RegisterActiveObject

// OLEAUT32.dll
#include <windows.h>

HRESULT RegisterActiveObject(
    IUnknown* punk,
    const GUID* rclsid,
    ACTIVEOBJECT_FLAGS dwFlags,
    DWORD* pdwRegister
);

<DllImport("OLEAUT32.dll", ExactSpelling:=True)>
Public Shared Function RegisterActiveObject(
    punk As IntPtr,   ' IUnknown*
    ByRef rclsid As Guid,   ' GUID*
    dwFlags As UInteger,   ' ACTIVEOBJECT_FLAGS
    ByRef pdwRegister As UInteger   ' DWORD* in/out
) As Integer
End Function

' punk : IUnknown*
' rclsid : GUID*
' dwFlags : ACTIVEOBJECT_FLAGS
' pdwRegister : DWORD* in/out
Declare PtrSafe Function RegisterActiveObject Lib "oleaut32" ( _
    ByVal punk As LongPtr, _
    ByVal rclsid As LongPtr, _
    ByVal dwFlags As Long, _
    ByRef pdwRegister As Long) As Long
' VBA7前提(PtrSafe)。32bit Office では LongPtr→Long。Integer=16bit / Long=32bit / LongLong=64bit。

import ctypes
from ctypes import wintypes

RegisterActiveObject = ctypes.windll.oleaut32.RegisterActiveObject
RegisterActiveObject.restype = ctypes.c_int
RegisterActiveObject.argtypes = [
    ctypes.c_void_p,  # punk : IUnknown*
    ctypes.c_void_p,  # rclsid : GUID*
    wintypes.DWORD,  # dwFlags : ACTIVEOBJECT_FLAGS
    ctypes.POINTER(wintypes.DWORD),  # pdwRegister : DWORD* in/out
]

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('OLEAUT32.dll')
RegisterActiveObject = Fiddle::Function.new(
  lib['RegisterActiveObject'],
  [
    Fiddle::TYPE_VOIDP,  # punk : IUnknown*
    Fiddle::TYPE_VOIDP,  # rclsid : GUID*
    -Fiddle::TYPE_INT,  # dwFlags : ACTIVEOBJECT_FLAGS
    Fiddle::TYPE_VOIDP,  # pdwRegister : DWORD* in/out
  ],
  Fiddle::TYPE_INT)

#[link(name = "oleaut32")]
extern "system" {
    fn RegisterActiveObject(
        punk: *mut core::ffi::c_void,  // IUnknown*
        rclsid: *const GUID,  // GUID*
        dwFlags: u32,  // ACTIVEOBJECT_FLAGS
        pdwRegister: *mut u32  // DWORD* in/out
    ) -> i32;
}
// crates: windows-sys provides ready-made bindings for this API.

$sig = @"
[DllImport("OLEAUT32.dll")]
public static extern int RegisterActiveObject(IntPtr punk, ref Guid rclsid, uint dwFlags, ref uint pdwRegister);
"@
$api = Add-Type -MemberDefinition $sig -Name 'OLEAUT32_RegisterActiveObject' -Namespace Win32 -PassThru
# $api::RegisterActiveObject(punk, rclsid, dwFlags, pdwRegister)

#uselib "OLEAUT32.dll"
#func global RegisterActiveObject "RegisterActiveObject" sptr, sptr, sptr, sptr
; RegisterActiveObject punk, varptr(rclsid), dwFlags, varptr(pdwRegister)   ; 戻り値は stat
; punk : IUnknown* -> "sptr"
; rclsid : GUID* -> "sptr"
; dwFlags : ACTIVEOBJECT_FLAGS -> "sptr"
; pdwRegister : DWORD* in/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 "OLEAUT32.dll"
#cfunc global RegisterActiveObject "RegisterActiveObject" sptr, var, int, var
; res = RegisterActiveObject(punk, rclsid, dwFlags, pdwRegister)
; punk : IUnknown* -> "sptr"
; rclsid : GUID* -> "var"
; dwFlags : ACTIVEOBJECT_FLAGS -> "int"
; pdwRegister : DWORD* in/out -> "var"
; ※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 RegisterActiveObject(IUnknown* punk, GUID* rclsid, ACTIVEOBJECT_FLAGS dwFlags, DWORD* pdwRegister)
#uselib "OLEAUT32.dll"
#cfunc global RegisterActiveObject "RegisterActiveObject" intptr, var, int, var
; res = RegisterActiveObject(punk, rclsid, dwFlags, pdwRegister)
; punk : IUnknown* -> "intptr"
; rclsid : GUID* -> "var"
; dwFlags : ACTIVEOBJECT_FLAGS -> "int"
; pdwRegister : DWORD* in/out -> "var"
; ※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 (
	oleaut32 = windows.NewLazySystemDLL("OLEAUT32.dll")
	procRegisterActiveObject = oleaut32.NewProc("RegisterActiveObject")
)

// punk (IUnknown*), rclsid (GUID*), dwFlags (ACTIVEOBJECT_FLAGS), pdwRegister (DWORD* in/out)
r1, _, err := procRegisterActiveObject.Call(
	uintptr(punk),
	uintptr(rclsid),
	uintptr(dwFlags),
	uintptr(pdwRegister),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // HRESULT

function RegisterActiveObject(
  punk: Pointer;   // IUnknown*
  rclsid: PGUID;   // GUID*
  dwFlags: DWORD;   // ACTIVEOBJECT_FLAGS
  pdwRegister: Pointer   // DWORD* in/out
): Integer; stdcall;
  external 'OLEAUT32.dll' name 'RegisterActiveObject';

result := DllCall("OLEAUT32\RegisterActiveObject"
    , "Ptr", punk   ; IUnknown*
    , "Ptr", rclsid   ; GUID*
    , "UInt", dwFlags   ; ACTIVEOBJECT_FLAGS
    , "Ptr", pdwRegister   ; DWORD* in/out
    , "Int")   ; return: HRESULT

●RegisterActiveObject(punk, rclsid, dwFlags, pdwRegister) = DLL("OLEAUT32.dll", "int RegisterActiveObject(void*, void*, dword, void*)")
# 呼び出し: RegisterActiveObject(punk, rclsid, dwFlags, pdwRegister)
# punk : IUnknown* -> "void*"
# rclsid : GUID* -> "void*"
# dwFlags : ACTIVEOBJECT_FLAGS -> "dword"
# pdwRegister : DWORD* in/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)。