Re: [Wrapper-user] Screen Capture Problem in Win7

[Christian M. <chr...@ta...>]

Hu,

I'm very sorry for the troubles you are having.

This is a know problem starting on Windows Vista.
The black deskop you are seeing on your screenshots is from session 0.
http://www.microsoft.com/whdc/system/sysinternals/session0changes.mspx

Microsoft changed the way Windows handles Interactive services to
improve security. It is no longer possible for a process running as a
service to communicate with any desktop other than the session 0
desktop.

We are working on a way to work around this but it is going to involve
multiple processes and will NOT allow a normal Java application
running as a service which has a GUI to display its GUI directly. This
is still a little ways off however. It will involve launching
secondary Wrapper and optionally Java processes in the individual
desktop's user space that will interact with each desktop. These child
processes will then communicate back to the central Wrapper and or JVM
that is always running as a service.

We are currently working on a 3.6.0 release, which will support high
level encryption for new license features. After 3.6.0 is released,
which will be by the end of march, it is scheduled to focus on the
session 0 issue and implement a solution for it.

Please let me know if you have any questions.

Best Regards,
Christian Mueller
Tanuki Software, Ltd.

2011/5/27 Bin Hu <hu...@ms...>:
> Hi, experts
>
> My OS is win7 home edition, jdk 1.6
>
> I have write a small application which Capture the currently screen every 5
> seconds and store the image to a specified folder, I wrote it in eclipse and
> run successfully in eclipse.
>
> But when I install the application into services via Wrapper and start the
> service, it will do the same thing. The problem is that, the service always
> capture the screen as a BLACK picture.
>
> I have checked the "Allow service to interact with desktop" checkbox.
>
> Please help me!
>
> Best Regards!!
>
> Hu Bin
>
>
>
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