=?Windows-1252?Q?RE:_GtkSwi?= =?Windows-1252?Q?tch_=97_lack?= =?Windows-1252?Q?_of_specif?= =?Windows-1252?Q?ic_signal?=
- From: John Lumby <johnlumby hotmail com>
- To: <tadeboro gmail com>
- Cc: gtk-app-devel maillist <gtk-app-devel-list gnome org>
- Subject: RE: GtkSwitch — lack of specific signal
- Date: Fri, 4 Mar 2011 21:17:24 -0500
Ahhhh! Thank you Tadej. No, mine had only two parameters, the obj ptr and the data ptr.I added the
paramspec in between and now all works perfectly.
By the way - this seems a bit unpleasant, that some callbacks have a prototype of (objptr, dataptr) and
others have (objptr, paramspec, dataptr).How would I know which one to use? Is it that some are in the
gtk layer (2 params) but other like notify::active are in the gdk layer (3 params)?And I kind of feel
something should have alerted me although I don't know what - I guess the compiler doesn't know.
I suppose this is all described somewhere - where? (I am new to gtk application programming).
Subject: RE: GtkSwitch — lack of specific signal
From: tadeboro gmail com
To: johnlumby hotmail com
CC: gtk-app-devel-list gnome org
Date: Sat, 5 Mar 2011 02:50:05 +0100
Thanks both. I tried notify::active and it works as well as event-after but still the data pointer
argument is bad on entry to the callback(it's not zero but not a valid GTK_WIDGET either). I don't
know why - maybe something related to GtkSwitch or maybe a mistake in my code somewhere.
Cheers, John Lumby
Are you sure your functions has the right prototype? GObject::notify
signal handlers should have callbacks defined like this:
notify_callback (GObject *obj,
/* La la la */
tadeboro gmail com
tadej borovsak gmail com
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