Add bar chart example

Example shows using setBarSelected().
Selecting bars changes their color and information of selected/unselected bars.
[QtCharts][Example] Added Example

Task-number: QTBUG-89445
Pick-to: 6.2
Change-Id: Ic863e763d2cfa552629f42afd1232c1f77b95e95
Reviewed-by: Miikka Heikkinen <miikka.heikkinen@qt.io>

1 files changed, 46 insertions, 0 deletions

diff --git a/examples/charts/selectedbar/utilities.h b/examples/charts/selectedbar/utilities.h
new file mode 100644
index 00000000..41fe9610
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+++ b/examples/charts/selectedbar/utilities.h
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+/****************************************************************************
+**
+** Copyright (C) 2021 The Qt Company Ltd.
+** Contact: https://www.qt.io/licensing/
+**
+** This file is part of the Qt Charts module of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:GPL$
+** Commercial License Usage
+** Licensees holding valid commercial Qt licenses may use this file in
+** accordance with the commercial license agreement provided with the
+** Software or, alternatively, in accordance with the terms contained in
+** a written agreement between you and The Qt Company. For licensing terms
+** and conditions see https://www.qt.io/terms-conditions. For further
+** information use the contact form at https://www.qt.io/contact-us.
+**
+** GNU General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU
+** General Public License version 3 or (at your option) any later version
+** approved by the KDE Free Qt Foundation. The licenses are as published by
+** the Free Software Foundation and appearing in the file LICENSE.GPL3
+** included in the packaging of this file. Please review the following
+** information to ensure the GNU General Public License requirements will
+** be met: https://www.gnu.org/licenses/gpl-3.0.html.
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#ifndef UTILITIES_H
+#define UTILITIES_H
+
+#include <QList>
+#include <QBarSet>
+
+namespace Utilities
+{
+    QBarSet *createChickenSet();
+    QBarSet *createPorkSet();
+    QBarSet *createTurkeySet();
+    QBarSet *createHamSet();
+    QStringList createYearCategories();
+    qreal totalSum(const QList<QBarSet *> &setList);
+}
+
+#endif // UTILITIES_H