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Re: D-Bus signal parameter and incorrect xml generation

On Tue, Aug 16, 2016 at 2:53 AM, Albert Astals Cid <aacid@xxxxxxx> wrote:
El dimecres, 10 d’agost de 2016, a les 23:00:19 CEST, Aditya Sharma va
> Hey !
> I'm trying to pass a QVariantMap as a D-Bus signal parameter so that the
> intended application gets the updated data every time that signal is
> emitted.

Do you have a branch/repository or sample code where this happens? Much easier
to debug if the code is ready for tetsing than if we have to re-create the
problem scenario you have from scratch.

Yes. Just try to make/compile the "devel" branch of this repository: https://github.com/g33kyaditya/KDE-Now
That should give you the error I am talking about.



> I have a class A, in which I have a Q_SIGNAL, as:
> void update(QVariantMap map)
> Inside CMakeLists.txt, I call qt5_generate_dbus_interface with OPTIONS -M -S
> The generated XML snippet is something like this :-
>     <signal name="update">
>       <arg name="map" type="a{sv}" direction="out"/>
>       <annotation name="org.qtproject.QtDBus.QtTypeName.Out0"
> value="QVariantMap"/>
> Further in CMake, I do a qt5_add_dbus_adaptor on the generated xml file. On
> compilation, I get the following error although (and make fails):
> " You should add <annotation name="org.qtproject.QtDBus.QtTypeName.In0"
> value="<type>"/> to the XML description "
> (Notice the In0 and Out0 in the two annotations)
> Now, I proceeded and did what the compilation error said, and changed the
> annotation accordingly in the signal. And everything worked.
> Does anyone have an idea, what's happening ? And why it's happening ?
> Should I just use this xml file as such, instead of generating it during
> make ?
> Thanks
> Aditya