QPushButton clicked signal not received by main window

Vivian Siahaan signal needs to be connected to a method, also known as a slot Slots refer to the method that contains the code to be executed when a signal

Slot Arguments Signals can propagate arguments to each of the slots they call For instance, a signal that propagates mouse motion

signal slot As for priority, the slot of the latter signal will be handled when the event loop is returned to the object However, it is impossible to connect two slots

signal and slot in qt Define your own class with Qt signals and slots: To provide a class with its own signals and slots, the following applies Rules to be followed: