Java 如何在具有灵活宽度的情况下沿y轴将组件动态添加到JPanel？
在下面的代码中，我希望随着容纳NotesPanel的JFrame的大小调整，NotesPanel中的面板也可以调整大小 可运行CSSE：Java 如何在具有灵活宽度的情况下沿y轴将组件动态添加到JPanel？,java,swing,Java,Swing,在下面的代码中，我希望随着容纳NotesPanel的JFrame的大小调整，NotesPanel中的面板也可以调整大小 可运行CSSE： package com.protocase.notes.views; import com.protocase.notes.controller.NotesController; import com.protocase.notes.model.Note; import com.protocase.notes.model.User; import java.
package com.protocase.notes.views;
import com.protocase.notes.controller.NotesController;
import com.protocase.notes.model.Note;
import com.protocase.notes.model.User;
import java.awt.Color;
import java.awt.Component;
import java.awt.Dimension;
import java.util.Date;
import javax.swing.BoxLayout;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JPanel;
import javax.swing.JScrollPane;
import javax.swing.JTextArea;
import javax.swing.border.BevelBorder;
/**
* @author dah01
*/
public class NotesPanel extends JPanel{
public static void main(String[] args) {
JFrame f= new JFrame();
f.setSize(500,500);
Note note = new Note();
User u = new User();
note.setCreator(u);
note.setLastEdited(u);
note.setDateCreated(new Date());
JPanel panel = new JPanel();
panel.add(new NotesPanel(note, null));
panel.add(new NotesPanel(note, null));
panel.setBackground(Color.red);
f.setContentPane(panel);
f.setVisible(true);
}
// <editor-fold defaultstate="collapsed" desc="Attributes">
private Note note;
private NotesController controller;
//</editor-fold>
// <editor-fold defaultstate="collapsed" desc="Getters N' Setters">
public NotesController getController() {
return controller;
}
public void setController(NotesController controller) {
this.controller = controller;
}
public Note getNote() {
return note;
}
public void setNote(Note note) {
this.note = note;
}
//</editor-fold>
// <editor-fold defaultstate="collapsed" desc="Constructor">
/**
* Sets up a note panel that shows everything about the note.
* @param note
*/
public NotesPanel(Note note, NotesController controller){
// -- Setup the layout manager.
this.setBackground(new Color(199, 187, 192));
this.setLayout(new BoxLayout(this,BoxLayout.Y_AXIS));
this.setBorder(new BevelBorder(BevelBorder.RAISED));
// -- Setup the creator section.
JLabel creatorLabel = new JLabel("Note by "+note.getCreator()+ " @ "+note.getDateCreated());
creatorLabel.setAlignmentX(JLabel.LEFT_ALIGNMENT);
// -- Setup the notes area.
JTextArea notesContentsArea = new JTextArea(note.getContents());
notesContentsArea.setEditable(false);
notesContentsArea.setLineWrap(true);
notesContentsArea.setWrapStyleWord(true);
JScrollPane scrollPane = new JScrollPane(notesContentsArea);
scrollPane.setAlignmentX(JScrollPane.LEFT_ALIGNMENT);
// -- Setup the edited by label.
JLabel editorLabel = new JLabel(" -- Last edited by "+note.getLastEdited() +" at "+note.getDateModified());
editorLabel.setAlignmentX(Component.LEFT_ALIGNMENT);
// -- Add everything to the view.
Dimension wD = new Dimension(Short.MAX_VALUE, Short.MAX_VALUE);
scrollPane.setMaximumSize(wD);
this.setBackground(Color.yellow);
this.setMaximumSize(wD);
this.add(creatorLabel);
this.add(scrollPane);
this.add(editorLabel);
}
//</editor-fold>
}
编辑：这是BoxLayout的一个问题，设置最大大小似乎没有任何好处。为了测试它，我稍微更改了您的代码
import java.awt.*;
import javax.swing.*;
import javax.swing.border.*;
/**
* @author dah01
*/
public class T {
public static void main(String[] args) {
JFrame f= new JFrame();
f.setSize(500,500);
f.add(new NotesPanel());
f.setVisible(true);
}
}
class NotesPanel extends JPanel{
public NotesPanel(){
// -- Setup the layout manager.
setBackground(new Color(199, 187, 192));
setLayout(new GridLayout());
// -- Setup the border for the notes pane.
this.setBorder(new EmptyBorder(8, 3, 8, 3));
// -- Setup the border for the notes pane.
