如何获得给定PIDL的IWMDMStorageControl接口 [英] How to get IWMDMStorageControl interface for given PIDL

问题描述

我使用SHBrowseForFolder（）在MTP设备上选择一个文件夹。然后我想从/到那里复制文件。 IWMDMStorageControl接口（从Windows Media Format 11 SDK）似乎是合适的，但是如何获得它的对象与PIDL，从SHBrowseForFolder（）？返回。

I use SHBrowseForFolder() to select a folder on MTP device. Then I want to copy file from/to there. IWMDMStorageControl interface (from Windows Media Format 11 SDK) seems suitable, but how to get it for the object with PIDL, returned from SHBrowseForFolder()?

关于获取IWMDMStorageControl接口：如何为给定PIDL获取IPortableDeviceContent接口）

(I asked similar question about obtaining IWMDMStorageControl interface: How to get IPortableDeviceContent interface for given PIDL)

推荐答案

我们可以通过这种方式从SHBrowseForFolder（）获取与PILD关联的显示名称：

We can get the displayed name, associated with the PILD from SHBrowseForFolder() in this way:

TCHAR DisplayName[MAX_PATH]; // we will get it here
LPITEMIDLIST pidlSelected = SHBrowseForFolder( &bi );
if ( pidlSelected && ! SHGetPathFromIDList(pidlSelected, DisplayName) )
{ // it is media device
    IShellFolder *psfParent;
    LPCITEMIDLIST pidlRelative;
    STRRET str;
    HRESULT hres = SHBindToParent(pidlSelected, IID_IShellFolder, (void**)&psfParent, &pidlRelative);
    if (SUCCEEDED(hres))
    {
        psfParent->GetDisplayNameOf( pidlRelative, SHGDN_FORADDRESSBAR, &str );
        psfParent->Release();
        StrRetToBuf( &str, pidlSelected, DisplayName, sizeof(DisplayName)/sizeof(DisplayName[0]) );
    }
}

然后我们可以解析路径并遍历MTP文件结构由相同的路径。这不是优雅的解决方案，但它是我发现的唯一的。

Then we can parse the path and traverse through MTP file structure by the same path. It is not elegant solution, but it is the only one which I found.

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