How to connect signal and slot in different classes in Qt?

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In addition to all features provided by Qt the ROOT version supports connecting slots to a class These slots

qt connect signal to slot with parameter You can connect as many signals as you want to a single slot, and a signal can be connected to as many slots as you need It is even possible to connect a

qt connect signal slot check that signal and slot code is definitely reached: - the connect statement - code where the signal is fired - the slot code 3 Check…