Signalslot connection in sequence diagram

Qt signal is ten times slower than a virtual function qt signal slot Qt's signals and slots performance In the Qt environment, we will often use signals and slots to communicate between threads, so let's take a closer look at qt slot signal When a signal is emitted, the slots connected to it are usually executed immediately, just like a normal function call When this happens, the signals and slots

qt connect signal to slot Abstract: A fundamental property of the Qt framework is the so called signals and slot