FilterInstanceFindFirst

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

HRESULT FilterInstanceFindFirst(
    LPCWSTR lpFilterName,
    INSTANCE_INFORMATION_CLASS dwInformationClass,
    void* lpBuffer,
    DWORD dwBufferSize,
    DWORD* lpBytesReturned,
    HANDLE* lpFilterInstanceFind
);

<DllImport("FLTLIB.dll", ExactSpelling:=True)>
Public Shared Function FilterInstanceFindFirst(
    <MarshalAs(UnmanagedType.LPWStr)> lpFilterName As String,   ' LPCWSTR
    dwInformationClass As Integer,   ' INSTANCE_INFORMATION_CLASS
    lpBuffer As IntPtr,   ' void* out
    dwBufferSize As UInteger,   ' DWORD
    <Out> ByRef lpBytesReturned As UInteger,   ' DWORD* out
    lpFilterInstanceFind As IntPtr   ' HANDLE* out
) As Integer
End Function

' lpFilterName : LPCWSTR
' dwInformationClass : INSTANCE_INFORMATION_CLASS
' lpBuffer : void* out
' dwBufferSize : DWORD
' lpBytesReturned : DWORD* out
' lpFilterInstanceFind : HANDLE* out
Declare PtrSafe Function FilterInstanceFindFirst Lib "fltlib" ( _
    ByVal lpFilterName As LongPtr, _
    ByVal dwInformationClass As Long, _
    ByVal lpBuffer As LongPtr, _
    ByVal dwBufferSize As Long, _
    ByRef lpBytesReturned As Long, _
    ByVal lpFilterInstanceFind 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

FilterInstanceFindFirst = ctypes.windll.fltlib.FilterInstanceFindFirst
FilterInstanceFindFirst.restype = ctypes.c_int
FilterInstanceFindFirst.argtypes = [
    wintypes.LPCWSTR,  # lpFilterName : LPCWSTR
    ctypes.c_int,  # dwInformationClass : INSTANCE_INFORMATION_CLASS
    ctypes.POINTER(None),  # lpBuffer : void* out
    wintypes.DWORD,  # dwBufferSize : DWORD
    ctypes.POINTER(wintypes.DWORD),  # lpBytesReturned : DWORD* out
    ctypes.c_void_p,  # lpFilterInstanceFind : HANDLE* out
]

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('FLTLIB.dll')
FilterInstanceFindFirst = Fiddle::Function.new(
  lib['FilterInstanceFindFirst'],
  [
    Fiddle::TYPE_VOIDP,  # lpFilterName : LPCWSTR
    Fiddle::TYPE_INT,  # dwInformationClass : INSTANCE_INFORMATION_CLASS
    Fiddle::TYPE_VOIDP,  # lpBuffer : void* out
    -Fiddle::TYPE_INT,  # dwBufferSize : DWORD
    Fiddle::TYPE_VOIDP,  # lpBytesReturned : DWORD* out
    Fiddle::TYPE_VOIDP,  # lpFilterInstanceFind : HANDLE* out
  ],
  Fiddle::TYPE_INT)

#[link(name = "fltlib")]
extern "system" {
    fn FilterInstanceFindFirst(
        lpFilterName: *const u16,  // LPCWSTR
        dwInformationClass: i32,  // INSTANCE_INFORMATION_CLASS
        lpBuffer: *mut (),  // void* out
        dwBufferSize: u32,  // DWORD
        lpBytesReturned: *mut u32,  // DWORD* out
        lpFilterInstanceFind: *mut *mut core::ffi::c_void  // HANDLE* out
    ) -> i32;
}
// crates: windows-sys provides ready-made bindings for this API.

$sig = @"
[DllImport("FLTLIB.dll")]
public static extern int FilterInstanceFindFirst([MarshalAs(UnmanagedType.LPWStr)] string lpFilterName, int dwInformationClass, IntPtr lpBuffer, uint dwBufferSize, out uint lpBytesReturned, IntPtr lpFilterInstanceFind);
"@
$api = Add-Type -MemberDefinition $sig -Name 'FLTLIB_FilterInstanceFindFirst' -Namespace Win32 -PassThru
# $api::FilterInstanceFindFirst(lpFilterName, dwInformationClass, lpBuffer, dwBufferSize, lpBytesReturned, lpFilterInstanceFind)

#uselib "FLTLIB.dll"
#func global FilterInstanceFindFirst "FilterInstanceFindFirst" sptr, sptr, sptr, sptr, sptr, sptr
; FilterInstanceFindFirst lpFilterName, dwInformationClass, lpBuffer, dwBufferSize, varptr(lpBytesReturned), lpFilterInstanceFind   ; 戻り値は stat
; lpFilterName : LPCWSTR -> "sptr"
; dwInformationClass : INSTANCE_INFORMATION_CLASS -> "sptr"
; lpBuffer : void* out -> "sptr"
; dwBufferSize : DWORD -> "sptr"
; lpBytesReturned : DWORD* out -> "sptr"
; lpFilterInstanceFind : HANDLE* 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 (
	fltlib = windows.NewLazySystemDLL("FLTLIB.dll")
	procFilterInstanceFindFirst = fltlib.NewProc("FilterInstanceFindFirst")
)

