Returns the rect that is defined by the inputed date time.
        
        :return     <QRectF>

def dateTimeRect( self, dateTime ):
        """
        Returns the rect that is defined by the inputed date time.
        
        :return     <QRectF>
        """
        data = self._dateTimeGrid.get(dateTime.toTime_t())
        if ( data ):
            return QRectF(data[1])
        return QRectF()