FilterCreate

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

HRESULT FilterCreate(
    LPCWSTR lpFilterName,
    HFILTER* hFilter
);

<DllImport("FLTLIB.dll", ExactSpelling:=True)>
Public Shared Function FilterCreate(
    <MarshalAs(UnmanagedType.LPWStr)> lpFilterName As String,   ' LPCWSTR
    <Out> ByRef hFilter As IntPtr   ' HFILTER* out
) As Integer
End Function

' lpFilterName : LPCWSTR
' hFilter : HFILTER* out
Declare PtrSafe Function FilterCreate Lib "fltlib" ( _
    ByVal lpFilterName As LongPtr, _
    ByRef hFilter 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

FilterCreate = ctypes.windll.fltlib.FilterCreate
FilterCreate.restype = ctypes.c_int
FilterCreate.argtypes = [
    wintypes.LPCWSTR,  # lpFilterName : LPCWSTR
    ctypes.c_void_p,  # hFilter : HFILTER* out
]

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('FLTLIB.dll')
FilterCreate = Fiddle::Function.new(
  lib['FilterCreate'],
  [
    Fiddle::TYPE_VOIDP,  # lpFilterName : LPCWSTR
    Fiddle::TYPE_VOIDP,  # hFilter : HFILTER* out
  ],
  Fiddle::TYPE_INT)

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

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

#uselib "FLTLIB.dll"
#func global FilterCreate "FilterCreate" sptr, sptr
; FilterCreate lpFilterName, hFilter   ; 戻り値は stat
; lpFilterName : LPCWSTR -> "sptr"
; hFilter : HFILTER* 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 FilterCreate "FilterCreate" wstr, int
; res = FilterCreate(lpFilterName, hFilter)
; lpFilterName : LPCWSTR -> "wstr"
; hFilter : HFILTER* out -> "int"

; HRESULT FilterCreate(LPCWSTR lpFilterName, HFILTER* hFilter)
#uselib "FLTLIB.dll"
#cfunc global FilterCreate "FilterCreate" wstr, int
; res = FilterCreate(lpFilterName, hFilter)
; lpFilterName : LPCWSTR -> "wstr"
; hFilter : HFILTER* out -> "int"

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

var (
	fltlib = windows.NewLazySystemDLL("FLTLIB.dll")
	procFilterCreate = fltlib.NewProc("FilterCreate")
)

// lpFilterName (LPCWSTR), hFilter (HFILTER* out)
r1, _, err := procFilterCreate.Call(
	uintptr(unsafe.Pointer(windows.StringToUTF16Ptr(lpFilterName))),
	uintptr(hFilter),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // HRESULT

function FilterCreate(
  lpFilterName: PWideChar;   // LPCWSTR
  hFilter: Pointer   // HFILTER* out
): Integer; stdcall;
  external 'FLTLIB.dll' name 'FilterCreate';

result := DllCall("FLTLIB\FilterCreate"
    , "WStr", lpFilterName   ; LPCWSTR
    , "Ptr", hFilter   ; HFILTER* out
    , "Int")   ; return: HRESULT

●FilterCreate(lpFilterName, hFilter) = DLL("FLTLIB.dll", "int FilterCreate(char*, void*)")
# 呼び出し: FilterCreate(lpFilterName, hFilter)
# lpFilterName : LPCWSTR -> "char*"
# hFilter : HFILTER* 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)。