// lpFilterName (LPCWSTR), dwInformationClass (INSTANCE_INFORMATION_CLASS), lpBuffer (void* out), dwBufferSize (DWORD), lpBytesReturned (DWORD* out), lpFilterInstanceFind (HANDLE* out)
r1, _, err := procFilterInstanceFindFirst.Call(
	uintptr(unsafe.Pointer(windows.StringToUTF16Ptr(lpFilterName))),
	uintptr(dwInformationClass),
	uintptr(lpBuffer),
	uintptr(dwBufferSize),
	uintptr(lpBytesReturned),
	uintptr(lpFilterInstanceFind),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // HRESULT

function FilterInstanceFindFirst(
  lpFilterName: PWideChar;   // LPCWSTR
  dwInformationClass: Integer;   // INSTANCE_INFORMATION_CLASS
  lpBuffer: Pointer;   // void* out
  dwBufferSize: DWORD;   // DWORD
  lpBytesReturned: Pointer;   // DWORD* out
  lpFilterInstanceFind: Pointer   // HANDLE* out
): Integer; stdcall;
  external 'FLTLIB.dll' name 'FilterInstanceFindFirst';

result := DllCall("FLTLIB\FilterInstanceFindFirst"
    , "WStr", lpFilterName   ; LPCWSTR
    , "Int", dwInformationClass   ; INSTANCE_INFORMATION_CLASS
    , "Ptr", lpBuffer   ; void* out
    , "UInt", dwBufferSize   ; DWORD
    , "Ptr", lpBytesReturned   ; DWORD* out
    , "Ptr", lpFilterInstanceFind   ; HANDLE* out
    , "Int")   ; return: HRESULT

●FilterInstanceFindFirst(lpFilterName, dwInformationClass, lpBuffer, dwBufferSize, lpBytesReturned, lpFilterInstanceFind) = DLL("FLTLIB.dll", "int FilterInstanceFindFirst(char*, int, void*, dword, void*, void*)")
# 呼び出し: FilterInstanceFindFirst(lpFilterName, dwInformationClass, lpBuffer, dwBufferSize, lpBytesReturned, lpFilterInstanceFind)
# lpFilterName : LPCWSTR -> "char*"
# dwInformationClass : INSTANCE_INFORMATION_CLASS -> "int"
# lpBuffer : void* out -> "void*"
# dwBufferSize : DWORD -> "dword"
# lpBytesReturned : DWORD* out -> "void*"
# lpFilterInstanceFind : HANDLE* 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 "fltlib" fn FilterInstanceFindFirst(
    lpFilterName: [*c]const u16, // LPCWSTR
    dwInformationClass: i32, // INSTANCE_INFORMATION_CLASS
    lpBuffer: ?*anyopaque, // void* out
    dwBufferSize: u32, // DWORD
    lpBytesReturned: [*c]u32, // DWORD* out
    lpFilterInstanceFind: ?*anyopaque // HANDLE* out
) callconv(std.os.windows.WINAPI) i32;

proc FilterInstanceFindFirst(
    lpFilterName: WideCString,  # LPCWSTR
    dwInformationClass: int32,  # INSTANCE_INFORMATION_CLASS
    lpBuffer: pointer,  # void* out
    dwBufferSize: uint32,  # DWORD
    lpBytesReturned: ptr uint32,  # DWORD* out
    lpFilterInstanceFind: pointer  # HANDLE* out
): int32 {.importc: "FilterInstanceFindFirst", stdcall, dynlib: "FLTLIB.dll".}

pragma(lib, "fltlib");
extern(Windows)
int FilterInstanceFindFirst(
    const(wchar)* lpFilterName,   // LPCWSTR
    int dwInformationClass,   // INSTANCE_INFORMATION_CLASS
    void* lpBuffer,   // void* out
    uint dwBufferSize,   // DWORD
    uint* lpBytesReturned,   // DWORD* out
    void* lpFilterInstanceFind   // HANDLE* out
);

