这相当容易实现。在这里找到链接文本
import javax.swing.*;import java.awt.*;import java.awt.event.*;import javax.swing.table.*;import java.util.*;public class JComboCheckBox extends JComboBox { public JComboCheckBox() { addStuff(); } public JComboCheckBox(JCheckBox[] items) { super(items); addStuff(); } public JComboCheckBox(Vector items) { super(items); addStuff(); } public JComboCheckBox(ComboBoxModel aModel) { super(aModel); addStuff(); } private void addStuff() { setRenderer(new ComboBoxRenderer()); addActionListener(new ActionListener() { public void actionPerformed(ActionEvent ae) { itemSelected(); } }); } private void itemSelected() { if (getSelectedItem() instanceof JCheckBox) { JCheckBox jcb = (JCheckBox)getSelectedItem(); jcb.setSelected(!jcb.isSelected()); } } class ComboBoxRenderer implements ListCellRenderer { private JLabel defaultLabel; public ComboBoxRenderer() { setOpaque(true); } public Component getListCellRendererComponent(JList list, Object value, int index, boolean isSelected, boolean cellHasFocus) { if (value instanceof Component) { Component c = (Component)value; if (isSelected) { c.setBackground(list.getSelectionBackground()); c.setForeground(list.getSelectionForeground()); } else { c.setBackground(list.getBackground()); c.setForeground(list.getForeground()); } return c; } else { if (defaultLabel==null) defaultLabel = new JLabel(value.toString()); else defaultLabel.setText(value.toString()); return defaultLabel; } } }}
