java - 当用户单击窗口的关闭按钮时隐藏框架而不是关闭

Question

我有一个显示窗口的应用程序。当用户按下“关闭”按钮而不是关闭窗口，我只想隐藏这个窗口，我该怎么做？

这是我的代码(它不起作用，该应用程序在单击时关闭):

  object UxMonitor {

  def main(args: Array[String]) {
    val frame = new MainScreen()
    frame.peer.setDefaultCloseOperation(WindowConstants.HIDE_ON_CLOSE)
    initTrayIcon(frame.peer)
  }

....

class MainScreen extends MainFrame {
      private val HEADERS = Array[Object]("Security", "Last Price", "Amount", "Cost")
      private val quotes = new Quotes()
      private val tableModel = new DefaultTableModel()

      title = "UX Monitor"

      tableModel.setColumnIdentifiers(HEADERS)

      private val table = new Table {
        model = tableModel
      }

      contents = new ScrollPane {
        contents = table
      }

      quotes.setListener(onQuotesUpdated)
      quotes.startUpdating

      peer.addWindowListener(new WindowAdapter{
        def windowClosing(e : WindowEvent){
            self.setVisible(false)
        }
      })

      pack

Answer 1

最简单的方法是:

final JFrame frame=...;

....

frame.setDefaultCloseOperation(JFrame.HIDE_ON_CLOSE);

或者，您可以通过添加 WindowAdapter 来获得相同的结果。覆盖 windowClosed(...)并在那里打电话 setVisible(false)在 JFrame ) 像这样:

...

 frame.addWindowListener(new WindowAdapter() {
    @Override
  public void windowClosing(WindowEvent evt) {
    frame.setVisible(false);
  }
});