[vbox-dev] IEventSource::registerListener Active Mode

[Klaus Espenlaub]

Hi Tonino,

On 15.11.2012 10:10, tonino.barca1 at alice.it wrote:
>
> Hi Klaus,
> i use the XPCOM API from Java.
> I am an student of University of Messina and I'm working on a project
> called CleverCloud.
> i have to implement a function concern to the status of various VM.
> I tried to find examples but they all work with passive listener.

The active listeners only work from C++ at the moment. In theory it 
could be made working from Java too, but this is lots of work and no one 
really needs it. Use passive event handling, it works reliably, is 
portable and receives exactly the same information.

If you absolutely need callbacks (which always create synchronization 
headaches): create a thread which does the passive event listening and 
trigger the callbacks yourself.

Klaus

> I trust in his help
> thanks
> Tonino Barca
>
>
> ----Messaggio originale----
>
>     Da: vbox-dev-request at virtualbox.org
>     Data: 14-nov-2012 21.00
>     A: <vbox-dev at virtualbox.org>
>     Ogg: vbox-dev Digest, Vol 73, Issue 12
>
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>     Today's Topics:
>
>     1. IEventSource::registerListener Active Mode
>     (tonino.barca1 at alice.it)
>     2. Re: IEventSource::registerListener Active Mode (Klaus Espenlaub)
>
>
>     ----------------------------------------------------------------------
>
>     Message: 1
>     Date: Wed, 14 Nov 2012 12:11:16 +0100 (CET)
>     From: "tonino.barca1 at alice.it" <tonino.barca1 at alice.it>
>     Subject: [vbox-dev] IEventSource::registerListener Active Mode
>     To: <vbox-dev at virtualbox.org>
>     Message-ID: <13afe9da94a.tonino.barca1 at alice.it>
>     Content-Type: text/plain; charset="utf-8"
>
>
>     Hi,as object I need help to understand the operation of
>     "IEventSource :: registerListener" in Active Mode.I am using the API
>     for JavaCould you please give me a hand because I use this type of
>     calback in my thesis work.
>     Tonino Barca
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>     ------------------------------
>
>     Message: 2
>     Date: Wed, 14 Nov 2012 12:19:00 +0100
>     From: Klaus Espenlaub <klaus.espenlaub at oracle.com>
>     Subject: Re: [vbox-dev] IEventSource::registerListener Active Mode
>     To: vbox-dev at virtualbox.org
>     Message-ID: <50A37E24.2080001 at oracle.com>
>     Content-Type: text/plain; charset=ISO-8859-1; format=flowed
>
>     On 14.11.2012 12:11, tonino.barca1 at alice.it wrote:
>      >
>      > Hi,
>      > as object I need help to understand the operation of "IEventSource ::
>      > registerListener" in Active Mode.
>      > I am using the API for Java
>
>     Do you use the COM/XPCOM API from Java, or the webservice?
>
>      > Could you please give me a hand because I use this type of
>     calback in my
>      > thesis work.
>
>     There are quite a few samples in the VirtualBox sources, however using
>     C++...
>
>     Klaus
>
>      >
>      > Tonino Barca
>
>
>
>     ------------------------------
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>     End of vbox-dev Digest, Vol 73, Issue 12
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