change cursor

         bool PaletteView::on_enter_swatch(GdkEventCrossing* event)
         {
             Glib::RefPtr<Gdk::Window> win = m_eventBox.get_window();
             if (win)
             {
                 Glib::RefPtr<Gdk::Display> dpy = Gdk::Display::get_default();
                 Gdk::Cursor cursor(dpy, Gdk::HAND2);
                 win->set_cursor(cursor);
             }
             return true;
         }


         bool PaletteView::on_leave_swatch(GdkEventCrossing* event)
         {
             Glib::RefPtr<Gdk::Window> win = m_eventBox.get_window();
             if (win)
             {
                 win->set_cursor();
             }
             return true;
         }