How to get JComboBox's MetalComboBoxButton object?

Hi,

I am using an non-editable JComboBox which has a MetalComboBoxButton component combined with it. I need to get the object of the MetalComboBoxButton from the JComboBox object. I tried everything I could think of but I still couldn't find it. There is no "get..." type of method to use to get it...

Could anyone please help me on this one?

Thank you very much.

Lifeng

Yes Lifeng , As you said , there is no "get..." method to get Arrow button ..
You have to try something like this :


import javax.swing.*;
import javax.swing.plaf.basic.*;

public class ComboTest extends JFrame{
ComboEx combo = new ComboEx();
public ComboTest(){
this.getContentPane().add( combo );
}
public static void main( String[] str ){
ComboTest test = new ComboTest();
test.setVisible( true );
System.out.println( test.combo.getArrowButton());
}


// You have to do something like this ...

public static class ComboEx extends JComboBox{
ComboUI ui;
public void updateUI(){
super.updateUI();
ui = new ComboUI();
setUI( ui );
}

class ComboUI extends BasicComboBoxUI{
public JButton getArrowButton(){
// "arrowButton" is a protected variable in BasicComboBoxUI
return arrowButton;
}
}

public JButton getArrowButton(){
return ui.getArrowButton();
}
}
}