setenabled (false)没有禁用按钮输入。

I have the following two classes:

我有以下两门课:

# 1

public class LobbyView extends JPanel
{       

    private final JButton sendGameRequestButton = new JButton();

    public JButton getSendGameRequestButton()
    {
        return sendGameRequestButton;
    }

    LobbyView()
    {
        sendGameRequestButton.setPreferredSize(new Dimension(15, 20));
        sendGameRequestButton.setText("Send game request");
        sendGameRequestButton.addMouseListener(new LobbyListener(this));
        sendGameRequestButton.setEnabled(false);
    }
}

# 2

public class LobbyListener implements MouseListener
{
    LobbyView lobbyView;

public LobbyListener(LobbyView sentLobbyView)
{
    lobbyView = sentLobbyView;
}

@Override
public void mouseClicked(MouseEvent e)
{
    if (e.getButton() == 1)
    {      
        if (e.getSource() == lobbyView.getSendGameRequestButton())
        {
            System.out.println("You pushed the disabled button");
        }
    }
}

Even though I disabled the JButton in the LobbyView constructor, I can still click it and get the message "You pushed the disabled button".

即使我禁用了游标视图构造函数中的JButton，我仍然可以单击它并获取“您按下禁用按钮”的消息。

Does component.setEnabled(false) actually DISABLE a component, or just gray it out to make it LOOK disabled?

组件。setenabled (false)实际上是禁用组件，还是只是让它看起来是禁用的?

1 个解决方案

#1

Even though I disabled the JButton in the LobbyView constructor, I can still click it

即使我禁用了游标视图构造函数中的JButton，我仍然可以单击它。

That is correct. You should NOT be using a MouseListner. The MouseListener works independent of the state of the button.

这是正确的。您不应该使用MouseListner。MouseListener独立于按钮的状态。

Instead you should be using an ActionListener. Read the section from the Swing tutorial on How to Use Buttons for more information. Or there is also a section on How to Write an Action Listener.

相反，应该使用ActionListener。阅读Swing教程中的章节，了解如何使用按钮获取更多信息。或者也有一节关于如何编写一个动作监听器。

#1