SHGetViewStatePropertyBag

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

HRESULT SHGetViewStatePropertyBag(
    ITEMIDLIST* pidl,   // optional
    LPCWSTR pszBagName,   // optional
    DWORD dwFlags,
    const GUID* riid,
    void** ppv
);

<DllImport("SHLWAPI.dll", ExactSpelling:=True)>
Public Shared Function SHGetViewStatePropertyBag(
    pidl As IntPtr,   ' ITEMIDLIST* optional
    <MarshalAs(UnmanagedType.LPWStr)> pszBagName As String,   ' LPCWSTR optional
    dwFlags As UInteger,   ' DWORD
    ByRef riid As Guid,   ' GUID*
    ppv As IntPtr   ' void** out
) As Integer
End Function

' pidl : ITEMIDLIST* optional
' pszBagName : LPCWSTR optional
' dwFlags : DWORD
' riid : GUID*
' ppv : void** out
Declare PtrSafe Function SHGetViewStatePropertyBag Lib "shlwapi" ( _
    ByVal pidl As LongPtr, _
    ByVal pszBagName As LongPtr, _
    ByVal dwFlags As Long, _
    ByVal riid As LongPtr, _
    ByVal ppv 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

SHGetViewStatePropertyBag = ctypes.windll.shlwapi.SHGetViewStatePropertyBag
SHGetViewStatePropertyBag.restype = ctypes.c_int
SHGetViewStatePropertyBag.argtypes = [
    ctypes.c_void_p,  # pidl : ITEMIDLIST* optional
    wintypes.LPCWSTR,  # pszBagName : LPCWSTR optional
    wintypes.DWORD,  # dwFlags : DWORD
    ctypes.c_void_p,  # riid : GUID*
    ctypes.c_void_p,  # ppv : void** out
]

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('SHLWAPI.dll')
SHGetViewStatePropertyBag = Fiddle::Function.new(
  lib['SHGetViewStatePropertyBag'],
  [
    Fiddle::TYPE_VOIDP,  # pidl : ITEMIDLIST* optional
    Fiddle::TYPE_VOIDP,  # pszBagName : LPCWSTR optional
    -Fiddle::TYPE_INT,  # dwFlags : DWORD
    Fiddle::TYPE_VOIDP,  # riid : GUID*
    Fiddle::TYPE_VOIDP,  # ppv : void** out
  ],
  Fiddle::TYPE_INT)

#[link(name = "shlwapi")]
extern "system" {
    fn SHGetViewStatePropertyBag(
        pidl: *mut ITEMIDLIST,  // ITEMIDLIST* optional
        pszBagName: *const u16,  // LPCWSTR optional
        dwFlags: u32,  // DWORD
        riid: *const GUID,  // GUID*
        ppv: *mut *mut ()  // void** out
    ) -> i32;
}
// crates: windows-sys provides ready-made bindings for this API.

$sig = @"
[DllImport("SHLWAPI.dll")]
public static extern int SHGetViewStatePropertyBag(IntPtr pidl, [MarshalAs(UnmanagedType.LPWStr)] string pszBagName, uint dwFlags, ref Guid riid, IntPtr ppv);
"@
$api = Add-Type -MemberDefinition $sig -Name 'SHLWAPI_SHGetViewStatePropertyBag' -Namespace Win32 -PassThru
# $api::SHGetViewStatePropertyBag(pidl, pszBagName, dwFlags, riid, ppv)

#uselib "SHLWAPI.dll"
#func global SHGetViewStatePropertyBag "SHGetViewStatePropertyBag" sptr, sptr, sptr, sptr, sptr
; SHGetViewStatePropertyBag varptr(pidl), pszBagName, dwFlags, varptr(riid), ppv   ; 戻り値は stat
; pidl : ITEMIDLIST* optional -> "sptr"
; pszBagName : LPCWSTR optional -> "sptr"
; dwFlags : DWORD -> "sptr"
; riid : GUID* -> "sptr"
; ppv : void** 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。

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

var (
	shlwapi = windows.NewLazySystemDLL("SHLWAPI.dll")
	procSHGetViewStatePropertyBag = shlwapi.NewProc("SHGetViewStatePropertyBag")
)

