How I can draw shadows on the QQuickPaintedItem?

Hi everyone! I have a UI element as a subclass of QQuickPaintedItem. This class must draw a some datas using paint “method”. How I can draw shadow for this element? For now I create a QML file which draw shadow using “DropShadow” element but I have a problem when my element has a subviews. I need to drag and drop functions. If I add a MouseArea I can’t detect click to child. Could you tell me best solution for this? If I use QQuickPaintedItem I have a two problem: I don’t know how to draw shadows using QPainter. I can draw a black rectangle as a background but how I can apply blur etc? I can’t turn on drag and croup for item. My *.h file: class MslViewItem : public QQuickPaintedItem {         Q_OBJECT         Q_CLASSINFO("version", "1.0.0")           Q_PROPERTY(MslElement* element READ getElement WRITE setElement NOTIFY elementChanged)         Q_PROPERTY(QList<MslViewItem*> subviews READ getSubviews NOTIFY subviewsChanged)       private:         MslElement* m_element;         QList<MslViewItem*> m_subviews;           void loadViewSettings();     public:         explicit MslViewItem(QQuickPaintedItem *parent = 0);         MslViewItem(const MslViewItem& obj);         MslViewItem& operator=(const MslViewItem& obj);         MslViewItem(MslElement* elem, QQuickPaintedItem *parent = 0);           virtual void paint(QPainter *painter);         virtual void dragMoveEvent(QDragMoveEvent * event);           inline MslElement* getElement(){return m_element;}         inline QList<MslViewItem*> getSubviews(){return m_subviews;}         inline void setElement(MslElement* obj){m_element = obj; loadViewSettings(); emit elementChanged(m_element);}     signals:         void elementChanged(MslElement* obj);         void subviewsChanged(QList<MslViewItem*> list);     public slots: }; QML_DECLARE_TYPE(MslViewItem) My *.cpp file void MslViewItem::loadViewSettings() {     setFillColor(Qt::transparent);       if(m_element)     {         QVariant frame = m_element->propertyByKey("frame");         if(!frame.isNull() && frame.canConvert<QVariantMap>())         {             QVariantMap map = frame.toMap();             setWidth(map["width"].toFloat());             setHeight(map["height"].toFloat());         }     } }   MslViewItem::MslViewItem(QQuickPaintedItem *parent) :     QQuickPaintedItem(parent) {     m_element = NULL;     m_subviews.clear();       setFlag(ItemHasContents, true);     setFlag(ItemClipsChildrenToShape, true);     setFlag(ItemAcceptsDrops, true);     setRenderTarget(QQuickPaintedItem::InvertedYFramebufferObject);     setParentItem(parent); }   MslViewItem::MslViewItem(MslElement* elem, QQuickPaintedItem *parent) :     QQuickPaintedItem(parent) {     m_element = elem;     m_subviews.clear();       setFlag(ItemHasContents, true);     setFlag(ItemClipsChildrenToShape, true);     setFlag(ItemAcceptsDrops, true);     setRenderTarget(QQuickPaintedItem::InvertedYFramebufferObject);     setParentItem(parent);       loadViewSettings(); }   MslViewItem::MslViewItem(const MslViewItem& obj) {     m_element = obj.m_element;     m_subviews = obj.m_subviews; }   MslViewItem& MslViewItem::operator=(const MslViewItem& obj) {     try     {         m_element = obj.m_element;         m_subviews = obj.m_subviews;           return *this;     }     catch(std::exception& exception)     {         Q_UNUSED(exception)           return *this;     } }   void MslViewItem::paint(QPainter *painter) {     //Some draw code here }   void MslViewItem::dragMoveEvent(QDragMoveEvent * event) {     Q_UNUSED(event) } use in qml:          MslViewItem {              id: viewItem              anchors.centerIn: parent              element: viewRoot.element                Repeater {                  id: subviewsRepeater                  anchors.fill: parent                  model: (element !== null) ? element.toSubViewsList() : 0                  delegate: Loader {                      id: subviewLoader                        function subviewSelected(obj)                      {                          viewRoot.clicked(obj);                      }                        Component.onCompleted: {                          var obj = element.subviewByKey(element.toSubViewsList()[index]);                          if(obj !== null)                          {                              var options = {appRoot: viewRoot.appRoot,                                             element: obj};                              subviewLoader.setSource("MslQmlViewItem.qml", options);                          }                      }                        onLoaded: {                          if(subviewLoader.item !== null)                          {                              subviewLoader.item.clicked.connect(subviewSelected);                          }                      }                  }              }          }