什么是“Shell 命名空间”？新建文件夹的方法？

发布于 2024-08-11 23:27:55 字数 2030 浏览 4 评论 0原文

显然，这对于 win32 api - CreateDirectory() 来说是微不足道的。但我正在尝试托管一个 IShellView，并且希望以最面向 shell 的方式来做到这一点。我本以为 IShellFolder 中会有一个 createobject 或 createfolder 或类似的东西。但 IShellView 和 IShellFolder 甚至 IFolderView 似乎都没有类似的东西。

有没有一种 shell 编程方式来创建新文件夹？或者我是否需要使用路径名（老式的方式）创建一个文件夹？

如果我必须通过 CreateDirectory() 来完成此操作，那么我的下一个问题可能是：关于如何让 IShellView / IFolderView 实际看到这个新对象并将其显示给用户的任何想法？

动机：创建我自己的文件对话框替代品，我想提供标准 XP 样式文件对话框的“新文件夹”工具栏图标功能。

编辑：我继续使用 CreateDirectory 创建了一些基本上可以工作的东西。但是，我仍然希望有更好的方法来做到这一点，但这样您就可以看到它是如何工作的，并提供更好的想法来更好地解决这个问题：

    PidlUtils::Pidl pidl(m_folder);
    CFilename folderName(GetDisplayNameOf(pidl), "New Folder");
    for (int i = 2; folderName.Exists(); ++i)
        folderName.SetFullName(FString("New Folder (%d)", i));
    if (!CPathname::Create(folderName, false))
        throw CContextException("Unable to create a new folder here: ");

    // get the PIDL for the newly created folder
    PidlUtils::Pidl pidlNew;
#ifdef UNICODE
    const wchar_t * wszName = folderName.c_str();
#else
    wchar_t wszName[MAX_PATH];
    MultiByteToWideChar(CP_ACP, 0, folderName.GetFullName(), -1, wszName, MAX_PATH);
#endif
    m_hresult = m_folder->ParseDisplayName(NULL, NULL, wszName, NULL, pidlNew, NULL);
    if (FAILED(m_hresult))
        throw CLabeledException(FString("Unable to get the PIDL for the new folder: 0x%X", m_hresult));

    // upgrade our interface so we can select & rename it
    CComQIPtr<IShellView2> sv2(m_shell_view);
    if (!sv2)
        throw CLabeledException("Unable to obtain the IShellView2 we need to rename the newly created folder.");

    // force it to see thew new folder
    sv2->Refresh();

    // select the new folder, and begin the rename process
    m_hresult = sv2->SelectAndPositionItem(pidlNew, SVSI_EDIT|SVSI_DESELECTOTHERS|SVSI_ENSUREVISIBLE|SVSI_POSITIONITEM, NULL);
    if (FAILED(m_hresult))
        throw CLabeledException(FString("Unable to select and position the new folder item: 0x%X", m_hresult));

原文

Obviously this is trivial to do with win32 api - CreateDirectory(). But I'm trying to host an IShellView, and would like to do this the most shell-oriented way. I would have thought that there would be a createobject or createfolder or some such from an IShellFolder. But neither IShellView nor IShellFolder nor even IFolderView seem to have anything quite like this.

Is there a Shell-programming way to create a new folder? Or do I need to create a folder using a pathname, the old-fashioned way?

If I have to do it via CreateDirectory(), then my next question might be: any ideas as to how to get the IShellView / IFolderView to actually see this new object and display it to the user?

Motivation: Creating my own File Dialog replacement and I want to provide the "new folder" toolbar icon functionality of the standard XP-style file dialog.

EDIT: I went ahead and created something that basically works, using CreateDirectory. However, I'm still hoping that there's a better way to do this, but so that you can see how that works, and to offer better ideas as to solve this issue better:

    PidlUtils::Pidl pidl(m_folder);
    CFilename folderName(GetDisplayNameOf(pidl), "New Folder");
    for (int i = 2; folderName.Exists(); ++i)
        folderName.SetFullName(FString("New Folder (%d)", i));
    if (!CPathname::Create(folderName, false))
        throw CContextException("Unable to create a new folder here: ");

    // get the PIDL for the newly created folder
    PidlUtils::Pidl pidlNew;
#ifdef UNICODE
    const wchar_t * wszName = folderName.c_str();
#else
    wchar_t wszName[MAX_PATH];
    MultiByteToWideChar(CP_ACP, 0, folderName.GetFullName(), -1, wszName, MAX_PATH);
#endif
    m_hresult = m_folder->ParseDisplayName(NULL, NULL, wszName, NULL, pidlNew, NULL);
    if (FAILED(m_hresult))
        throw CLabeledException(FString("Unable to get the PIDL for the new folder: 0x%X", m_hresult));

    // upgrade our interface so we can select & rename it
    CComQIPtr<IShellView2> sv2(m_shell_view);
    if (!sv2)
        throw CLabeledException("Unable to obtain the IShellView2 we need to rename the newly created folder.");

    // force it to see thew new folder
    sv2->Refresh();

    // select the new folder, and begin the rename process
    m_hresult = sv2->SelectAndPositionItem(pidlNew, SVSI_EDIT|SVSI_DESELECTOTHERS|SVSI_ENSUREVISIBLE|SVSI_POSITIONITEM, NULL);
    if (FAILED(m_hresult))
        throw CLabeledException(FString("Unable to select and position the new folder item: 0x%X", m_hresult));

分享到QQ

分享到微博

如果你对这篇内容有疑问，欢迎到本站社区发帖提问参与讨论，获取更多帮助，或者扫码二维码加入 Web 技术交流群。

发布评论

需要登录才能够评论，你可以免费注册一个本站的账号。

┊风居住的梦幻卍 2024-08-18 23:27:55

是的，您可以获取 IContextMenu 并查找子菜单，但是为什么要麻烦呢，只需调用 SHChangeNotify 调用 CreateDirectory 后

回复收藏 0 原文

沙沙粒小 2024-08-18 23:27:55

Shell 文件夹通常实现 IStorage 接口，因此这非常简单。例如，以下命令在桌面上创建一个名为“abcd”的文件夹：

  CComPtr<IShellFolder> pDesktop;
  HRESULT hr = SHGetDesktopFolder(&pDesktop);
  if (FAILED(hr)) return;
  CComQIPtr<IStorage> pStorage(pDesktop);
  if (!pStorage) return;
  CComPtr<IStorage> dummy;
  hr = pStorage->CreateStorage(L"abcd", STGM_FAILIFTHERE, 0, 0, &dummy);

Shell folders usually implement the IStorage interface, so this is pretty simple. For example, the following creates a folder named "abcd" on the desktop:

  CComPtr<IShellFolder> pDesktop;
  HRESULT hr = SHGetDesktopFolder(&pDesktop);
  if (FAILED(hr)) return;
  CComQIPtr<IStorage> pStorage(pDesktop);
  if (!pStorage) return;
  CComPtr<IStorage> dummy;
  hr = pStorage->CreateStorage(L"abcd", STGM_FAILIFTHERE, 0, 0, &dummy);

回复收藏 0 原文