Re: Combobox how to disable edit but allow select

From:

"John_Woo" <john_woo@canada.com>

Newsgroups:

comp.lang.java.programmer

Date:

28 Sep 2006 10:38:58 -0700

Message-ID:

<1159465138.532637.29000@i3g2000cwc.googlegroups.com>

dnasmars@gmail.com wrote:

John_Woo a =E9crit :

Michael Rauscher wrote:

John_Woo schrieb:

Hi,

after setEditable(false) in a JComboBox, it can't allow to select a
item (display blank).

I'm wondering, how to disable the edit but with select function ena=

ble?

import javax.swing.*;

public class Test {

     public static final void main( String args[] ) throws Exception {
         JComboBox comboBox = new JComboBox(
                 new String[]{"1.", "2.", "3."} );
         comboBox.setEditable( false );
         JFrame frame = new JFrame("Test");
         frame.setDefaultCloseOperation( JFrame.DISPOSE_ON_CLOSE );
         frame.setContentPane( comboBox );
         frame.pack();
         frame.setVisible( true );
     }
}

Works for me.

Bye
Michael

Thanks lots, but my case

class MyComboBox extends JComboBox implements ActionListener
{
    MyComboBox()
    {
        addItem("a");
        addItem("b");
        addItem("c");
        setEditable( false );
        addActionListener( this); //line A

    }
}

without line A it works as yours, but with line A, it just couldn't
work (whenever select, it left it blank).

Can you fix it?

--
John

try this

public class MyComboBox extends JComboBox implements ActionListener {
    public MyComboBox() {
                addItem("a");
                addItem("b");
                addItem("c");
                setEditable( false );
                addActionListener( this); //line A
    }

    public void actionPerformed(ActionEvent e) {
        System.out.println(" this is ugly ");
        this.setForeground(Color.white);
    }
}

I hope this helps

That's it. Thank you.

setForeground(Color.black); is better.

just didn't know why Michael's example (using inner class) works fine,
but my case (using independent class ) has the foreground issue.

John