IUnknown_QueryService

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

HRESULT IUnknown_QueryService(
    IUnknown* punk,   // optional
    const GUID* guidService,
    const GUID* riid,
    void** ppvOut
);

<DllImport("SHLWAPI.dll", ExactSpelling:=True)>
Public Shared Function IUnknown_QueryService(
    punk As IntPtr,   ' IUnknown* optional
    ByRef guidService As Guid,   ' GUID*
    ByRef riid As Guid,   ' GUID*
    ppvOut As IntPtr   ' void** out
) As Integer
End Function

' punk : IUnknown* optional
' guidService : GUID*
' riid : GUID*
' ppvOut : void** out
Declare PtrSafe Function IUnknown_QueryService Lib "shlwapi" ( _
    ByVal punk As LongPtr, _
    ByVal guidService As LongPtr, _
    ByVal riid As LongPtr, _
    ByVal ppvOut 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

IUnknown_QueryService = ctypes.windll.shlwapi.IUnknown_QueryService
IUnknown_QueryService.restype = ctypes.c_int
IUnknown_QueryService.argtypes = [
    ctypes.c_void_p,  # punk : IUnknown* optional
    ctypes.c_void_p,  # guidService : GUID*
    ctypes.c_void_p,  # riid : GUID*
    ctypes.c_void_p,  # ppvOut : void** out
]

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('SHLWAPI.dll')
IUnknown_QueryService = Fiddle::Function.new(
  lib['IUnknown_QueryService'],
  [
    Fiddle::TYPE_VOIDP,  # punk : IUnknown* optional
    Fiddle::TYPE_VOIDP,  # guidService : GUID*
    Fiddle::TYPE_VOIDP,  # riid : GUID*
    Fiddle::TYPE_VOIDP,  # ppvOut : void** out
  ],
  Fiddle::TYPE_INT)

#[link(name = "shlwapi")]
extern "system" {
    fn IUnknown_QueryService(
        punk: *mut core::ffi::c_void,  // IUnknown* optional
        guidService: *const GUID,  // GUID*
        riid: *const GUID,  // GUID*
        ppvOut: *mut *mut ()  // void** out
    ) -> i32;
}
// crates: windows-sys provides ready-made bindings for this API.

$sig = @"
[DllImport("SHLWAPI.dll")]
public static extern int IUnknown_QueryService(IntPtr punk, ref Guid guidService, ref Guid riid, IntPtr ppvOut);
"@
$api = Add-Type -MemberDefinition $sig -Name 'SHLWAPI_IUnknown_QueryService' -Namespace Win32 -PassThru
# $api::IUnknown_QueryService(punk, guidService, riid, ppvOut)

#uselib "SHLWAPI.dll"
#func global IUnknown_QueryService "IUnknown_QueryService" sptr, sptr, sptr, sptr
; IUnknown_QueryService punk, varptr(guidService), varptr(riid), ppvOut   ; 戻り値は stat
; punk : IUnknown* optional -> "sptr"
; guidService : GUID* -> "sptr"
; riid : GUID* -> "sptr"
; ppvOut : 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 "SHLWAPI.dll"
#cfunc global IUnknown_QueryService "IUnknown_QueryService" sptr, var, var, sptr
; res = IUnknown_QueryService(punk, guidService, riid, ppvOut)
; punk : IUnknown* optional -> "sptr"
; guidService : GUID* -> "var"
; riid : GUID* -> "var"
; ppvOut : void** 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 IUnknown_QueryService(IUnknown* punk, GUID* guidService, GUID* riid, void** ppvOut)
#uselib "SHLWAPI.dll"
#cfunc global IUnknown_QueryService "IUnknown_QueryService" intptr, var, var, intptr
; res = IUnknown_QueryService(punk, guidService, riid, ppvOut)
; punk : IUnknown* optional -> "intptr"
; guidService : GUID* -> "var"
; riid : GUID* -> "var"
; ppvOut : void** 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 (
	shlwapi = windows.NewLazySystemDLL("SHLWAPI.dll")
	procIUnknown_QueryService = shlwapi.NewProc("IUnknown_QueryService")
)

// punk (IUnknown* optional), guidService (GUID*), riid (GUID*), ppvOut (void** out)
r1, _, err := procIUnknown_QueryService.Call(
	uintptr(punk),
	uintptr(guidService),
	uintptr(riid),
	uintptr(ppvOut),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // HRESULT

function IUnknown_QueryService(
  punk: Pointer;   // IUnknown* optional
  guidService: PGUID;   // GUID*
  riid: PGUID;   // GUID*
  ppvOut: Pointer   // void** out
): Integer; stdcall;
  external 'SHLWAPI.dll' name 'IUnknown_QueryService';

result := DllCall("SHLWAPI\IUnknown_QueryService"
    , "Ptr", punk   ; IUnknown* optional
    , "Ptr", guidService   ; GUID*
    , "Ptr", riid   ; GUID*
    , "Ptr", ppvOut   ; void** out
    , "Int")   ; return: HRESULT

●IUnknown_QueryService(punk, guidService, riid, ppvOut) = DLL("SHLWAPI.dll", "int IUnknown_QueryService(void*, void*, void*, void*)")
# 呼び出し: IUnknown_QueryService(punk, guidService, riid, ppvOut)
# punk : IUnknown* optional -> "void*"
# guidService : GUID* -> "void*"
# riid : GUID* -> "void*"
# ppvOut : 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)。