ccall((:FilterInstanceFindFirst, "FLTLIB.dll"), stdcall, Int32,
      (Cwstring, Int32, Ptr{Cvoid}, UInt32, Ptr{UInt32}, Ptr{Cvoid}),
      lpFilterName, dwInformationClass, lpBuffer, dwBufferSize, lpBytesReturned, lpFilterInstanceFind)
# lpFilterName : LPCWSTR -> Cwstring
# dwInformationClass : INSTANCE_INFORMATION_CLASS -> Int32
# lpBuffer : void* out -> Ptr{Cvoid}
# dwBufferSize : DWORD -> UInt32
# lpBytesReturned : DWORD* out -> Ptr{UInt32}
# lpFilterInstanceFind : HANDLE* out -> Ptr{Cvoid}
# stdcall は 32bit のみ意味を持つ(x64 では無視)。

local ffi = require("ffi")
ffi.cdef[[
int32_t FilterInstanceFindFirst(
    const uint16_t* lpFilterName,
    int32_t dwInformationClass,
    void* lpBuffer,
    uint32_t dwBufferSize,
    uint32_t* lpBytesReturned,
    void* lpFilterInstanceFind);
]]
local fltlib = ffi.load("fltlib")
-- fltlib.FilterInstanceFindFirst(lpFilterName, dwInformationClass, lpBuffer, dwBufferSize, lpBytesReturned, lpFilterInstanceFind)
-- lpFilterName : LPCWSTR
-- dwInformationClass : INSTANCE_INFORMATION_CLASS
-- lpBuffer : void* out
-- dwBufferSize : DWORD
-- lpBytesReturned : DWORD* out
-- lpFilterInstanceFind : HANDLE* 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('FLTLIB.dll');
const FilterInstanceFindFirst = lib.func('__stdcall', 'FilterInstanceFindFirst', 'int32_t', ['str16', 'int32_t', 'void *', 'uint32_t', 'uint32_t *', 'void *']);
// FilterInstanceFindFirst(lpFilterName, dwInformationClass, lpBuffer, dwBufferSize, lpBytesReturned, lpFilterInstanceFind)
// lpFilterName : LPCWSTR -> 'str16'
// dwInformationClass : INSTANCE_INFORMATION_CLASS -> 'int32_t'
// lpBuffer : void* out -> 'void *'
// dwBufferSize : DWORD -> 'uint32_t'
// lpBytesReturned : DWORD* out -> 'uint32_t *'
// lpFilterInstanceFind : HANDLE* out -> 'void *'
// 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("FLTLIB.dll", {
  FilterInstanceFindFirst: { parameters: ["buffer", "i32", "pointer", "u32", "pointer", "pointer"], result: "i32" },
});
// lib.symbols.FilterInstanceFindFirst(lpFilterName, dwInformationClass, lpBuffer, dwBufferSize, lpBytesReturned, lpFilterInstanceFind)
// lpFilterName : LPCWSTR -> "buffer"
// dwInformationClass : INSTANCE_INFORMATION_CLASS -> "i32"
// lpBuffer : void* out -> "pointer"
// dwBufferSize : DWORD -> "u32"
// lpBytesReturned : DWORD* out -> "pointer"
// lpFilterInstanceFind : HANDLE* out -> "pointer"
// 文字列引数は "buffer"(NUL 終端のバイト列を Uint8Array で渡す)。
// 値渡し構造体は { struct: [ ...field types... ] } を使用。

<?php
$ffi = FFI::cdef(<<<C
int32_t FilterInstanceFindFirst(
    const uint16_t* lpFilterName,
    int32_t dwInformationClass,
    void* lpBuffer,
    uint32_t dwBufferSize,
    uint32_t* lpBytesReturned,
    void* lpFilterInstanceFind);
C, "FLTLIB.dll");
// $ffi->FilterInstanceFindFirst(lpFilterName, dwInformationClass, lpBuffer, dwBufferSize, lpBytesReturned, lpFilterInstanceFind);
// lpFilterName : LPCWSTR
// dwInformationClass : INSTANCE_INFORMATION_CLASS
// lpBuffer : void* out
// dwBufferSize : DWORD
// lpBytesReturned : DWORD* out
// lpFilterInstanceFind : HANDLE* 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 Fltlib extends StdCallLibrary {
    Fltlib INSTANCE = Native.load("fltlib", Fltlib.class);
    int FilterInstanceFindFirst(
        WString lpFilterName,   // LPCWSTR
        int dwInformationClass,   // INSTANCE_INFORMATION_CLASS
        Pointer lpBuffer,   // void* out
        int dwBufferSize,   // DWORD
        IntByReference lpBytesReturned,   // DWORD* out
        Pointer lpFilterInstanceFind   // HANDLE* out
    );
}

