如何禁用(灰显)JSplitPane上的箭头按钮。我知道如何从BasicSplitPaneDivider获取按钮:
final int UP_ARROW = 0; final BasicSplitPaneUI ui = (BasicSplitPaneUI) splitPane.getUI(); final BasicSplitPaneDivider divider = ui.getDivider(); final JButton upArrowButton = (JButton) divider.getComponent(UP_ARROW);
,但是当我尝试upArrowButton.setEnabled(false)
时,它不会使向上箭头变灰,但会禁用它。我希望用户能够获得禁用向上箭头按钮的视觉反馈。我确实尝试了upArrowButton.getAction().setEnabled(false)
,但它不起作用(NullPointerException)。
请帮忙
答案 0 :(得分:4)
您是否尝试过setOneTouchExpandable(false)
?
答案 1 :(得分:1)
final int UP_ARROW = 0;
final BasicSplitPaneUI ui = (BasicSplitPaneUI) splitPane.getUI();
final BasicSplitPaneDivider divider = ui.getDivider();
final JButton upArrowButton = (JButton) divider.getComponent(UP_ARROW);
upArrowButton.setVisible(false);
这项工作对我来说