CODEWITHSUNDEEP
qcustomplot
arthur.sw
arthur.sw

Reputation: 11619

Clear QCPItemText in QCustomPlot

I can't clear the items in a QCustomPlot. The method QCustomPlot::itemCount() always returns 0.

QCustomPlot *plot = new QCustomPlot(this);
qDebug() << plot->itemCount();                    // returns 0
QCPItemText *textLabel = new QCPItemText(plot);
qDebug() << plot->itemCount();                    // returns 0

Maybe QCPItemText is not considered as an item, but how do I clear QCPItemText then? Or reset QCustomPlot?

Upvotes: 0

Views: 1337

Answers (1)

Murat Şeker
Murat Şeker

Reputation: 1711

Use this after you allocate textLabel :

plot->addItem(textLabel);

From the documentation :

bool QCustomPlot::addItem ( QCPAbstractItem * item)

Adds the specified item to the plot. QCustomPlot takes ownership of the item.

Returns true on success, i.e. when item wasn't already in the plot and the parent plot of item is this QCustomPlot.

Upvotes: 1

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