JPanel panel = new JPanel();
panel.setLayout(new BoxLayout(panel,BoxLayout.Y_AXIS));
panel.setAlignmentX(JPanel.LEFT_ALIGNMENT);
panel.setBorder(new BevelBorder(BevelBorder.RAISED));
// -- Setup the creator section.
JLabel creatorLabel = new JLabel("Note by "+ " @ ");
creatorLabel.setAlignmentX(JLabel.LEFT_ALIGNMENT);
// -- Setup the notes area.
JTextArea notesContentsArea = new JTextArea("Lorem ipsum dolor sit amet, consetetur sadipscing elitr, sed diam nonumy eirmod tempor invidunt ut labore et dolore magna aliquyam erat, sed diam voluptua. At vero eos et accusam et justo duo dolores et ea rebum. Stet clita kasd gubergren, no sea takimata sanctus est Lorem ipsum dolor sit amet. Lorem ipsum dolor sit amet, consetetur sadipscing elitr, sed diam nonumy eirmod tempor invidunt ut labore et dolore magna aliquyam erat, sed diam voluptua. At vero eos et accusam et justo duo dolores et ea rebum. Stet clita kasd gubergren, no sea takimata sanctus est Lorem ipsum dolor sit amet.Lorem ipsum dolor sit amet, consetetur sadipscing elitr, sed diam nonumy eirmod tempor invidunt ut labore et dolore magna aliquyam erat, sed diam voluptua. At vero eos et accusam et justo duo dolores et ea rebum. Stet clita kasd gubergren, no sea takimata sanctus est Lorem ipsum dolor sit amet. Lorem ipsum dolor sit amet, consetetur sadipscing elitr, sed diam nonumy eirmod tempor invidunt ut labore et dolore magna aliquyam erat, sed diam voluptua. At vero eos et accusam et justo duo dolores et ea rebum. Stet clita kasd gubergren, no sea takimata sanctus est Lorem ipsum dolor sit amet.Lorem ipsum dolor sit amet, consetetur sadipscing elitr, sed diam nonumy eirmod tempor invidunt ut labore et dolore magna aliquyam erat, sed diam voluptua. At vero eos et accusam et justo duo dolores et ea rebum. Stet clita kasd gubergren, no sea takimata sanctus est Lorem ipsum dolor sit amet. Lorem ipsum dolor sit amet, consetetur sadipscing elitr, sed diam nonumy eirmod tempor invidunt ut labore et dolore magna aliquyam erat, sed diam voluptua. At vero eos et accusam et justo duo dolores et ea rebum. Stet clita kasd gubergren, no sea takimata sanctus est Lorem ipsum dolor sit amet.Lorem ipsum dolor sit amet, consetetur sadipscing elitr, sed diam nonumy eirmod tempor invidunt ut labore et dolore magna aliquyam erat, sed diam voluptua. At vero eos et accusam et justo duo dolores et ea rebum. Stet clita kasd gubergren, no sea takimata sanctus est Lorem ipsum dolor sit amet. Lorem ipsum dolor sit amet, consetetur sadipscing elitr, sed diam nonumy eirmod tempor invidunt ut labore et dolore magna aliquyam erat, sed diam voluptua. At vero eos et accusam et justo duo dolores et ea rebum. Stet clita kasd gubergren, no sea takimata sanctus est Lorem ipsum dolor sit amet.Lorem ipsum dolor sit amet, consetetur sadipscing elitr, sed diam nonumy eirmod tempor invidunt ut labore et dolore magna aliquyam erat, sed diam voluptua. At vero eos et accusam et justo duo dolores et ea rebum. Stet clita kasd gubergren, no sea takimata sanctus est Lorem ipsum dolor sit amet. Lorem ipsum dolor sit amet, consetetur sadipscing elitr, sed diam nonumy eirmod tempor invidunt ut labore et dolore magna aliquyam erat, sed diam voluptua. At vero eos et accusam et justo duo dolores et ea rebum. Stet clita kasd gubergren, no sea takimata sanctus est Lorem ipsum dolor sit amet.Lorem ipsum dolor sit amet, consetetur sadipscing elitr, sed diam nonumy eirmod tempor invidunt ut labore et dolore magna aliquyam erat, sed diam voluptua. At vero eos et accusam et justo duo dolores et ea rebum. Stet clita kasd gubergren, no sea takimata sanctus est Lorem ipsum dolor sit amet. Lorem ipsum dolor sit amet, consetetur sadipscing elitr, sed diam nonumy eirmod tempor invidunt ut labore et dolore magna aliquyam erat, sed diam voluptua. At vero eos et accusam et justo duo dolores et ea rebum. Stet clita kasd