@[Link("fltlib")]
lib LibFLTLIB
  fun FilterInstanceFindFirst = FilterInstanceFindFirst(
    lpFilterName : UInt16*,   # LPCWSTR
    dwInformationClass : Int32,   # INSTANCE_INFORMATION_CLASS
    lpBuffer : Void*,   # void* out
    dwBufferSize : UInt32,   # DWORD
    lpBytesReturned : UInt32*,   # DWORD* out
    lpFilterInstanceFind : Void*   # HANDLE* out
  ) : Int32
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 FilterInstanceFindFirstNative = Int32 Function(Pointer<Utf16>, Int32, Pointer<Void>, Uint32, Pointer<Uint32>, Pointer<Void>);
typedef FilterInstanceFindFirstDart = int Function(Pointer<Utf16>, int, Pointer<Void>, int, Pointer<Uint32>, Pointer<Void>);
final FilterInstanceFindFirst = DynamicLibrary.open('FLTLIB.dll')
    .lookupFunction<FilterInstanceFindFirstNative, FilterInstanceFindFirstDart>('FilterInstanceFindFirst');
// lpFilterName : LPCWSTR -> Pointer<Utf16>
// dwInformationClass : INSTANCE_INFORMATION_CLASS -> Int32
// lpBuffer : void* out -> Pointer<Void>
// dwBufferSize : DWORD -> Uint32
// lpBytesReturned : DWORD* out -> Pointer<Uint32>
// lpFilterInstanceFind : HANDLE* out -> Pointer<Void>
// 文字列は package:ffi の "...".toNativeUtf16()/toNativeUtf8() で変換。

{$mode objfpc}{$H+}
function FilterInstanceFindFirst(
  lpFilterName: PWideChar;   // LPCWSTR
  dwInformationClass: Integer;   // INSTANCE_INFORMATION_CLASS
  lpBuffer: Pointer;   // void* out
  dwBufferSize: DWORD;   // DWORD
  lpBytesReturned: Pointer;   // DWORD* out
  lpFilterInstanceFind: Pointer   // HANDLE* out
): Integer; stdcall;
  external 'FLTLIB.dll' name 'FilterInstanceFindFirst';

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

foreign import stdcall safe "FilterInstanceFindFirst"
  c_FilterInstanceFindFirst :: CWString -> Int32 -> Ptr () -> Word32 -> Ptr Word32 -> Ptr () -> IO Int32
-- lpFilterName : LPCWSTR -> CWString
-- dwInformationClass : INSTANCE_INFORMATION_CLASS -> Int32
-- lpBuffer : void* out -> Ptr ()
-- dwBufferSize : DWORD -> Word32
-- lpBytesReturned : DWORD* out -> Ptr Word32
-- lpFilterInstanceFind : HANDLE* out -> Ptr ()
-- 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 filterinstancefindfirst =
  foreign "FilterInstanceFindFirst"
    ((ptr uint16_t) @-> int32_t @-> (ptr void) @-> uint32_t @-> (ptr uint32_t) @-> (ptr void) @-> returning int32_t)
(* lpFilterName : LPCWSTR -> (ptr uint16_t) *)
(* dwInformationClass : INSTANCE_INFORMATION_CLASS -> int32_t *)
(* lpBuffer : void* out -> (ptr void) *)
(* dwBufferSize : DWORD -> uint32_t *)
(* lpBytesReturned : DWORD* out -> (ptr uint32_t) *)
(* lpFilterInstanceFind : HANDLE* out -> (ptr void) *)
(* 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 fltlib (t "FLTLIB.dll"))
(cffi:use-foreign-library fltlib)

(cffi:defcfun ("FilterInstanceFindFirst" filter-instance-find-first :convention :stdcall) :int32
  (lp-filter-name (:string :encoding :utf-16le))   ; LPCWSTR
  (dw-information-class :int32)   ; INSTANCE_INFORMATION_CLASS
  (lp-buffer :pointer)   ; void* out
  (dw-buffer-size :uint32)   ; DWORD
  (lp-bytes-returned :pointer)   ; DWORD* out
  (lp-filter-instance-find :pointer))   ; HANDLE* out
; isize/usize(INT_PTR/SIZE_T)は x64 前提で :int64/:uint64。x86 では :int32/:uint32。

use Win32::API;
my $FilterInstanceFindFirst = Win32::API::More->new('FLTLIB',
    'int FilterInstanceFindFirst(LPCWSTR lpFilterName, int dwInformationClass, LPVOID lpBuffer, DWORD dwBufferSize, LPVOID lpBytesReturned, HANDLE lpFilterInstanceFind)');
# my $ret = $FilterInstanceFindFirst->Call($lpFilterName, $dwInformationClass, $lpBuffer, $dwBufferSize, $lpBytesReturned, $lpFilterInstanceFind);
# lpFilterName : LPCWSTR -> LPCWSTR
# dwInformationClass : INSTANCE_INFORMATION_CLASS -> int
# lpBuffer : void* out -> LPVOID
# dwBufferSize : DWORD -> DWORD
# lpBytesReturned : DWORD* out -> LPVOID
# lpFilterInstanceFind : HANDLE* out -> HANDLE
# 値渡し構造体は pack() した文字列、または Win32::API::Struct を使用。