SHGetPathFromIDListA

// SHELL32.dll  (ANSI / -A)
#include <windows.h>

BOOL SHGetPathFromIDListA(
    ITEMIDLIST* pidl,
    LPSTR pszPath
);

<DllImport("SHELL32.dll", CharSet:=CharSet.Ansi, ExactSpelling:=True)>
Public Shared Function SHGetPathFromIDListA(
    pidl As IntPtr,   ' ITEMIDLIST*
    <MarshalAs(UnmanagedType.LPStr)> pszPath As System.Text.StringBuilder   ' LPSTR out
) As Boolean
End Function

' pidl : ITEMIDLIST*
' pszPath : LPSTR out
Declare PtrSafe Function SHGetPathFromIDListA Lib "shell32" ( _
    ByVal pidl As LongPtr, _
    ByVal pszPath As String) As Long
' VBA7前提(PtrSafe)。32bit Office では LongPtr→Long。Integer=16bit / Long=32bit / LongLong=64bit。

import ctypes
from ctypes import wintypes

SHGetPathFromIDListA = ctypes.windll.shell32.SHGetPathFromIDListA
SHGetPathFromIDListA.restype = wintypes.BOOL
SHGetPathFromIDListA.argtypes = [
    ctypes.c_void_p,  # pidl : ITEMIDLIST*
    wintypes.LPSTR,  # pszPath : LPSTR out
]

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('SHELL32.dll')
SHGetPathFromIDListA = Fiddle::Function.new(
  lib['SHGetPathFromIDListA'],
  [
    Fiddle::TYPE_VOIDP,  # pidl : ITEMIDLIST*
    Fiddle::TYPE_VOIDP,  # pszPath : LPSTR out
  ],
  Fiddle::TYPE_INT)

#[link(name = "shell32")]
extern "system" {
    fn SHGetPathFromIDListA(
        pidl: *mut ITEMIDLIST,  // ITEMIDLIST*
        pszPath: *mut u8  // LPSTR out
    ) -> i32;
}
// crates: windows-sys provides ready-made bindings for this API.

$sig = @"
[return: MarshalAs(UnmanagedType.Bool)]
[DllImport("SHELL32.dll", CharSet = CharSet.Ansi)]
public static extern bool SHGetPathFromIDListA(IntPtr pidl, [MarshalAs(UnmanagedType.LPStr)] System.Text.StringBuilder pszPath);
"@
$api = Add-Type -MemberDefinition $sig -Name 'SHELL32_SHGetPathFromIDListA' -Namespace Win32 -PassThru
# $api::SHGetPathFromIDListA(pidl, pszPath)

#uselib "SHELL32.dll"
#func global SHGetPathFromIDListA "SHGetPathFromIDListA" sptr, sptr
; SHGetPathFromIDListA varptr(pidl), varptr(pszPath)   ; 戻り値は stat
; pidl : ITEMIDLIST* -> "sptr"
; pszPath : LPSTR 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 SHGetPathFromIDListA "SHGetPathFromIDListA" var, var
; res = SHGetPathFromIDListA(pidl, pszPath)
; pidl : ITEMIDLIST* -> "var"
; pszPath : LPSTR 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。

; BOOL SHGetPathFromIDListA(ITEMIDLIST* pidl, LPSTR pszPath)
#uselib "SHELL32.dll"
#cfunc global SHGetPathFromIDListA "SHGetPathFromIDListA" var, var
; res = SHGetPathFromIDListA(pidl, pszPath)
; pidl : ITEMIDLIST* -> "var"
; pszPath : LPSTR 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")
	procSHGetPathFromIDListA = shell32.NewProc("SHGetPathFromIDListA")
)

// pidl (ITEMIDLIST*), pszPath (LPSTR out)
r1, _, err := procSHGetPathFromIDListA.Call(
	uintptr(pidl),
	uintptr(pszPath),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // BOOL

function SHGetPathFromIDListA(
  pidl: Pointer;   // ITEMIDLIST*
  pszPath: PAnsiChar   // LPSTR out
): BOOL; stdcall;
  external 'SHELL32.dll' name 'SHGetPathFromIDListA';

result := DllCall("SHELL32\SHGetPathFromIDListA"
    , "Ptr", pidl   ; ITEMIDLIST*
    , "Ptr", pszPath   ; LPSTR out
    , "Int")   ; return: BOOL

●SHGetPathFromIDListA(pidl, pszPath) = DLL("SHELL32.dll", "bool SHGetPathFromIDListA(void*, char*)")
# 呼び出し: SHGetPathFromIDListA(pidl, pszPath)
# pidl : ITEMIDLIST* -> "void*"
# pszPath : LPSTR out -> "char*"
# 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)。