An item can be added to the model with accepting the NewItemDialog.

mainwindow.h

@@ -4,7 +4,7 @@
 #include <QMainWindow>
 
 class NewItemDialog;
-class QAbstractItemModel;
+class TableModel;
 
 QT_BEGIN_NAMESPACE
 
@@ -46,7 +46,7 @@ class MainWindow : public QMainWindow {
 
   // GenericCore* m_core;
   unique_ptr<GenericCore> m_core;
-  shared_ptr<QAbstractItemModel> m_tableModel;
+  shared_ptr<TableModel> m_tableModel;
 
   /// File actions
   unique_ptr<QAction> m_newFileAct;