麻烦耽误大家的宝贵时间 帮忙给一个新手解决一个可能在你们看来比较弱的问题
我是这么做的 但是出现问题:
用的是GridBagLayout要在一个容器上加2个Button b1和b2分成四个格子 最后的要求是 b1占用(0,0)和(0,1) 而b2只占用(1,0)格.在没有设置两个button的weightx,weighty之前 是正确的位置 但是当我给b2设置了weighty之后 b2就一下占用了2格了(1,0)和(1,1)请问怎么做才能让b2只占用(1,0)格 而且也能随着Frame的大小 而上下左右 相应变化呢?我的代码是这样的:
import java.awt.*;public class GridBag_t1
{
public static void main(String argv[])
{
Frame f =new Frame("Oh");
f.setLayout(new GridBagLayout());
Button b1 = new Button("b1");
Button b2 = new Button("b2");
GridBagConstraints cons = new GridBagConstraints();
cons.gridx=0;
cons.gridy=0;
cons.gridwidth = 1;
cons.gridheight = 2;
cons.weightx = 0.8;
cons.weighty = 0.8;
cons.anchor = GridBagConstraints.CENTER;
cons.fill = GridBagConstraints.BOTH;
cons.insets = new Insets(5,5,5,5);
f.add(b1,cons);
cons.gridx=1;
cons.gridy=0;
cons.gridheight =1;
cons.fill = GridBagConstraints.BOTH;
cons.anchor = GridBagConstraints.CENTER;
cons.weightx = 0.2;
cons.weighty = 0.2;
cons.insets = new Insets(5,5,5,5);
f.add(b2,cons);
f.setSize(300,200);
f.setVisible(true);
}
}
import java.awt.GridBagLayout;
import java.awt.Insets;import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.JPanel;public class Test extends JFrame { private static final long serialVersionUID = -2397593626990759111L; private JPanel pane = null; private JButton b_1 = null, b_2 = null; private int gridx, gridy, gridwidth, gridheight, anchor, fill, ipadx, ipady; private double weightx, weighty; private Insets insert = null; private GridBagLayout gbl = null; private GridBagConstraints gbc = null; public Test() {
super("Test");
pane = new JPanel();
b_1 = new JButton("B_1");
b_2 = new JButton("B_2");
gbl = new GridBagLayout();
pane.setLayout(gbl);
gridx = 0; // X0
gridy = 0; // Y0
gridwidth = 1; // 横占一个单元格
gridheight = 2; // 列占两个单元格
weightx = 1.0; // 当窗口放大时,长度随之放大
weighty = 1.0; // 当窗口放大时,高度随之放大
anchor = GridBagConstraints.NORTH; // 当组件没有空间大时,使组件处在北部
fill = GridBagConstraints.BOTH; // 当有剩余空间时,填充空间
insert = new Insets(0, 0, 0, 0); // 组件彼此的间距
ipadx = 0; //组件内部填充空间,即给组件的最小宽度添加多大的空间
ipady = 0; //组件内部填充空间,即给组件的最小高度添加多大的空间
gbc = new GridBagConstraints(gridx, gridy, gridwidth, gridheight, weightx, weighty, anchor, fill, insert, ipadx, ipady);
gbl.setConstraints(b_1, gbc);
pane.add(b_1);
gridx = 1; // X1
gridy = 0; // Y0
gridwidth = 1; // 横占一个单元格
gridheight = 1; // 列占一个单元格
weightx = 1.0; // 当窗口放大时,长度随之放大
weighty = 1.0; // 当窗口放大时,高度随之放大
anchor = GridBagConstraints.NORTH; // 当组件没有空间大时,使组件处在北部
fill = GridBagConstraints.BOTH; // 当格子有剩余空间时,填充空间
insert = new Insets(0, 0, 0, 0); // 组件彼此的间距
ipadx = 0; //组件内部填充空间,即给组件的最小宽度添加多大的空间
ipady = 0; //组件内部填充空间,即给组件的最小高度添加多大的空间
gbc = new GridBagConstraints(gridx, gridy, gridwidth, gridheight, weightx, weighty, anchor, fill, insert, ipadx, ipady);
gbl.setConstraints(b_2, gbc);
pane.add(b_2);
// 下面是一个临时的填充面板,否则B_2所在的格子将把本格子挤掉
gridx = 1; // X1
gridy = 1; // Y1
gridwidth = 1; // 横占一个单元格
gridheight = 1; // 列占一个单元格
weightx = 1.0; // 当窗口放大时,长度随之放大
weighty = 1.0; // 当窗口放大时,高度随之放大
anchor = GridBagConstraints.NORTH; // 当组件没有空间大时,使组件处在北部
fill = GridBagConstraints.BOTH; // 当格子有剩余空间时,填充空间
insert = new Insets(0, 0, 0, 0); // 组件彼此的间距
ipadx = 0; //组件内部填充空间,即给组件的最小宽度添加多大的空间
ipady = 0; //组件内部填充空间,即给组件的最小高度添加多大的空间
gbc = new GridBagConstraints(gridx, gridy, gridwidth, gridheight, weightx, weighty, anchor, fill, insert, ipadx, ipady);
JPanel tempPane = new JPanel();
gbl.setConstraints(tempPane, gbc);
pane.add(tempPane); this.getContentPane().add(pane);
this.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
this.setSize(300, 200);
this.setVisible(true);
} public static void main(String args[]) {
new Test();
}}