[Qt-interest] qobject_cast Vs dynamic_cast

[Sarvesh Saran]

Hi All,

I am trying to understand the differences between the qobject_cast  and dynamic_cast and the advantages offered by qobject_cast.

According to QT documentation:

The qobject_cast() function behaves similarly to the standard C++ dynamic_cast(), with the advantages that it doesn't require RTTI support and it works across dynamic library boundaries.

Can someone explain the meaning of the underlined words "it works across dynamic library boundaries" ?

I have another question,  related to signals and slots. I will appreciate it if someone can give a conceptual overview of how QT implements signals and slots internally?  ( the documentation says that we don't use templates as certain compilers do not support  advanced templates ). I was just curious how signals and slots work under the hood.

Thanks!
Sarvesh


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