Re: Setting an icon on a

From:
"hiwa" <hiwa@THRWHITE.remove-dii-this>
Newsgroups:
comp.lang.java.gui
Date:
Wed, 27 Apr 2011 15:27:50 GMT
Message-ID:
<1167109185.953813.84350@f1g2000cwa.googlegroups.com>
  To: comp.lang.java.gui
dushkin wrote:

Hello there,

Please review the following code segment....

/*************************************************************/
public class IMIEasternButtonPanel extends JPanel {

    private BoxLayout bl = new BoxLayout(this, BoxLayout.LINE_AXIS);
    private JButton m_btnUp, m_btnDown;

    public IMIEasternButtonPanel(){
        setLayout(bl);
        setPreferredSize(new Dimension(500,50));
        addChilds();
    }

    public void addChilds(){

        boolean b = FilesUtils.isFileExists("up.gif"); //b = true !!!
        Icon upIcon = null;
        upIcon = new ImageIcon("up.gif");
        m_btnUp = new JButton();
        m_btnUp.setIcon(upIcon);
        m_btnUp.setSize(50, 50);
        add(m_btnUp);
/*******************************************************/

Why can't I see the icon on the up button??? Moreover, the button does
not seems to get the correct size as I had set. It is more like a
oblong than a 50X50 square...

Many thanks!

You could use a simple JPanel instead of extendint it.
What's the point in extendint it?

Try this:
-------------------------------------------------------------------------------------
import javax.swing.*;
import java.awt.*;

public class IMIEasternButtonPanel extends JPanel {
  private JButton m_btnUp, m_btnDown;

  public IMIEasternButtonPanel(){
    setLayout(new BoxLayout(this, BoxLayout.Y_AXIS));
    setPreferredSize(new Dimension(500,50));
    addChilds();
  }

  public void addChilds(){
    m_btnUp = new JButton(new ImageIcon("up.gif"));
    m_btnUp.setMinimumSize(new Dimension(50, 50));
    m_btnUp.setMaximumSize(new Dimension(50, 50));
    m_btnUp.setPreferredSize(new Dimension(50, 50));
    add(m_btnUp);
  }

  public static void main(String[] args){
    JFrame frame = new JFrame();
    frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
    IMIEasternButtonPanel iebp = new IMIEasternButtonPanel();
    frame.getContentPane().add(iebp, BorderLayout.EAST);

    frame.setSize(500, 500);
    frame.setVisible(true);
  }
}

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