How Qt Signals and Slots Work

The central feature in this model is a very powerful mechanism for seamless object communication called signals and slots You can connect a signal to a slot

I have class A, which dynamically allocates an instance of class B when a method is called, and emits a signal which carries the instance of B

qt signal slot Qt's signals and slots mechanism ensures that if you connect a signal to a slot, the slot will be called with the signal's parameters at the right time

qt connect signal to slot In general, emitting a signal that is connected to some slots, is approximately ten times slower than calling the receivers directly, with non-