[PyQt] dbus and PyKDE
Jim Bublitz
jbublitz at nwinternet.com
Sun Mar 30 20:54:55 BST 2008
On Thursday 27 March 2008 10:11, Jonathan Riddell wrote:
> I'm trying to get a printer applet into KDE (see kde-core-devel),
> however I can't actually use pyKDE because oxygen style and
> KApplication load QtDbus which causes the application to freeze when
> I'm using python-dbus.
>
> For example this app freezes when using KApplication but not when
> using QApplication.
>
> http://kubuntu.org/~jriddell/tmp/minimal.py
>
> Does anyone have any ideas on how to work around this?
With QApplication, I get:
Traceback (most recent call last):
File "minimal.py", line 63, in <module>
applet = PrinterApplet()
File "minimal.py", line 33, in __init__
bus_name = dbus.service.BusName (PDS_OBJ, bus=bus)
File "/usr/lib/python2.5/site-packages/dbus/service.py", line 113, in
__new__
retval = bus.request_name(name, name_flags)
dbus.DBusException: org.freedesktop.DBus.Error.AccessDenied: Connection
":1.102" is not allowed to own the service
"com.redhat.NewPrinterNotification" due to security policies in the
configuration file
That's the same point at which the program hangs using KApplication. (That's
also without Oxygen, which is a different problem).
KApplication uses QtDBus, so there's no eliminating that. That should ensure
the application gets automatically registered though. You can change the
organization domain via KAboutData - didn't try that though.
I guess what I'd try is some simpler stuff - see if you can communicate via
DBus at all, query for available services - in general, see if anything
works. If it doesn't, maybe it'll turn up something that provides more
insight. Send me whatever you come up with (working or not) and I'll see
where I can go from there.
I really have no understanding of the whole subject and it looks like a few
weeks of learning curve for me to dig into it much more. Doesn't look like a
quick fix is available from this end, but I'm certainly willing to go at it.
Jim
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