I'm recently study GObject and hope someone can explain
the difference between
Abstract class defined by G_DEFINE_ABSTRACT_TYPE
and interface.
I think if I use G_DEFINE_ABSTRACT_TYPE to create a
class and define all member functions pointer to NULL (pure
virtual) without implementation, then I will have an interface.
So why GType introduce a new type called INTERFACE.
What kind of new features are introduced in GType's interface ?
Thanks
KC
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