void DelegadoFormulasMedicion::paint(QPainter *painter, const QStyleOptionViewItem &option, const QModelIndex &index) const
{
    if (index.isValid())
    {
        QStyleOptionButton boton;
        QRect r = option.rect;//getting the rect of the cell
        int x,y,w,h;
        w = m_ancho_boton;
        h = r.height();//button height
        x = r.left() + r.width() - w;//the X coordinate
        y = r.top();//the Y coordinate
        boton.rect = QRect(x,y,w,h);
        boton.text = "...";
        boton.state = QStyle::State_MouseOver;
        QApplication::style()->drawControl( QStyle::CE_PushButton, &boton, painter);
    }
    else
    {
        DelegadoBase::paint(painter, option, index);
    }
}

bool DelegadoFormulasMedicion::editorEvent(QEvent *event, QAbstractItemModel *model, const QStyleOptionViewItem &option, const QModelIndex &index)
{
    if( event->type() == QEvent::MouseButtonRelease )
    {
        QMouseEvent * e = (QMouseEvent *)event;
        int clickX = e->x();
        int clickY = e->y();

        QRect r = option.rect;//getting the rect of the cell
        int x,y,w,h;
        x = r.left() + r.width() - m_ancho_boton;//the X coordinate
        y = r.top();//the Y coordinate
        w = m_ancho_boton;//button width
        h = r.height();//button height

        if( clickX > x && clickX < x + w )
            if( clickY > y && clickY < y + h )
            {
                qDebug()<<"Abro dialogo";//aqui va mi dialogo
            }
        return true;
    }
    return false;
}

signals:
    void hoverIndexChanged(bool dentro);

setMouseTracking(true);
setAttribute(Qt::WA_Hover);

void TablaMed::mouseMoveEvent(QMouseEvent *event)
{
    QPoint pos = event->pos();
    QModelIndex index = indexAt(pos);
    if (index.isValid())
    {
        if (index.column() == tipoColumnaTMedCert::FORMULA)
        {
            //qDebug()<<"Estoy dentro";
            emit hoverIndexChanged(true);
        }
        else
        {
            //qDebug()<<"Estoy fuera";
            emit hoverIndexChanged(false);
        }
    }
    TablaBase::mouseMoveEvent(event);
}

connect(this,SIGNAL(hoverIndexChanged(bool)),dlgFM,SLOT(onHoverIndexChanged(bool)));