@ -466,6 +466,7 @@ public class EastRegionContainerPane extends UIEastResizableContainer {
contentPane = generateContentPane();
popupToolPane = new PopupToolPane(this, PopupToolPane.DOWN_BUTTON);
headerPane = new JPanel();
headerPane.setPreferredSize(new Dimension(headerPane.getPreferredSize().width, 0)); // 默认隐藏
contentArea = new JPanel(new BorderLayout());
contentArea.add(headerPane, BorderLayout.NORTH);
contentArea.add(contentPane, BorderLayout.CENTER);