Op 22/11/2015 om 20:51 schreef Bob Hood:
Ah, I see! There was the "obvious" thing I was missing. For some
unknown reason, I assumed that signals were not inherited. I just
tested without overriding the signal and polymorphism worked as expected.
To to clear that up: there is nothing special about signals. It's all
just plain C++ after all. A signal is a (public*) method who's
implementation is provided by moc for you. The 'emit' keyword does
nothing, it is syntactic sugar. Leave it out and everything still works
as expected (but I would not recommend doing this in real code.)
As you know, public methods are available for calling from all
subclasses as well.
André
*) In Qt 5. In Qt 4 it used to be protected. Nothing changes for the
purpose of this message there.
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