#include <qlistview.h>class ListViewItem : public QListViewItem{public:    ListViewItem ( QListView * parent, const QString& name, const QString& tag )        : QListViewItem( parent, name ), _tag( tag ) {}    ListViewItem ( QListView * parent, QListViewItem * after, const QString& name, const QString& tag )        : QListViewItem( parent, after, name ), _tag( tag ) {}    virtual ~ListViewItem() {}    QString tag() { return _tag; }private:    QString _tag;};class ListView : public QListView{    Q_OBJECTpublic:    ListView( QWidget* parent = 0, const char* name = 0 );    ~ListView();    void dragEnterEvent( QDragEnterEvent * );    void dropEvent( QDropEvent * );    void mousePressEvent( QMouseEvent * );    void mouseMoveEvent( QMouseEvent * );    void mouseReleaseEvent( QMouseEvent * );private:    QPoint pressPos;    bool dragging;};