[vbox-dev] Can't automount transient shared folders after logining in guest os ??

[今生]

Hi, guys
I have been trapped by the problem for some days. I wish you can help me.
I had posted the problem on the
fornumhttps://forums.virtualbox.org/viewtopic.php?f=2&t=49129&p=223404#p223404.
And I had reported it as a bug https://www.virtualbox.org/ticket/10465. But
there is no reply.

Any help will be appreciated.
guest os: windows xp
host os: windows 7
virtualbox version:both 4.1.8 and 4.0.16

According sdk document, I can creates transient new shared folders by
IConsole::createSharedFolder([in]wstring name,[in] wstring hostPath,[in]
boolean writable,[in] boolean automount). And I set the automount ture. I
wrote some code like below:

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IMachine
machine = vbox.findMachine("windowsxp");
IProcess process = machine.launchVMProcess(session, "gui", null);
progress.waitForCompletion(10000);
IConsole console = session.getConsole();
sharename = "shared" + String.valueOf(new Random().nextInt());
console.createSharedFolder(sharename, "d:\\uml", false, true);

And the code work well. The shared folder was automounted, and i see a new
driver with a driver letter in windows explorer. But after i logined in my
guest xp, i wanted to add a new transient shared folder(like "d:\\nst") and
i used some code like upside. Then i can't see a new driver representing
the new shared folder. And I must mount the folder manually in order to use
the folder.

Is this a bug in guest additions?Can you help me?Thank you very much.
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