int m_dragCount;
wxPoint m_dragStart;
wxGenericTreeItem *m_dropTarget;
wxCursor m_oldCursor; // cursor is changed while dragging
wxGenericTreeItem *m_oldSelection;
wxGenericTreeItem *m_underMouse; // for visual effects
int m_dragCount;
wxPoint m_dragStart;
wxGenericTreeItem *m_dropTarget;
wxCursor m_oldCursor; // cursor is changed while dragging
wxGenericTreeItem *m_oldSelection;
wxGenericTreeItem *m_underMouse; // for visual effects