On Tue, Nov 07, 2006 at 06:56:41PM -0500, a dc wrote: > I have a question regarding class initialization process. When we initialize > and create GtkButton, it's class structure, GtkButtonClass, needs to be > initialized. Also its parent class structures(GtkBinClass, GtkContainerClass > etc.) have to be initialized. Where all this class initialization take place > in gtk+ source code? Thanks. gtk_foo_new() creates the new object with g_object_new(GTK_TYPE_FOO, ...);. GTK_TYPE_FOO is defined as gtk_foo_get_type(). So gtk_foo_get_type() is called and it calls g_type_register_static() that passes the type information (as the class init function) to GObject. But before that gtk_foo_get_type() also uses GTK_TYPE_FOO_PARENT, so all parent type information is recursively registered. Now we get into g_object_new(). It takes a reference on the type class with g_type_class_ref(). g_type_class_ref() recursively references parent classes and calls [an internal function that in turn calls] class_init() method of the class. Notes: - Most of this of course occurs only the first time and subsequent uses of the type go the fast code path. - This is just the typical case. Yeti -- Whatever. _______________________________________________ gtk-list mailing list gtk-list@xxxxxxxxx http://mail.gnome.org/mailman/listinfo/gtk-list
