SHGetNameFromIDList

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

HRESULT SHGetNameFromIDList(
    ITEMIDLIST* pidl,
    SIGDN sigdnName,
    LPWSTR* ppszName
);

<DllImport("SHELL32.dll", ExactSpelling:=True)>
Public Shared Function SHGetNameFromIDList(
    pidl As IntPtr,   ' ITEMIDLIST*
    sigdnName As Integer,   ' SIGDN
    ppszName As IntPtr   ' LPWSTR* out
) As Integer
End Function

' pidl : ITEMIDLIST*
' sigdnName : SIGDN
' ppszName : LPWSTR* out
Declare PtrSafe Function SHGetNameFromIDList Lib "shell32" ( _
    ByVal pidl As LongPtr, _
    ByVal sigdnName As Long, _
    ByVal ppszName 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

SHGetNameFromIDList = ctypes.windll.shell32.SHGetNameFromIDList
SHGetNameFromIDList.restype = ctypes.c_int
SHGetNameFromIDList.argtypes = [
    ctypes.c_void_p,  # pidl : ITEMIDLIST*
    ctypes.c_int,  # sigdnName : SIGDN
    ctypes.c_void_p,  # ppszName : LPWSTR* out
]

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('SHELL32.dll')
SHGetNameFromIDList = Fiddle::Function.new(
  lib['SHGetNameFromIDList'],
  [
    Fiddle::TYPE_VOIDP,  # pidl : ITEMIDLIST*
    Fiddle::TYPE_INT,  # sigdnName : SIGDN
    Fiddle::TYPE_VOIDP,  # ppszName : LPWSTR* out
  ],
  Fiddle::TYPE_INT)

#[link(name = "shell32")]
extern "system" {
    fn SHGetNameFromIDList(
        pidl: *mut ITEMIDLIST,  // ITEMIDLIST*
        sigdnName: i32,  // SIGDN
        ppszName: *mut *mut u16  // LPWSTR* out
    ) -> i32;
}
// crates: windows-sys provides ready-made bindings for this API.

$sig = @"
[DllImport("SHELL32.dll")]
public static extern int SHGetNameFromIDList(IntPtr pidl, int sigdnName, IntPtr ppszName);
"@
$api = Add-Type -MemberDefinition $sig -Name 'SHELL32_SHGetNameFromIDList' -Namespace Win32 -PassThru
# $api::SHGetNameFromIDList(pidl, sigdnName, ppszName)

#uselib "SHELL32.dll"
#func global SHGetNameFromIDList "SHGetNameFromIDList" sptr, sptr, sptr
; SHGetNameFromIDList varptr(pidl), sigdnName, varptr(ppszName)   ; 戻り値は stat
; pidl : ITEMIDLIST* -> "sptr"
; sigdnName : SIGDN -> "sptr"
; ppszName : LPWSTR* 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 "SHELL32.dll"
#cfunc global SHGetNameFromIDList "SHGetNameFromIDList" var, int, var
; res = SHGetNameFromIDList(pidl, sigdnName, ppszName)
; pidl : ITEMIDLIST* -> "var"
; sigdnName : SIGDN -> "int"
; ppszName : LPWSTR* 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 SHGetNameFromIDList(ITEMIDLIST* pidl, SIGDN sigdnName, LPWSTR* ppszName)
#uselib "SHELL32.dll"
#cfunc global SHGetNameFromIDList "SHGetNameFromIDList" var, int, var
; res = SHGetNameFromIDList(pidl, sigdnName, ppszName)
; pidl : ITEMIDLIST* -> "var"
; sigdnName : SIGDN -> "int"
; ppszName : LPWSTR* 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 (
	shell32 = windows.NewLazySystemDLL("SHELL32.dll")
	procSHGetNameFromIDList = shell32.NewProc("SHGetNameFromIDList")
)

// pidl (ITEMIDLIST*), sigdnName (SIGDN), ppszName (LPWSTR* out)
r1, _, err := procSHGetNameFromIDList.Call(
	uintptr(pidl),
	uintptr(sigdnName),
	uintptr(ppszName),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // HRESULT

function SHGetNameFromIDList(
  pidl: Pointer;   // ITEMIDLIST*
  sigdnName: Integer;   // SIGDN
  ppszName: PPWideChar   // LPWSTR* out
): Integer; stdcall;
  external 'SHELL32.dll' name 'SHGetNameFromIDList';

result := DllCall("SHELL32\SHGetNameFromIDList"
    , "Ptr", pidl   ; ITEMIDLIST*
    , "Int", sigdnName   ; SIGDN
    , "Ptr", ppszName   ; LPWSTR* out
    , "Int")   ; return: HRESULT

●SHGetNameFromIDList(pidl, sigdnName, ppszName) = DLL("SHELL32.dll", "int SHGetNameFromIDList(void*, int, void*)")
# 呼び出し: SHGetNameFromIDList(pidl, sigdnName, ppszName)
# pidl : ITEMIDLIST* -> "void*"
# sigdnName : SIGDN -> "int"
# ppszName : LPWSTR* 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)。