一个网袋布局（GridBagLayout）的问题

Question

Insets insets = new Insets(5,5 ,5 , 5);
panel.add(a, new GridBagConstraints(0, 0, 1, 4, 1.0, 1.0, GridBagConstraints.CENTER, GridBagConstraints.BOTH, insets, 0, 0));
panel.add(b, new GridBagConstraints(1, 0, 1, 1, 1.0, 1.0, GridBagConstraints.CENTER, GridBagConstraints.BOTH, insets, 0, 0));
panel.add(c, new GridBagConstraints(2, 0, 1, 1, 1.0, 1.0, GridBagConstraints.CENTER, GridBagConstraints.BOTH, insets, 0, 0));
panel.add(d, new GridBagConstraints(3, 0, 1, 1, 1.0, 1.0, GridBagConstraints.CENTER, GridBagConstraints.BOTH, insets, 0, 0));
panel.add(e, new GridBagConstraints(4, 0, 1, 1, 1.0, 1.0, GridBagConstraints.CENTER, GridBagConstraints.BOTH, insets, 0, 0));

Answer 1

这东东功能强,但不是很好用,特别是在不用IDE开发时,昨天为了一个布局折腾了一上午才搞好,看到它就头大!

Answer 2

应该用JBuilder来创建就不用发愁布局的问题了

Answer 3

package com.boasoft;import java.awt.Button;
import java.awt.Color;
import java.awt.Event;
import java.awt.Frame;
import java.awt.GridBagConstraints;
import java.awt.GridBagLayout;
import java.awt.Insets;
import java.awt.Panel;public class RadioButtonDemo extends Frame
{
    public RadioButtonDemo()
    {
        setTitle("网袋布局");
        GridBagLayout layout=new GridBagLayout();
       
        Panel p=new Panel(layout);
        GridBagConstraints cons=new GridBagConstraints();
        cons.gridx=100;
        cons.gridy=135; // modified here 
        cons.gridwidth=2;
        cons.gridheight=4;
        cons.weightx=0;
        cons.weighty=GridBagConstraints.RELATIVE;
        Button b1=new Button("A");
        layout.setConstraints(b1,cons);
        p.add(b1);
        
        cons.gridx=200;
        cons.gridy=100;
        cons.gridwidth=1;
        cons.gridheight=1;
        cons.weightx=0;
        cons.weighty=0;
        Button b2=new Button("B");
        layout.setConstraints(b2,cons);
        p.add(b2);
        
        cons.gridx=200;
        cons.gridy=125;
        cons.gridwidth=1;
        cons.gridheight=1;
        cons.weightx=0;
        cons.weighty=0;
        Button b3=new Button("C");
        layout.setConstraints(b3,cons);
        p.add(b3);
        
        cons.gridx=200;
        cons.gridy=150;
        cons.gridwidth=1;
        cons.gridheight=1;
        cons.weightx=0;
        cons.weighty=0;
        Button b4=new Button("D");
        layout.setConstraints(b4,cons);
        p.add(b4);
        
        cons.gridx=200;
        cons.gridy=175;
        cons.gridwidth=1;
        cons.gridheight=1;
        cons.weightx=0;
        cons.weighty=0;
        Button b5=new Button("E");
        layout.setConstraints(b5,cons);
        p.add(b5);
                
        add("Center",p);
        
        
        
        
    }
    public boolean handleEvent(Event evt)
    {
        if(evt.id==Event.WINDOW_DESTROY)System.exit(0);
        return super.handleEvent(evt);
        
    }
    
    public static void main(String[] args)
    {
        RadioButtonDemo f=new RadioButtonDemo();
        f.resize(600,500);
        f.setBackground(Color.white);
        f.show();
    }
}
//是要这个效果吗?建议你使用JPanel中来布局,就像HTML使用<table>来布局一样

Answer 4

JBuilder是好用,但公司现在不用这东西,用EditPlus + JDK,就是在做GUI时比较痛苦

Answer 5

这个是你想要的效果啊!测试过没问题的import javax.swing.*;
import java.awt.*;public class test {
    
    public static void main(String args[]) {
JFrame f = new JFrame(" GridBagLayout Simples");
        GridBagConstraints c ;        f.getContentPane().setLayout(new GridBagLayout());        f.addWindowListener(new java.awt.event.WindowAdapter() {
            public void windowClosing(java.awt.event.WindowEvent evt) {
        System.exit(0);
            }
        });        c = new GridBagConstraints();
        c.gridx = 0;
        c.gridy = 0;
        c.gridheight = 4;
        c.fill = GridBagConstraints.VERTICAL;
        f.getContentPane().add(new JButton("A"), c);        c = new GridBagConstraints();
        c.gridx = 1;
        c.gridy = 0;
        f.getContentPane().add(new JButton("B"), c);        c = new GridBagConstraints();
        c.gridx = 1;
        c.gridy = 1;
        f.getContentPane().add(new JButton("C"), c);        c = new GridBagConstraints();
        c.gridx = 1;
        c.gridy = 2;
        f.getContentPane().add(new JButton("E"), c);        c = new GridBagConstraints();
        c.gridx = 1;
        c.gridy = 3;
        f.getContentPane().add(new JButton("E"), c);
         
f.pack();
f.show();
    }
}

Answer 6

bovy(★ 天道酬勤 ★) 你的我试过了，好像不行，mail25(随风飘) 的可以。难道awt就实现不了吗？
继续等待.....

Answer 7

把添加组件的方法改一下就好了
import java.awt.*;public class test {
    
    public static void main(String args[]) {
 Frame f = new  Frame(" GridBagLayout Simples");
        GridBagConstraints c ;        f.setLayout(new GridBagLayout());        f.addWindowListener(new java.awt.event.WindowAdapter() {
            public void windowClosing(java.awt.event.WindowEvent evt) {
        System.exit(0);
            }
        });        c = new GridBagConstraints();
        c.gridx = 0;
        c.gridy = 0;
        c.gridheight = 4;
        c.fill = GridBagConstraints.VERTICAL;
        f.add(new  Button("A"), c);        c = new GridBagConstraints();
        c.gridx = 1;
        c.gridy = 0;
        f.add(new  Button("B"), c);        c = new GridBagConstraints();
        c.gridx = 1;
        c.gridy = 1;
        f.add(new  Button("C"), c);        c = new GridBagConstraints();
        c.gridx = 1;
        c.gridy = 2;
        f.add(new  Button("E"), c);        c = new GridBagConstraints();
        c.gridx = 1;
        c.gridy = 3;
        f.add(new  Button("E"), c);
         
f.pack();
f.show();
    }
}