viewArea.registerKeyboardAction(deleteAction, KeyStroke.getKeyStroke(KeyEvent.VK_DELETE, 0, false), JComponent.WHEN_ANCESTOR_OF_FOCUSED_COMPONENT);
uiPanel = new JPanel();
dockingUI = new DockingUIComponent(uiPanel);
DockingUILayout layout = dockingUI.getDockingUILayout();
DockingUIStyleConfigurator configurator = dockingUI.getDockingUIConfigurator();
configurator.setDockingBarVisible(ConstantDefinition.Position.TOP, false);
configurator.setDockingBarVisible(ConstantDefinition.Position.RIG, false);
configurator.setCenterAreaDockingBarPosition(ConstantDefinition.Position.RIG);
configurator.setDockingBarStyle(ConstantDefinition.Position.LEF, ConstantDefinition.EndPoint.TAIL, ConstantDefinition.DockingBarStyle.EXTENDING);
configurator.setDockingBarStyle(ConstantDefinition.Position.BOT, ConstantDefinition.EndPoint.HEAD, ConstantDefinition.DockingBarStyle.EXTENDING);
Icon icon = new ImageIcon(getClass().getResource("resources/window16.png"));
layout.addWindow(drawingArea, "����ģ�ͱ༭��", icon, ConstantDefinition.Position.CEN, true);