Question

此外，现在每当我点击右上角的“X”按钮时，对话框的行为就像我点击了OK（在消息上）或YES（在问题上）。当用户点击X时，我想要DO_Nothing。

在下面的代码中，当我点击对话框中的X时，会弹出'eat！'。显然，X表现为“是”选项，它不应该。

int c =JOptionPane.showConfirmDialog(null, "Are you hungry?", "1", JOptionPane.YES_NO_OPTION);
if(c==JOptionPane.YES_OPTION){
JOptionPane.showMessageDialog(null, "eat!", "Order",JOptionPane.PLAIN_MESSAGE);
}
else {JOptionPane.showMessageDialog(null, "ok cool", "Order",JOptionPane.PLAIN_MESSAGE);}

Answer 1

更改为显示如何忽略每个OP澄清问题的对话框上的取消按钮：

JOptionPane pane = new JOptionPane("Are you hungry?", JOptionPane.QUESTION_MESSAGE, JOptionPane.YES_NO_OPTION);

JDialog dialog = pane.createDialog("Title");
dialog.addWindowListener(new WindowAdapter() {
    public void windowClosing(WindowEvent evt) {
    }
});
dialog.setContentPane(pane);
dialog.setDefaultCloseOperation(JDialog.DO_NOTHING_ON_CLOSE);
dialog.pack();

dialog.setVisible(true);
int c = ((Integer)pane.getValue()).intValue();

if(c == JOptionPane.YES_OPTION) {
  JOptionPane.showMessageDialog(null, "eat!", "Order",JOptionPane.PLAIN_MESSAGE);
}
else if (c == JOptionPane.NO_OPTION) {
  JOptionPane.showMessageDialog(null, "ok cool", "Order",JOptionPane.PLAIN_MESSAGE);
}

Answer 2

你不能通过通常的JOptionPane.show *方法做你想做的事。

你必须做这样的事情：

public static int showConfirmDialog(Component parentComponent,
    Object message, String title, int optionType)
{
    JOptionPane pane = new JOptionPane(message, JOptionPane.QUESTION_MESSAGE,
        optionType);
    final JDialog dialog = pane.createDialog(parentComponent, title);
    dialog.setVisible(false) ;
    dialog.setLocationRelativeTo(parentComponent);
    dialog.setDefaultCloseOperation(javax.swing.WindowConstants.DO_NOTHING_ON_CLOSE);
    dialog.setModal(true);
    dialog.setVisible(true) ;
    dialog.dispose();
    Object o = pane.getValue();
    if (o instanceof Integer) {
        return (Integer)o;
    }
    return JOptionPane.CLOSED_OPTION;
}

实际禁用关闭按钮的行是：

dialog.setDefaultCloseOperation(javax.swing.WindowConstants.DO_NOTHING_ON_CLOSE);

如何在JOptionPane对话框上驯服X？

2 个答案: