Re: How to use Gio::DBus::Connection::signal_subscribe?

[Nicolas Jäger <jagernicolas legtux org>]

Hi Christof,

> Well yes, sure - the string constructor (that converts from a const
> char *) is complaining about the null pointer.
>
> > have you try to do :
> >
> >   Glib::ustring sender;
> >
> >   ...->signal_subscribe( ..., sender, ... );
> >
> >
> > or just let the paramater not set,
> >
> >   ...->signal_subscribe( ..., , ... );
>
> but both of these options would map to empty strings (and therefore
> don't work).

did you try ? I can't try, I'm working on something... if that don't work, I have no idea...

> Looking at
> https://developer.gnome.org/gio/unstable/GDBusConnection.html#g-dbus-connection-signal-subscribe
> it should map to a NULL pointer in the C interface, but that doesn't
> seem to be possible.

your link point to the unstable doc, are you doing C++ or C ? gtkmm page is :
https://developer.gnome.org/glibmm/stable/classGio_1_1DBus_1_1Connection.html#af981fb48982bce9d4a27f70127df1cb5

you can just compare C API and C++ API.

regards,
Nicolas J.