Creating the QListView instance without a parent

[yashaka]

Hi, I found in many Qt-examples, either from the Official Documentation, or from the books, that the QListView (or any other View) can be created dinamically without specifying the parent, like here:

QListView *listView = new QListView;
listView->setModel(&model); // model was created previously on the stack

QListView *listView = new QListView;
listView->setModel(&model); // model was created previously on the stack

To copy to clipboard, switch view to plain text mode 

So the question is: why have it sense?