问题描述

创建对话框最简单的方法是什么:

What would be the easiest way for creating a dialog:

• 在一个窗口中，我提供信封寻址数据，同时从大小列表中设置字体类型
• 单击确定"后，在同一窗口或下一个窗口中，我可以预览使用给定名称的信封外观，并使用选定的字体大小

它应该类似于:

替代文字 http://img15.imageshack.us/img15/7355/lab10aa.gif

我应该使用 Jdialog 吗?还是 JOptionPane 就足够了?下一步将是选择字体和背景的颜色，所以我必须牢记这一点.

Should I use Jdialog? Or will JOptionPane will be enough? The next step will be to choose color of font and background so I must keep that in mind.

推荐答案

如果需要使用JOptionPane:

If you need to use JOptionPane :

import java.awt.*;
import javax.swing.*;

public class Main extends JFrame {

    private static JTextField nameField = new JTextField(20);
    private static JTextField surnameField = new JTextField();
    private static JTextField addr1Field = new JTextField();
    private static JTextField addr2Field = new JTextField();
    private static JComboBox sizes = new JComboBox(new String[] { "small", "medium", "large", "extra-large" });

    public Main(){
        JPanel mainPanel = new JPanel();
        mainPanel.setLayout(new BoxLayout(mainPanel, BoxLayout.Y_AXIS));
        getContentPane().add(mainPanel);

        JPanel addrPanel = new JPanel(new GridLayout(0, 1));
        addrPanel.setBorder(BorderFactory.createTitledBorder("Receiver"));
        addrPanel.add(new JLabel("Name"));
        addrPanel.add(nameField);
        addrPanel.add(new JLabel("Surname"));
        addrPanel.add(surnameField);
        addrPanel.add(new JLabel("Address 1"));
        addrPanel.add(addr1Field);
        addrPanel.add(new JLabel("Address 2"));
        addrPanel.add(addr2Field);
        mainPanel.add(addrPanel);
        mainPanel.add(new JLabel(" "));
        mainPanel.add(sizes);

        String[] buttons = { "OK", "Cancel"};

        int c = JOptionPane.showOptionDialog(
                null,
                mainPanel,
                "My Panel",
                JOptionPane.DEFAULT_OPTION,
                JOptionPane.PLAIN_MESSAGE,
                null,
                buttons,
                buttons[0]
         );

        if(c ==0){
            new Envelope(nameField.getText(), surnameField.getText(), addr1Field.getText()
                    , addr2Field.getText(), sizes.getSelectedIndex());
        }

        setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        pack();
        setVisible(true);
    }

    public static void main(String[] args) {
        new Main();
    }
}

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