C++ - Why do I create these widgets on the heap?

Question

When creating a GUI with C++ and Qt you can create a label for example like this :

QLabel* label = new QLabel(\"Hey you!\", centralWidgetParent);
         


        

Answer 1

Main reason - possibility of dynamic creating / removing widgets. QObject (and QWidget) desing as classes that could not have copy constructor, so you couldn't pass is in arguments (by value/reference). So using pointers in all cases makes code more simple and clear.