FilterInstanceCreate

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

HRESULT FilterInstanceCreate(
    LPCWSTR lpFilterName,
    LPCWSTR lpVolumeName,
    LPCWSTR lpInstanceName,   // optional
    HFILTER_INSTANCE* hInstance
);

<DllImport("FLTLIB.dll", ExactSpelling:=True)>
Public Shared Function FilterInstanceCreate(
    <MarshalAs(UnmanagedType.LPWStr)> lpFilterName As String,   ' LPCWSTR
    <MarshalAs(UnmanagedType.LPWStr)> lpVolumeName As String,   ' LPCWSTR
    <MarshalAs(UnmanagedType.LPWStr)> lpInstanceName As String,   ' LPCWSTR optional
    <Out> ByRef hInstance As IntPtr   ' HFILTER_INSTANCE* out
) As Integer
End Function

' lpFilterName : LPCWSTR
' lpVolumeName : LPCWSTR
' lpInstanceName : LPCWSTR optional
' hInstance : HFILTER_INSTANCE* out
Declare PtrSafe Function FilterInstanceCreate Lib "fltlib" ( _
    ByVal lpFilterName As LongPtr, _
    ByVal lpVolumeName As LongPtr, _
    ByVal lpInstanceName As LongPtr, _
    ByRef hInstance 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

FilterInstanceCreate = ctypes.windll.fltlib.FilterInstanceCreate
FilterInstanceCreate.restype = ctypes.c_int
FilterInstanceCreate.argtypes = [
    wintypes.LPCWSTR,  # lpFilterName : LPCWSTR
    wintypes.LPCWSTR,  # lpVolumeName : LPCWSTR
    wintypes.LPCWSTR,  # lpInstanceName : LPCWSTR optional
    ctypes.c_void_p,  # hInstance : HFILTER_INSTANCE* out
]

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('FLTLIB.dll')
FilterInstanceCreate = Fiddle::Function.new(
  lib['FilterInstanceCreate'],
  [
    Fiddle::TYPE_VOIDP,  # lpFilterName : LPCWSTR
    Fiddle::TYPE_VOIDP,  # lpVolumeName : LPCWSTR
    Fiddle::TYPE_VOIDP,  # lpInstanceName : LPCWSTR optional
    Fiddle::TYPE_VOIDP,  # hInstance : HFILTER_INSTANCE* out
  ],
  Fiddle::TYPE_INT)

#[link(name = "fltlib")]
extern "system" {
    fn FilterInstanceCreate(
        lpFilterName: *const u16,  // LPCWSTR
        lpVolumeName: *const u16,  // LPCWSTR
        lpInstanceName: *const u16,  // LPCWSTR optional
        hInstance: *mut isize  // HFILTER_INSTANCE* out
    ) -> i32;
}
// crates: windows-sys provides ready-made bindings for this API.

$sig = @"
[DllImport("FLTLIB.dll")]
public static extern int FilterInstanceCreate([MarshalAs(UnmanagedType.LPWStr)] string lpFilterName, [MarshalAs(UnmanagedType.LPWStr)] string lpVolumeName, [MarshalAs(UnmanagedType.LPWStr)] string lpInstanceName, out IntPtr hInstance);
"@
$api = Add-Type -MemberDefinition $sig -Name 'FLTLIB_FilterInstanceCreate' -Namespace Win32 -PassThru
# $api::FilterInstanceCreate(lpFilterName, lpVolumeName, lpInstanceName, hInstance)

#uselib "FLTLIB.dll"
#func global FilterInstanceCreate "FilterInstanceCreate" sptr, sptr, sptr, sptr
; FilterInstanceCreate lpFilterName, lpVolumeName, lpInstanceName, hInstance   ; 戻り値は stat
; lpFilterName : LPCWSTR -> "sptr"
; lpVolumeName : LPCWSTR -> "sptr"
; lpInstanceName : LPCWSTR optional -> "sptr"
; hInstance : HFILTER_INSTANCE* 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 FilterInstanceCreate "FilterInstanceCreate" wstr, wstr, wstr, int
; res = FilterInstanceCreate(lpFilterName, lpVolumeName, lpInstanceName, hInstance)
; lpFilterName : LPCWSTR -> "wstr"
; lpVolumeName : LPCWSTR -> "wstr"
; lpInstanceName : LPCWSTR optional -> "wstr"
; hInstance : HFILTER_INSTANCE* out -> "int"

; HRESULT FilterInstanceCreate(LPCWSTR lpFilterName, LPCWSTR lpVolumeName, LPCWSTR lpInstanceName, HFILTER_INSTANCE* hInstance)
#uselib "FLTLIB.dll"
#cfunc global FilterInstanceCreate "FilterInstanceCreate" wstr, wstr, wstr, int
; res = FilterInstanceCreate(lpFilterName, lpVolumeName, lpInstanceName, hInstance)
; lpFilterName : LPCWSTR -> "wstr"
; lpVolumeName : LPCWSTR -> "wstr"
; lpInstanceName : LPCWSTR optional -> "wstr"
; hInstance : HFILTER_INSTANCE* out -> "int"

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

var (
	fltlib = windows.NewLazySystemDLL("FLTLIB.dll")
	procFilterInstanceCreate = fltlib.NewProc("FilterInstanceCreate")
)

// lpFilterName (LPCWSTR), lpVolumeName (LPCWSTR), lpInstanceName (LPCWSTR optional), hInstance (HFILTER_INSTANCE* out)
r1, _, err := procFilterInstanceCreate.Call(
	uintptr(unsafe.Pointer(windows.StringToUTF16Ptr(lpFilterName))),
	uintptr(unsafe.Pointer(windows.StringToUTF16Ptr(lpVolumeName))),
	uintptr(unsafe.Pointer(windows.StringToUTF16Ptr(lpInstanceName))),
	uintptr(hInstance),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // HRESULT

function FilterInstanceCreate(
  lpFilterName: PWideChar;   // LPCWSTR
  lpVolumeName: PWideChar;   // LPCWSTR
  lpInstanceName: PWideChar;   // LPCWSTR optional
  hInstance: Pointer   // HFILTER_INSTANCE* out
): Integer; stdcall;
  external 'FLTLIB.dll' name 'FilterInstanceCreate';

result := DllCall("FLTLIB\FilterInstanceCreate"
    , "WStr", lpFilterName   ; LPCWSTR
    , "WStr", lpVolumeName   ; LPCWSTR
    , "WStr", lpInstanceName   ; LPCWSTR optional
    , "Ptr", hInstance   ; HFILTER_INSTANCE* out
    , "Int")   ; return: HRESULT

●FilterInstanceCreate(lpFilterName, lpVolumeName, lpInstanceName, hInstance) = DLL("FLTLIB.dll", "int FilterInstanceCreate(char*, char*, char*, void*)")
# 呼び出し: FilterInstanceCreate(lpFilterName, lpVolumeName, lpInstanceName, hInstance)
# lpFilterName : LPCWSTR -> "char*"
# lpVolumeName : LPCWSTR -> "char*"
# lpInstanceName : LPCWSTR optional -> "char*"
# hInstance : HFILTER_INSTANCE* 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)。