gubergren, no sea takimata sanctus est Lorem ipsum dolor sit amet.Lorem ipsum dolor sit amet, consetetur sadipscing elitr, sed diam nonumy eirmod tempor invidunt ut labore et dolore magna aliquyam erat, sed diam voluptua. At vero eos et accusam et justo duo dolores et ea rebum. Stet clita kasd gubergren, no sea takimata sanctus est Lorem ipsum dolor sit amet. Lorem ipsum dolor sit amet, consetetur sadipscing elitr, sed diam nonumy eirmod tempor invidunt ut labore et dolore magna aliquyam erat, sed diam voluptua. At vero eos et accusam et justo duo dolores et ea rebum. Stet clita kasd gubergren, no sea takimata sanctus est Lorem ipsum dolor sit amet.Lorem ipsum dolor sit amet, consetetur sadipscing elitr, sed diam nonumy eirmod tempor invidunt ut labore et dolore magna aliquyam erat, sed diam voluptua. At vero eos et accusam et justo duo dolores et ea rebum. Stet clita kasd gubergren, no sea takimata sanctus est Lorem ipsum dolor sit amet. Lorem ipsum dolor sit amet, consetetur sadipscing elitr, sed diam nonumy eirmod tempor invidunt ut labore et dolore magna aliquyam erat, sed diam voluptua. At vero eos et accusam et justo duo dolores et ea rebum. Stet clita kasd gubergren, no sea takimata sanctus est Lorem ipsum dolor sit amet.Lorem ipsum dolor sit amet, consetetur sadipscing elitr, sed diam nonumy eirmod tempor invidunt ut labore et dolore magna aliquyam erat, sed diam voluptua. At vero eos et accusam et justo duo dolores et ea rebum. Stet clita kasd gubergren, no sea takimata sanctus est Lorem ipsum dolor sit amet. Lorem ipsum dolor sit amet, consetetur sadipscing elitr, sed diam nonumy eirmod tempor invidunt ut labore et dolore magna aliquyam erat, sed diam voluptua. At vero eos et accusam et justo duo dolores et ea rebum. Stet clita kasd gubergren, no sea takimata sanctus est Lorem ipsum dolor sit amet.Lorem ipsum dolor sit amet, consetetur sadipscing elitr, sed diam nonumy eirmod tempor invidunt ut labore et dolore magna aliquyam erat, sed diam voluptua. At vero eos et accusam et justo duo dolores et ea rebum. Stet clita kasd gubergren, no sea takimata sanctus est Lorem ipsum dolor sit amet. Lorem ipsum dolor sit amet, consetetur sadipscing elitr, sed diam nonumy eirmod tempor invidunt ut labore et dolore magna aliquyam erat, sed diam voluptua. At vero eos et accusam et justo duo dolores et ea rebum. Stet clita kasd gubergren, no sea takimata sanctus est Lorem ipsum dolor sit amet.Lorem ipsum dolor sit amet, consetetur sadipscing elitr, sed diam nonumy eirmod tempor invidunt ut labore et dolore magna aliquyam erat, sed diam voluptua. At vero eos et accusam et justo duo dolores et ea rebum. Stet clita kasd gubergren, no sea takimata sanctus est Lorem ipsum dolor sit amet. Lorem ipsum dolor sit amet, consetetur sadipscing elitr, sed diam nonumy eirmod tempor invidunt ut labore et dolore magna aliquyam erat, sed diam voluptua. At vero eos et accusam et justo duo dolores et ea rebum. Stet clita kasd gubergren, no sea takimata sanctus est Lorem ipsum dolor sit amet.Lorem ipsum dolor sit amet, consetetur sadipscing elitr, sed diam nonumy eirmod tempor invidunt ut labore et dolore magna aliquyam erat, sed diam voluptua. At vero eos et accusam et justo duo dolores et ea rebum. Stet clita kasd gubergren, no sea takimata sanctus est Lorem ipsum dolor sit amet. Lorem ipsum dolor sit amet, consetetur sadipscing elitr, sed diam nonumy eirmod tempor invidunt ut labore et dolore magna aliquyam erat, sed diam voluptua. At vero eos et accusam et justo duo dolores et ea rebum. Stet clita kasd gubergren, no sea takimata sanctus est Lorem ipsum dolor sit amet.");
notesContentsArea.setEditable(false);
notesContentsArea.setLineWrap(true);
notesContentsArea.setWrapStyleWord(true);
JScrollPane scrollPane = new JScrollPane(notesContentsArea);
scrollPane.setAlignmentX(JScrollPane.LEFT_ALIGNMENT);
// -- Setup the edited by label.
