不能更改gridbaglayout中的大小元素

Question

我想要設置jbutton和jdate chooser = 2單元的寬度gridbaglayout。我嘗試在我的代碼中使用weightx,weighty,gridwidth,gridweight來設置大小jbutton和jdatechooser但不能。

這是jdatechooser庫。

這我的代碼：

import java.awt.Dimension; 
import java.awt.GridBagConstraints; 
import java.awt.GridBagLayout; 
import java.awt.Insets; 
import java.awt.Toolkit; 

import javax.swing.JButton; 
import javax.swing.JComboBox; 
import javax.swing.JFrame; 
import javax.swing.JLabel; 
import javax.swing.JPanel; 
import javax.swing.JTable; 

import com.toedter.calendar.JDateChooser; 

public class SearchRoomFrm extends JFrame { 

final private String[] listTypeRoom = { "thường", "hạng trung", "VIP" }; 

private JDateChooser txtStartDate; 
private JDateChooser txtEndDate; 
private JComboBox cbTypeRoom; 
private JButton btnSearchRoom; 
private JTable tbRoom; 
private JButton btnXong; 

public SearchRoomFrm() { 
    super("Search Room"); 
    txtStartDate = new JDateChooser(); 
    txtEndDate = new JDateChooser(); 
    cbTypeRoom = new JComboBox(listTypeRoom); 
    btnSearchRoom = new JButton("Search"); 
    tbRoom = new JTable(); 
    btnXong = new JButton("Xong"); 

    JPanel content = new JPanel(); 
    content.setLayout(new GridBagLayout()); 

    GridBagConstraints c = new GridBagConstraints(); 
    c.fill = GridBagConstraints.BOTH; 
    c.insets = new Insets(5, 5, 5, 5); 

    // Row 1 
    c.gridx = 0; 
    c.gridy = 0; 
    content.add(new JLabel("Start date: "), c); 

    c.gridx = 1; 
    content.add(txtStartDate, c); 

    c.gridx = 2; 
    content.add(btnSearchRoom, c); 

    // Row 2 
    c.gridx = 0; 
    c.gridy = 1; 
    content.add(new JLabel("End date: "), c); 

    c.gridx = 1; 
    content.add(txtEndDate, c); 

    // Row 3 
    c.gridx = 0; 
    c.gridy = 2; 
    content.add(new JLabel("Type room: "), c); 

    c.gridx = 1; 
    content.add(cbTypeRoom, c); 

    // Row 4 
    c.gridx = 3; 
    c.gridy = 3; 
    content.add(tbRoom, c); 

    this.setContentPane(content); 
    this.pack(); 
    Dimension dimension = Toolkit.getDefaultToolkit().getScreenSize(); 
    int x = (int) ((dimension.getWidth() - this.getWidth())/2); 
    int y = (int) ((dimension.getHeight() - this.getHeight())/2); 
    this.setLocation(x, y); 

} 

public static void main(String[] args) { 
    SearchRoomFrm frm = new SearchRoomFrm(); 
    frm.setVisible(true); 
} 
} 

Answer 1

你的意思是這樣......

這是使用類似實現...

c.gridx = 2; 
c.gridheight = 2; 
content.add(btnSearchRoom, c); 
c.gridheight = 1;