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Any body can send a "listener design pattern" sample example with c++. i have problem like.
It seems to me that the observer design pattern as described in gof is really the same thing as listeners found in various toolkits.
Using the command object design pattern in c# asp .net commands that were executed, or even undo a previous command.
Implementing undo functionality using design patterns.
The listener pattern is commonly used in the awt since jdk 1.1. in fact, the listener has been the base for the event handling mechanism for ui events in java.