用JBuilder 9 开发一个文本编辑器

来源：yesky 作者：务实出处：巧巧读书 2006-01-28 进入讨论组

　　3、TextEditFrame_AboutBox.java的源程序代码：

package texteditor;
import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
import javax.swing.border.*;
/**
* ＜p＞Title： TextEditor＜/p＞
* ＜p＞Description： This is a study programme＜/p＞
* ＜p＞Copyright： Copyright (c) 2004＜/p＞
* ＜p＞Company： ghq＜/p＞
* @author ghq
* @version 1.0
*/
public class TextEditFrame_AboutBox extends JDialog implements
ActionListener {
　JPanel panel1 = new JPanel();
　JPanel panel2 = new JPanel();
　JPanel insetsPanel1 = new JPanel();
　JPanel insetsPanel2 = new JPanel();
　JPanel insetsPanel3 = new JPanel();
　JButton button1 = new JButton();
　JLabel imageControl1 = new JLabel();
　ImageIcon imageIcon;
　JLabel label1 = new JLabel();
　JLabel label2 = new JLabel();
　JLabel label3 = new JLabel();
　JLabel label4 = new JLabel();
　BorderLayout borderLayout1 = new BorderLayout();
　BorderLayout borderLayout2 = new BorderLayout();
　FlowLayout flowLayout1 = new FlowLayout();
　FlowLayout flowLayout2 = new FlowLayout();
　GridLayout gridLayout1 = new GridLayout();
　String product = "TextEditor";
　String version = "1.0";
　String copyright = "Copyright (c) 2002";
　String comments = "This is a study programme";
　//Construct the frame
　public TextEditFrame_AboutBox(Frame parent) {
　　super(parent);
　　enableEvents(AWTEvent.WINDOW_EVENT_MASK);
　　try {
　　　jbInit();
　　}
　　catch(Exception e) {
　　　e.printStackTrace();
　　}
　　pack();
　}
　//Component initialization
　private void jbInit() throws Exception {
　　//imageLabel.setIcon(new ImageIcon(TextEditFrame_AboutBox.class.getResource("[Your Image]")));
　　this.setTitle("About");
　　setResizable(false);
　　panel1.setLayout(borderLayout1);
　　panel2.setLayout(borderLayout2);
　　insetsPanel1.setLayout(flowLayout1);
　　insetsPanel2.setLayout(flowLayout1);
　　insetsPanel2.setBorder(new EmptyBorder(10, 10, 10, 10));
　　gridLayout1.setRows(4);
　　gridLayout1.setColumns(1);
　　label1.setText(product);
　　label2.setText(version);
　　label3.setText(copyright);
　　label4.setText(comments);
　　insetsPanel3.setLayout(gridLayout1);
　　insetsPanel3.setBorder(new EmptyBorder(10, 60, 10, 10));
　　button1.setText("Ok");
　　button1.addActionListener(this);
　　insetsPanel2.add(imageControl1, null);
　　panel2.add(insetsPanel2, BorderLayout.WEST);
　　this.getContentPane().add(panel1, null);
　　insetsPanel3.add(label1, null);
　　insetsPanel3.add(label2, null);
　　insetsPanel3.add(label3, null);
　　insetsPanel3.add(label4, null);
　　panel2.add(insetsPanel3, BorderLayout.CENTER);
　　insetsPanel1.add(button1, null);
　　panel1.add(insetsPanel1, BorderLayout.SOUTH);
　　panel1.add(panel2, BorderLayout.NORTH);
}
//Overridden so we can exit when windows is cancel
protected void processWindowEvent(WindowEvent e) {
　if (e.getID() == WindowEvent.WINDOW_CLOSING) {
　　cancel();
　}
　super.processWindowEvent(e);
}
void cancel() {
　dispose();
}
// Help|About de button is used action performed
public void actionPerformed(ActionEvent e) {
　if (e.getSource() == button1) {
　　cancel();
　}
}
}

　　说明：上面的这段程序主要是构建Help菜单的AboutBox 对话框，显示product、version 和comments 等内容。
　
　　至此我们已完成文本编辑器所有的菜单及代码设计等工作，在 jbuilder9 环境下编译运行会出现如下的Text Editor窗口：