Giới thiệu Signals và Slots trong PyQt | Tìm ở đây
The limitations of callbacks are partly resolved by the signal and slot architecture that Qt uses. The idea is that all objects can emit signals.
Slot là gì? Slot nghĩa là gì, Sử dụng "Slot" đúng cách
ROOT supports its own version of the signal/slot communication mechanism originally featured in Qt, a C++ GUI application framework by the Qt Company.
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Example code for singnals and slots writen in c++ using Qt framework. - ExecomNord/cpp-qt-signal-slot-example.