谁你能告诉我原因吗？

[simon1006]

//
首先，在JFrame 显示出来的时候，为什么bottom.setDividerLocation(0.5);
显示不出来正确的位置，当点击按钮
JButton b=new JButton("real divider");
就能正确显示分割线的位置
代码如下：
//
package swingTest;
import java.awt.*;
import javax.swing.*;
import java.awt.event.ActionListener;
import java.awt.event.ActionEvent;

/**
* <p>Title: </p>
* <p>Description: </p>
* <p>Copyright: Copyright (c) 2006</p>
* <p>Company: </p>
* @author not attributable
* @version 1.0
*/
public class ScrollPaneTest {
public static void main(String[] arg){
JFrame f=new JFrame();
f.setSize(600,500);
f.setLocation(250,250);
Container c= f.getContentPane();
c.setLayout(new BorderLayout());


final JSplitPane left=new JSplitPane(JSplitPane.VERTICAL_SPLIT,new JPanel(),new JPanel());

JPanel p1=new JPanel();
JButton b=new JButton("real divider");
p1.add(b);

JPanel p2=new JPanel();
JPanel p3=new JPanel();
final JSplitPane bottom=new JSplitPane(JSplitPane.VERTICAL_SPLIT,p2,p3);
final JSplitPane right=new JSplitPane(JSplitPane.VERTICAL_SPLIT,p1,bottom);
JPanel leftPanel=new JPanel(new BorderLayout());
// leftPanel.add(left,BorderLayout.CENTER);
final JSplitPane top=new JSplitPane(JSplitPane.HORIZONTAL_SPLIT,left,right);
c.add(top,BorderLayout.CENTER);

f.setVisible(true);

top.setDividerLocation(0.7);
right.setDividerLocation(0.3);
bottom.setDividerLocation(0.5);
left.setDividerLocation(0.8);
b.addActionListener(new ActionListener(){
public void actionPerformed(ActionEvent e) {
top.setDividerLocation(0.7);
right.setDividerLocation(0.3);
bottom.setDividerLocation(0.5);
left.setDividerLocation(0.8);
}
});


}
}

[dashi]

顶

[simon1006]

发错地方了，呵呵 转到GUI