[Vala] Re : Gstreamer : cannot connect signal to GstTypeFindElement

[Frédéric Gaudy <fred_gaudy yahoo fr>]

I found the error.

object.connect("signal", callback);
isn't the a same as
object.signal += callback;

I must use
GLib.Signal.connect(object, "signal", (Glib.Callback) callback);

New code :
Gst.Element typefinder = Gst.ElementFactory.make("typefind", "typefinder");
GLib.Signal.connect(typefinder, "have-type", (Glib.Callback) this.on_have_type, this);

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De : Frédéric Gaudy <fred_gaudy yahoo fr>
À : vala-list gnome org
Envoyé le : Mardi, 2 Décembre 2008, 17h28mn 20s
Objet : [Vala] Gstreamer : cannot connect signal to GstTypeFindElement

Hi,

I'm using the Gst.Element "typefind" to detect the stream capabilities.
But when connecting to its specific signal "have-type" I've got this runtime message :
GLib-GObject-WARNING **: IA__g_object_connect: invalid signal spec "have-type"

My code is :
Gst.Element typefinder = Gst.ElementFactory.make("typefind", "typefinder");
typefinder.connect("have-type", this.on_have_type, this);

It return a GstTypeFindElement which isn't declared in gstreamer.vapi because it's loaded as plugin.

If I query signals from this type I find :
    id : 325
    signal_name : have-type

Some ideas?