Implement list box events (adding internal wxQtListBox helper), note the additional wxListBox::QtSendEvent method as wxListBoxBase:SendEvent is protected (taken from wxGTK solution)
Implement list box string methods in wxQT (used in SendEvent)
Implement list box basic selection method in wxQT
Implement list box clear and item deletion methods in wxQT
Implement client data in wxQT list box inside QListWidgetItem.data user role (using QVariant to store the pointer, similar to wxWindow::QtStoreWindowPointer but not using Q_DECLARE_METATYPE)
Implement DoInsertItems in wxQT list box (additional DoInsertOneItem is needed by wxItemContainer::DoInsertItemsInLoop)