Re: DBUS signals?

[Benoît Minisini <benoit.minisini@xxxxxxxxxxxxxxxx>]

Le 27/09/2024 à 01:19, Benoît Minisini a écrit :
> Le 27/09/2024 à 00:08, Jussi Lahtinen a écrit :
> >     I run your posted project, and I noticed that the middle click event
> >     was
> >     catched. I didn't check if this project actually uses DBusSignal.
> >
> >     Anyway, you must ensure that your DBusSignal handler does not catch
> >     DBus
> >     messages that should be sent to the DBus objects created by the
> >     TrayIcon
> >     class implementation. It could explain why it does not see the DBus
> >     MiddleClick signal sent by the desktop!
> >
> >
> > Only middle click is send with DBus? Other buttons work.
>
> Middle click works here with KDE, with the DBusSignal handler activated.
>
> If I shutdown the computer while GAlarm is running, KDE tells that 
> GAlarm has cancelled the shutdown.
>
> I guess it's because its main window cannot be closed. And so the 
> shutdown is canceled, and the PrepareForShutdown signal is not sent.
>
> Regards,

I test with a little program that just created the same DBusSignal 
object than GAlarm, and wrote in a text file the received signals.

I run 'dbus-monitor' at the same time and redirect its output in a file.

Both for catching any signal send with the 
'org.freedesktop.login1.Manager' interface.

Result: Both succeed in catching "PrepareForSleep" when sleeping. But 
none caught "PrepareForShutdown" or any other signal when shutting down.

Strange... Maybe the system shutdown is too fast to let 'dbus-monitor' 
or my little program write into its file? What's the point of this 
signal then, if it does not give any program enough time to do anything?

I suggest that you use only the Close event of the main form to detect 
that you are shutting down or logout. It's more logical, are your 
program cannot survive a logout anyway.

Regards,

--
Benoît Minisini.