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。

#uselib "FLTLIB.dll"
#cfunc global FilterInstanceFindFirst "FilterInstanceFindFirst" wstr, int, sptr, int, var, sptr
; res = FilterInstanceFindFirst(lpFilterName, dwInformationClass, lpBuffer, dwBufferSize, lpBytesReturned, lpFilterInstanceFind)
; lpFilterName : LPCWSTR -> "wstr"
; dwInformationClass : INSTANCE_INFORMATION_CLASS -> "int"
; lpBuffer : void* out -> "sptr"
; dwBufferSize : DWORD -> "int"
; lpBytesReturned : DWORD* out -> "var"
; lpFilterInstanceFind : HANDLE* out -> "sptr"
; ※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。

; HRESULT FilterInstanceFindFirst(LPCWSTR lpFilterName, INSTANCE_INFORMATION_CLASS dwInformationClass, void* lpBuffer, DWORD dwBufferSize, DWORD* lpBytesReturned, HANDLE* lpFilterInstanceFind)
#uselib "FLTLIB.dll"
#cfunc global FilterInstanceFindFirst "FilterInstanceFindFirst" wstr, int, intptr, int, var, intptr
; res = FilterInstanceFindFirst(lpFilterName, dwInformationClass, lpBuffer, dwBufferSize, lpBytesReturned, lpFilterInstanceFind)
; lpFilterName : LPCWSTR -> "wstr"
; dwInformationClass : INSTANCE_INFORMATION_CLASS -> "int"
; lpBuffer : void* out -> "intptr"
; dwBufferSize : DWORD -> "int"
; lpBytesReturned : DWORD* out -> "var"
; lpFilterInstanceFind : HANDLE* out -> "intptr"
; ※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 (
	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)。