// pidl (ITEMIDLIST* optional), pszBagName (LPCWSTR optional), dwFlags (DWORD), riid (GUID*), ppv (void** out)
r1, _, err := procSHGetViewStatePropertyBag.Call(
	uintptr(pidl),
	uintptr(unsafe.Pointer(windows.StringToUTF16Ptr(pszBagName))),
	uintptr(dwFlags),
	uintptr(riid),
	uintptr(ppv),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // HRESULT

function SHGetViewStatePropertyBag(
  pidl: Pointer;   // ITEMIDLIST* optional
  pszBagName: PWideChar;   // LPCWSTR optional
  dwFlags: DWORD;   // DWORD
  riid: PGUID;   // GUID*
  ppv: Pointer   // void** out
): Integer; stdcall;
  external 'SHLWAPI.dll' name 'SHGetViewStatePropertyBag';

result := DllCall("SHLWAPI\SHGetViewStatePropertyBag"
    , "Ptr", pidl   ; ITEMIDLIST* optional
    , "WStr", pszBagName   ; LPCWSTR optional
    , "UInt", dwFlags   ; DWORD
    , "Ptr", riid   ; GUID*
    , "Ptr", ppv   ; void** out
    , "Int")   ; return: HRESULT

●SHGetViewStatePropertyBag(pidl, pszBagName, dwFlags, riid, ppv) = DLL("SHLWAPI.dll", "int SHGetViewStatePropertyBag(void*, char*, dword, void*, void*)")
# 呼び出し: SHGetViewStatePropertyBag(pidl, pszBagName, dwFlags, riid, ppv)
# pidl : ITEMIDLIST* optional -> "void*"
# pszBagName : LPCWSTR optional -> "char*"
# dwFlags : DWORD -> "dword"
# riid : GUID* -> "void*"
# ppv : void** 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)。

const std = @import("std");

extern "shlwapi" fn SHGetViewStatePropertyBag(
    pidl: [*c]ITEMIDLIST, // ITEMIDLIST* optional
    pszBagName: [*c]const u16, // LPCWSTR optional
    dwFlags: u32, // DWORD
    riid: [*c]GUID, // GUID*
    ppv: ?*anyopaque // void** out
) callconv(std.os.windows.WINAPI) i32;

proc SHGetViewStatePropertyBag(
    pidl: ptr ITEMIDLIST,  # ITEMIDLIST* optional
    pszBagName: WideCString,  # LPCWSTR optional
    dwFlags: uint32,  # DWORD
    riid: ptr GUID,  # GUID*
    ppv: pointer  # void** out
): int32 {.importc: "SHGetViewStatePropertyBag", stdcall, dynlib: "SHLWAPI.dll".}

pragma(lib, "shlwapi");
extern(Windows)
int SHGetViewStatePropertyBag(
    ITEMIDLIST* pidl,   // ITEMIDLIST* optional
    const(wchar)* pszBagName,   // LPCWSTR optional
    uint dwFlags,   // DWORD
    GUID* riid,   // GUID*
    void** ppv   // void** out
);

ccall((:SHGetViewStatePropertyBag, "SHLWAPI.dll"), stdcall, Int32,
      (Ptr{ITEMIDLIST}, Cwstring, UInt32, Ptr{GUID}, Ptr{Cvoid}),
      pidl, pszBagName, dwFlags, riid, ppv)
# pidl : ITEMIDLIST* optional -> Ptr{ITEMIDLIST}
# pszBagName : LPCWSTR optional -> Cwstring
# dwFlags : DWORD -> UInt32
# riid : GUID* -> Ptr{GUID}
# ppv : void** out -> Ptr{Cvoid}
# stdcall は 32bit のみ意味を持つ(x64 では無視)。

local ffi = require("ffi")
ffi.cdef[[
int32_t SHGetViewStatePropertyBag(
    void* pidl,
    const uint16_t* pszBagName,
    uint32_t dwFlags,
    void* riid,
    void** ppv);
]]
local shlwapi = ffi.load("shlwapi")
-- shlwapi.SHGetViewStatePropertyBag(pidl, pszBagName, dwFlags, riid, ppv)
-- pidl : ITEMIDLIST* optional
-- pszBagName : LPCWSTR optional
-- dwFlags : DWORD
-- riid : GUID*
-- ppv : void** out
-- 構造体/GUIDへのポインタは cdef が通るよう void* で表記(実型は各引数コメント参照)。値渡し構造体・enum は対応する typedef を cdef に追加すること。

