Name: mc57594			Date: 12/05/99


java version "1.3beta"
Java(TM) 2 Runtime Environment, Standard Edition (build 1.3beta-O)
Java(TM) HotSpot Client VM (build 1.3beta-O, mixed mode)


/* Separately, opaque and Color.alpha work ok.
 * But a transparent (setOpaque(false)) component cannot be
 * placed on a panel with a background whose color's alpha!=255
 * If you do it, one of the following 2 problems appear
 * a) in this example,
 *  caret is not properly repainted when you move it
 * In the example I even place a second white opaque panel behind
 * the yellow panel
 * b) in other cases,
 *  the color of the panel is not showed
 */
public class SwingApp extends JFrame{
  public SwingApp(String name){
    super(name);
    ///A white opaque background
    JPanel bottomPane = new JPanel();
    bottomPane.setBackground(Color.white);
    bottomPane.setOpaque(true);
    getContentPane().add(bottomPane);

    JPanel pane = new JPanel();
    bottomPane.add(pane);
    
    JTextPane t=new JTextPane();
    t.setOpaque(false);
    //t.setBackground(Color.white);
    pane.setBackground(new Color(255,255,0,128));
    pane.setOpaque(true);
    pane.add(t);
    
    
    
    pack();
    setVisible(true);
  }

  
  public static void main(String args[]) {
    SwingApp t= new SwingApp("hola");
  }
}
(Review ID: 98178) 
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