swt顶用什么做类似qq聊天框

swt中用什么做类似qq聊天框
swt中用什么做类似qq聊天框（中间可以输入文字和图片，并可以粘贴复制），求给思路或源码。本人邮箱：472852263@qq.com！别说lumaQQ有这个，我看过了，没找到。。最好是自己理解的。。。万分感谢！！
------解决方案--------------------
swing实现的三个类：JTextPane StyledDocument ImageIcon
理解下面代码（可直接执行），是告诉如何显示多媒体文本和图片的

import java.awt.BorderLayout;
import java.awt.Cursor;
import java.awt.Dimension;
import java.awt.GridBagConstraints;
import java.awt.GridBagLayout;
import java.awt.Insets;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;

import javax.swing.BorderFactory;
import javax.swing.ImageIcon;
import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JPanel;
import javax.swing.JScrollPane;
import javax.swing.JTextPane;
import javax.swing.SwingUtilities;
import javax.swing.UIManager;
import javax.swing.text.BadLocationException;
import javax.swing.text.Style;
import javax.swing.text.StyleConstants;
import javax.swing.text.StyleContext;
import javax.swing.text.StyledDocument;

public class Demo extends JPanel implements ActionListener {
    private String newline = "\n";

    protected JLabel actionLabel;

    public Demo() {
        setLayout(new BorderLayout());



        //Create a label to put messages during an action event.
        actionLabel = new JLabel("Type text in a field and press Enter.");
        actionLabel.setBorder(BorderFactory.createEmptyBorder(10,0,0,0));

        //Lay out the text controls and the labels.
        JPanel textControlsPane = new JPanel();
        GridBagLayout gridbag = new GridBagLayout();
        GridBagConstraints c = new GridBagConstraints();
        textControlsPane.setLayout(gridbag);

        c.gridwidth = GridBagConstraints.REMAINDER; //last
        c.anchor = GridBagConstraints.WEST;
        c.weightx = 1.0;
        textControlsPane.add(actionLabel, c);
        textControlsPane.setBorder(
                BorderFactory.createCompoundBorder(
                                BorderFactory.createTitledBorder("Text Fields"),
                                BorderFactory.createEmptyBorder(5,5,5,5)));

        //Create a text pane.
        JTextPane textPane = createTextPane();
        JScrollPane paneScrollPane = new JScrollPane(textPane);
        paneScrollPane.setVerticalScrollBarPolicy(
                        JScrollPane.VERTICAL_SCROLLBAR_ALWAYS);
        paneScrollPane.setPreferredSize(new Dimension(250, 155));
        paneScrollPane.setMinimumSize(new Dimension(10, 10));

        //Put everything together.
        add(paneScrollPane, BorderLayout.LINE_END);
    }


    public void actionPerformed(ActionEvent e) {
    }


    private JTextPane createTextPane() {
        String[] initString =
                { "This is an editable JTextPane, ",            //regular
                  "another ",                                   //italic
                  "styled ",                                    //bold