FindFirstVolumeA

// KERNEL32.dll  (ANSI / -A)
#include <windows.h>

HANDLE FindFirstVolumeA(
    LPSTR lpszVolumeName,
    DWORD cchBufferLength
);

<DllImport("KERNEL32.dll", CharSet:=CharSet.Ansi, SetLastError:=True, ExactSpelling:=True)>
Public Shared Function FindFirstVolumeA(
    <MarshalAs(UnmanagedType.LPStr)> lpszVolumeName As System.Text.StringBuilder,   ' LPSTR out
    cchBufferLength As UInteger   ' DWORD
) As IntPtr
End Function

' lpszVolumeName : LPSTR out
' cchBufferLength : DWORD
Declare PtrSafe Function FindFirstVolumeA Lib "kernel32" ( _
    ByVal lpszVolumeName As String, _
    ByVal cchBufferLength As Long) As LongPtr
' VBA7前提(PtrSafe)。32bit Office では LongPtr→Long。Integer=16bit / Long=32bit / LongLong=64bit。

import ctypes
from ctypes import wintypes

FindFirstVolumeA = ctypes.windll.kernel32.FindFirstVolumeA
FindFirstVolumeA.restype = ctypes.c_void_p
FindFirstVolumeA.argtypes = [
    wintypes.LPSTR,  # lpszVolumeName : LPSTR out
    wintypes.DWORD,  # cchBufferLength : DWORD
]
# GetLastError: use ctypes.GetLastError() (or ctypes.WinDLL(use_last_error=True))

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('KERNEL32.dll')
FindFirstVolumeA = Fiddle::Function.new(
  lib['FindFirstVolumeA'],
  [
    Fiddle::TYPE_VOIDP,  # lpszVolumeName : LPSTR out
    -Fiddle::TYPE_INT,  # cchBufferLength : DWORD
  ],
  Fiddle::TYPE_VOIDP)

#[link(name = "kernel32")]
extern "system" {
    fn FindFirstVolumeA(
        lpszVolumeName: *mut u8,  // LPSTR out
        cchBufferLength: u32  // DWORD
    ) -> *mut core::ffi::c_void;
}
// crates: windows-sys provides ready-made bindings for this API.

$sig = @"
[DllImport("KERNEL32.dll", CharSet = CharSet.Ansi, SetLastError = true)]
public static extern IntPtr FindFirstVolumeA([MarshalAs(UnmanagedType.LPStr)] System.Text.StringBuilder lpszVolumeName, uint cchBufferLength);
"@
$api = Add-Type -MemberDefinition $sig -Name 'KERNEL32_FindFirstVolumeA' -Namespace Win32 -PassThru
# $api::FindFirstVolumeA(lpszVolumeName, cchBufferLength)

#uselib "KERNEL32.dll"
#func global FindFirstVolumeA "FindFirstVolumeA" sptr, sptr
; FindFirstVolumeA varptr(lpszVolumeName), cchBufferLength   ; 戻り値は stat
; lpszVolumeName : LPSTR out -> "sptr"
; cchBufferLength : 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。

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

var (
	kernel32 = windows.NewLazySystemDLL("KERNEL32.dll")
	procFindFirstVolumeA = kernel32.NewProc("FindFirstVolumeA")
)

// lpszVolumeName (LPSTR out), cchBufferLength (DWORD)
r1, _, err := procFindFirstVolumeA.Call(
	uintptr(lpszVolumeName),
	uintptr(cchBufferLength),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // HANDLE

function FindFirstVolumeA(
  lpszVolumeName: PAnsiChar;   // LPSTR out
  cchBufferLength: DWORD   // DWORD
): THandle; stdcall;
  external 'KERNEL32.dll' name 'FindFirstVolumeA';

result := DllCall("KERNEL32\FindFirstVolumeA"
    , "Ptr", lpszVolumeName   ; LPSTR out
    , "UInt", cchBufferLength   ; DWORD
    , "Ptr")   ; return: HANDLE

●FindFirstVolumeA(lpszVolumeName, cchBufferLength) = DLL("KERNEL32.dll", "void* FindFirstVolumeA(char*, dword)")
# 呼び出し: FindFirstVolumeA(lpszVolumeName, cchBufferLength)
# lpszVolumeName : LPSTR out -> "char*"
# cchBufferLength : 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)。

const std = @import("std");

extern "kernel32" fn FindFirstVolumeA(
    lpszVolumeName: [*c]u8, // LPSTR out
    cchBufferLength: u32 // DWORD
) callconv(std.os.windows.WINAPI) ?*anyopaque;

proc FindFirstVolumeA(
    lpszVolumeName: ptr char,  # LPSTR out
    cchBufferLength: uint32  # DWORD
): pointer {.importc: "FindFirstVolumeA", stdcall, dynlib: "KERNEL32.dll".}

