void TreeWidget::keyPressEvent(QKeyEvent *event){
    QTreeWidget::keyPressEvent(event);
    if (event->key() == Qt::Key_Escape)
    {
        event->accept();
        emit EscKeyPressed(QTreeWidgetItem *item);
    }
    if (event->key() == Qt::Key_Enter)
    {
        event->accept();
        emit EnterKeyPressed(QTreeWidgetItem *item);
    }
}

void EscKeyPressed(QTreeWidgetItem *item){
}

void EnterKeyPressed(QTreeWidgetItem *item){
}

connect(this, SIGNAL(itemChanged(QTreeWidgetItem*, int)), this, SLOT(onTreeItemChanged(QTreeWidgetItem*)));
connect(this, SIGNAL(EscKeyPressed(QTreeWidgetItem*)),
                 this, SLOT(onTreeItemChanged(QTreeWidgetItem*)));
connect(this, SIGNAL(EnterKeyPressed(QTreeWidgetItem*)),
                 this, SLOT(onTreeItemChanged(QTreeWidgetItem*)));