SHOpenFolderAndSelectItems

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

HRESULT SHOpenFolderAndSelectItems(
    ITEMIDLIST* pidlFolder,
    DWORD cidl,
    ITEMIDLIST** apidl,   // optional
    DWORD dwFlags
);

<DllImport("SHELL32.dll", ExactSpelling:=True)>
Public Shared Function SHOpenFolderAndSelectItems(
    pidlFolder As IntPtr,   ' ITEMIDLIST*
    cidl As UInteger,   ' DWORD
    apidl As IntPtr,   ' ITEMIDLIST** optional
    dwFlags As UInteger   ' DWORD
) As Integer
End Function

' pidlFolder : ITEMIDLIST*
' cidl : DWORD
' apidl : ITEMIDLIST** optional
' dwFlags : DWORD
Declare PtrSafe Function SHOpenFolderAndSelectItems Lib "shell32" ( _
    ByVal pidlFolder As LongPtr, _
    ByVal cidl As Long, _
    ByVal apidl As LongPtr, _
    ByVal dwFlags 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

SHOpenFolderAndSelectItems = ctypes.windll.shell32.SHOpenFolderAndSelectItems
SHOpenFolderAndSelectItems.restype = ctypes.c_int
SHOpenFolderAndSelectItems.argtypes = [
    ctypes.c_void_p,  # pidlFolder : ITEMIDLIST*
    wintypes.DWORD,  # cidl : DWORD
    ctypes.c_void_p,  # apidl : ITEMIDLIST** optional
    wintypes.DWORD,  # dwFlags : DWORD
]

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('SHELL32.dll')
SHOpenFolderAndSelectItems = Fiddle::Function.new(
  lib['SHOpenFolderAndSelectItems'],
  [
    Fiddle::TYPE_VOIDP,  # pidlFolder : ITEMIDLIST*
    -Fiddle::TYPE_INT,  # cidl : DWORD
    Fiddle::TYPE_VOIDP,  # apidl : ITEMIDLIST** optional
    -Fiddle::TYPE_INT,  # dwFlags : DWORD
  ],
  Fiddle::TYPE_INT)

#[link(name = "shell32")]
extern "system" {
    fn SHOpenFolderAndSelectItems(
        pidlFolder: *mut ITEMIDLIST,  // ITEMIDLIST*
        cidl: u32,  // DWORD
        apidl: *mut *mut ITEMIDLIST,  // ITEMIDLIST** optional
        dwFlags: u32  // DWORD
    ) -> i32;
}
// crates: windows-sys provides ready-made bindings for this API.

$sig = @"
[DllImport("SHELL32.dll")]
public static extern int SHOpenFolderAndSelectItems(IntPtr pidlFolder, uint cidl, IntPtr apidl, uint dwFlags);
"@
$api = Add-Type -MemberDefinition $sig -Name 'SHELL32_SHOpenFolderAndSelectItems' -Namespace Win32 -PassThru
# $api::SHOpenFolderAndSelectItems(pidlFolder, cidl, apidl, dwFlags)

#uselib "SHELL32.dll"
#func global SHOpenFolderAndSelectItems "SHOpenFolderAndSelectItems" sptr, sptr, sptr, sptr
; SHOpenFolderAndSelectItems varptr(pidlFolder), cidl, varptr(apidl), dwFlags   ; 戻り値は stat
; pidlFolder : ITEMIDLIST* -> "sptr"
; cidl : DWORD -> "sptr"
; apidl : ITEMIDLIST** optional -> "sptr"
; dwFlags : DWORD -> "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 SHOpenFolderAndSelectItems "SHOpenFolderAndSelectItems" var, int, var, int
; res = SHOpenFolderAndSelectItems(pidlFolder, cidl, apidl, dwFlags)
; pidlFolder : ITEMIDLIST* -> "var"
; cidl : DWORD -> "int"
; apidl : ITEMIDLIST** optional -> "var"
; dwFlags : DWORD -> "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。

; HRESULT SHOpenFolderAndSelectItems(ITEMIDLIST* pidlFolder, DWORD cidl, ITEMIDLIST** apidl, DWORD dwFlags)
#uselib "SHELL32.dll"
#cfunc global SHOpenFolderAndSelectItems "SHOpenFolderAndSelectItems" var, int, var, int
; res = SHOpenFolderAndSelectItems(pidlFolder, cidl, apidl, dwFlags)
; pidlFolder : ITEMIDLIST* -> "var"
; cidl : DWORD -> "int"
; apidl : ITEMIDLIST** optional -> "var"
; dwFlags : DWORD -> "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")
	procSHOpenFolderAndSelectItems = shell32.NewProc("SHOpenFolderAndSelectItems")
)

// pidlFolder (ITEMIDLIST*), cidl (DWORD), apidl (ITEMIDLIST** optional), dwFlags (DWORD)
r1, _, err := procSHOpenFolderAndSelectItems.Call(
	uintptr(pidlFolder),
	uintptr(cidl),
	uintptr(apidl),
	uintptr(dwFlags),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // HRESULT

function SHOpenFolderAndSelectItems(
  pidlFolder: Pointer;   // ITEMIDLIST*
  cidl: DWORD;   // DWORD
  apidl: Pointer;   // ITEMIDLIST** optional
  dwFlags: DWORD   // DWORD
): Integer; stdcall;
  external 'SHELL32.dll' name 'SHOpenFolderAndSelectItems';

result := DllCall("SHELL32\SHOpenFolderAndSelectItems"
    , "Ptr", pidlFolder   ; ITEMIDLIST*
    , "UInt", cidl   ; DWORD
    , "Ptr", apidl   ; ITEMIDLIST** optional
    , "UInt", dwFlags   ; DWORD
    , "Int")   ; return: HRESULT

●SHOpenFolderAndSelectItems(pidlFolder, cidl, apidl, dwFlags) = DLL("SHELL32.dll", "int SHOpenFolderAndSelectItems(void*, dword, void*, dword)")
# 呼び出し: SHOpenFolderAndSelectItems(pidlFolder, cidl, apidl, dwFlags)
# pidlFolder : ITEMIDLIST* -> "void*"
# cidl : DWORD -> "dword"
# apidl : ITEMIDLIST** optional -> "void*"
# dwFlags : DWORD -> "dword"
# 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)。