JLabel editorLabel = new JLabel(" -- Last edited by "+" at ");
editorLabel.setAlignmentX(Component.LEFT_ALIGNMENT);
// -- Add everything to the view.
panel.add(creatorLabel);
panel.add(scrollPane);
panel.add(editorLabel);
this.add(panel);
}
//</editor-fold>
}
你想实现什么不同的目标 我对您的代码做了一些更改以测试它
import java.awt.*;
import javax.swing.*;
import javax.swing.border.*;
/**
* @author dah01
*/
public class T {
public static void main(String[] args) {
JFrame f= new JFrame();
f.setSize(500,500);
f.add(new NotesPanel());
f.setVisible(true);
}
}
class NotesPanel extends JPanel{
public NotesPanel(){
// -- Setup the layout manager.
setBackground(new Color(199, 187, 192));
setLayout(new GridLayout());
// -- Setup the border for the notes pane.
this.setBorder(new EmptyBorder(8, 3, 8, 3));
// -- Setup the border for the notes pane.
JPanel panel = new JPanel();
panel.setLayout(new BoxLayout(panel,BoxLayout.Y_AXIS));
panel.setAlignmentX(JPanel.LEFT_ALIGNMENT);
panel.setBorder(new BevelBorder(BevelBorder.RAISED));
// -- Setup the creator section.
JLabel creatorLabel = new JLabel("Note by "+ " @ ");
creatorLabel.setAlignmentX(JLabel.LEFT_ALIGNMENT);
// -- Setup the notes area.
JTextArea notesContentsArea = new JTextArea("Lorem ipsum dolor sit amet, consetetur sadipscing elitr, sed diam nonumy eirmod tempor invidunt ut labore et dolore magna aliquyam erat, sed diam voluptua. At vero eos et accusam et justo duo dolores et ea rebum. Stet clita kasd gubergren, no sea takimata sanctus est Lorem ipsum dolor sit amet. Lorem ipsum dolor sit amet, consetetur sadipscing elitr, sed diam nonumy eirmod tempor invidunt ut labore et dolore magna aliquyam erat, sed diam voluptua. At vero eos et accusam et justo duo dolores et ea rebum. Stet clita kasd gubergren, no sea takimata sanctus est Lorem ipsum dolor sit amet.Lorem ipsum dolor sit amet, consetetur sadipscing elitr, sed diam nonumy eirmod tempor invidunt ut labore et dolore magna aliquyam erat, sed diam voluptua. At vero eos et accusam et justo duo dolores et ea rebum. Stet clita kasd gubergren, no sea takimata sanctus est Lorem ipsum dolor sit amet. Lorem ipsum dolor sit amet, consetetur sadipscing elitr, sed diam nonumy eirmod tempor invidunt ut labore et dolore magna aliquyam erat, sed diam voluptua. At vero eos et accusam et justo duo dolores et ea rebum. Stet clita kasd gubergren, no sea takimata sanctus est Lorem ipsum dolor sit amet.Lorem ipsum dolor sit amet, consetetur sadipscing elitr, sed diam nonumy eirmod tempor invidunt ut labore et dolore magna aliquyam erat, sed diam voluptua. At vero eos et accusam et justo duo dolores et ea rebum. Stet clita kasd gubergren, no sea takimata sanctus est Lorem ipsum dolor sit amet. Lorem ipsum dolor sit amet, consetetur sadipscing elitr, sed diam nonumy eirmod tempor invidunt ut labore et dolore magna aliquyam erat, sed diam voluptua. At vero eos et accusam et justo duo dolores et ea rebum. Stet clita kasd gubergren, no sea takimata sanctus est Lorem ipsum dolor sit amet.Lorem ipsum dolor sit amet, consetetur sadipscing elitr, sed diam nonumy eirmod tempor invidunt ut labore et dolore magna aliquyam erat, sed diam voluptua. At vero eos