Install property is a way for g_object_set_xxx series functions. An implementation of OO with C. -----Original Message----- From: gtk-list-admin@xxxxxxxxx [mailto:gtk-list-admin@xxxxxxxxx] On Behalf Of dhaude@xxxxxxxxxxxxxxxxxxxxxx Sent: 2003年11月19日 21:42 To: gtk-list@xxxxxxxxx Subject: Re: (GObject) What are "properties"? > Does your object "some_gtk_widget" have a property named "foo" that > takes a string value? If not, it is not surprising that the call > fails. It's a bit surprising that it crashes; I'd have expected a > warning. Ah. No, of course it doesn't have that property, which explains why my experiment didn't work (and I re-checked; indeed I did get a warning, and the crash was a follow-up error caused by my program). > Mathieu is doing a nice job on GObject documentaion. See > http://www.le-hacker.org/papers/gobject/index.html I know; I read it (and also now understood that a property first must be "installed" before it can be used to assign values to it). I guess I haven't quite wrapped my head around properties, but am I right in assuming that their main advantages (as opposed to, say, ordinary class members) are: 1) they are installable at runtime 2) they can emit signals when changed Am I also right in assuming that each and every GObject carries around with it two hash tables; one for properties and one for the get/set_data() functions? Thanks, --Daniel _______________________________________________ gtk-list@xxxxxxxxx http://mail.gnome.org/mailman/listinfo/gtk-list _______________________________________________ gtk-list@xxxxxxxxx http://mail.gnome.org/mailman/listinfo/gtk-list
