Re: Fwd: registering Gtk.EventButton as argument to custom signal

[Timo <timovwb gmail com>]

Op 03-05-16 om 19:57 schreef Krister Swenson:
> Hello,
>
> I'm trying to port my open source
> (https://bitbucket.org/thekswenson/alpha) GTK 2 code to GTK 3.
>
> A have defined a custom signal as follows:
>
> __gsignals__ = {'clicked' : (GObject.SignalFlags.RUN_LAST, None,
>                              (GObject.TYPE_STRING, Gdk.Event))}
>
> I later emit this signal:
>
> self.emit('clicked', None, event)
>
> where "event" is a Gdk.EventButton.
>
> This code worked under GTK 2 but apparently an EventButton is not an
> Event anymore.  I've tried registering the event with Gdk.EventButton
> instead of Gdk.Event but I get an error:
>
> ...
> /usr/lib/python2.7/dist-packages/gi/types.py:205: Warning:
> /build/glib2.0-t9oPgV/glib2.0-2.48.0/./gobject/gsignal.c:1674:
> parameter 2 of type 'void' for signal "xdot+DotWidget::clicked" is not
> a value type
>   _gobject.type_register(cls, namespace.get('__gtype_name__'))
> ...
Looking at this error, are you using the xdot library by any chance? I 
had to port this to Python3 and GTK3 a year or two ago for our 
application. I looked it up and this is the line in my xdot port with a 
special GTK3 comment that I had to change the type.

    __gsignals__ = {
        'clicked' : (GObject.SIGNAL_RUN_LAST, None, (str, object))
    }

Hope this helps,
Timo

> Any chance somebody could explain to me what's going on here?
>
> I appreciate the help, thank you.
>
> kms
>
>
>
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