const koffi = require('koffi');
const lib = koffi.load('SHLWAPI.dll');
const SHGetViewStatePropertyBag = lib.func('__stdcall', 'SHGetViewStatePropertyBag', 'int32_t', ['void *', 'str16', 'uint32_t', 'void *', 'void *']);
// SHGetViewStatePropertyBag(pidl, pszBagName, dwFlags, riid, ppv)
// pidl : ITEMIDLIST* optional -> 'void *'
// pszBagName : LPCWSTR optional -> 'str16'
// dwFlags : DWORD -> 'uint32_t'
// riid : GUID* -> 'void *'
// ppv : void** out -> 'void *'
// 出力ポインタは koffi.out(...) で包む。構造体は koffi.struct で定義。

const lib = Deno.dlopen("SHLWAPI.dll", {
  SHGetViewStatePropertyBag: { parameters: ["pointer", "buffer", "u32", "pointer", "pointer"], result: "i32" },
});
// lib.symbols.SHGetViewStatePropertyBag(pidl, pszBagName, dwFlags, riid, ppv)
// pidl : ITEMIDLIST* optional -> "pointer"
// pszBagName : LPCWSTR optional -> "buffer"
// dwFlags : DWORD -> "u32"
// riid : GUID* -> "pointer"
// ppv : void** out -> "pointer"
// 文字列引数は "buffer"(NUL 終端のバイト列を Uint8Array で渡す)。
// 値渡し構造体は { struct: [ ...field types... ] } を使用。

<?php
$ffi = FFI::cdef(<<<C
int32_t SHGetViewStatePropertyBag(
    void* pidl,
    const uint16_t* pszBagName,
    uint32_t dwFlags,
    void* riid,
    void** ppv);
C, "SHLWAPI.dll");
// $ffi->SHGetViewStatePropertyBag(pidl, pszBagName, dwFlags, riid, ppv);
// pidl : ITEMIDLIST* optional
// pszBagName : LPCWSTR optional
// dwFlags : DWORD
// riid : GUID*
// ppv : void** out
// 構造体/GUIDへのポインタは cdef が通るよう void* で表記(実型は各引数コメント参照)。値渡し構造体・enum は対応する typedef を cdef に追加すること。
// WINAPI(stdcall): x64 では呼出規約が統一されるため問題なし。x86 では __stdcall 対応のラッパが必要な場合あり。

import com.sun.jna.*;
import com.sun.jna.ptr.*;
import com.sun.jna.win32.StdCallLibrary;
import com.sun.jna.win32.W32APIOptions;

public interface Shlwapi extends StdCallLibrary {
    Shlwapi INSTANCE = Native.load("shlwapi", Shlwapi.class);
    int SHGetViewStatePropertyBag(
        Pointer pidl,   // ITEMIDLIST* optional
        WString pszBagName,   // LPCWSTR optional
        int dwFlags,   // DWORD
        Pointer riid,   // GUID*
        Pointer ppv   // void** out
    );
}

@[Link("shlwapi")]
lib LibSHLWAPI
  fun SHGetViewStatePropertyBag = SHGetViewStatePropertyBag(
    pidl : ITEMIDLIST*,   # ITEMIDLIST* optional
    pszBagName : UInt16*,   # LPCWSTR optional
    dwFlags : UInt32,   # DWORD
    riid : GUID*,   # GUID*
    ppv : Void**   # void** out
  ) : Int32
end
# 構造体/GUID/enum は lib 内に対応する型定義が必要。
# 呼出規約: x64 は規約統一のため OK。x86(32bit)は WINAPI=stdcall だが Crystal の fun に stdcall 付与構文がなく非対応。

import 'dart:ffi';
import 'package:ffi/ffi.dart';

