Question: Why do JComboBox or JTextField ( and I pressume others ) do not work if I put them in a JWindow. They work only in a JFrame.
In jdk1.5.0 JComboBox was working properly in a JWindow as well. In the 1.6.0 it does not!
Do you know what might be the problem and what do I have to do to make it work?
Thank you!
package project;
import javax.swing.*;
public class Test
{
public static void main( String args[] )
{
String[] string = { "1", "2", "3" };
JComboBox box = new JComboBox( string );
JWindow window = new JWindow();
window.setLayout( new java.awt.BorderLayout() );
window.add( box, java.awt.BorderLayout.NORTH );
window.pack();
window.setVisible( true );
}
}
This is the sample code. What I am getting is a small window containing the JComboBox however when I click the drop down button it does not display the drop down list. This works in a jframe.
If I also add a "box.showPopup()" to the code it shows the dropdown list properly but it is fixed ( this is what the method does ).
What is actually happening? Do I have to implement the combobox's behavior myself or something?
Did you read the JWindow API?
/*
** From the API for "JWindow(frame)" constructor:
**
** Creates a window with the specified owner frame.
** If owner is null, the shared owner will be used and this window will not be focusable.
** Also, this window will not be focusable unless its owner is showing on the screen.
*/
import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
public class WindowTest
{
public static void main(String[] args)
{
JFrame frame = new JFrame();
frame.pack();
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
//frame.setLocation(-200, 0); // uncomment this line to hide the dummy frame
frame.setVisible( true );
JWindow window = new JWindow(frame); // this works
//JWindow window = new JWindow(); // this doesn't work
window.getContentPane().add( new JTextField(10), BorderLayout.NORTH );
window.getContentPane().add( new JButton("Button") );
window.getContentPane().add( new JCheckBox("CheckBox"), BorderLayout.SOUTH );
window.setBounds(50, 50, 200, 200);
window.setVisible(true);
}
}