et accusam et justo duo dolores et ea rebum. Stet clita kasd gubergren, no sea takimata sanctus est Lorem ipsum dolor sit amet. Lorem ipsum dolor sit amet, consetetur sadipscing elitr, sed diam nonumy eirmod tempor invidunt ut labore et dolore magna aliquyam erat, sed diam voluptua. At vero eos et accusam et justo duo dolores et ea rebum. Stet clita kasd gubergren, no sea takimata sanctus est Lorem ipsum dolor sit amet.Lorem ipsum dolor sit amet, consetetur sadipscing elitr, sed diam nonumy eirmod tempor invidunt ut labore et dolore magna aliquyam erat, sed diam voluptua. At vero eos et accusam et justo duo dolores et ea rebum. Stet clita kasd gubergren, no sea takimata sanctus est Lorem ipsum dolor sit amet. Lorem ipsum dolor sit amet, consetetur sadipscing elitr, sed diam nonumy eirmod tempor invidunt ut labore et dolore magna aliquyam erat, sed diam voluptua. At vero eos et accusam et justo duo dolores et ea rebum. Stet clita kasd gubergren, no sea takimata sanctus est Lorem ipsum dolor sit amet.Lorem ipsum dolor sit amet, consetetur sadipscing elitr, sed diam nonumy eirmod tempor invidunt ut labore et dolore magna aliquyam erat, sed diam voluptua. At vero eos et accusam et justo duo dolores et ea rebum. Stet clita kasd gubergren, no sea takimata sanctus est Lorem ipsum dolor sit amet. Lorem ipsum dolor sit amet, consetetur sadipscing elitr, sed diam nonumy eirmod tempor invidunt ut labore et dolore magna aliquyam erat, sed diam voluptua. At vero eos et accusam et justo duo dolores et ea rebum. Stet clita kasd gubergren, no sea takimata sanctus est Lorem ipsum dolor sit amet.Lorem ipsum dolor sit amet, consetetur sadipscing elitr, sed diam nonumy eirmod tempor invidunt ut labore et dolore magna aliquyam erat, sed diam voluptua. At vero eos et accusam et justo duo dolores et ea rebum. Stet clita kasd gubergren, no sea takimata sanctus est Lorem ipsum dolor sit amet. Lorem ipsum dolor sit amet, consetetur sadipscing elitr, sed diam nonumy eirmod tempor invidunt ut labore et dolore magna aliquyam erat, sed diam voluptua. At vero eos et accusam et justo duo dolores et ea rebum. Stet clita kasd gubergren, no sea takimata sanctus est Lorem ipsum dolor sit amet.Lorem ipsum dolor sit amet, consetetur sadipscing elitr, sed diam nonumy eirmod tempor invidunt ut labore et dolore magna aliquyam erat, sed diam voluptua. At vero eos et accusam et justo duo dolores et ea rebum. Stet clita kasd gubergren, no sea takimata sanctus est Lorem ipsum dolor sit amet. Lorem ipsum dolor sit amet, consetetur sadipscing elitr, sed diam nonumy eirmod tempor invidunt ut labore et dolore magna aliquyam erat, sed diam voluptua. At vero eos et accusam et justo duo dolores et ea rebum. Stet clita kasd gubergren, no sea takimata sanctus est Lorem ipsum dolor sit amet.Lorem ipsum dolor sit amet, consetetur sadipscing elitr, sed diam nonumy eirmod tempor invidunt ut labore et dolore magna aliquyam erat, sed diam voluptua. At vero eos et accusam et justo duo dolores et ea rebum. Stet clita kasd gubergren, no sea takimata sanctus est Lorem ipsum dolor sit amet. Lorem ipsum dolor sit amet, consetetur sadipscing elitr, sed diam nonumy