some simple questions on "argument direction"

[Matt Guo]

Thanks, havoc,

I also got the anwsers here as I checked the introspection XML of
/org/gnome/SettingDaemon
...
   <signal name="PluginActivated">
      <arg type="s"/>
   </signal>
...
So, arg dosn't has to have a name.

And in the introspection XML of /org/gnome/Tomboy/RemoteControl:

 <signal name="NoteSaved">
      <arg name="uri" direction="out" type="s" />
                      ~~~~~~~~~~~~~~~
 </signal>

So the signal arguments could have "out"directions or else, but as you
pointed, it dosen't matter.

B.R.
Matt

On Thu, May 21, 2009 at 12:57 PM, Havoc Pennington <hp at pobox.com> wrote:
> Hi,
>
> 2009/5/21 Matt Guo <matt at mattguo.com>:
>> So do you mean the following could also be a valid introspection result?
>>            <method name="Foo">
>>              <arg type="(iiu)" direction="in"/>
>>            </method>
>
> Yes, I think so. In any case the names aren't in the wire protocol,
> they are purely "advisory" or for code generation.
>
>> And can I ask one more question:
>> Can I assert all the arguments of a dbus signal are "out"?
>
> iirc they are all "in" though really in/out have no meaning for a
> signal since there's only one message that has all the args in it.
> While method calls have two messages, the call and the reply, call has
> in args, reply has out args.
>
> Havoc
>



-- 
B.R.
GUO Rui (Matt)