diff --git a/examples/iotdashboard/PieChart.cpp b/examples/iotdashboard/PieChart.cpp
deleted file mode 100644
index 4a8bf227..00000000
--- a/examples/iotdashboard/PieChart.cpp
+++ /dev/null
@@ -1,36 +0,0 @@
-/******************************************************************************
- * Copyright (C) 2021 Edelhirsch Software GmbH
- * This file may be used under the terms of the 3-clause BSD License
- *****************************************************************************/
-
-#include "PieChart.h"
-
-QSK_SUBCONTROL( PieChart, Panel )
-QSK_SUBCONTROL( PieChart, Labels )
-
-PieChart::PieChart( QQuickItem* parent )
-    : QskControl( parent )
-{
-}
-
-QVector< float > PieChart::angles() const
-{
-    return m_angles;
-}
-
-void PieChart::setAngles( const QVector< float >& angles )
-{
-    m_angles = angles;
-}
-
-QVector< QString > PieChart::labels() const
-{
-    return m_labels;
-}
-
-void PieChart::setLabels( const QVector< QString >& labels )
-{
-    m_labels = labels;
-}
-
-#include "moc_PieChart.cpp"
diff --git a/examples/iotdashboard/PieChart.h b/examples/iotdashboard/PieChart.h
deleted file mode 100644
index 32901ad9..00000000
--- a/examples/iotdashboard/PieChart.h
+++ /dev/null
@@ -1,28 +0,0 @@
-/******************************************************************************
- * Copyright (C) 2021 Edelhirsch Software GmbH
- * This file may be used under the terms of the 3-clause BSD License
- *****************************************************************************/
-
-#pragma once
-
-#include <QskControl.h>
-
-class PieChart : public QskControl
-{
-    Q_OBJECT
-
-  public:
-    QSK_SUBCONTROLS( Panel, Labels )
-
-    PieChart( QQuickItem* parent = nullptr );
-
-    QVector< float > angles() const;
-    void setAngles( const QVector< float >& angles );
-
-    QVector< QString > labels() const;
-    void setLabels( const QVector< QString >& labels );
-
-  private:
-    QVector< float > m_angles;
-    QVector< QString > m_labels;
-};
diff --git a/examples/iotdashboard/PieChartSkinlet.cpp b/examples/iotdashboard/PieChartSkinlet.cpp
deleted file mode 100644
index 4bc29c8c..00000000
--- a/examples/iotdashboard/PieChartSkinlet.cpp
+++ /dev/null
@@ -1,88 +0,0 @@
-/******************************************************************************
- * Copyright (C) 2021 Edelhirsch Software GmbH
- * This file may be used under the terms of the 3-clause BSD License
- *****************************************************************************/
-
-#include "PieChartSkinlet.h"
-#include "PieChart.h"
-
-#include <QskBoxNode.h>
-#include <QskBoxShapeMetrics.h>
-#include <QskBoxBorderMetrics.h>
-#include <QskBoxBorderColors.h>
-
-PieChartSkinlet::PieChartSkinlet( QskSkin* skin )
-    : QskSkinlet( skin )
-{
-    setNodeRoles( { PanelRole, LabelsRole } );
-}
-
-QRectF PieChartSkinlet::subControlRect( const QskSkinnable*,
-    const QRectF& contentsRect, QskAspect::Subcontrol ) const
-{
-    return contentsRect;
-}
-
-QSGNode* PieChartSkinlet::updateSubNode( const QskSkinnable* skinnable,
-    quint8 nodeRole, QSGNode* node ) const
-{
-    const auto pieChart = static_cast< const PieChart* >( skinnable );
-
-    switch( nodeRole )
-    {
-        case PanelRole:
-            return updatePanelNode( pieChart, node );
-
-        case LabelsRole:
-            return updateLabelsNode( pieChart, node );
-
-        default:
-            return nullptr;
-    }
-}
-
-QSGNode* PieChartSkinlet::updatePanelNode( const PieChart* pieChart, QSGNode* node ) const
-{
-    auto boxNode = static_cast< QskBoxNode* >( node );
-
-    if( boxNode == nullptr )
-    {
-        boxNode = new QskBoxNode;
-    }
-
-    auto panelRect = subControlRect( pieChart, pieChart->contentsRect(), PieChart::Panel );
-
-    // ### when displaying a legend we might want to revise this
-    if( panelRect.width() > panelRect.height() )
-    {
-        panelRect.setWidth( panelRect.height() );
-    }
-    else if( panelRect.width() < panelRect.height() )
-    {
-        panelRect.setHeight( panelRect.width() );
-    }
-
-    const qreal radius = panelRect.width() / 2;
-
-    QskBoxShapeMetrics shapeMetrics( radius, radius, radius, radius );
-    QskBoxBorderMetrics borderMetrics = pieChart->boxBorderMetricsHint( PieChart::Panel );
-    QskBoxBorderColors borderColors = pieChart->boxBorderColorsHint( PieChart::Panel );
-    QskGradient gradient = pieChart->gradientHint( PieChart::Panel );
-    boxNode->setBoxData( panelRect, shapeMetrics, borderMetrics, borderColors, gradient );
-
-    return boxNode;
-}
-
-QSGNode* PieChartSkinlet::updateLabelsNode( const PieChart* pieChart, QSGNode* ) const
-{
-    const int labelsCount = pieChart->labels().count();
-
-    if( labelsCount < 1 )
-    {
-        return nullptr;
-    }
-
-    return nullptr;
-}
-
-#include "moc_PieChartSkinlet.cpp"
diff --git a/examples/iotdashboard/PieChartSkinlet.h b/examples/iotdashboard/PieChartSkinlet.h
deleted file mode 100644
index b06c0066..00000000
--- a/examples/iotdashboard/PieChartSkinlet.h
+++ /dev/null
@@ -1,35 +0,0 @@
-/******************************************************************************
- * Copyright (C) 2021 Edelhirsch Software GmbH
- * This file may be used under the terms of the 3-clause BSD License
- *****************************************************************************/
-
-#pragma once
-
-#include <QskSkinlet.h>
-
-class PieChart;
-
-class PieChartSkinlet : public QskSkinlet
-{
-    Q_GADGET
-
-  public:
-    enum NodeRole
-    {
-        PanelRole,
-        LabelsRole
-    };
-
-    Q_INVOKABLE PieChartSkinlet( QskSkin* skin = nullptr );
-
-    QRectF subControlRect( const QskSkinnable*,
-        const QRectF&, QskAspect::Subcontrol ) const override;
-
-  protected:
-    virtual QSGNode* updateSubNode( const QskSkinnable*,
-        quint8 nodeRole, QSGNode* node ) const override;
-
-  private:
-    QSGNode* updatePanelNode( const PieChart*, QSGNode* ) const;
-    QSGNode* updateLabelsNode( const PieChart*, QSGNode* ) const;
-};