pragma(lib, "kernel32");
extern(Windows)
void* FindFirstVolumeA(
    char* lpszVolumeName,   // LPSTR out
    uint cchBufferLength   // DWORD
);

ccall((:FindFirstVolumeA, "KERNEL32.dll"), stdcall, Ptr{Cvoid},
      (Ptr{UInt8}, UInt32),
      lpszVolumeName, cchBufferLength)
# lpszVolumeName : LPSTR out -> Ptr{UInt8}
# cchBufferLength : DWORD -> UInt32
# stdcall は 32bit のみ意味を持つ(x64 では無視)。

local ffi = require("ffi")
ffi.cdef[[
void* FindFirstVolumeA(
    char* lpszVolumeName,
    uint32_t cchBufferLength);
]]
local kernel32 = ffi.load("kernel32")
-- kernel32.FindFirstVolumeA(lpszVolumeName, cchBufferLength)
-- lpszVolumeName : LPSTR out
-- cchBufferLength : DWORD
-- 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('KERNEL32.dll');
const FindFirstVolumeA = lib.func('__stdcall', 'FindFirstVolumeA', 'void *', ['char *', 'uint32_t']);
// FindFirstVolumeA(lpszVolumeName, cchBufferLength)
// lpszVolumeName : LPSTR out -> 'char *'
// cchBufferLength : DWORD -> '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("KERNEL32.dll", {
  FindFirstVolumeA: { parameters: ["buffer", "u32"], result: "pointer" },
});
// lib.symbols.FindFirstVolumeA(lpszVolumeName, cchBufferLength)
// lpszVolumeName : LPSTR out -> "buffer"
// cchBufferLength : DWORD -> "u32"
// 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
void* FindFirstVolumeA(
    char* lpszVolumeName,
    uint32_t cchBufferLength);
C, "KERNEL32.dll");
// $ffi->FindFirstVolumeA(lpszVolumeName, cchBufferLength);
// lpszVolumeName : LPSTR out
// cchBufferLength : DWORD
// 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 Kernel32 extends StdCallLibrary {
    Kernel32 INSTANCE = Native.load("kernel32", Kernel32.class, W32APIOptions.ASCII_OPTIONS);
    Pointer FindFirstVolumeA(
        byte[] lpszVolumeName,   // LPSTR out
        int cchBufferLength   // DWORD
    );
}

@[Link("kernel32")]
lib LibKERNEL32
  fun FindFirstVolumeA = FindFirstVolumeA(
    lpszVolumeName : UInt8*,   # LPSTR out
    cchBufferLength : UInt32   # DWORD
  ) : Void*
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 FindFirstVolumeANative = Pointer<Void> Function(Pointer<Utf8>, Uint32);
typedef FindFirstVolumeADart = Pointer<Void> Function(Pointer<Utf8>, int);
final FindFirstVolumeA = DynamicLibrary.open('KERNEL32.dll')
    .lookupFunction<FindFirstVolumeANative, FindFirstVolumeADart>('FindFirstVolumeA');
// lpszVolumeName : LPSTR out -> Pointer<Utf8>
// cchBufferLength : DWORD -> Uint32
// 文字列は package:ffi の "...".toNativeUtf16()/toNativeUtf8() で変換。

{$mode objfpc}{$H+}
function FindFirstVolumeA(
  lpszVolumeName: PAnsiChar;   // LPSTR out
  cchBufferLength: DWORD   // DWORD
): THandle; stdcall;
  external 'KERNEL32.dll' name 'FindFirstVolumeA';

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

foreign import stdcall safe "FindFirstVolumeA"
  c_FindFirstVolumeA :: CString -> Word32 -> IO (Ptr ())
-- lpszVolumeName : LPSTR out -> CString
-- cchBufferLength : DWORD -> 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 findfirstvolumea =
  foreign "FindFirstVolumeA"
    (string @-> uint32_t @-> returning (ptr void))
(* lpszVolumeName : LPSTR out -> string *)
(* cchBufferLength : DWORD -> 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 kernel32 (t "KERNEL32.dll"))
(cffi:use-foreign-library kernel32)

(cffi:defcfun ("FindFirstVolumeA" find-first-volume-a :convention :stdcall) :pointer
  (lpsz-volume-name :pointer)   ; LPSTR out
  (cch-buffer-length :uint32))   ; DWORD
; isize/usize(INT_PTR/SIZE_T)は x64 前提で :int64/:uint64。x86 では :int32/:uint32。

use Win32::API;
my $FindFirstVolumeA = Win32::API::More->new('KERNEL32',
    'HANDLE FindFirstVolumeA(LPSTR lpszVolumeName, DWORD cchBufferLength)');
# my $ret = $FindFirstVolumeA->Call($lpszVolumeName, $cchBufferLength);
# lpszVolumeName : LPSTR out -> LPSTR
# cchBufferLength : DWORD -> DWORD
# 値渡し構造体は pack() した文字列、または Win32::API::Struct を使用。