typedef SHGetViewStatePropertyBagNative = Int32 Function(Pointer<Void>, Pointer<Utf16>, Uint32, Pointer<Void>, Pointer<Void>);
typedef SHGetViewStatePropertyBagDart = int Function(Pointer<Void>, Pointer<Utf16>, int, Pointer<Void>, Pointer<Void>);
final SHGetViewStatePropertyBag = DynamicLibrary.open('SHLWAPI.dll')
    .lookupFunction<SHGetViewStatePropertyBagNative, SHGetViewStatePropertyBagDart>('SHGetViewStatePropertyBag');
// pidl : ITEMIDLIST* optional -> Pointer<Void>
// pszBagName : LPCWSTR optional -> Pointer<Utf16>
// dwFlags : DWORD -> Uint32
// riid : GUID* -> Pointer<Void>
// ppv : void** out -> Pointer<Void>
// 文字列は package:ffi の "...".toNativeUtf16()/toNativeUtf8() で変換。

{$mode objfpc}{$H+}
function SHGetViewStatePropertyBag(
  pidl: Pointer;   // ITEMIDLIST* optional
  pszBagName: PWideChar;   // LPCWSTR optional
  dwFlags: DWORD;   // DWORD
  riid: PGUID;   // GUID*
  ppv: Pointer   // void** out
): Integer; stdcall;
  external 'SHLWAPI.dll' name 'SHGetViewStatePropertyBag';

import Foreign
import Foreign.C.Types
import Foreign.C.String

foreign import stdcall safe "SHGetViewStatePropertyBag"
  c_SHGetViewStatePropertyBag :: Ptr () -> CWString -> Word32 -> Ptr () -> Ptr () -> IO Int32
-- pidl : ITEMIDLIST* optional -> Ptr ()
-- pszBagName : LPCWSTR optional -> CWString
-- dwFlags : DWORD -> Word32
-- riid : GUID* -> Ptr ()
-- ppv : void** out -> Ptr ()
-- 要 GHC(Windows)。stdcall は x64 では ccall として扱われる。ブロックする API は safe 呼び出し推奨。

open Ctypes
open Foreign

let shgetviewstatepropertybag =
  foreign "SHGetViewStatePropertyBag"
    ((ptr void) @-> (ptr uint16_t) @-> uint32_t @-> (ptr void) @-> (ptr void) @-> returning int32_t)
(* pidl : ITEMIDLIST* optional -> (ptr void) *)
(* pszBagName : LPCWSTR optional -> (ptr uint16_t) *)
(* dwFlags : DWORD -> uint32_t *)
(* riid : GUID* -> (ptr void) *)
(* ppv : void** out -> (ptr void) *)
(* foreign は cdecl 前提。x64 Windows では WINAPI と一致。構造体は ctypes structure を定義のこと。 *)

(cffi:define-foreign-library shlwapi (t "SHLWAPI.dll"))
(cffi:use-foreign-library shlwapi)

(cffi:defcfun ("SHGetViewStatePropertyBag" shget-view-state-property-bag :convention :stdcall) :int32
  (pidl :pointer)   ; ITEMIDLIST* optional
  (psz-bag-name (:string :encoding :utf-16le))   ; LPCWSTR optional
  (dw-flags :uint32)   ; DWORD
  (riid :pointer)   ; GUID*
  (ppv :pointer))   ; void** out
; isize/usize(INT_PTR/SIZE_T)は x64 前提で :int64/:uint64。x86 では :int32/:uint32。

use Win32::API;
my $SHGetViewStatePropertyBag = Win32::API::More->new('SHLWAPI',
    'int SHGetViewStatePropertyBag(LPVOID pidl, LPCWSTR pszBagName, DWORD dwFlags, LPVOID riid, LPVOID ppv)');
# my $ret = $SHGetViewStatePropertyBag->Call($pidl, $pszBagName, $dwFlags, $riid, $ppv);
# pidl : ITEMIDLIST* optional -> LPVOID
# pszBagName : LPCWSTR optional -> LPCWSTR
# dwFlags : DWORD -> DWORD
# riid : GUID* -> LPVOID
# ppv : void** out -> LPVOID
# 値渡し構造体は pack() した文字列、または Win32::API::Struct を使用。