[cups.development] Java Gui Backend

Michael Sweet msweet at apple.com
Wed Nov 2 08:55:49 PDT 2011


If you mean: you wrote a CUPS backend that tries to directly display a GUI, that will not work - the backend runs as root in a separate user session and has no access to the desktop.

In general, trying to communicate directly with the job's user from a backend or filter is a bad idea - the user may not be logged onto the system.  The usual method of dealing with this is to setup an IPC channel (domain socket, etc.) between a custom backend and a (running) desktop GUI application.


On Nov 2, 2011, at 3:39 AM, Thomas Kuebler wrote:
> Hello,
> 
> i have a problem with a java backend gui. I have written a java backend with some user forms. The problem is, when the backend is started, i have no key event inside the text-input-fields. When i start the backend manuel i got the key event.
> 
> Where is the problem?
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__________________________________________________
Michael Sweet, Senior Printing System Engineer, PWG Chair





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