ILAppendID

// SHELL32.dll
#include <windows.h>

ITEMIDLIST* ILAppendID(
    ITEMIDLIST* pidl,   // optional
    SHITEMID* pmkid,
    BOOL fAppend
);

<DllImport("SHELL32.dll", ExactSpelling:=True)>
Public Shared Function ILAppendID(
    pidl As IntPtr,   ' ITEMIDLIST* optional
    pmkid As IntPtr,   ' SHITEMID*
    fAppend As Boolean   ' BOOL
) As IntPtr
End Function

' pidl : ITEMIDLIST* optional
' pmkid : SHITEMID*
' fAppend : BOOL
Declare PtrSafe Function ILAppendID Lib "shell32" ( _
    ByVal pidl As LongPtr, _
    ByVal pmkid As LongPtr, _
    ByVal fAppend As Long) As LongPtr
' VBA7前提(PtrSafe)。32bit Office では LongPtr→Long。Integer=16bit / Long=32bit / LongLong=64bit。

import ctypes
from ctypes import wintypes

ILAppendID = ctypes.windll.shell32.ILAppendID
ILAppendID.restype = ctypes.c_void_p
ILAppendID.argtypes = [
    ctypes.c_void_p,  # pidl : ITEMIDLIST* optional
    ctypes.c_void_p,  # pmkid : SHITEMID*
    wintypes.BOOL,  # fAppend : BOOL
]

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('SHELL32.dll')
ILAppendID = Fiddle::Function.new(
  lib['ILAppendID'],
  [
    Fiddle::TYPE_VOIDP,  # pidl : ITEMIDLIST* optional
    Fiddle::TYPE_VOIDP,  # pmkid : SHITEMID*
    Fiddle::TYPE_INT,  # fAppend : BOOL
  ],
  Fiddle::TYPE_VOIDP)

#[link(name = "shell32")]
extern "system" {
    fn ILAppendID(
        pidl: *mut ITEMIDLIST,  // ITEMIDLIST* optional
        pmkid: *mut SHITEMID,  // SHITEMID*
        fAppend: i32  // BOOL
    ) -> *mut ITEMIDLIST;
}
// crates: windows-sys provides ready-made bindings for this API.

$sig = @"
[DllImport("SHELL32.dll")]
public static extern IntPtr ILAppendID(IntPtr pidl, IntPtr pmkid, bool fAppend);
"@
$api = Add-Type -MemberDefinition $sig -Name 'SHELL32_ILAppendID' -Namespace Win32 -PassThru
# $api::ILAppendID(pidl, pmkid, fAppend)

#uselib "SHELL32.dll"
#func global ILAppendID "ILAppendID" sptr, sptr, sptr
; ILAppendID varptr(pidl), varptr(pmkid), fAppend   ; 戻り値は stat
; pidl : ITEMIDLIST* optional -> "sptr"
; pmkid : SHITEMID* -> "sptr"
; fAppend : BOOL -> "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 "SHELL32.dll"
#cfunc global ILAppendID "ILAppendID" var, var, int
; res = ILAppendID(pidl, pmkid, fAppend)
; pidl : ITEMIDLIST* optional -> "var"
; pmkid : SHITEMID* -> "var"
; fAppend : BOOL -> "int"
; ※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。

; ITEMIDLIST* ILAppendID(ITEMIDLIST* pidl, SHITEMID* pmkid, BOOL fAppend)
#uselib "SHELL32.dll"
#cfunc global ILAppendID "ILAppendID" var, var, int
; res = ILAppendID(pidl, pmkid, fAppend)
; pidl : ITEMIDLIST* optional -> "var"
; pmkid : SHITEMID* -> "var"
; fAppend : BOOL -> "int"
; ※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 (
	shell32 = windows.NewLazySystemDLL("SHELL32.dll")
	procILAppendID = shell32.NewProc("ILAppendID")
)

// pidl (ITEMIDLIST* optional), pmkid (SHITEMID*), fAppend (BOOL)
r1, _, err := procILAppendID.Call(
	uintptr(pidl),
	uintptr(pmkid),
	uintptr(fAppend),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // ITEMIDLIST*

function ILAppendID(
  pidl: Pointer;   // ITEMIDLIST* optional
  pmkid: Pointer;   // SHITEMID*
  fAppend: BOOL   // BOOL
): Pointer; stdcall;
  external 'SHELL32.dll' name 'ILAppendID';

result := DllCall("SHELL32\ILAppendID"
    , "Ptr", pidl   ; ITEMIDLIST* optional
    , "Ptr", pmkid   ; SHITEMID*
    , "Int", fAppend   ; BOOL
    , "Ptr")   ; return: ITEMIDLIST*

●ILAppendID(pidl, pmkid, fAppend) = DLL("SHELL32.dll", "void* ILAppendID(void*, void*, bool)")
# 呼び出し: ILAppendID(pidl, pmkid, fAppend)
# pidl : ITEMIDLIST* optional -> "void*"
# pmkid : SHITEMID* -> "void*"
# fAppend : BOOL -> "bool"
# 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)。