Hello,I've read the tutorial on http://le-hacker.org/papers/gobject about gobject's signals, properties, etc. and started to play a little on my project with this.
What I don't understand completely are the emission hooks, from the tutorial I can say that a special callback can be connected to a signal and will be called on *any* emission of that signal. I have various gobjects subclasses defined on my project and checked their "notify" signal id, all gave me the number "1".
This value is then feeded to the g_signal_add_emission_hook, so any gobject "notify" signal will trigger the same emission hook, am I correct?
I tried this code:
------------------------------------------------------------------
static gboolean
notify_emission_hook (GSignalInvocationHint *ihint,
guint n_param_values,
const GValue *param_values,
gpointer data)
{
g_message ("HOOK!!!");
return TRUE;
}
g_signal_add_emission_hook (g_signal_lookup("notify", GWP_TYPE_SHIP),
0, /* detail */
notify_emission_hook,
NULL, /* data */
(GDestroyNotify) NULL);
--------------------------------------------------------------
And on console I got this message:
GLib-GObject-WARNING **: gsignal.c:829: invalid signal id `1'
I suppose the signal id '1' is valid, but I don't understand why this
message appear, can somebody explain me all this? my head is a mess :-)
Regards, -- Lucas Di Pentima - Santa Fe, Argentina - Jabber ID: lucas lunix com ar LUNIX: Soluciones en GNU/Linux - http://www.lunix.com.ar GnuPG Public Key: http://random.sks.keyserver.penguin.de:11371/pks/lookup?op=get&search=0x6AA54FC9 Key fingerprint = BD3B 08C4 661A 8C3B 1855 740C 8F98 3FCF 6AA5 4FC9
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