Question

It seems there is zero built-in selection support with my choice of QListView -> QAbstractListModel. Do I have to write everything from scratch? the catching of a selection event in the UI, the marking of the model item as selected, etc? It seems there is no out-of-the-box support for this.

the weird thing is that there is a QItemSelectionModel that does support this, but you cannot use it with QListView as it’s not derived from QAbstract….

Should my model class use multiple inheritance to inherit both from QItemSelectionModel and QAbstractListModel? Otherwise I don’t see how I can avoid having to re-writing this functionality myself.

My final goal is for the delegate that draws my items to know if the item is selected, both in the paint and the sizeHint function.

Answer 1

QListView is derived from QAbstractItemView, which has a method to get the selection model:

QItemSelectionModel *selectionModel = myView->selectionModel();

This method returns a pointer to the selection model, which is long-lived, i.e., you can save the pointer, connect to its signals, etc.