[solved] openPersistentEditor(index) not working



  • Dear friends,

    Can you help me please?

    I'm trying to apply QSpinbox delegate to my application.

    I tried to imitate Spin Box Delegate Example in Qt creator and "QItemDelegate tutorial video":http://www.youtube.com/watch?v=EJf-vZ6FQfc.

    I successfully created the delegates. But openPersistentEditor() method not working. Which use to display the data already in edit mode.

    What is missing?

    Here my codes.

    @ QStandardItemModel *item_model;
    ComponentDelegate *component_delegate;

        item_model = new QStandardItemModel(4,2,this);
        component_delegate = new ComponentDelegate(this);
    
        for (int row = 0; row < 4; ++row) {
            for (int col = 0; col < 2; ++col) {
                QModelIndex index = item_model->index(row,col,QModelIndex());
                ui->height_amperate_tableview->openPersistentEditor(index);
                item_model->setData(index,0);
            }
        }
    
        ui->height_amperate_tableview->horizontalHeader()->setStretchLastSection(true);
        ui->height_amperate_tableview->setModel(item_model);
        ui->height_amperate_tableview->setItemDelegate(component_delegate);@
    

    @class ComponentDelegate:public QItemDelegate
    {
    public:
    ComponentDelegate(QObject *parent): QItemDelegate(parent){}

    QWidget *createEditor(QWidget *parent, const QStyleOptionViewItem &option, const QModelIndex &index) const
    {
        QSpinBox *editor=new QSpinBox(parent);
        editor->setMinimum(0);
        editor->setMaximum(100);
        return editor;
    }
    
    void setEditorData(QWidget *editor, const QModelIndex &index) const
    {
        int value = index.model()->data(index,Qt::EditRole).toInt();
    
        QSpinBox *spinbox = static_cast<QSpinBox*>(editor);
        spinbox->setValue(value);
    }
    
    void setModelData(QWidget *editor, QAbstractItemModel *model, const QModelIndex &index) const
    {
        QSpinBox *spinbox = static_cast<QSpinBox*>(editor);
        spinbox->interpretText();
        int value = spinbox->value();
        model->setData(index,value,Qt::EditRole);
    }
    
    void updateEditorGeometry(QWidget *editor, const QStyleOptionViewItem &option, const QModelIndex &index) const
    {
        editor->setGeometry(option.rect);
    }
    

    };@

    Thanks in advance.


  • Lifetime Qt Champion

    Hi,

    One thing from your code that look strange is that you are opening the persistent editor before setting your delegate.



  • Thank you for replying me.

    As you mentioned I set the delegate before opening the persistent editor.

    @
    QStandardItemModel *item_model;
    ComponentDelegate *component_delegate;

    item_model = new QStandardItemModel(4,2,this);
    component_delegate = new ComponentDelegate(this);

    ui->height_amperate_tableview->horizontalHeader()->setStretchLastSection(true);

    ui->height_amperate_tableview->setModel(item_model);

    ui->height_amperate_tableview->setItemDelegate(component_delegate);

    for (int row = 0; row < 4; ++row) {
    for (int col = 0; col < 2; ++col) {
    QModelIndex index = item_model->index(row,col,QModelIndex());
    ui->height_amperate_tableview->openPersistentEditor(index);
    item_model->setData(index,0);
    }
    }

    @

    It is working Now.

    Thank you very much for your help.


  • Lifetime Qt Champion

    You're welcome !

    Since your view is working please update the thread title prepending [solved] so other forum users may know a solution has been found :)



  • just forgot. :)

    thanks.


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