[Interest] How to use charts in designer?

[Jason H]

I've got a commercial license, and I want to layout a chart in Designer. When I try to promote it from QWidget to designer, then run it I get an error.

In the .h generated for the form by Designer:

#ifndef UI_FORM_H
#define UI_FORM_H

#include <QtCore/QVariant>
#include <QtWidgets/QAction>
#include <QtWidgets/QApplication>
#include <QtWidgets/QButtonGroup>
#include <QtWidgets/QHBoxLayout>
#include <QtWidgets/QHeaderView>
#include <QtWidgets/QSpacerItem>
#include <QtWidgets/QWidget>
#include "QChart"  // <- this should have < >
#include "aspectratiopixmaplabel.h"

class Ui_Form
{
public:
    QHBoxLayout *horizontalLayout;
    AspectRatioPixmapLabel *analizedImage;
    QSpacerItem *verticalSpacer;
    QChart *pieChart; // <- error here
    ...