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In Enterprise Architect I want to model a Qt signal in a sequence diagram.

I use an asynchronous call of type signal.

When adding the message I can see that the asynchronous signal can be Call or Signal.

I'd like to know what's the difference between A signal and a call in a sequence diagram.

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Jepessen
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1 Answers1

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A call is an operation that waits for the return of the called object. In contrast a signal is just placed and no return is expected. Practically a signal is often realized with a semaphore.

qwerty_so
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