QPushButton clicked signal not received by main window

signal and slot   Dan signal slot qt

Prefer to use normalised signalslot signatures That is, remove all dispensable whitespace, const-& , and top-level const If you're in doubt about how the

Where ever you have a signal you'd have a call-back subroutine called Slots are callbacks moc is connecting the signal to the slot Strictly Signals and slots is a language construct introduced in Qt for communication between objects which makes it easy to implement the Observer pattern while

slot 6 The signals and slots mechanism is type safe The signature of a signal must match the signature of the receiving slot  Here we have tried a signal-slot link The aim of these two lines of code is when the button is pressed the text of the label