dbus_message_new_signal parameter description

[Mike Gorse]

Signals are broadcasts and don't specify a destination--when you send a 
signal, you aren't concerned with the foreign objects that are listening 
for it. The signal will be routed to all connections that have a match 
rule which covers the signal.

So I'd recommend using the interface that you're generally using for the 
object emitting the signal, if you think that makes sense, and setting up 
a match rule for it on the connection that needs to receive it. Your other 
option is to use a method call instead (and it's possible to designate a 
method call as not needing a reply).

Hth,
-Mike G-

On Mon, 2 Jan 2012, Bogdan Lotko wrote:

> Hello,
> 
> in the interface parameter description of the dbus_message_new_signal() method
> one can read: "the interface the signal is emitted from"
> 
> How is it to understand?  I thought the signal will be emitted to (for) a foreign object with a given interface interface.
> e.g. in my case the object emitting a signal puplished its own interface, but it is not the interface where the signal shall be send to.
> 
> Thanks for your help
> 
> Bogdan
> 
>