LoadIFilter

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

HRESULT LoadIFilter(
    LPCWSTR pwcsPath,
    IUnknown* pUnkOuter,
    void** ppIUnk
);

<DllImport("query.dll", ExactSpelling:=True)>
Public Shared Function LoadIFilter(
    <MarshalAs(UnmanagedType.LPWStr)> pwcsPath As String,   ' LPCWSTR
    pUnkOuter As IntPtr,   ' IUnknown*
    ppIUnk As IntPtr   ' void** out
) As Integer
End Function

' pwcsPath : LPCWSTR
' pUnkOuter : IUnknown*
' ppIUnk : void** out
Declare PtrSafe Function LoadIFilter Lib "query" ( _
    ByVal pwcsPath As LongPtr, _
    ByVal pUnkOuter As LongPtr, _
    ByVal ppIUnk 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

LoadIFilter = ctypes.windll.query.LoadIFilter
LoadIFilter.restype = ctypes.c_int
LoadIFilter.argtypes = [
    wintypes.LPCWSTR,  # pwcsPath : LPCWSTR
    ctypes.c_void_p,  # pUnkOuter : IUnknown*
    ctypes.c_void_p,  # ppIUnk : void** out
]

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('query.dll')
LoadIFilter = Fiddle::Function.new(
  lib['LoadIFilter'],
  [
    Fiddle::TYPE_VOIDP,  # pwcsPath : LPCWSTR
    Fiddle::TYPE_VOIDP,  # pUnkOuter : IUnknown*
    Fiddle::TYPE_VOIDP,  # ppIUnk : void** out
  ],
  Fiddle::TYPE_INT)

#[link(name = "query")]
extern "system" {
    fn LoadIFilter(
        pwcsPath: *const u16,  // LPCWSTR
        pUnkOuter: *mut core::ffi::c_void,  // IUnknown*
        ppIUnk: *mut *mut ()  // void** out
    ) -> i32;
}
// crates: windows-sys provides ready-made bindings for this API.

$sig = @"
[DllImport("query.dll")]
public static extern int LoadIFilter([MarshalAs(UnmanagedType.LPWStr)] string pwcsPath, IntPtr pUnkOuter, IntPtr ppIUnk);
"@
$api = Add-Type -MemberDefinition $sig -Name 'query_LoadIFilter' -Namespace Win32 -PassThru
# $api::LoadIFilter(pwcsPath, pUnkOuter, ppIUnk)

#uselib "query.dll"
#func global LoadIFilter "LoadIFilter" sptr, sptr, sptr
; LoadIFilter pwcsPath, pUnkOuter, ppIUnk   ; 戻り値は stat
; pwcsPath : LPCWSTR -> "sptr"
; pUnkOuter : IUnknown* -> "sptr"
; ppIUnk : void** 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 "query.dll"
#cfunc global LoadIFilter "LoadIFilter" wstr, sptr, sptr
; res = LoadIFilter(pwcsPath, pUnkOuter, ppIUnk)
; pwcsPath : LPCWSTR -> "wstr"
; pUnkOuter : IUnknown* -> "sptr"
; ppIUnk : void** out -> "sptr"

; HRESULT LoadIFilter(LPCWSTR pwcsPath, IUnknown* pUnkOuter, void** ppIUnk)
#uselib "query.dll"
#cfunc global LoadIFilter "LoadIFilter" wstr, intptr, intptr
; res = LoadIFilter(pwcsPath, pUnkOuter, ppIUnk)
; pwcsPath : LPCWSTR -> "wstr"
; pUnkOuter : IUnknown* -> "intptr"
; ppIUnk : void** out -> "intptr"

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

var (
	query = windows.NewLazySystemDLL("query.dll")
	procLoadIFilter = query.NewProc("LoadIFilter")
)

// pwcsPath (LPCWSTR), pUnkOuter (IUnknown*), ppIUnk (void** out)
r1, _, err := procLoadIFilter.Call(
	uintptr(unsafe.Pointer(windows.StringToUTF16Ptr(pwcsPath))),
	uintptr(pUnkOuter),
	uintptr(ppIUnk),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // HRESULT

function LoadIFilter(
  pwcsPath: PWideChar;   // LPCWSTR
  pUnkOuter: Pointer;   // IUnknown*
  ppIUnk: Pointer   // void** out
): Integer; stdcall;
  external 'query.dll' name 'LoadIFilter';

result := DllCall("query\LoadIFilter"
    , "WStr", pwcsPath   ; LPCWSTR
    , "Ptr", pUnkOuter   ; IUnknown*
    , "Ptr", ppIUnk   ; void** out
    , "Int")   ; return: HRESULT

●LoadIFilter(pwcsPath, pUnkOuter, ppIUnk) = DLL("query.dll", "int LoadIFilter(char*, void*, void*)")
# 呼び出し: LoadIFilter(pwcsPath, pUnkOuter, ppIUnk)
# pwcsPath : LPCWSTR -> "char*"
# pUnkOuter : IUnknown* -> "void*"
# ppIUnk : void** 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)。