNameA(
    uint32_t dwNetType,
    char* lpProviderName,
    uint32_t* lpBufferSize);
C, "MPR.dll");
// $ffi->WNetGetProviderNameA(dwNetType, lpProviderName, lpBufferSize);
// dwNetType : DWORD
// lpProviderName : LPSTR out
// lpBufferSize : DWORD* in/out
// 構造体/GUIDへのポインタは cdef が通るよう void* で表記(実型は各引数コメント参照)。値渡し構造体・enum は対応する typedef を cdef に追加すること。
// WINAPI(stdcall): x64 では呼出規約が統一されるため問題なし。x86 では __stdcall 対応のラッパが必要な場合あり。

import com.sun.jna.*;
import com.sun.jna.ptr.*;
import com.sun.jna.win32.StdCallLibrary;
import com.sun.jna.win32.W32APIOptions;

public interface Mpr extends StdCallLibrary {
    Mpr INSTANCE = Native.load("mpr", Mpr.class, W32APIOptions.ASCII_OPTIONS);
    int WNetGetProviderNameA(
        int dwNetType,   // DWORD
        byte[] lpProviderName,   // LPSTR out
        IntByReference lpBufferSize   // DWORD* in/out
    );
}

@[Link("mpr")]
lib LibMPR
  fun WNetGetProviderNameA = WNetGetProviderNameA(
    dwNetType : UInt32,   # DWORD
    lpProviderName : UInt8*,   # LPSTR out
    lpBufferSize : UInt32*   # DWORD* in/out
  ) : UInt32
end
# 構造体/GUID/enum は lib 内に対応する型定義が必要。
# 呼出規約: x64 は規約統一のため OK。x86(32bit)は WINAPI=stdcall だが Crystal の fun に stdcall 付与構文がなく非対応。

import 'dart:ffi';
import 'package:ffi/ffi.dart';

typedef WNetGetProviderNameANative = Uint32 Function(Uint32, Pointer<Utf8>, Pointer<Uint32>);
typedef WNetGetProviderNameADart = int Function(int, Pointer<Utf8>, Pointer<Uint32>);
final WNetGetProviderNameA = DynamicLibrary.open('MPR.dll')
    .lookupFunction<WNetGetProviderNameANative, WNetGetProviderNameADart>('WNetGetProviderNameA');
// dwNetType : DWORD -> Uint32
// lpProviderName : LPSTR out -> Pointer<Utf8>
// lpBufferSize : DWORD* in/out -> Pointer<Uint32>
// 文字列は package:ffi の "...".toNativeUtf16()/toNativeUtf8() で変換。

{$mode objfpc}{$H+}
function WNetGetProviderNameA(
  dwNetType: DWORD;   // DWORD
  lpProviderName: PAnsiChar;   // LPSTR out
  lpBufferSize: Pointer   // DWORD* in/out
): DWORD; stdcall;
  external 'MPR.dll' name 'WNetGetProviderNameA';

import Foreign
import Foreign.C.Types
import Foreign.C.String

foreign import stdcall safe "WNetGetProviderNameA"
  c_WNetGetProviderNameA :: Word32 -> CString -> Ptr Word32 -> IO Word32
-- dwNetType : DWORD -> Word32
-- lpProviderName : LPSTR out -> CString
-- lpBufferSize : DWORD* in/out -> Ptr Word32
-- 要 GHC(Windows)。stdcall は x64 では ccall として扱われる。ブロックする API は safe 呼び出し推奨。

open Ctypes
open Foreign

let wnetgetprovidernamea =
  foreign "WNetGetProviderNameA"
    (uint32_t @-> string @-> (ptr uint32_t) @-> returning uint32_t)
(* dwNetType : DWORD -> uint32_t *)
(* lpProviderName : LPSTR out -> string *)
(* lpBufferSize : DWORD* in/out -> (ptr uint32_t) *)
(* foreign は cdecl 前提。x64 Windows では WINAPI と一致。構造体は ctypes structure を定義のこと。 *)

(cffi:define-foreign-library mpr (t "MPR.dll"))
(cffi:use-foreign-library mpr)

(cffi:defcfun ("WNetGetProviderNameA" wnet-get-provider-name-a :convention :stdcall) :uint32
  (dw-net-type :uint32)   ; DWORD
  (lp-provider-name :pointer)   ; LPSTR out
  (lp-buffer-size :pointer))   ; DWORD* in/out
; isize/usize(INT_PTR/SIZE_T)は x64 前提で :int64/:uint64。x86 では :int32/:uint32。

use Win32::API;
my $WNetGetProviderNameA = Win32::API::More->new('MPR',
    'DWORD WNetGetProviderNameA(DWORD dwNetType, LPSTR lpProviderName, LPVOID lpBufferSize)');
# my $ret = $WNetGetProviderNameA->Call($dwNetType, $lpProviderName, $lpBufferSize);
# dwNetType : DWORD -> DWORD
# lpProviderName : LPSTR out -> LPSTR
# lpBufferSize : DWORD* in/out -> LPVOID
# 値渡し構造体は pack() した文字列、または Win32::API::Struct を使用。