IUnknown_SetSite

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

HRESULT IUnknown_SetSite(
    IUnknown* punk,
    IUnknown* punkSite   // optional
);

<DllImport("SHLWAPI.dll", ExactSpelling:=True)>
Public Shared Function IUnknown_SetSite(
    punk As IntPtr,   ' IUnknown*
    punkSite As IntPtr   ' IUnknown* optional
) As Integer
End Function

' punk : IUnknown*
' punkSite : IUnknown* optional
Declare PtrSafe Function IUnknown_SetSite Lib "shlwapi" ( _
    ByVal punk As LongPtr, _
    ByVal punkSite 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_SetSite = ctypes.windll.shlwapi.IUnknown_SetSite
IUnknown_SetSite.restype = ctypes.c_int
IUnknown_SetSite.argtypes = [
    ctypes.c_void_p,  # punk : IUnknown*
    ctypes.c_void_p,  # punkSite : IUnknown* optional
]

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('SHLWAPI.dll')
IUnknown_SetSite = Fiddle::Function.new(
  lib['IUnknown_SetSite'],
  [
    Fiddle::TYPE_VOIDP,  # punk : IUnknown*
    Fiddle::TYPE_VOIDP,  # punkSite : IUnknown* optional
  ],
  Fiddle::TYPE_INT)

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

$sig = @"
[DllImport("SHLWAPI.dll")]
public static extern int IUnknown_SetSite(IntPtr punk, IntPtr punkSite);
"@
$api = Add-Type -MemberDefinition $sig -Name 'SHLWAPI_IUnknown_SetSite' -Namespace Win32 -PassThru
# $api::IUnknown_SetSite(punk, punkSite)

#uselib "SHLWAPI.dll"
#func global IUnknown_SetSite "IUnknown_SetSite" sptr, sptr
; IUnknown_SetSite punk, punkSite   ; 戻り値は stat
; punk : IUnknown* -> "sptr"
; punkSite : IUnknown* optional -> "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_SetSite "IUnknown_SetSite" sptr, sptr
; res = IUnknown_SetSite(punk, punkSite)
; punk : IUnknown* -> "sptr"
; punkSite : IUnknown* optional -> "sptr"

; HRESULT IUnknown_SetSite(IUnknown* punk, IUnknown* punkSite)
#uselib "SHLWAPI.dll"
#cfunc global IUnknown_SetSite "IUnknown_SetSite" intptr, intptr
; res = IUnknown_SetSite(punk, punkSite)
; punk : IUnknown* -> "intptr"
; punkSite : IUnknown* optional -> "intptr"

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

var (
	shlwapi = windows.NewLazySystemDLL("SHLWAPI.dll")
	procIUnknown_SetSite = shlwapi.NewProc("IUnknown_SetSite")
)

// punk (IUnknown*), punkSite (IUnknown* optional)
r1, _, err := procIUnknown_SetSite.Call(
	uintptr(punk),
	uintptr(punkSite),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // HRESULT

function IUnknown_SetSite(
  punk: Pointer;   // IUnknown*
  punkSite: Pointer   // IUnknown* optional
): Integer; stdcall;
  external 'SHLWAPI.dll' name 'IUnknown_SetSite';

result := DllCall("SHLWAPI\IUnknown_SetSite"
    , "Ptr", punk   ; IUnknown*
    , "Ptr", punkSite   ; IUnknown* optional
    , "Int")   ; return: HRESULT

●IUnknown_SetSite(punk, punkSite) = DLL("SHLWAPI.dll", "int IUnknown_SetSite(void*, void*)")
# 呼び出し: IUnknown_SetSite(punk, punkSite)
# punk : IUnknown* -> "void*"
# punkSite : IUnknown* optional -> "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)。