eirmod tempor invidunt ut labore et dolore magna aliquyam erat, sed diam voluptua. At vero eos et accusam et justo duo dolores et ea rebum. Stet clita kasd gubergren, no sea takimata sanctus est Lorem ipsum dolor sit amet.Lorem ipsum dolor sit amet, consetetur sadipscing elitr, sed diam nonumy eirmod tempor invidunt ut labore et dolore magna aliquyam erat, sed diam voluptua. At vero eos et accusam et justo duo dolores et ea rebum. Stet clita kasd gubergren, no sea takimata sanctus est Lorem ipsum dolor sit amet. Lorem ipsum dolor sit amet, consetetur sadipscing elitr, sed diam nonumy eirmod tempor invidunt ut labore et dolore magna aliquyam erat, sed diam voluptua. At vero eos et accusam et justo duo dolores et ea rebum. Stet clita kasd gubergren, no sea takimata sanctus est Lorem ipsum dolor sit amet.Lorem ipsum dolor sit amet, consetetur sadipscing elitr, sed diam nonumy eirmod tempor invidunt ut labore et dolore magna aliquyam erat, sed diam voluptua. At vero eos et accusam et justo duo dolores et ea rebum. Stet clita kasd gubergren, no sea takimata sanctus est Lorem ipsum dolor sit amet. Lorem ipsum dolor sit amet, consetetur sadipscing elitr, sed diam nonumy eirmod tempor invidunt ut labore et dolore magna aliquyam erat, sed diam voluptua. At vero eos et accusam et justo duo dolores et ea rebum. Stet clita kasd gubergren, no sea takimata sanctus est Lorem ipsum dolor sit amet.Lorem ipsum dolor sit amet, consetetur sadipscing elitr, sed diam nonumy eirmod tempor invidunt ut labore et dolore magna aliquyam erat, sed diam voluptua. At vero eos et accusam et justo duo dolores et ea rebum. Stet clita kasd gubergren, no sea takimata sanctus est Lorem ipsum dolor sit amet. Lorem ipsum dolor sit amet, consetetur sadipscing elitr, sed diam nonumy eirmod tempor invidunt ut labore et dolore magna aliquyam erat, sed diam voluptua. At vero eos et accusam et justo duo dolores et ea rebum. Stet clita kasd gubergren, no sea takimata sanctus est Lorem ipsum dolor sit amet.");
notesContentsArea.setEditable(false);
notesContentsArea.setLineWrap(true);
notesContentsArea.setWrapStyleWord(true);
JScrollPane scrollPane = new JScrollPane(notesContentsArea);
scrollPane.setAlignmentX(JScrollPane.LEFT_ALIGNMENT);
// -- Setup the edited by label.
JLabel editorLabel = new JLabel(" -- Last edited by "+" at ");
editorLabel.setAlignmentX(Component.LEFT_ALIGNMENT);
// -- Add everything to the view.
panel.add(creatorLabel);
panel.add(scrollPane);
panel.add(editorLabel);
this.add(panel);
}
//</editor-fold>
}
你想实现什么不同的目标 如果您不想调整NotesPanel的大小，为什么不将其设置为固定大小？我确实希望调整大小。这就是问题所在，它没有调整大小，而是将其设置为最宽的子组件。我尝试了1,1网格布局、边界布局并将面板添加到中心，我尝试了Boxlayout，我尝试了将布局保留为默认边界布局。我们公司使用的是netbeans，而不是eclipse，因此我认为这是不可行的。我现在知道它是什么了，我使用的是BoxLayout，但是BoxLayout需要明确的大小。如果您不想调整NotesPanel的大小，为什么不将其设置为固定大小？我确实希望调整大小。这就是问题所在，它没有调整大小，而是将其设置为最宽的子组件。我尝试了1,1网格布局、边界布局并将面板添加到中心，我尝试了Boxlayout，我尝试了将布局保留为默认边界布局。我们公司使用的是netbeans，而不是eclipse，因此我认为这是不可行的。我现在知道它是什么了，我使用的是BoxLayout，但是BoxLayout需要明确的大小。当我添加第二个notesPanel时，我似乎遇到了问题，如果我不使用BoxLayout，便笺是水平添加的，我真的不希望这样。如果我使用boxlayout，那么我会得到固定的组件宽度。当我添加第二个notesPanel时，这似乎是我的问题所在，如果我不使用boxlayout，则会水平添加备注，这是我真正不想要的。如果我使用boxlayout，那么我会得到固定的组件宽度。