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How to get the selectionchange event in Qt

I have a class inherited from QWidget, now in that class I will be creating aQListView object and filling up the items to view. When the selection of items in the list view gets changed, I want to get the selectionChange event.

How can I achieve this?. Please tell me in brief.

Solution

  • When you have a view, you will have a model that will be used to select item. It's called a QItemSelectionModel.

    For example, with your QListView, you can get the selectionModel this way :

    QItemSelectionModel* selectionModel() const;

    Now, from that model, you'll be able to connect on many signals :

    void currentChanged ( const QModelIndex & current, const QModelIndex & previous )
void currentColumnChanged ( const QModelIndex & current, const QModelIndex & previous )
void currentRowChanged ( const QModelIndex & current, const QModelIndex &    previous )
void selectionChanged ( const QItemSelection & selected, const QItemSelection & deselected )

    I think it will help you a bit!