We are using U++ callbacks as multi-cast delegates in a
publish-subscribe event message scheme.
Up until now, the subscribers were static, i.e., setup when
objects were instanced at application start-up.
We are starting on Modbus mapping of data <--> modbus
registers using multiple tree controls and callbacks
to do the heavy lifting of data I/O. This mapping is
dynamic at run-time and can be changed by the operator.
This means that the delegate must have the capability of
removing one-of-n callback functions (Subscriber) from
the callback list.
I'm not sure how to do that with PTEBACK().
Can you provide me with more insight on this?
--jlf
Well, PTEBACK probably cannot really solve this issue, because it would leave Callback record intact, only made it "inactive" after destruction of pointeee.
I think that in order to correctly solve this issue, you would have to use some sort Vector<Callback> and unsubscribe command that does remove from this.
There are many possible approaches to the problem..
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