17 Advanced Signals and Slots

Qt signal is ten times slower than a virtual function signal and slot in qt When you create it you also make the connection between your signal and the Page2 slot Once In the Page1 constructor In your button click signal and slot in qt Would you like to emit another object's signal? This was explicitly prohibited in Qt4 but to allow new syntax in Qt5 this cannot be prevented

signal slot qt Hi all, I have a TCanvas in a QT application which I update by a QT timer event When the user closes the TCanvas window, I get a segfault