C++20&WIL ごみ箱内の項目の「元の場所」「削除された日時」を取得する

C++20とWILでごみ箱内の項目の「元の場所」と「削除された日時」を取得するサンプルコードです。実行すると表示名とそれらを出力します。

#include <format>
#include <functional>
#include <iostream>

#define STRICT
#define NOMINMAX
#include <Windows.h>
#include <ShlObj.h>
#pragma comment(lib, "propsys.lib")

// Microsoft WIL 1.0.220201.1
#include "wil/com.h"

void ForEachItems(IShellItem* pparent, std::function<void(IShellItem*)> fn)
{
    wil::com_ptr<IEnumShellItems> pitems;
    THROW_IF_FAILED(pparent->BindToHandler(
        nullptr, BHID_EnumItems, IID_PPV_ARGS(pitems.put())));

    wil::com_ptr<IShellItem> pitem;
    HRESULT hr;
    while ((hr = items->Next(1, item.put(), nullptr)) != S_FALSE)
    {
        THROW_IF_FAILED(hr);
        fn(item.get());
    }
}

inline PROPERTYKEY PSGetPropertyKeyFromName(PCWSTR propName)
{
    PROPERTYKEY pkey;
    THROW_IF_FAILED(PSGetPropertyKeyFromName(propName, &pkey));
    return pkey;
}

int main()
{
    std::wcout.imbue(std::locale("", std::locale::ctype));

    auto coinit{ wil::CoInitializeEx(COINIT_APARTMENTTHREADED) };

    wil::com_ptr<IShellItem> recycleBin;
    THROW_IF_FAILED(SHGetKnownFolderItem(
        FOLDERID_RecycleBinFolder, KF_FLAG_DEFAULT, nullptr, IID_PPV_ARGS(recycleBin.put())));

    const auto pkeyDateDeleted{ PSGetPropertyKeyFromName(L"System.Recycle.DateDeleted") };
    const auto pkeyDeletedFrom{ PSGetPropertyKeyFromName(L"System.Recycle.DeletedFrom") };

    std::wcout << L"名前, 元の場所, 削除された日時" << std::endl;
    ForEachItems(recycleBin.get(), [&pkeyDateDeleted, &pkeyDeletedFrom](IShellItem* pitem)
        {
            auto pitem2{ wil::com_query<IShellItem2>(pitem) };

            wil::unique_cotaskmem_string displayName;
            pitem->GetDisplayName(SIGDN_NORMALDISPLAY, displayName.put());

            // 元の場所
            wil::unique_cotaskmem_string deletedFrom;
            pitem2->GetString(pkeyDeletedFrom, deletedFrom.put());

            // 削除された日時
            FILETIME ftDateDeleted;
            std::wstring dateDeletedStr;
            if (SUCCEEDED(pitem2->GetFileTime(pkeyDateDeleted, &ftDateDeleted)))
            {
                SYSTEMTIME dateDeleted;
                FileTimeToLocalFileTime(&ftDateDeleted, &ftDateDeleted);
                FileTimeToSystemTime(&ftDateDeleted, &dateDeleted);
                dateDeletedStr = std::format(L"{}/{}/{} {}:{}:{}",
                    dateDeleted.wYear, dateDeleted.wMonth, dateDeleted.wDay,
                    dateDeleted.wHour, dateDeleted.wMinute, dateDeleted.wSecond);
            }
            std::wcout
                << std::format(L"{}, {}, {}",
                    displayName.get(), deletedFrom.get(), dateDeletedStr)
                << std::endl;
        });

    return 0;
}