我有2个JPanels(LeftPanel和RightPanel)。
RightPanel有4个JRadioButtons,其中一个是通过设置setSelected(true)
来选择的。
我的要求是以只读模式显示RightPanel。
你能帮我解决一下这个问题吗?
JPanel RightPanel=new JPanel();
RightPanel.removeMouseListener(null);
示例代码会有所帮助。
答案 0 :(得分:3)
我建议你看看JLayer
,你可以自己消费所有活动。看一下教程How to Decorate Components with the JLayer Class。您需要Java 7+才能使用此类。
简单示例:
import java.awt.AWTEvent;
import java.awt.event.KeyEvent;
import java.awt.event.MouseEvent;
import javax.swing.JCheckBox;
import javax.swing.JComponent;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JLayer;
import javax.swing.JPanel;
import javax.swing.plaf.LayerUI;
public class Test {
public static void main(String args []){
JFrame frame = new JFrame();
frame.setTitle("Test checkbox");
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
JPanel panel = new JPanel();
panel.add(new JLabel("Test checkbox"));
JCheckBox checkbox = new JCheckBox();
LayerUI<JComponent> layerUI = new MyLayerUISubclass();
JLayer<JComponent> jlayer = new JLayer<>(checkbox, layerUI);
panel.add (jlayer);
frame.add(panel);
frame.pack();
frame.setVisible(true);
}
static class MyLayerUISubclass extends LayerUI<JComponent>{
@Override
public void installUI(JComponent c) {
super.installUI(c);
JLayer jlayer = (JLayer)c;
jlayer.setLayerEventMask(
AWTEvent.MOUSE_EVENT_MASK |
AWTEvent.KEY_EVENT_MASK
);
}
@Override
public void uninstallUI(JComponent c) {
JLayer jlayer = (JLayer)c;
jlayer.setLayerEventMask(0);
super.uninstallUI(c);
}
@Override
protected void processMouseEvent(MouseEvent e, JLayer l) {
e.consume();
}
@Override
protected void processKeyEvent(KeyEvent e,
JLayer<? extends JComponent> l) {
e.consume();
}
}
}
答案 1 :(得分:2)
最简单的选择是对setEnabled(false);
内的所有组件执行JPanel
。您还可以将setEditable(false);
用于JTextField
,JTextArea
,JEditorPanel
等文字组件。