QCustomPlot Discussion and Comments

In this method, it is assumed that both keyAxis and valueAxis are set... If not...

Fix below

QList<QCPAbstractItem *> QCPAxisRect::items() const
{
    // Note: don't just append all QCPAxis::items() into a list, because we might get duplicate entries
    //       and miss those items that have this axis rect as clipAxisRect.
    QList<QCPAbstractItem*> result;
    foreach (QCPAbstractItem *item, mParentPlot->mItems)
    {
        if (item->clipAxisRect() == this)
        {
            result.append(item);
            continue;
        }
        foreach (QCPItemPosition *position, item->positions())
        {
            if (position->axisRect() == this ||
                (position->keyAxis() && position->keyAxis()->axisRect() == this) ||
                (position->valueAxis() && position->valueAxis()->axisRect() == this))
            {
                result.append(item);
                break;
            }
        }
    }
    return result;
}