diff --git a/examples/iotdashboard/LightDisplay.cpp b/examples/iotdashboard/LightDisplay.cpp
index 7f3e9ca7..b2b3fdb9 100644
--- a/examples/iotdashboard/LightDisplay.cpp
+++ b/examples/iotdashboard/LightDisplay.cpp
@@ -6,17 +6,7 @@
 #include "LightDisplay.h"
 #include "Skin.h"
 
-#include <QskAnimator.h>
-#include <QskRgbValue.h>
-#include <QskSetup.h>
-#include <QskTextLabel.h>
-#include <QskQuick.h>
-
-#include <QGuiApplication>
-#include <QQuickWindow>
-#include <QQuickPaintedItem>
-#include <QPainter>
-#include <QRadialGradient>
+#include <QskEvent.h>
 
 QSK_SUBCONTROL( LightDisplay, Panel )
 QSK_SUBCONTROL( LightDisplay, Groove )
@@ -26,6 +16,8 @@ QSK_SUBCONTROL( LightDisplay, LeftLabel )
 QSK_SUBCONTROL( LightDisplay, RightLabel )
 QSK_SUBCONTROL( LightDisplay, Knob )
 
+QSK_STATE( LightDisplay, Pressed, ( QskAspect::FirstUserState << 1 ) )
+
 LightDisplay::LightDisplay( QQuickItem* parent )
     : QskBoundedValueInput( parent )
 {
@@ -39,6 +31,11 @@ LightDisplay::LightDisplay( QQuickItem* parent )
     setShadowColor( 0xe5e5e5 );
 }
 
+bool LightDisplay::isPressed() const
+{
+    return hasSkinState( Pressed );
+}
+
 void LightDisplay::setShadow( const QskShadowMetrics& shadow )
 {
     m_shadow = shadow;
@@ -72,4 +69,38 @@ QColor LightDisplay::shadowColor() const
     return m_shadowColor;
 }
 
+void LightDisplay::mousePressEvent( QMouseEvent* event )
+{
+    QRectF handleRect = subControlRect( LightDisplay::Knob );
+
+    if ( handleRect.contains( event->pos() ) )
+    {
+        setSkinStateFlag( Pressed );
+    }
+    else
+    {
+        QskBoundedValueInput::mousePressEvent( event );
+    }
+}
+
+void LightDisplay::mouseMoveEvent( QMouseEvent* event )
+{
+    if ( !isPressed() )
+        return;
+
+    // ### check if arc contains the position
+
+    const auto mousePos = qskMousePosition( event );
+    const auto rect = subControlRect( ColdAndWarmArc );
+
+    const qreal ratioX = ( mousePos.x() - rect.x() ) / rect.width();
+
+    setValueAsRatio( ratioX );
+}
+
+void LightDisplay::mouseReleaseEvent( QMouseEvent* /*event*/ )
+{
+    setSkinStateFlag( Pressed, false );
+}
+
 #include "moc_LightDisplay.cpp"
diff --git a/examples/iotdashboard/LightDisplay.h b/examples/iotdashboard/LightDisplay.h
index 29409524..ba62c7ac 100644
--- a/examples/iotdashboard/LightDisplay.h
+++ b/examples/iotdashboard/LightDisplay.h
@@ -15,10 +15,13 @@ class LightDisplay : public QskBoundedValueInput
 
   public:
     QSK_SUBCONTROLS( Panel, Groove, ColdAndWarmArc, ValueText, LeftLabel,
-                     RightLabel, Knob )
+                     RightLabel, Knob ) // ### rename knob to handle?
+    QSK_STATES( Pressed )
 
     LightDisplay( QQuickItem* parent = nullptr );
 
+    bool isPressed() const;
+
     void setShadow( const QskShadowMetrics& );
     const QskShadowMetrics& shadow() const;
 
@@ -28,6 +31,11 @@ class LightDisplay : public QskBoundedValueInput
     void setShadowColor( const QColor& );
     QColor shadowColor() const;
 
+  protected:
+    void mousePressEvent( QMouseEvent* e ) override;
+    void mouseMoveEvent( QMouseEvent* e ) override;
+    void mouseReleaseEvent( QMouseEvent* e ) override;
+
   private:
     QskShadowMetrics m_shadow;
     QColor m_shadowColor = Qt::black;