🚀 go-pugleaf

 Hi.  On my homepage http://www.semu.demon.co.uk/index.html you will see
 a couple of applets with links to the source files,a circular clockface 
 (old) and an animated ascii trotting-dog (new, needs swing to view).
 They flicker something rotten; yet I have seen what are apparently
 java applets on other pages that flow smoothly.

 Can anyone explain simply how to cure this?  Apparently I would need 
 to have one bitmap showing on the screen, and another bitmap which
 I can have fully rendered then make visible i.e. blatt into the
 screen image, But I don't know how to do this.

 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

 Also, I want to have a component (Canvas?  TransparentImage?) on which
 I can draw a GIF file then draw lines, ellipses, text etcetera upon 
 the image; also possibly give it a listener to pick up mouse clicks 
 and print some info about the region clicked over.  Sounds
 straightforward enough, but.........  How do I do this?

 I now how to put a GIF on a Button, because there is an 
 actual subclass ImageIcon extending the abstract class Image,
 and I can use one of those.  What subclass of image do I use
 to put on a Canvas?  what implementation of ImageObserver??
 (and is there any more info on this?).



import java.awt.*;
import java.awt.image.*;
import java.awt.event.*;
public class MyCanv2 extends Canvas {
  //ImageObserver obs = new ImageObserver();
  //Image img = new Image("c:\\ukco\\demon\\xemu\\icons\\globe4.gif");

    /*
    / ..................construct
    */
    public MyCanv2() {    ;    }

    /*
    / .......................draw
    */
    public void draw(Graphics g){
      //g.drawImage(img,2,2,obs);
        g.drawLine ( 2, 2,80,80);
    }
}

// Won't compile if those lines are de-commented.



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