Lets say I've written an abstract class Foo (a class that is not
supposed to be instantiated), and a
class that inherits from Foo called Bar, which is instantiable. Foo
takes 2 constructor arguments/properties
"x" and "y". Bar:s constructor takes the samt arguments. In order to
initialize some of Bar:s attributes,
it needs to know both "x" and "y". In the bar_init() function I can't
get the "x" and "y" properties,
because they arent set yet, so where do I initialize the attributes?
Should I hook into the get/set property of
both "x" and "y", and once both are set (check with some boolean
variables), I can initialize them in bar_set_property() ?
That way sounds a little too complicated so I think I'm missing something.
The GObject documentation states:
static void
maman_bar_init (GTypeInstance *instance,
gpointer g_class)
{
MamanBar *self = (MamanBar *)instance;
self->private = g_new0 (MamanBarPrivate, 1);
/* initialize all public and private members to reasonable default values. */
/* If you need specific consruction properties to complete initialization,
* delay initialization completion until the property is set.
*/
}
What does it mean by "delay initialization completion until the property
is set" ?
Regards Jacob Kroon
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