About DBUS signals
thiago at kde.org
Tue Oct 17 05:06:41 PDT 2006
Sumit Jain wrote:
>I tell the DBUS system that i am interested in receiving a signal by
> first creating a proxy to the remote object and then doing a add
> followed by connect signal. I hope i am correct till here.
We're handling two different levels here.
If we look at the low-level, you tell D-Bus that you're interested in a
signal by adding a match rule.
If we look at the high-level, you tell D-Bus that you're interested in a
signal by creating a proxy and connecting the signal to a callback
>Here is something that i am not able to comprehend. What does the remote
>object do, so that the callback that i registered using
>dbus_g_proxy_connect_signal is called???
It emits the signal (in the low-level: it sends a message to D-Bus of
type "signal" and no destination).
>What i mean to say is that how
> does the DBUS system know that the signal has been emitted by the
> remote object and it needs to broadcast. There must be some API like
> dbus_signal_send or something similar.
There's dbus_message_new_signal, followed by one of the
Thiago Macieira - thiago (AT) macieira.info - thiago (AT) kde.org
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